CN101553992A - Wireless infrared multimedia system - Google Patents

Abstract

A portable, data storage device, player, playback device, data streaming device, audio player, video player, audio and video player, satellite radio device, cellular phone (with an integrated audio and/or video player), PDA (personal digital assistant), PMP (portable media player), gaming device, handheld and/or mobile device, each embedded with inherent audio and/or video playing/playback capabilities, attached to a docking station or cradle via a single or plural audio/video connectors, wirelessly transmitting audio and/or video and/or control data via infrared optical signals to a set of remote wireless receiving device/s, speaker/s and/or video reproduction device/s.

Description

Wireless infrared multimedia system

CROSS-REFERENCE TO RELATED PATENT

The application require the applicant on March 8th, 2006 application and title be the priority and the rights and interests of No. the 60/780th, 442, the interim U.S. Patent application of " wireless infrared multimedia system ".The application also require the applicant on December 16th, 2005 application and title be the priority and the rights and interests of No. the 60/751st, 428, the interim U.S. Patent application of " wireless multimedia system ".The disclosure of described application and whole file thereof (comprising all prior art introductions of quoting with it) integral body as setting forth fully herein is incorporated this paper into especially as the reference data.

Invention field

The present invention relates to be used for from being included in berth station or the portable audio of carriage or the system of audio/video data memory device/player switched wireless audio ﹠ video.

Description of the Prior Art

Now, along with the portable audio data storage players of various kinds, similar prevailing mpeg 3 player (being " MP3 player " hereinafter) is (for example, from Apple computer

The MP3 player), people can buy berth station or the carriage (being " DS/C " hereinafter) that is used for the MP3 player, and it comprises the loud speaker as a DS/C part inherently, and this loud speaker plays audio reproducing system.This loud speaker is embedded in the DS/C usually.Such equipment is disclosed among the international publication application WO2005/079448 (Grady).

Another analogous cases that exist on market are when loud speaker joins DS/C (holding the MP3 player) to via circuit, make loud speaker can be provided with away from DS/C, are used for better stereo and/or around the sense of hearing and quality.Such equipment is disclosed among the U.S. published application US2005/0105754 (Amid-Hozour).A similar equipment (though not shown loud speaker) is disclosed among the U.S. published application US2002/0119800 (people such as Jaggers).As the equipment situation of Amid-Hozour, the docking station of Jagger (docking station)/base (cradle) is not wireless.Replace, with respect to the present invention who data wireless is sent to its output equipment, it uses and wired data to be sent to its output equipment.

Another example be when the MP3 player attached to the transmitter apparatus (for example, it uses Bluetooth technology) of mobile battery power supply on the time, so, the use frequency medium, audio content is transmitted wirelessly to headphone.

Another example is when the MP3 player comprises inherent wireless capacity, allows directly to be wirelessly connected to earphone.

Another example is when the MP3 player that is held by docking station/base wirelessly is sent to home audio system with audio content, and this home audio system is undertaken broadcast and amplified this audio frequency through passive wired set of speakers.

In addition, the application WO 01/29979 of application US2003/0054784 that the U.S. announces people such as () Conklin and international publication people such as () Shaanan discloses the use at the mobile phone communications middle infrared (Mid-IR), so that avoid that infer and the health hazard problem radio frequency that approaches user's head (RF) signal correction, and be convenient to " hands-free " mobile phone communications.But when they mainly were intended to be used for supply cellular full-duplex audio to communicate by letter, these equipment used the two-way full duplex infrared communication that utilizes two different infrared wavelengths.The present invention uses an infrared wavelength, and does not use full-duplex communication, but unidirectional, point-to-multipoint communication.In addition, Conklin equipment does not use the infrared ray that disseminates, as in the present invention, and in fact, in Conklin, needn't use the infrared ray that disseminates, because the application of Conklin is as the various targets that hinder as much as possible of enclosure wall, similar furniture, people of passing by or the like, and, do not have the problem that hinders infrared signal as the certain location of loud speaker in room or enclosure wall.

In addition, the application US2005/0015260 that the U.S. announces people such as () Hung discloses a kind of application apparatus that is used to play mp3 file, makes that being stored in MP3 data in USB (USB) equipment or the storage card need not computer and can directly play on loud speaker.But, in the embodiment of this Hung, do not have wireless transmission.Second embodiment of Hung provides the application apparatus of a kind of MP3 of being used for, and it utilizes standard frequency modulation (FM) the stereo audio system in automobile to remove to play the MP3 voice data that is included in USB device or the storage card.Certainly, this embodiment does not use infrared transmission means, and does not use diffused infrared certainly as in the present invention.

In addition, U.S. published application US2004/0224638 (people such as Fadell) discloses a kind of media player, and it can wirelessly be sent to various output equipments.Also disclose the station of berthing, still, this station of berthing does not have wireless transmission capability, and replace with, will be included in wherein data from media player via wired output equipment that sends to.The use of the infrared transmission of openly not disseminating in addition.

In addition, U.S.'s published application US2005/0018857 (people such as McCarty) discloses a kind of system that is used for via network exchange of audio signals between input equipment and output equipment.This exchange can be wireless, still, and the infrared ray that does not have public use to disseminate.Replace with, by on the different surface of infrared receiving set shell, some infrared detectors being set, the equipment of McCarty attempts to solve infrared line-of-sight problem, makes infrared receiving set can receive the signal that transmits from infrared transmitter from more than a direction.

At last, the application US2004/0223622 that the U.S. announces people such as () Lindemann discloses a kind of digital radio broadcast system, it comprises the wireless speaker that is used to select and transmit the voiceband facility of digital audio-frequency data and is used to receive data and broadcast sounds.But, non-infrared RF transmitting device is disclosed, and certain diffused infrared not as in the present invention.The also not open or expectation wireless video transmission of the system of Lindemann.

In above first example that provides, wherein loud speaker is the part of DS/C, and typically be embedded in wherein, this result is whole relatively very big equipment/auxiliary equipment, because insufficient space, it can be not easy to adopt on office or bedroom desk, support, frame or the like.In some families and working environment, this space constraints is very important.

In addition, when loud speaker is embedded among the DS/C, there is restriction to the size of above-mentioned loud speaker, thus and the restriction of its corresponding quality and power output (between size and power/quality, having correlation).The user wants to listen to the audio frequency of MP3 player potentially on bigger, more powerful loud speaker, strengthen the property and whole sound sensation.If loud speaker will wirelessly be connected to DS/C (under our situation via wireless technology, diffused infrared), so anyly can make that the user has the power of better adaptability, selection and benefit, independently Machine Design and structure can be used for loud speaker.

Summary of the invention

Therefore, as can be seen, desirable is that it has relatively little auxiliary equipment (DS/C), and it (for example holds the portable audio data memory device, the MP3 player), and have one group as audio reproducing system from the fully dismountable wireless speaker of DS/C.Benefit is: a) save the space, b) DS/C is very little, and more convenient manipulation, and c) user can benefit from from the stereo and/or surround sound of loud speaker sensation, this loud speaker is oppositely arranged with him, and according to he/her size and the power of selection.That is to say, in the casing of this system works, need not to adopt voice band line/cable.The deployment of circuit is normally complicated, disturbance and experience inconvenience, and not beautiful, perhaps the deployment operation of otherwise expensive.Therefore, adopt utilization not have the wireless speaker of wireless DS/C work of telecommunication cable/circuit to have many advantages.This wireless speaker that is called active or energising only need connect via the supply of electric power of reference power supply socket.Supply socket has in various home/office environment a lot.

