CN104796744B - Audio/video player system - Google Patents
Audio/video player system Download PDFInfo
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- CN104796744B CN104796744B CN201410025951.4A CN201410025951A CN104796744B CN 104796744 B CN104796744 B CN 104796744B CN 201410025951 A CN201410025951 A CN 201410025951A CN 104796744 B CN104796744 B CN 104796744B
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- media apparatus
- power supply
- serial bus
- universal serial
- audio
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Abstract
The present invention provides a kind of audio/video player system, comprising: one first media apparatus；And one second media apparatus; wherein first media apparatus transmits (USB Power Delivery) interface by a universal serial bus power supply and is attached with second media apparatus; and data and a protected video content are transmitted to second media apparatus simultaneously by the universal serial bus power supply passing interface, wherein second media apparatus is via the universal serial bus power supply passing interface to play the protected video content on one first electronic device.Audio/video player system of the invention can carry out simultaneously the transmission of audio-visual and data by USB interface, so as to allowing user to obtain more preferably use feeling.
Description
Technical field
The present invention relates to video systems, more particularly to transmit the video playing of video and data simultaneously using USB interface
System.
Background technique
In current audio/video player system, to play shielded video content, specific multimedia is generally required
Interface (e.g. HDMI, DisplayPort) carrys out transmitting audio-video data.However, in current electronic device (such as personal electricity
Brain) on be often equipped with USB interface with convenient for users to allowing electronic device to carry out data transmission with external USB device, if electric
Sub-device multimedia interface to be equipped with or the biggish specific transmission interface of bandwidth (such as Lightning bolt or
Thunderbolt interface), it generally requires to spend additional cost.Therefore, it is necessary to a kind of audio/video player systems to be connect by USB
Mouth can carry out the transmission of audio-visual and data simultaneously, so as to allowing user to obtain more preferably use feeling.
Summary of the invention
In order to overcome the drawbacks of the prior art, the present invention provides a kind of audio/video player system, comprising: one first media dress
It sets；And one second media apparatus, wherein first media apparatus transmits (USB Power by a universal serial bus power supply
Delivery) interface is attached with second media apparatus, and is passed simultaneously by the universal serial bus power supply passing interface
Send data and a protected video content to second media apparatus, wherein second media apparatus is via the universal serial bus
Power supply passing interface on one first electronic device to play the protected video content.
Method, system and device of the invention can also be with procedure code kenel by some transmission media, such as electric wire or electricity
Cable, optical fiber or any transmission kenel are transmitted, wherein when procedure code is by machine, when receiving, be loaded into and execute such as computer,
This machine becomes to participate in the device of the invention or system.In general service processor implementation, procedure code combination processing
Device provides an operation and is similar to the unique apparatus for applying particular logic circuit.
Detailed description of the invention
Fig. 1 is the schematic block diagram for showing the audio/video player system of an embodiment according to the present invention.
Fig. 2 is the more detailed block diagram for showing the audio/video player system 10 of an embodiment according to the present invention.
Fig. 3 A is the schematic diagram for showing the USB PD setting shelves in an embodiment according to the present invention.
Fig. 3 B is the definition of pin position for the USB PD standard used in integrated interface in an embodiment according to the present invention that shows
Schematic diagram.
Wherein, the reference numerals are as follows:
10: audio/video player system；
100,200~media apparatus；
112,212~processing unit；
114,214~device management unit；
116,216~source administrative unit；
118,218~power-supply unit；
120,220~USB interface；
122,222~multimedia interface；
124,224~integrated interface；
130,240~multiplexer；
210,230~electronic device.
Specific embodiment
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, a preferred embodiment is cited below particularly, and match
Attached drawing is closed, is described in detail below.
Fig. 1 is the schematic block diagram for showing the audio/video player system 10 of an embodiment according to the present invention.As shown in Figure 1, view
Frequency play system 10 includes media apparatus 100 and media apparatus 200, and wherein media apparatus 100 and media apparatus 200 pass through USB
Interface and be connected with each other.In one embodiment, one of them of media apparatus 100 or media apparatus 200 can be used as a media and mention
Donor (media provider) or an original device (source device), and another can be used as media recipient
(media consumer) or reception device (sink device).For ease of description, with media apparatus in aftermentioned embodiment
100 are illustrated for being used as reception device as original device, media apparatus 200.In simple terms, media provider can pass through
USB interface provides a media data flow and HDCP signal to media recipient, and media recipient can decode media data flow simultaneously
In a resulting image/video of display unit broadcast decoder.
