KR0153824B1 - Distribution type subscriber indoor apparatus for an optic cable tv - Google Patents

Abstract

In the present invention, a distributed subscriber premises device for an optical cable television is a distributed subscriber premises device for an optical cable television to receive cable television services independently from each other in a separate room away from the subscriber premises when receiving service using an optical cable television. Decentralized subscriber premises equipment for optical cable television, which is composed of a single subscriber premises that provides service through the optical subscriber network, so that when a person receives a CATV or stereo service in a different room, there is a lot of need for user registration. The problem arises, and the power consumption of the backup battery used in the event of a power outage is very large, so that the problem can not be utilized for many hours, in the present invention, the subscriber premises equipment is installed in the inlet in the home photoelectric conversion and demultiplexing top By separating and configuring each device and each service as maximum as three devices provided to the user, the CATV service can be independently received from each other in a separate room, and the backup battery is detached and installed to extend backup time in case of power failure. Accordingly, the subscriber apparatus can be miniaturized.

Description

Distributed subscriber premises and power monitoring device for optical cable television

1 is a block diagram of a typical subscriber premises device for an optical cable television.

2 is a block diagram of a distributed subscriber premises device for an optical cable television according to the present invention.

FIG. 3 is a block diagram illustrating a photoelectric conversion unit in FIG. 2.

4 is a block diagram illustrating a configuration of subscriber device 1 in FIG.

5 is a configuration block diagram of subscriber apparatuses 2 and 3 in FIG.

6 is a configuration diagram of the power monitoring device of the present invention.

7 is an operation flowchart for monitoring power of the present invention.

* Explanation of symbols for main parts of the drawings

1: Optical transmitting and receiving unit 2: Demultiplexing unit

3: phase synchronization loop 4: maintenance / repair unit

5,5A, 5B, 5C: Central processing unit 6,6A, 6B: User matching unit

6-1: remote control matching unit 6-2: user panel matching unit

7,7A, 7B, 7C: Remote Control 8,8A, 8B, 8C: User Panel

9: B channel matching unit 10: Telephone

11: 2B + D channel matching unit 12: Integrated information network terminal

13,13A, 13B: TV / Stereo Audio Decoder

14,14A, 14B, 14C: TV 15,15A, 15B, 15C: Stereo Audio

16,16A, 16B, 16C: DC voltage supply part 17,17A, 17B: Backup battery part

20: photoelectric conversion unit 25, 35, 45: external matching unit

30: subscriber device 1 40: subscriber device 2

50: subscriber unit 3 60: analog digital converter

According to the present invention, when receiving a service using an optical cable television, the cable television service can be independently received from each other in a separate room away from the subscriber's home device, and the optical cable television can be switched using each remote control. The present invention relates to a distributed subscriber premises device.

According to the present invention, a distributed subscriber premises device for an optical cable television includes a CENTRAL OFFICE (CO) for optical transmission after photoelectric conversion of a cable TV (CATV) video or stereo audio signal encoded at a head end. Multiplexed B-channel analog telephone signals and 2B + D narrowband integrated network (ISDN) signals are optically transmitted to distribution centers to provide CATV, stereo audio services, and B-channel analog telephone services to multiple subscribers in a given area. And a distributed subscriber premises device for an optical cable television for 2B + D narrowband ISDN service.

In general, a subscriber premises device for optical CATV that provides CATV service through optical transmission is configured as shown in FIG.

An optical transmitter / receiver 1 for converting an optical signal of a multiplexed B-channel analog telephone signal and a 2B + D narrowband ISDN signal from a distribution device into an electronic signal, and 155 Mb / s data from the optical transmitter / receiver 1 A de-multiplexer (2) for input and demultiplexing, a phase synchronization loop (3) for synchronizing the demultiplexer (2) by inputting a clock of 155 Mb / s at the optical transmitter / receiver (1), The maintenance / maintenance unit 4 for checking the state and transmitting it to the distribution device, the central processing unit 5 for storing and controlling the state and information of the subscriber device, and being operated by the user under the control of the central processing unit 5. A remote control unit 9, a user matching unit 6 for inputting information input by the user panel 8 to the central processing unit 5, and the demultiplexer 2 receiving a clock signal and B channel data B channel matching unit 9 to enable service through the telephone 10 And a 2B + D channel matching unit 11 for receiving a clock signal and 2B + D channel data from the demultiplexer 2 so as to enable S-INTERFACE with the ISDN terminal 12. The demultiplexer 2 receives and decodes the clock signal and the television and stereo audio data, and the service related to the information input by the remote controller 7 or the user panel 8 is provided by the television 14 and the stereo audio ( 15) a television / stereo audio decoder 13 to be provided through the unit, a DC power supply 16 for supplying current for the circuits to operate, and an auxiliary power supply when the power supply by the DC power supply 16 is stopped. It is comprised including the backup battery part 17 used as a power supply.