Therefore, the audio reproducing that adopts one group of wireless active loud speaker is the main intention of invention disclosed, and the loud speaker of this group wireless active wirelessly is connected to the DS/C that holds portable audio data storage players via infrared signal.

With respect to video content, the user can will to bigger screen Digital Television (DTV) (for example reproduce (via the wireless optical channel of describing herein) as the video content of storage on portable audio/video data Memory player (as above briefly definition), LCD, plasma or the like) on, the perhaps browser of another type, projecting apparatus, screen, the perhaps movable or static video reproducing apparatus of any other type.Various equipment will be as much as possible with compressed format (perhaps with compressed format, for example, with MPEG4 form or form video only H.264) receive (through the infrared radio optical channel) video content and relevant audio content, and go compression in case of necessity, and be converted into the analog video content (for example, NTSC, PAL, HDTV) that can drive video reproducing apparatus.This user thereby can select and the operator uses remote control (RC) equipment of equipment routine, his personal audio/video content of appreciation on large-screen equipment by means of various watching.Equally, main benefit is that this link is wireless,, does not need to adopt worry, not beautiful audio/video circuit/cable, so that give audio/video (A/V) reproducer with the Voice ﹠ Video content playback that is.Aforesaid audio frequency and/or video system normally are called " multimedia system of Radio infrared " (WIMS).

This user can enjoy the convenience of deployment at the station of berthing for a short time that holds portable audio or A/V data storage player in room/enclosure wall now.Loud speaker at wireless active, and/or wireless audio/video equipment, similar DTV also other enclosure wall (for example, bedroom, bedroom, kitchen, cubicle, office or the like) under the situation about adopting in advance, this user can adopt this very little DS/C again from room/office to room/office, to appreciate individual A/V content.

Another aspect of the present invention is, this portable A/V data storage player is contained in the DS/C, wirelessly send the ANTENN AUDIO and/or the video equipment that play customer multi-media central role to, personal audio/the video content that keeps him, replace as much as possible or additional traditional-family multimedia hub, such as, household audio and video system, stereophonic sound system, video/dvd system or the like.

Another advantage of this system is, the Any user that has portable personal A/V data storage player can engage the WIMS that adopts in advance until any with it, and share his personal audio and/or video content (for example, visit has the friend's of such WIMS people).

With regard to the Radio infrared transmitting device, especially, use infrared ray to disseminate in the present invention.Radio infrared transmission has to transmit to compare with radio frequency (RF) and has obvious advantage, wherein:

A) it adopts light carrier to transmit signal, and does not disturb radio frequency operation equipment (cell phone, cordless telephone, wlan network or the like).

B) it adopts optical signal receiver (for example, transducer, the perhaps sensor array of usually being made by silicon), and therefore is not easy to be subjected to radio frequency interference (from the RF equipment more than it, and microwave oven, bluetooth equipment or the like).

C) infrared ray means the insensitive of radio frequency interference, and it is particularly useful for the data stream type of audio frequency, speech and video communication system, because need the still less data re-transmitting of (with not having as much as possible) significantly.Therefore, the stand-by period keeps low in the extreme, and therefore, in the Voice ﹠ Video content (promptly, the situation that this audio content is not aimed at video content, and for example a people talks, but sound is delayed) between " shape of the mouth as one speaks is synchronous " be maintained at Min..Therefore, it is higher utilizing the infrared system user satisfaction.In addition, in order to illustrate very big interference and stand-by period problem by means of RF, must adopt memory buffers or other technology.This can make the RF system expensive, and it is the main shortcoming in using such as those user's electronic technology of describing herein.

D) infrared emission can not crossed the boundary of their work, perhaps just very moderately (light signal is not invaded wall or other lighttight object), therefore, such technology has intrinsic cutting apart, promptly, being operated in an infrared link (for example, being embedded in the multimedia system) in the boundary can not disturb another to be operated in such system of adjacent boundary (boundary is room, office, small office, aircraft passenger compartment, vehicle or the like).Therefore can work in the mode that exists jointly entirely at the different a plurality of optical links that adopt near boundary, and (that is, BW re-use notion) utilizes identical bandwidth (BW) in each boundary.Because aforesaid reason, the light infrared technique has intrinsic fail safe, because nobody can open an antenna in adjacent boundary, and eavesdrops ongoing smooth infrared communication.This is an important notion in the field of the individual privacy of the communication that is used for any kind.

E) in addition, light emission at infrared wavelength (and especially, near infrared wavelength, it is suggested and is used to realize that WIMS uses) is the technology of worldwide non-adjusting, it need be from any Frequency Distribution of country or government, and any permission or special sign.When using, this technology can be called as " 1 class LED product " as reflector (it also is suggested for realizing that WIMS uses) with infrared light emitting diode (LED).

F) in addition, infrared technique is cheaply aspect large-scale production usually, and therefore is fit to above-described user's electronic application.

G) in addition, infrared emission can not passed tissue (because the very short wavelength of infrared ray as RF, approach visible light in the extreme), therefore, the mode that this technology is concluded the business on market for the individual uses than RF " more green " and safer, for example, RF launches (other electricity of honeycomb emission and various wavelength causes the magnetic emission) in the continuous observation research that is in long-term effect.

H) in addition, infrared link of disseminating of the present invention, wherein this link is an omnirange fully, that is, fully non-directional with ignore having of distance and compare very big advantage with sensing and half sensing (wide-angle) infrared link of being used for the routine that disclosed herein specific wireless multimedia system uses.Infrared link performance of disseminating of the present invention is similar in boundary the emission based on radio frequency, and send and receiving entity between do not need sighting distance and specific directivity position.Therefore, infrared link of disseminating of the present invention for such as, disposing in the environment in the room of bedroom, centre, cubicle, dormitory, audio/video room or the like is very easily, because this link is isotropic directivity (disseminating), and people are can be in this environment movable in a usual manner and need not to interrupt ongoing wireless optical link transmission.In addition, this infrared transmitter that disseminates can not be arranged in the direct sighting distance of the infrared receiving set that disseminates, and this allows aspect loud speaker placement, the placement of A/V information source and furniture arrangement or the like more flexible.

Therefore, a preferred embodiment of the present invention is to use based on ultrared link, and removes to realize WIMS based on the link of diffused infrared especially.