Fig. 2 is the more detailed block diagram for showing the audio/video player system 10 of an embodiment according to the present invention.As shown in Fig. 2, matchmaker
Body device 100 includes a processing unit 112, a device management unit 114, a source administrative unit 116, a power supply device
118, a usb 1 20 and a multimedia interface 122.Each element 212~222 in media apparatus 200 corresponds to media apparatus
Element in 100 only illustrates each element in media apparatus 100 in the examples described below, and those of ordinary skill in the art work as can
Understand the implementation detail of each element in media apparatus 200, therefore its details is repeated no more in this.In one embodiment, multimedia
Interface 122 meets the standard of HDMI and/or DisplayPort, and usb 1 20 meets the transmitting of universal serial bus power supply
The standard of (Universal Serial Bus Power Delivery).In some embodiments, multimedia interface 122 and USB
Combinable interface 120 is an integrated interface 124 (e.g. supporting the interface of USB PD specification).Power supply device 118 to
Power supply needed for each element in media apparatus 110 is provided, and the operation voltage of the VBUS foot position in usb 1 20 is provided.Come
Whether source control unit 116 has a detection signal (e.g. hot plug for electronic device insertion multimedia interface 122 to receive
Signal) or whether have the detection signal (an e.g. USB PD detect signal) of electronic device insertion usb 1 20, and will inspection
It surveys signal and is provided to device management unit 114.Device management unit 114 is to control whether power supply device 118 provides electricity
Source is to corresponding element.
In addition to this, for supporting DisplayPort standard, device management unit 114 also can determine whether that being connected to USB connects
Whether the media apparatus of mouth 120 is the video-unit for supporting USB Power Delivery (USB PD) and HDCP transmission standard,
E.g. judge whether media apparatus 150 has been connected with the video-unit of USB PD is supported, device management unit 114 can simultaneously be sentenced
Whether break, which has electronic device to be inserted into multimedia interface 122, is attached.Further, device management unit 114 may be used also
The extension for the electronic device (such as electronic device 210) for being connected to usb 1 20 by a channel Auxiliary transmission is shown
Capability identification data (Extended Display Identification Data, EDID) transmit one to processing unit 112
Whether hot plug detects signal to processing unit 112, have any support hot plug (such as to meet so as to notifier processes unit 112
The standard of HDMI, DisplayPort) electronic device be inserted into multimedia interface 122.In one embodiment, device management
Unit 114 can be realized by a microcontroller (microcontroller).
Fig. 3 A is the schematic diagram for showing the USB PD setting shelves in an embodiment according to the present invention.As shown in Figure 3A, USB
Define setting shelves 0~5 in the specification of PD 1.0, each shelves that set define in varied situations used in the USB PD interface
The voltage and current of voltage and current, some of setting shelves is greater far beyond USB 3.0/2.0.In addition to this, of the invention
Also define a setting shelves 6, user can the voltage and current size that uses needed for it of self-defining, so as in integrated interface
Data and protected video content (protected video content) are transmitted simultaneously.In addition to this, device management unit
114 can also know when be switched to high-speed transfer, receive extension display capabilities identification data, Yi Jichuan according to setting shelves 6
Send HDCP data.
Fig. 3 B is the definition of pin position for the USB PD standard used in integrated interface in an embodiment according to the present invention that shows
Schematic diagram.As shown in Figure 3B, 14 foot positions are defined in the specification of USB PD 1.0, are foot bit number 1~13 and shell respectively
(shell), wherein each foot bit number has a corresponding signal name.It is noted that in the specification of USB 2.0, it is only fixed
Justice foot position 1-4, implies that respectively VBUS, D-, D+ and GND foot position, this 4 foot position can be used to transmit data with non-high-speed.