The operation of the subscriber CATV for optical CATV configured as described above will be described.

The optical transmitter / receiver 1 converts an optical signal input from the distribution device into an electronic signal to generate data of 155 Mb / s and a clock of 155 MHz. Here, data of 155 Mb / s is input to the demultiplexer 2, and a clock of 155 MHz is input to the phase locked loop 3. In this case, the data of 155Mb / s is combined into three 51Mb / s frames, each of which is 51.bM/s of 3 channel data and 2Mb / s of 1 channel B or 2B + D channel data. And 64Kb / s of maintenance data. Therefore, the demultiplexer 2 generates 44.736 Mb / s data and 2 Mb / s B-channel or 2B + D channel data. In the phase-lock loop 3, a clock of 155 MHz is generated at 44.736 MHz and 4 MHz to synchronize the demultiplexer 2. FIG.

The 44.736 Mb / s data demultiplexed by the demultiplexer 2 is input to the television / stereo audio decoder 13 in synchronization with a clock of 44.736 MHz of the phase-locked loop 3. Then, the 2 Mb / s B channel or 2B + D channel data demultiplexed by the demultiplexer 2 is synchronized with the 4 MHz clock of the phase locked loop 3 to the B channel matching unit 9 or 2B + D. It is input to the channel matching section 11. At this time, the B channel matching unit 9 inputs a 4 MHz clock and B channel data of 2 Mb / s to supply a voice signal and a current to the tip and ring terminals connected to the telephone 10 while providing a CEPT framer function. Consisting of a circuit, a COMBO IC, and a three-channel SLIC, the 2B + D channel matching section 11 inputs a 4MHz clock and 2Mb / s 2B + D channel data to the narrowband ISDN terminal through the ISDN terminal 12. And S-matching.

The television / stereo audio decoder 13 outputs service information to the television 14 or the stereo audio 15 according to a signal input through the remote controller 7 and the user panel 8. The signal inputted through the user interface 8 and the user panel 8 is input to the user matching unit 6 including the remote control matching unit 6-1 and the user panel matching unit 6-2, and the central processing unit 5 transmits the signal. Take control.

The central processing unit 5 stores the state of all circuits in the subscriber device and checks it through the maintenance / maintenance unit 4. The state checked in the maintenance / repair unit 4 is transmitted to the distribution device.

In this way, if the subscriber premises is configured in one place, if another person receives CATV or stereo service in a different room, if the channel is adjusted in a room connected directly to the subscriber premises, the other room will be changed as well. The power consumption of the backup battery used during a power outage becomes very large, and it cannot be used for many hours.

For example, if you set up a set-top box in your living room so that you can watch cable TV or satellite broadcasting, and you draw a line from this TV and install TV in another room, you can watch TV in another room When you want to see the go to the living room using the remote control to change the channel of the set-top box was inconvenient to see the changed channel in the room.

In the present invention, the subscriber premises device is intended to solve this problem, and separates the subscriber premises device into a device for photoelectric conversion and demultiplexing and separates the service into a maximum of three devices that are provided to the user in a separate room away from each other. The objective is to enable CATV services to be independent of each other.

Another object of the present invention is to extend the backup time during a power outage by detaching and installing a backup battery, thereby miniaturizing the subscriber device.

That is, the distributed subscriber premises device for optical CATV of the present invention for solving the above object is configured as follows.

Photoelectric conversion means for photoelectric conversion and demultiplexing of the optical signal from the distribution device, and inputting the demultiplexed signal from the photoelectric conversion means to provide a service through a television or stereo audio or a telephone or an ISDN terminal according to a user's selection It is divided into multiple subscriber devices.

Here, the subscriber device is configured to be separated into maximum three.

The photoelectric conversion means includes optical transmission and reception means for converting an optical signal of a multiplexed B-channel analog telephone signal and a 2B + D narrowband ISDN signal from a distribution device into an electronic signal, and 155Mb / s data from the optical transmission and reception means. Demultiplexing means for demultiplexing into 44.736 Mb / s 3-channel data, 2 Mb / s B-channel or 2B + D channel data, and 64 Kb / s maintenance / maintenance data, and 155 Mb / s input from the optical transmission / reception means A phase synchronization loop for generating a clock of 44.736 MHz and a 4 MHz clock to synchronize the demultiplexing means, maintenance and maintenance means for identifying and transmitting the status of the subscriber device to the distribution device, and the status and information of the subscriber device. Central processing means for controlling the circuits while storing, external matching means for communication signal connection between the central processing means and the subscriber device, and for the circuits to operate. It is configured to include a backup battery unit used as the auxiliary power supply is provided on the inlet portion when the premises are powered by a DC power supply means and said DC power supplying means for supplying a flow stop.