Brief Description Of Drawings

Fig. 1 illustrate wherein from

The audio content of MP3 player is sent to the embodiment of remote speaker via wireless diffused infrared;

Fig. 2 illustrates wherein the embodiment that is sent to remote speaker from the audio content of the MP3 player of routine via wireless diffused infrared;

Fig. 3 illustrates the embodiment that wherein is sent to remote speaker from the cellular audio content of the MP3 player with an embedding via wireless diffused infrared;

Fig. 4 illustrates wherein the embodiment that is sent to remote speaker from the audio content of the satellite radio devices of the audio codec with an embedding (for example, mpeg 3 or similarly) via wireless diffused infrared;

Fig. 5 illustrate wherein from

The Voice ﹠ Video content of audio/video player is sent to the embodiment of Digital Television and independent wireless speaker via wireless diffused infrared;

Fig. 6 illustrate wherein from

The Voice ﹠ Video content of audio/video player is sent to the embodiment of the Digital Television of the wireless speaker with embedding via wireless diffused infrared;

Fig. 7 illustrates the Radio infrared that the is used for audio frequency station of berthing, and that is to say, the internal structure of berth station or carriage shown in Figure 1;

Fig. 8 illustrates (that is, power supply) loud speaker of the wireless active that uses infrared transmission, that is to say, in the internal structure of the loud speaker shown in Fig. 1-5;

Fig. 9 illustrates the Radio infrared that the is used for Voice ﹠ Video station of berthing, and that is to say, in the internal structure of berthing station or the carriage shown in Fig. 5-6;-

Figure 10 illustrates the Radio infrared Digital Television, that is to say, in the internal structure of the TV shown in Fig. 5-6;

Figure 11 illustrates the Radio infrared Digital Television along with this spendable another type of system,, has the internal structure of Digital Television of the loud speaker of embedding shown in Figure 6 that is.

Detailed description of the invention

Fig. 1 has described the only audio system embodiment of the multimedia system (being " WIMS " hereinafter) of this Radio infrared.System 100 is by in the station/carriage that berths that is contained in Radio infrared (hereinafter for " DS/C ") 120 Player 110 (from the Apple computer of the U.S.) is formed.DS/C 120 normally has a shell, and its electronic equipment, connector, cable or the like hold in the enclosure.DS/C 120 via digital connector 121 or the simulation (for example, the linear level audio frequency) connector 122 (by at user option) reappears the audio content that is stored in the player 110, and the ANTENN AUDIO content is sent to the loud speaker 140 of single or a plurality of wireless actives through infrared transmission 130.

This wireless transmission be via or by transparent material (for example, acrylic fiber or Merlon), perhaps by " window " 137 that constitute with the material of infrared filtering pigment/dyestuff transmit with being used for identical being coated with of receiver of remote-control sytem (for example, long pass light infrared filter).This window is the part of the mechanical structure of DS/C 120 shells, and needs to allow optical carrier transmission signal to go to send from DS/C 120 inside.Arrive at the loud speaker 140 of wireless active from the wireless transmission of DS/C 120 as infrared signal 141 (typically, being attenuated and distortion), and enter loud speaker via similar window 156.The material that is used for window 156 is coated with pigment/dyestuff as explained above, so that only allow infrared transmission to pass through, and decay is present in the visible light in the ambient light environment.The loud speaker 140 of wireless active uses infrared signal 141, is used to be received in the voice data that carries on the wireless optical channel, gives extraneous to produce audio frequency output sound/music signal.Each loud speaker 140 is active or (that is, comprising an internal electric source) energising, and only need be connected to supply of electric power socket (that is mains supply) via cable 155.

Fig. 2 describes the preferred embodiment of the only audio system very similarly be labeled as 200 WIMS.In this system, replace with conventional MP3 player 210

Player 110.Except numeral and simulation connector 221 and 222 can change respectively to provide required and correct connection MP3 player 210, all remainders maintenances of this system unit are identical.The MP3 player is by such as Sandisk (U.S), Microsoft (U.S), Creative

(Singapore),

(Japan) and many other companies make.

Fig. 3 describes another preferred embodiment that very similarly is labeled as the only audio system of 300 WIMS.In this system, with the cell phone replacement of MP3 player 310 with embedding

Player 110.Except numeral and simulation connector 321 and 322 can change respectively a little with correct connection that required and the cellular 310 audio frequency output of MP3 are provided, all remainders maintenances of this system unit are identical.Cell phone with inherent MP3 player capabilities is by the promise base

(Finland), rope

-Ai Li (Japan/Sweden), motor sieve

(U.S.) or the like makes.

Fig. 4 describes another preferred embodiment that very similarly is labeled as the only audio system of 400 WIMS.In this system, replace with satellite radio devices 410

Player 110.Except numeral and simulation connector 421 and 422 can change respectively a little with correct connection that is provided for required and the output of satellite radio devices 410 audio frequency, all remainders maintenances of this system unit are identical.Satellite radio devices is by such as XM ^TMWith Two u s companys make.

Fig. 5 describes Voice ﹠ Video (A/V) system embodiment of this WIMS.System 500 is by in the station/carriage that berths (DS/C) 520 that is contained in Radio infrared

Video player 510 (from the Apple computer of the U.S.) is formed.DS/C 520 normally has a shell, and its electronic equipment, connector, cable or the like hold in the enclosure.DS/C 520 regains the Voice ﹠ Video content via digital connector 521 from player 510, and with the wireless system of wireless family cinema that sends to of A/V content, this family movie department system is made up of the loud speaker 540 (also can use the loud speaker of one group of wireless active) of wireless digital TV-set (being " DTV " hereinafter) 550 and at least one wireless active through infrared transmission 530.Except it only extracts the audio content from wireless A/V data flow in portion's processing unit within it, the loud speaker 540 of wireless active has with the loud speaker 140 of wireless active shown in Figure 1 similarly constructs and structure.

Infrared transmission 530 (carrying wireless A/V content) is transmitted by the window 537 via function with the window 137 that is similar to DS/C 120 and material.Wireless transmission from DS/C 520 arrives at wireless DTV 550 as infrared signal 551 (being attenuated possibly and distortion), and enters DTV via window 565.Wireless transmission also arrives the loud speaker 540 of wireless active potentially via its infrared window.As explained above, among both, this window material is coated with pigment/dyestuff, so that allow to pass through infrared transmission at the loud speaker 540 of wireless DTV 550 and wireless active, and decay is present in all visible lights in the ambient light environment (for example, long by the light infrared filter) consumingly.

Wireless DTV 550 uses infrared signal 551 to be used for the receiving digital video data, produces the moving frame that is used to be presented on its screen.Wireless DTV 550 is connected to main power source via electric wire 566.The loud speaker 540 of wireless active uses infrared signal 530, is used to receive the digital audio-frequency data that carries through infrared transmission, and produces audio output signal to air medium.The loud speaker 540 of wireless active comprises internal electric source, and only need be connected to supply socket via the cable for its operation.

Fig. 6 illustrates system 600, and it is another similar embodiment of above-described ANTENN AUDIO and video wireless infrared multimedia system.In system 600, this speaker entities is loaded into (embedding) in wireless DTV 570.This can be implemented on the both sides of wireless DTV570 with many methods.In this case, this infrared signal 571 receives at infrared window 565, and then, the loud speaker of packing into 581 and 582 and screen 583 of wireless DTV 570 given the Voice ﹠ Video signal decomposition respectively by DTV electronic equipment shown in Figure 11.

Fig. 7-11 describes the internal electron structure of the audio frequency and the A/V embodiment of DS/ Cs 120 and 520 respectively in detail, the loud speaker 140 and 540 of wireless active respectively, wireless DTV 550, and the wireless DTV with the loud speaker 570 of packing into.Each figure is described in detail as follows.

Should be understood that above-described portable audio and video data Memory player can also replace with various other the portable audio of similar personal digital assistant, game station or portable electronic device (PMP) and/or video data Memory player equipment.It is also to be understood that mpeg 3 only is a kind of form that can be included in the audio frequency CODEC in the portable audio data storage players.Except mpeg 3, CODEC can be the audio frequency of AAC or the compression of WMA form, perhaps other appropriate format.