Further, the foot position 10 and 11 in USB PD specification is the detection foot position PD DETECT 1 and PD DETECT of USB PD device
2, media apparatus 100 and 200 is to detect the specification whether connected USB device supports USB PD by this two foot positions.It removes
Except this, the foot position 12 and 13 in USB PD specification is to have detected whether USB device insertion.Carry out source control list in the present invention
Member 116 can generate corresponding detection signal to device management unit 114 according to above-mentioned foot position respectively.Then device management unit
114 can transmit prolonging for connected electronic device by the channel Auxiliary defined in DisplayPort specification respectively
It stretches display capabilities identification data, HDCP signal and hot plug and detects signal to processing unit 112.Similarly, processing unit 112 is also
It can be by the channel Auxiliary and via device management unit 114 HDCP signal is sent to media by usb 1 20
Device 200.
It is noted that traditionally, foot position 10 and 11 is detecting whether connected USB device supports USB PD to advise
With regard to no longer persistently being detected after lattice.After having detected connected USB device and whether having supported USB PD specification, matchmaker of the invention
Body device 100 can be using foot position 5~9 come the shielded video content of High Speed Transfer.Still further, processing unit 112 is
It can be used foot position 5~9 as Lane 0 and Lane 1 defined in DisplayPort specification with High Speed Transfer video data (example
Such as transmitted with the speed of 720P@30FPS) it plays out to electronic device 210.For processing unit 112, can only it receive
To the detection signal for extending display capabilities identification data and USB PD device of standard, additional judgment mechanism is not needed.More
Furthermore, when processing unit 112 is intended to pass through integrated interface 124 while transmitting data and shielded video data, data
Part can be transmitted by foot position defined in script USB 2.0, and need HDCP signal cooperate video data then may be used
It is transmitted in a manner of the Lane 0, the Lane 1 that meet DisplayPort specification the foot position 5~9 in USB PD specification, wherein
Lane 0 and Lane 1 refers to signal differential pair (signal differential pair).
In one embodiment, media apparatus 200 is, for example, a USB video external connection box comprising USB 3.0 or 2.0 interfaces,
HDMI interface, and/or DisplayPort interface.Media apparatus 200 has detected whether electronic video equipment (such as electronic device
230) it is inserted into the multimedia interface of HDMI or DisplayPort etc., such as detects foot using the PD device in USB PD interface
Position (such as PD DETECT 1/PD DETECT 2) and insertion detection foot position (such as INSERTION DETECT).Media dress
The extension display capabilities identification data of electronic device 230 can be obtained by accessory channel by setting the processing unit 212 in 200.Because
Media apparatus 200 has passed through USB PD interface and has been connected with media apparatus 100, and the processing unit 212 in media apparatus 200 also may be used
The extension display capabilities of electronic device 230 are identified that data transmission to processing unit 112 (such as passes through by USB PD interface
VBUS foot position).At this point, the processing unit 112 in the media apparatus 100 then judge can the shielded video content of High Speed Transfer extremely
When media apparatus 200, then processing unit 112 then receives foot position (example using the high-speed transfer foot position in USB PD interface and at a high speed
Such as the foot position 5~9 in Fig. 3 B) with the shielded video content of High Speed Transfer to media apparatus 200, and transmitted by VBUS foot position
HDCP signal needed for decoding.Then, the processing unit 212 of media apparatus 200 by the HDCP signal received and can then be protected
The video content of shield is sent to electronic device 230 and decodes and play out.
Method of the invention or specific kenel or part thereof can be contained in tangible media with the kenel of procedure code, such as soft
Disk, disc, hard disk or any other machine-readable (such as readable in computer) store media, wherein when procedure code is by machine
Device, when being loaded into and execute such as computer, this machine becomes to participate in the device of the invention or system.Method of the invention, system
With device can also with procedure code kenel by some transmission media, as electric wire or cable, optical fiber or any transmission kenel into
Row transmission, wherein when procedure code is by machine, when receiving, be loaded into and execute such as computer, this machine becomes of the invention to participate in
Device or system.In general service processor implementation, procedure code combination processing device provides an operation and is similar to using specific
The unique apparatus of logic circuit.