The subscriber device inputs B-channel data while synchronizing to a 4 MHz clock, and provides B-channel matching means for supplying a voice signal and current to the tip and ring terminals connected to the telephone, and inputs 2B + D channel data while synchronizing to a 4 MHz clock. 2B + D matching means to enable S-matching with narrowband ISDN terminals through ISDN terminals, and input one channel of 44.736 Mb / s of three-channel data while synchronizing to a clock of 44.736 MHz. Television / stereo audio decoding means for providing stereo audio service, user matching means for matching signals from an external remote controller and a user panel, central processing means for storing and controlling the state of the circuits, and the photoelectric conversion External matching means for connecting a communication signal between the central processing means of the means and the central processing means, and the circuits DC power supply means for supplying a current so as to be small, and a backup battery means used as an auxiliary power supply when the power supply by the DC power supply means is stopped.

In addition, the subscriber device which does not receive telephone service and ISDN service inputs one channel data of 44.736Mb / s three-channel data while being synchronized with a clock of 44.736MHz to provide a video / audio service or a stereo audio service. Decoding means, user matching means for matching signals from a remote controller and a user panel input from the outside, central processing means for controlling while storing the states of the circuits, central processing means and the central processing means of the photoelectric conversion means. And an external matching means for connecting a communication signal therebetween, and a DC power supply means for supplying a current to operate the circuits.

The separation of the three subscriber apparatuses configured as described above is possible because the data of 155Mb / s input from the optical transmission / reception means is divided into three 51Mb / s frames.

That is, since each frame is composed of 44.736 Mb / s of data, 2 Mb / s of 2B or 2B + D channel data, and 64 Kb / s of maintenance data, three independent subscriber devices can be configured. Therefore, each subscriber device configuration can be manufactured in the same configuration. To do this, each phone must use a different trunk line.

At this time, the backup battery means is configured only in the subscriber device receiving the telephone service and the ISDN service in order to allow the user to continuously receive the analog telephone service and the ISDN terminal service for a predetermined time even during a power failure.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings, and the same configuration as in the prior art will be described using the same reference numerals.

2 is an overall configuration diagram of the distributed subscriber premises device for optical CATV of the present invention.

A photoelectric conversion section 20 that photoelectrically converts and demultiplexes the optical signal from the distribution device; and a television 14A or stereo audio 15A according to a user's selection by inputting the demultiplexed signal from the photoelectric conversion section 20; Or a subscriber unit 1 (30) providing a service through the telephone (10) or the ISDN terminal (12), and the demultiplexed signal from the photoelectric changer (20) according to the user's selection. 14C) or subscriber devices 2 and 3 (40, 50) which provide services via stereo audio 15B, 15C.

The photoelectric conversion unit 20 is installed in the indoor lead-in unit, each subscriber device (30 to 50) is installed in a separate room of the indoor and transmit and receive signals through the cables 1, 2 and 3.

User-selected inputs to the televisions 14A to 14C and stereo audio 15A to 15C are made by the remote controllers 7A to 7C or the user panels 8A to 8C.

The configuration of the photoelectric conversion unit 20 in FIG. 2 is the same as that of FIG. 3.

An optical transmitter / receiver 1 for converting an optical signal of a multiplexed B-channel analog telephone signal and a 2B + D narrowband ISDN signal from a distribution device into an electronic signal, and 155 Mb / s data from the optical transmitter / receiver 1 A demultiplexer (2) for input and demultiplexing into 3 channel data of 44.736 Mb / s, B channel or 2B + D channel data of 2 Mb / s, and maintenance / repair data of 64 Kb / s, and the optical transmitter / receiver (1) Check and distribute the state of the phase synchronization loop 3 and the subscriber apparatuses 30 to 50 that generate 44.736 MHz and 4 MHz clocks from the 155 Mb / s clock inputted from A maintenance / maintenance unit 4 for transmitting to the device, a central processing unit 5A for controlling the circuits while storing the state and information of the subscriber devices 30 to 50, the central processing unit 5A and the subscriber device 1; And an external matching section 25 for communication signal connection between 2 and 3 (30-50), A DC power supply 16A for supplying current and a backup battery 17A used as an auxiliary power source when the power supply by the DC power supply 16A is stopped are configured.

In FIG. 2, the configuration of subscriber device 1 30 is the same as that of FIG. This will be described together with reference to FIG.