It is also to be understood that, can form by the various machineries and industrial design (ID) structure (for example, mechanical structure and connector) of the equipment that can hold above-described various size and form as the DS/C that is used for audio frequency only or is used for the WIMS part that A/V uses.These connectors can also have various machineries and the electrical attributes as the required of DS/C specific deployments and expectation.

Fig. 7 describes the internal structure of the infrared station of berthing of only audio wireless of the present invention/carriage embodiment 120.Station/the carriage (DS/C) 120 that berths is connected to

The MP3 player, have cell phone, satellite radio devices, PDA, PMP or the game station (hereinafter being commonly referred to as " player ") that embed the MP3 player.DS/C 120 comprises 2 types audio connector: a) the analogue audio frequency input connector 122, and it imports the analog linearity level audio that everybody is familiar with from player, and b) the digital audio input connector 121, and it is from player (common PCM-I ²S) input digit type audio frequency.This digital audio-frequency data optionally be compressed voice data (for example, MP3).This simulation or digital audio-frequency data can optionally comprise embedding capacity or other audio attribute.The type of this audio frequency input (that is, if exist, simulation or numeral) can select via the manual control 133 of user or by remote control 132 (seeing below) by DS/C user.

After selecting, audio signal 123 is transfused to the audio frequency pretreatment unit 124 to DS/C 120.Audio signal 123 optionally can be made up of several voice-grade channels (for example, 1 pair, 2 pairs or more to L and R channel).Audio frequency pretreatment unit 124 can optionally simulate digital quantizer (ADC) circuit formation as an example by being used to handle the audio grade of importing from the analog type audio frequency of player.This ADC is to the simulated audio signal of coming in sampling, and the signal (PCM) 125 that typically is converted into the digital pulse coding modulation is (for example, with I ²The S form).This ADC can have the function/performance of various kinds, for example, and its total harmonic distortion or SNR.Typical audio grade ADC equipment comes from Texas's instrument public affairs of the U.S.

(PCM1800) and Cirrus

(for example, CS5351).

Audio frequency pretreatment unit 124 can also receive the numeric type audio frequency with compression or unpacked format.Then, it can handle this signal in various modes.For example, for incompressible digital audio-frequency data, audio frequency pretreatment unit 124 can be converted into the PCM signal format of various kinds, perhaps carries out resampling by SRC (sampling rate converter) circuit (for example, the audio frequency of sampling from 44.1KHz to 96KHz).Perhaps optionally, audio frequency pretreatment unit 124 can compress this digital audio-frequency data to reduce the wireless signal-path band width restriction, and Ya Suo digital audio-frequency data sends the loud speaker of wireless active to the most at last, will decompress at the loud speaker place of wireless active.The audio frequency preliminary treatment can also relate to the manipulation of the signal volume based on digital algorithm (for example, filtering), bass and the high pitch attribute that use various kinds.Audio frequency pretreatment unit 124 optionally can it use microcontroller unit 131 controls of various parameter by order in the process of simulation of arriving in processing or numeric type audio signal.

Next unit in DS/C 120 electronic structures is a signal processing unit 126.This unit is the CPU of DS/C, receives numeric type audio signal 125, and prepares the unit 127 that it is used to send to wireless front end circuit.The numeric type audio signal of optionally to no matter coming in non-compression or compressed format in unit 126 is carried out various Digital Signal Processing (being " DSP " hereinafter) operation.The DSP that carries out in unit 126 optionally can comprise: the data cascade; The data scramble; Data encryption (for example, DES); Digital audio-frequency data compression (for example, being used to reduce the lossless compressiong of the channel width of needs); Modulation, perhaps carrier-frequency modulation (for example, FSK, BPSK, QPSK or the like are optionally, on the high-velocity electrons carrier frequency), perhaps baseband modulation technology (for example, L-PPM, HHH or the like); Data framing and format (for example, be spliced into the Frame of equal sizes, and increase head, preamble and the delimiter of various kinds); Be used for the synchronous clock information of wireless signal with increase.

Digital signal processed data is supplied to unit 127 then, and it is a transmit side wireless front-end circuit.This unit is infrared transmitter (optionally, a transmitter array) driver, and uses air medium to go to send wireless data to the receiver side entity.Unit 127 adopts the optical carrier transmission signals with single light frequency.Optionally, this light frequency is near infrared (NIR) frequency band (for example, using 850-880,950,1050,1300 or possibly, 1500 nano wave lengths).The physical property of this infrared transmission and structure can be by optionally guiding and little angle transmission (for example, being similar to remote control or IrDA link); Guiding and wide-angle transmission; Perhaps non-guiding and non line of sight (NLOS) light infrared transmission, it is called as diffused infrared.Diffused infrared is also referred to as omni-directional infrared sometimes.

Unit 127 can optionally adopt the infrared transmission equipment 128 that is used to drive single or a plurality of electric light, similar LED light-emitting diode, laser diode or laser, perhaps the drive circuit of certain combination of these devices (for example, driving transistors), these devices are called communication diode (being " CD " hereinafter) usually and jointly.This drive circuit optionally operation technique goes to keep average current signal stable, and other the important parameter that removes to regulate this drive circuit and infrared transmitter.

Especially, Chang Gui communication diode driver circuits (being " CDDCs " hereinafter) is designed to its maximum average LED drive current I with about 90% _Max(this than maximum level slightly little be designated hereinafter simply as specified LED drive current I _N)) irradiation CD, so that can not shorten its useful life or cause fault.But supply power voltage can fluctuate up to ± 10%, when with the forward voltage V of CDs _fVariation and its inherent temperature dependency when reaching an agreement, it can cause actual LED drive current I usually _LED(t) or not enough or cross and raise.If I _LED(t)＜I _N, in the CD luminous intensity, there is synthetic branch, thereby reduces the valid data transmission range, perhaps under egregious cases, stop communication up hill and dale.With respect to this, if for the cycle I that prolongs _LED(t)＞I _N, conventional CDDC is with excessive LED drive current I _LED(t) drive its CDs, shorten its useful life possibly, perhaps under egregious cases, cause irrecoverable damage.In addition, some data transmission applications requires the relatively few or rare digital data pulse that arrives at brokenly, and this makes conventional CDDC remove to drive exactly CD even difficult more.

By contrast, when when being adjusted into steady operation for the digital data pulse of coming in that relatively arrives at relative fast speed for a long time, the communication diode driver circuits in unit 127 responds into has LED drive current I _LED(t) digital data pulse drives CD, I here selectively _LED(t)=I _N± 3%, and even further I preferably _N± 1%.This is to realize by continuously shift voltage SV (t) being offered the input terminal that two input terminals move amplifier, other input terminal is presented with the analog data voltage ADV (t) corresponding to the pulse of the digital data pulse of coming in, and is used to send the pulsed drive voltage DV (t) of stack.After the digital data pulse of not coming in for a long time, this shift voltage SV (t) preferably is increased to maximum SV _Max, guaranteeing even in the worst case, the digital data pulse of coming in causes transfer of data, still, send the LED drive current I of reality of the CD of branch road (being " CLEB " hereinafter) at moment irradiation Communication ray _LED(t) greater than specified LED drive current I _NCondition under, reverse cycle ground staged reduces, this Communication ray sends several LED that a route organizes with serial circuit and forms.This maximum SV _MaxInevitably less than the threshold drive voltage of the one or more CD that are used for continuously shining CLEB.