Though the present invention is disclosed as above with preferred embodiment, the range that however, it is not to limit the invention, any this field
Those of ordinary skill, without departing from the spirit and scope of the present invention, when can do a little change and retouching, thus it is of the invention
Protection scope is subject to view range defined in the attached claims.
Claims (6)
1. a kind of audio/video player system, comprising:
One first media apparatus；And
One second media apparatus, wherein first media apparatus passes through a universal serial bus power supply passing interface and second matchmaker
Body device is attached, and transmits data and a protected video content simultaneously by the universal serial bus power supply passing interface
To second media apparatus,
Wherein second media apparatus is via the universal serial bus power supply passing interface on second media apparatus one
The protected video content is played on one electronic device,
Wherein first media apparatus includes:
One first processing units；
One device management unit；And
One source administrative unit；
Wherein second media apparatus via the universal serial bus power supply passing interface on second media apparatus obtain this
The one of one electronic device extends display capabilities and identifies data, and passes through the universal serial bus power supply on second media apparatus
Passing interface is by extension display capabilities identification data transmission to the device management unit, and the device management unit is auxiliary by one
Help channel by the extension display capabilities identify data transmission to the first processing units,
Wherein the first processing units transmit a high bandwidth digital content protection signal to the device management by the accessory channel
Unit, and the device management unit passes through one in the universal serial bus power supply passing interface on first media apparatus
The high bandwidth digital content protection signal is sent to second media apparatus by VBUS foot position.
2. audio/video player system as described in claim 1, wherein first electronic device supports DisplayPort specification.
3. audio/video player system as described in claim 1, wherein first media apparatus further includes a multiplexer, and should
First processing units also can control multiplexer selection transmission data or transmit the protected video content to one second electricity
Sub-device.
4. audio/video player system as described in claim 1, wherein using universal serial bus electricity in the source administrative unit
The first power supply transmitting detection foot position and second source transmitting detection foot position in the passing interface of source, which detect a second electronic device, is
After no support universal serial bus power supply transmitting specification, first processing units use the universal serial bus power supply passing interface
In High Speed Transfer foot position and high speed receive foot position to transmit the protected video content to the second electronic device.
5. audio/video player system as described in claim 1, wherein the device management unit apply a setting shelves with notify this
One processing unit is transmitted data or transmits the protected video content.
6. audio/video player system as described in claim 1, wherein the source administrative unit has also detected whether one second electronics
Device is inserted into the universal serial bus power supply passing interface in first media apparatus,
Wherein when detecting that the transmitting of the universal serial bus power supply that the second electronic device is inserted into first media apparatus connects
Mouthful, which also transmits a hot plug and detects signal to the first processing units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025951.4A CN104796744B (en) | 2014-01-20 | 2014-01-20 | Audio/video player system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410025951.4A CN104796744B (en) | 2014-01-20 | 2014-01-20 | Audio/video player system |
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| Publication Number | Publication Date |
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| CN104796744A CN104796744A (en) | 2015-07-22 |
| CN104796744B true CN104796744B (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410025951.4A Active CN104796744B (en) | 2014-01-20 | 2014-01-20 | Audio/video player system |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6613369B2 (en) * | 2016-04-26 | 2019-11-27 | マクセル株式会社 | Video output system, video output device, and connection cable |
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| US8848910B2 (en) * | 2009-04-10 | 2014-09-30 | Hewlett-Packard Development Company, L.P. | HDCP video over USB |
| US20120086777A1 (en) * | 2010-10-08 | 2012-04-12 | Industrial Technology Research Institute | Systems and methods for detecting and displaying three-dimensional videos |
| US20130286027A1 (en) * | 2012-04-30 | 2013-10-31 | Bernard D. Desselle | Graphics to universal serial bus conversion |
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| CN101334762A (en) * | 2007-10-12 | 2008-12-31 | 硅谷数模半导体（北京）有限公司 | Data-transmission system for computer |
| CN201533368U (en) * | 2009-09-28 | 2010-07-21 | 乐金电子(中国)研究开发中心有限公司 | Video processing projection box |
| CN102377970A (en) * | 2011-10-27 | 2012-03-14 | 浙江一舟电子科技股份有限公司 | MHL (Mobile High-Definition Link) data conversion system |
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| CN104796744A (en) | 2015-07-22 |
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