In unit 127, this CDDC also need not about its arrival rate or its any any agreement that arrives at the adherence of pattern, handle each single digital data pulse of coming in independently, thereby guarantee that this CDDC is among the most admissible standby condition that is used to receive the digital data pulse that the next one comes in.In addition, the 127CDDC of unit promptly assembles during its steady operation in transition state, and at supply power voltage V _CC, the forward voltage V of special-purpose CD _fAnd variation of ambient temperature (also influences V _f) aspect fluctuation is very strong, and therefore, is highly suitable for using in very wide data transmission applications scope.In addition, the 127CDDC of unit is sufficiently strong, they neither need to cover CD, also without any need for manual adjustment, for example, reside in the steady resistance in the CLEB, and their allow to use and be connected in series to the low resistance sense resistor of CLEB, thereby the localized heat loss is reduced to minimum value with relevant power consumption.

The drive circuit of above-mentioned discussion is important for diffused infrared (being " DIR " hereinafter).For example, because DIR stands very strong decay at it from the path of transmitted from transmitter to receiver entity, for desirable the infrared transmitter be with possible accurate way driving LED array (with regard to electric current) so that each the WIMS unit that makes generation is carried out in the mode of other WIMS unit of being similar to generation.If use lower accuracy drive circuitry, so, carry from the useful infrared energy of the signal of transmitted from transmitter to receiver and can from the unit to the unit, change significantly for LED.This mixes with the very strong decay of DIR can be so that the system value territory changes to the WIMS unit significantly from the WIMS unit.Therefore, a user can obtain having the system of a codomain, and another user can obtain having the system of remarkable different codomains, and this will make it be difficult to for the user of routine this system " is described " reasonably.Really, do not have this accurate drive circuit, use the WIMS system of diffused infrared may cause actual user's electronic use useless.Only the strict control of the electric current of CLEB can be guaranteed tight tolerance limit, compatibility and repeatability among the different unit outside the production line.The strict control of CLEB electric current also can be guaranteed the variation of the external parameter of the forward voltage of similar temperature, power supply and LED insensitive.Put it briefly, the specially designed led array drive circuit of the present invention is obviously useful for the wireless multimedia system that uses diffused infrared.Unit 127 also can optionally feed back to signal processing unit 126 and microcontroller unit 131 (for example, malfunction) with the digital signal indication.Finally, DS/C 120 sends light infrared transmission 130 to single or a plurality of radio receivers.This signal has an infrared wavelength, and does not relate to full-duplex communication, but the one-way communication from DS/C 120 to single or a plurality of radio receivers.

DS/C 120 optionally adopts microcontroller subsystem (being " MCS " hereinafter) 131.Whenever DS/C 120 is energized, and in the DS/C 120 of similar units 126, unit 124 and unit 127 (infrared transmitter driver) during the various unit of pre-programmed, MCS 131 starts.MCS 131 (for example, flowing through the data rate of this system, perhaps faulty indication) is optionally given with feedback information in these unit.MCS 131 also can be optionally interacts with power supply/battery and the charhing unit 135 that is used for exchange message (for example, state information, for example, overheated condition).MCS 131 can be optionally from two independent unit, and remote control receiving element 132 and user manually control/indicator unit 133 reception subscriber control informations.DS/C user can control and interact with two kinds of modes and DS/C 120: a) infrared or radio frequency (RF) control signal 136 is sent to the receiver of remote-control sytem 132 that is embedded in the DS/C from moving the transmission remote control equipment.Receiver of remote-control sytem 132 is decoded from the control signal of user's reception, and they are exported to the MCS 131 that is used to control DS/C 120 (for example, close DS/C 120, quiet some voice-grade channel, perhaps change various system sound volume control setting).Digital control data (for example, volume, high pitch, bass or the like) can optionally send signal processing unit 126 to, be used for mixing with the audio frame of processing in seamless mode, send radio receiver to through the wireless optical channel then, be used to control its local parameter setting, b) DS/C 120 can comprise optionally that also being used for manual adjustment DS/C (for example controls, volume or bass control), and (for example be used for from DS/C, little lcd screen, perhaps various indication LED, for example, " power supply good " or " standby mode ", perhaps " mistake " indication) user that receives visual feedback manually controls/indicator unit.The user can select to use this two unit 132 and 133, perhaps these only one and DS/C interaction.MCS 131 can be further be made up of memory module and more peripheral components, and this peripheral components is followed the MCS unit usually, similar I/O mechanism, interruption controls mechanism or the like.DS/C 120 comprises that optionally connector via special use is to the internet or the connection (not shown) of PC and be used for audio content and be directly downloaded to cable that player is consistent (for example, USB).DS/C 120 can optionally also be included in the medium and small installation of loud speaker/earphone device 138.When using cell phone 310, the cellular calls that the user can receive into.MCS 131 detects these via interacting with cellular digital audio connector 321, stop ongoing Audio Processing via DS/C, and the audio frequency 123 that will come in is directed to loud speaker/earphone, so that reproduce the call Speech Communication and hear the caller.The user need not to pick up cell phone from the DS/C housing then also can be to loud speaker/earphone speech.DS/C 120 also adopts unit 135, power supply/battery and charhing unit.This unit can be embedded among the DS/C, perhaps can be an external equipment (for example, wall is installed or desktop power adaptor/).Unit 135 is connected to supply socket, and network supply is converted to direct current (DC) voltage that is needed by DS/C 120.Unit 135 can be optionally for one group of rechargeable battery of DS/C operation employing.In this case, this unit also comprises the charging circuit that is used for the battery periodic charge.

Fig. 8 describes the internal structure of the loud speaker embodiment 140 based on infrared wireless active of the present invention.The loud speaker 140 of wireless active can be born the wireless back preceding loud speaker around the wireless active of the multimedia system of the active loud speaker of active loud speaker, wireless inferior bass, Radio infrared, and even the task of the center loudspeaker of wireless active possibly.The loud speaker 140 of wireless active receives infrared transmission 141 via its infrared window 156.These are to be received by the sensor entity 142 that optionally is made of one or more photodiode (for example, sensor array).The light intensity signal that photodiode will be come in (carrying this information) is converted to an electronic signal, and it is then by follow-up processing of circuit.Follow-up circuit optionally comprises the receiver front end 143 with several major functions.

Receiver front end 143 comprises only simulation, perhaps " composite signal ", analog-and digital-treatment circuit, it can optionally comprise:

A) low noise amplifier (being " LNA " hereinafter) is enlarged into sensor output signal is worth the further signal of processing.Optionally, LNA is used as transimpedance amplifier (TIA) and installs, and sensor current signal is converted to the voltage signal of an amplification.

B) front end 143 can comprise single LNA channel or a plurality of LNA channel, on the single photodiode of each channel attached to aforesaid sensor array.

C) optionally, front end 143 comprises an analog synthesizer, and its output with a plurality of photodiode LNA channels is sued for peace to receive bigger amplifying signal.

D) optionally, front end 143 comprise high-speed sampling simulate digital quantizer (ADC) circuit with will as from the analog signal conversion of synthesizer output for having certain bit width (for example, 8 s') digital signal.Perhaps, this signal continues to handle with analog form in receiver front end.

E) front end 143 can optionally comprise the filter (for example, simulation or numeral) of various kinds, to leach to ambienting lighting environment intrinsic wireless optical interchannel noise and interference.This filter can comprise that as an example circuit of high pass filter is to alleviate the electronic noise that sends from the fluorescent lamp based on electric ballast.This filter can also leach the electronic emission of the various kinds of remote control circuit and plasma TV.Can use additional filter (for example, low pass filter) to go to leach then and be the intrinsic high-frequency noise of the signal that arrives at from the light wireless channel.If digital, as an example, this filter can be taked the structure of finite impulse response filter (being " FIR " hereinafter).Embodiment based on simulation can constitute passive or active filters solutions (for example, using operational amplifier).

F) front end 143 comprises also that typically automatic gain control (being " AGC " hereinafter) circuit is to allow the relative wide dynamic range operation of this WIMS.Wide dynamic range will allow this system to go large-scale scope work between the transmitter and receiver subsystem.AGC can take fully digital simulation or composite signal embodiment (for example, digital feedback controlling schemes).

G) front end 143 can also comprise the back amplifying circuit, further to amplify this signal before further handling.

H) front end 143 can optionally comprise frequency downconverted circuit and other relevant circuit (for example, as mentioned above, under situation about realizing based on the frequency technique of carrier wave).Alternatively, (for example, pulse under) the situation, it will adopt threshold process (for example, notch) technology, and it comprises the decision circuit of working based on from the auto-adaptive parameter (for example, the signal strength signal intensity of reception) of extraneous some reception in the infrared processing of base band.

I) front end 143 can also comprise the circuit of this conversion of signals for certain form of numeral output expression (for example, LVDS, LVTTL or the like).

In the next unit of handling in following the tracks of is clock and data recovery (being " CDR " hereinafter) unit 144.This unit has the operation of twice.It can optionally comprise the signal to noise ratio (hereinafter be " SNR ") of digital filtering data processing circuit with further enhancing input signal (for example, leaching external pulse under the situation of baseband modulation technology).Another function is extraction and recovers clock signal intrinsic in the data-signal of coming in, is used for the data-signal of coming in the correct time interval sampling.Optionally, CDR unit 144 adopts phase-locked loop (being " PLL " hereinafter) circuit, be used to produce continuous clock signal as a result, and further (for example handling, remove, take advantage of) afterwards, with it as presenting to audio frequency post-processing unit 147, as further discussing below based on the clock of audio frequency.CDR unit 144 can adopt technology based on low jitter to guarantee the high fidelity audio reproduction quality.In this case, optionally, send and receiver side equipment (that is, DS/C and loud speaker) audio clock is made into identically in general, and the audio sample that loses and the distorted signals of generation therefore can occur not having.

Next unit in tracking is a signal processing unit 145.This unit is to be fed by the numerical data of sending from CDR unit 144.It is equivalent with the unit in DS/C 120 126 as mentioned above basically in function aspects, and still, unit 126 is encoder and modulator parts of this WIMS, and unit 145 is decoder and demodulator parts of this system.The DSP that carries out in this unit can optionally comprise: adopt the carrier frequency demodulation techniques, perhaps mate the base band demodulating technology with the identical technology of describing in the modulating part explanation of unit 126; Remove and action on the data that data go framing and assembling (for example, from non-payload data information, the delimiter of similar preamble, head and various kinds uses header data simultaneously as various receiving equipment parameters) to come in; According to some addressing scheme or header data information, select specific voice-grade channel (L+R); Data de-scrambling, data decryption, data decompression (for example, loss-free decompression technique); Be used to carry out the sample rate conversion (SRC) of voice data from a speed to another resampling; Data Format Transform or the like.The numeral output of this unit is fed to audio frequency post-processing unit 147.Optionally, the form of 145 numerical datas of sending is with pulse-code modulation form (for example, I from the unit ²S audio signal 146).

147 functions of audio frequency post-processing unit are to be converted to the form that can drive audio frequency amplifier 148 from the decoding of signal processing unit 145 receptions and the digital audio-frequency data of demodulation.The PCM that inputs to this unit can take different audio sample rates (for example, 44.1KHz, 96KHz).Unit 147 can optionally be constituted, is used for an analog linearity level audio signals is exported to analogue amplifier 148 by the audio grade digital-analog convertor with various functions (being " DAC " hereinafter) circuit.It all is the Cirrus of the U.S. that the typical DAC equipment that is used for voice applications is two

CS4340 and Texas PCM1600.Unit 147 can also optionally be made up of to PWM transducer/controller PCM, and this PCM is used for the PCM conversion of signals for driving the expression of its pulse width modulation of D class A amplifier A 148 with the PWM input to PWM transducer/controller.This controller can comprise various built-in functions, similar intrinsic volume control programming, and other the programmable DSP function (for example, soft quiet) of using digital algorithm (for example, digital filtering).The control that is used for unit 147 can be optionally from following proposition: signal processing unit 145; MCS 151 as will be described later; Through wireless optical channel from DS/C 120; Via user type control, perhaps these combination.Unit 147 can order it to use various parameters in the process of handling digital audio-frequency data optionally by MCS 151 controls.Unit 147 can return to MCS 151 with various indications, as an example, and similar state information (for example, warning temperature) about amplifier 148.

Amplifier 148 can optionally be analog input, simulation output type amplifier (for example, the A/B class is amplified), for example, and from partly leading of national standard

LM1876; Analog input, D class output type amplifier, for example, from the monolithic dynamical system MP7722; Perhaps PWM input, D class A amplifier A, for example, two all from the U.S. from the monolithic dynamical system

MP8042.Amplifier 148 can be taked various bridge architectures (for example, half-bridge or full-bridge), and the ability of various power output (for example, 20 watts, 50 watts, 100 watts or the like) is arranged.Amplifier 148 can return to feedback information unit 147, as an example, and the superheat state indication.

Unit 150 is the sound speaker driver entity in the loud speaker 140 of wireless active, and it can be made up of bass subelement and high pitch loudspeaker subelement, as example, perhaps these some.Loudspeaker drive 150 is to be presented by the power amplification signal 149 that sends from aforesaid amplifier 148.

Loud speaker 140 based on infrared wireless active can optionally adopt microcontroller subsystem (being " MCS " hereinafter) 151.Whenever loud speaker 140 is energized, and the various unit of in the loud speaker of similar units 145 and 147, programming in advance, MSC 151 starts.These unit can feed back to MCS (for example, flowing through the data rate of this system, perhaps faulty indication) with digital signal information and/or parameter.MCS 151 optionally with power supply/battery and charhing unit 154 interact (for example, state information).MCS 151 optionally manually controls/indicating device 157 receiving control informations from two unit, remote-control receiver 152 and user.The user of this WIMS controls and interacts with 140 of two kinds of modes and wireless active.Infrared or RF control signal 153 is sent remote control equipment and is sent to the remote-control receiver 152 that is embedded in the loud speaker from moving.Receiver 152 is decoded from the control signal of user's reception, and sends them to MCS 151, is used for control loudspeaker 140 (for example, loud speaker shutdown, perhaps speaker volume setting).Loud speaker 140 comprises that optionally the user manually controls/indicator unit 157, is used for manual adjustment control, and receives visual feedback (for example, indication LED, for example, " power supply is good " or " standby mode ", perhaps " mistake " indication) from loud speaker.This user can select to use this two unit 152 and 157, perhaps only these one and loud speaker 140 interactions.

Loud speaker 140 comprises unit 154 (power supply/battery and charhing unit).This unit is embedded in the loud speaker 140 usually, but also can be a powered speakers that is used for middle-size and small-size size, for example＜30 watt external equipment (for example, wall is installed or desktop power adaptor/).Unit 154 is connected to supply socket via cable 155, and network supply is converted to the various direct currents that needed by the loud speaker of wireless active.Unit 154 optionally adopts rechargeable battery for speaker operation.In this case, this unit also comprises the charging circuit that is used for battery charge.

The whole electronic unit of the loud speaker 140 of wireless active can optionally be embedded in one have an independent housing except that loud speaker outer ancillary equipment, be inserted into network supply and feed at the passive loud speaker of indoor deployment via circuit.A representative instance will be one group of back circulating loudspeaker.In this case, conventional passive loud speaker (because the wiring inconvenience is not used it) can use have the above circuit that embeds within it external ancillary equipment (for example, as an after-sale service auxiliary equipment), with by means of presenting them from audio amplifier ANTENN AUDIO on the horizon.

Fig. 9 describes the berth internal structure of station/carriage embodiment 520 of Voice ﹠ Video Radio infrared of the present invention.Station/the carriage (DS/C) 520 that berths be connected to or

Video player perhaps is connected to any other the portable audio/video data Memory player that is called " video player 510 " from it.DS/C 520 has 120 similar electronic circuit and the functional structures with DS/C, and only it is in addition optionally along with the stream audio data are handled the stream video data simultaneously.

DS/C 520 comprises audio/video (A/V) input connector 521, and it can perhaps be used for the independent connector of audio signal input and be used for the independent connector composition that vision signal is imported by single audio/video connector.Each Voice ﹠ Video input connector or its synthetic A/V connector can or be imported analog type signals or digital type signals.This simulation or digital audio and video input signals depend on the type of the video player 510 of use, optionally comprise volume control and other intrinsic Voice ﹠ Video signal attribute of embedding.

Audio input signal 522 and audio frequency pretreatment unit 524 are similarly at audio input signal 123 and the audio frequency pretreatment unit 124 of function and aspect of performance and DS/C 120 respectively, and can not discuss once more in for the detailed description of Fig. 9.Be equivalent to audio frequency pretreatment unit 524, DS/C 520 comprises video preprocessor processing unit 525.Be transfused to video preprocessor processing unit 525 from the vision signal 523 of video player 510 to DS/C 520.No matter respectively with compression (for example, H.264 or MPEG4), still with unpacked format (for example, NTSC, PAL or HDTV), vision signal 523 optionally is numeral in essence or simulates in essence.Unit 525 optionally is made of video level analog to digital video converter.This transducer works to the analog video signal of coming in, and the digital video signal of output compression.H.264 or MPEG4 the compressed format of this digital video optionally is.

Unit 525 can optionally receive incompressible digital of digital video data, and can use an electronic commutator equipment that is consistent to compress it then.Unit 525 can also optionally directly receive compressed digital of digital video data.When receiving incompressible digital of digital video data, when the analog video data that perhaps will come in was converted to incompressible digital of digital video data, video preprocessor processing unit 525 can further move this digital non-compression video data with various methods.For example, unit 525 can use the dynamic video image of similar color conversion and algorithm to strengthen operator, video data sharpening algorithm or be used to reduce the image of video data convergent-divergent operator of digital video data stream bandwidth, thereby and allow its have limited communication bandwidth based on infrared wireless optical channel on transmit.Used after aforesaid various dynamic video operator moves it at it, unit 525 is compressed digital video data optionally.

Voice ﹠ Video pretreatment unit 524 and 525 optionally is that they go to use MCS 529 controls of various parameters by the simulation of arriving in processing or based on order in the process of the Voice ﹠ Video data flow of numeral.

Next unit in DS/C 520 is a signal processing unit 526.Unit 526 has the function with unit 126 equivalences in audio frequency DS/C 120 only.Pretreated digital audio and video datas are accepted in unit 526, and before it works to this data flow, and these data flow are synthesized the data flow of A/V data, are used for preparing to go to send on the wireless optical channel.Unit 526 can optionally be provided for the Voice ﹠ Video frame that interweaves, can mix this data with another effective means, is used for sending on the wireless optical channel, perhaps even can further compress synthetic Voice ﹠ Video data flow.The output of this unit is fed to unit 527, and the emission radio front-end circuit of DS/C 520 is equivalent in essence, and is installed to the unit 127 in DS/C 120.The difference of understanding can be because the synthetic Voice ﹠ Video data ratio bandwidth that only voice data need be bigger, unit 527 comprise faster with higher bandwidth electronic circuits with and relevant electro-optical device, be used on the wireless optical channel, sending modulation and coded data.Unit 527 can optionally feed back to signal processing unit 526 with the signal indication, and feeds back to MCS 529 (for example, malfunction).Finally, DS/C sends infrared transmission 530 to single or a plurality of receiving equipments.

DS/C 520 optionally adopts microcontroller subsystem (being " MCS " hereinafter) 529.Whenever the DS/C various unit that power on and in DS/C, programme in advance respectively, similar signal processing unit 526, Voice ﹠ Video pretreatment unit 524 and 525 and during infrared transmitter driver 527, MSC 529 starts.These unit can feed back to MCS 529 (for example, flowing through the data rate of this system, perhaps faulty indication) with digital signal information and parameter.MCS 529 also can be optionally with power supply/battery and be used to exchange numerical data (for example, state information, and more than find out) charging 535 interact.MCS can be optionally with the identical mode at the MCS 131 of DS/C 120 of being used for as mentioned above from two unit receiving control informations, remote-control receiver unit 531 and user manually control/indicator unit 532.DS/C 520 adopts unit 535, power supply/battery and have charger device with unit 135 identical functions of DS/C 120.

DS/C 520 comprises that optionally connector via special use is to the internet or the connection (not shown) of PC and be used for the Voice ﹠ Video content and be directly downloaded to cable that video player 510 is consistent (for example, USB).

Figure 10 describe in detail one of the present invention based on infrared wireless digital TV-set (hereinafter for " wireless DTV ") embodiment 550.Wireless DTV 550 can be the dynamic video reproducer of LCD TV, plasma TV (PTV) or wide region, similar projecting apparatus, PC screen, game machine screen or the like.The internal structure of wireless DTV 550 is briefly said the loud speaker 140 that is similar to wireless active.Sensor array element 552, receiver front end unit 553, CDR unit 554, signal processing unit 555, MCS unit 559, remote-control receiver unit 561, user manually control/and indicator unit 563 and DTV power subsystem 560 are similar in installation and function aspects with unit 142,143,144,145,151,152,157 (equally all being called identical) and 154 based on the loud speaker 140 of infrared wireless active respectively.

But, comparing with wireless active loud speaker 140, some internal circuits of these different unit of wireless DTV 550 can be different with performance parameter setting.For example, sensor array 552 can be provided for the electro-optical device of high bandwidth more so that high bandwidth digital video data can be sent on optical channel; Receiver front end 553 and CDR 554 can optionally also be provided for faster rate circuit of wireless DTV work or the like.Another important function is that signal processing unit 555 optionally abandons the audio frame number certificate from whole Voice ﹠ Video data flow, is used for only video information being sent to screen.

The function of video post-processing unit 556 is with 555 decodings that receive and the digital of digital video data of demodulation are converted to the form that can drive screen drive 557 from the unit.556 input is the digital of digital video data from signal processing unit 555 to the unit.Typically, unit 556 with digital of digital video data (being compressed as much as possible) be converted to be used to drive screen driver circuit 557 analog video signal (for example, NTSC).Unit 556 is optionally by similar intrinsic color conversion schemes, and the various built-in functions of other programmable digital processing function are formed.The control that is used for this unit can be optionally proposes from signal processing unit 555, and/or through the wireless optical channel from DS/C 520, perhaps via user type control, similar telecontrol transmitter or local manually control.Video post-processing unit 556 can be optionally by MCS 559 controls, and it goes to use various parameters MCS 559 orders in the process of the digital of digital video data that processing is arrived at.Unit 556 can return to MCS 559 as an example with the various indications about the state information of screen drive 557.Unit 558 is the screen entity based on infrared wireless DTV 550 that driven by unit 557.It can adopt the various technology as know the sixth of the twelve Earthly Branches in similar lcd screen, plasma screen, OLED screen or other industry.Wireless DTV 550 optionally adopts MCS 559, when DTV 550 powers on and programme various unit in advance in the wireless DTV 550 of similar signal processing unit 555 and video post-processing unit 556, and its startup.These unit can feed back to MCS 559 (for example, flowing through the data rate of this system, perhaps faulty indication) with digital signal information and parameter.MCS 559 optionally interacts with the DTV power subsystem 560 that is used for swap data (for example, state information).MCS 559 can be optionally from two unit receiving control informations, and aforesaid remote-control receiver unit 561 and user manually control/indicator unit 563 these two unit receiving control informations.

Figure 11 describe in detail one of the present invention based on infrared wireless digital TV-set (hereinafter for " wireless DTV ") embodiment 570.Except two stereo sound band loudspeakers are embedded in the wireless DTV and are the part of its structure, wireless DTV 570 is installing and function aspects is similar to wireless DTV 550.In this case, wireless DTV 570 comprise audio frequency post-processing unit 576 and video post-processing unit 577 with and relevant stereo AMP 578 and screen drive 579 both.Wireless DTV 570 comprises screen 583 and is used for a left side and two sound speakers 581 of right loudspeaker sound reproduction and 582.Except the synthetic Voice ﹠ Video data that its processing, decoding and demodulation are arrived at from A/V DS/C 520, signal processing unit 575 is similar to the unit 555 of wireless DTV 550 in essence.The first front unit of signal processing unit 575 decomposition from the also treated path that the wireless optical channel arrives at (promptly, unit 572,573 and 574) common digital audio that interweaves and the video data of handling, and present two different data flow (audio data stream is presented to unit 576, and video data stream is presented to unit 577).Digital audio and video data frame stream that unit 575 uses the data of going to arrive at about the priori of synthetic/deinterleaving method of Voice ﹠ Video frame " to remove frame " for separating.Other function of all of wireless DTV 570 is similar in function and configuration aspects and wireless DTV 550.Wireless DTV 570 optionally needs bigger bandwidth in its various processing units, so that the processing of handling relative Voice ﹠ Video data with the only video data that is used for wireless DTV 550 to be provided.

Though above description comprises many particularity, these should not be considered to limit the scope of the invention, but as the example of embodiment.Many other the variations that do not break away from spirit of the present invention are admissible.Therefore, scope of the present invention should be by illustrational embodiment, but is determined by appended claim and legal equivalence thereof.

Claims (20)

1, a kind of Radio infrared data transmission system comprises:

A) comprise the portable data storage device of data;

B) be applicable to releasedly the station of berthing with the portable data storage device engagement, thereby can use data and can recover it;

C) be applicable to that reception wirelessly is included in the data receiver of data in the portable data storage device that the wireless optical channel sends; With

D) be used for data being sent to the infrared facility that disseminates of data receiver via the station of berthing from portable data storage device through the wireless optical channel wireless with one way system, the described device that is used for wireless transmission is arranged on the station of berthing, and the described device that is used for wireless receiving is arranged on data receiver.

2, system according to claim 1, wherein, described data comprise voice data, and described portable data storage device is an audio player.

3, system according to claim 1, wherein, described data receiver is embedded in the loud speaker.

4, system according to claim 1, wherein, described data receiver is an external ancillary equipment.

5, system according to claim 1, wherein, described system comprises a plurality of data receivers, these a plurality of data receivers are applicable to and wirelessly receive the data that are included in the portable data storage device.

6, system according to claim 2, wherein, described voice data is digital.

7, system according to claim 2, wherein, described voice data is analog.

8, system according to claim 2, wherein, described audio player comprises audio codec.

9, system according to claim 1, wherein, described data comprise voice data, and described portable data storage device is the audio player that is embedded in the cell phone.

10, system according to claim 9, wherein, described audio player comprises audio codec.

11, system according to claim 1, wherein, described data comprise voice data, and described portable data storage device is the satellite radio devices with audio codec of embedding.

12, system according to claim 1, wherein, described data comprise the Voice ﹠ Video data, and described portable data storage device is the Voice ﹠ Video player.

13, system according to claim 12, wherein, described Voice ﹠ Video player comprises audio codec and Video Codec.

14, system according to claim 1, wherein, described data receiver is the Digital Television that comprises loud speaker.

15, system according to claim 1, wherein, described system comprises a plurality of data receivers, and these a plurality of data receivers are applicable to and wirelessly receive the data that are included in the portable data storage device, and described data receiver comprises loud speaker and Digital Television.

16, a kind of wireless infrared multimedia system comprises:

A) comprise the portable data storage device of Voice ﹠ Video data;

B) have the carriage that is used for releasedly with the device of portable data storage device engagement, thereby can use the Voice ﹠ Video data and can recover it;

C) be applicable to that reception wirelessly is included in the data receiver of the Voice ﹠ Video data in the portable data storage device that the wireless optical channel sends; With

D) be used for via carriage from the disseminate infrared facility of portable data storage device through wireless optical channel wireless ground transmission Voice ﹠ Video data to data receiving equipment, the described device that is used for wirelessly transmitting is arranged on carriage, and the described device that is used for wirelessly receiving is arranged on data receiver.

17, system according to claim 16, wherein, described portable data storage device is the Voice ﹠ Video player.

18, system according to claim 17, wherein, described Voice ﹠ Video player comprises audio codec and Video Codec.

19, system according to claim 16, wherein, described data receiver is the Digital Television that comprises loud speaker.

20, system according to claim 16, wherein, described system comprises a plurality of data receivers, these a plurality of data receivers are applicable to and wirelessly receive the Voice ﹠ Video data that are included in the portable data storage device, and described data receiver comprises loud speaker and Digital Television.

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