B-channel matching for supplying voice signals and current to the tip and ring terminals connected to the telephone by inputting B-channel data generated by the demultiplexer 2 while synchronizing to a 4 MHz clock generated by the phase-locked loop 3. The narrowband ISDN is input through the ISDN terminal 12 by inputting the 2B + D channel data generated by the demultiplexer 2 while being synchronized with the clock of 4 MHz generated by the phase-locked loop 3 and the unit 9. 2B + D channel matching unit 11 to enable S matching with the terminal and 44.736Mb / s generated by the demultiplexer 2 while synchronizing to a clock of 44.736MHz generated by the phase-locked loop 3. TV / stereo audio decoder 13A for inputting one channel data DS3-1 of the three-channel data DS3-1 to DS3-3 to provide a video / audio service or a stereo audio service, and an external input. Use to match signal by remote control and user panel 6A, a central processing unit 5B for storing and controlling the states of the circuits, and a communication signal connection between the central processing unit 5A of the photoelectric conversion unit 20 and the central processing unit 5B. An external matching unit 35, a DC power supply unit 16B for supplying a current to operate the circuits, and a backup battery unit 17B used as an auxiliary power source when the power supply by the DC power supply unit 16B is stopped. It is configured to include).

In FIG. 2, subscriber devices 2 and 3 (40, 50) are shown in FIG. This will be described together with reference to FIG.

One channel data (subscriber) of 44.736 Mb / s of three-channel data DS3-1 to DS3-3 generated by the demultiplexer 2 while being synchronized with a clock of 44.736 MHz generated by the phase-locked loop 3. The device 2 inputs DS3-2, the subscriber device 3 inputs DS3-3), and the TV / stereo audio decoder 13B for providing a video / audio service or a stereo audio service, and an external remote controller and a user panel. Communication between a user matching section 6B for matching signals, a central processing section 5C for storing and controlling the states of the circuits, and a central processing section 5A of the photoelectric conversion section 20 and the central processing section 5C. And an external matching unit 45 for signal connection, and a DC power supply unit 16C for supplying current for the circuits to operate.

In the above configuration, the subscriber devices 2 and 3 may be configured in the same configuration as the subscriber device 1. This is because the data of 155 Mb / s transmitted from the distribution device is composed of three 51 Mb / s frames.

The operation of the present invention is almost the same except for the operation of the external matching units 25, 35, 45, which make a communication signal connection between the photoelectric conversion section 20 and the subscriber apparatuses 30-50.

A rough description is as follows.

The three-channel data demultiplexed by the demultiplexer 2 of the photoelectric conversion section 20 is input to the television / stereo audio decoders 13A to 13C of each subscriber device 30 to 50. The B channel data and the 2B + D channel data are respectively input to the B channel data matching unit 9 and the 2B + D channel matching unit 11 of the subscriber device 1 (30). At this time, the television / stereo audio decoders 13A to 13C, the B-channel data matching unit 9 and the 2B + D channel data matching unit 11 of the subscriber device 1 (30) generate a 4 MHz photoelectric conversion unit ( Synchronized by the phase-locked loop 3 of 20, the television / stereo audio decoders 13A-13C are synchronized by the phase-locked loop 3 of the photoelectric conversion section 20 generating 44.736 MHz. The communication signal connection between the photoelectric conversion section 20 and the central processing sections 5A to 5C of each of the subscriber apparatuses 30 to 50 is performed through the external matching sections 25, 35 and 45 respectively configured.

The user matching units 6A and 6B configured in each of the subscriber devices 30 to 50 input the selection signal through the remote controllers 7A to 7C and the user panels 8A to 8C to provide the television / stereo audio decoders 13A to 50C. The signals input to 13C are output to the televisions 14A to 14C and the stereo audio 15A to 15C.

Then, through the ISDN terminal 12 for S-matching the signal generated by the 2B + D channel matching unit 11 configured in the subscriber device 1 (30), the service is received through the ISDN terminal, and the B-channel matching unit The telephone service is received by the signal generated in (9).

On the other hand, the backup battery units 17A and 17B are separately configured in the photoelectric conversion unit 20 and the subscriber device 1 30, thereby improving the battery backup capability.

Hereinafter, the operation of the maintenance / repair unit 4 which is connected to the central processing unit 5A of the photoelectric conversion unit 20 and checks the state of the subscriber device is the same as before.

As described above, according to the present invention, up to three subscribers can simultaneously receive CATV broadcasting or stereo audio service at a separate location away from each other, and by distributing the backup current supply unit, the backup time of the backup battery can be increased and the size of the backup battery can be reduced. The effect can be obtained, thereby achieving the effect of miniaturization and weight reduction in manufacturing the subscriber device.

Claims (4)

11. A method of constructing a subscriber premises for an optical cable television that receives various services through an optical subscriber network, comprising: photoelectric conversion means for photoelectric conversion and demultiplexing an optical signal from a distribution device; Inputting the demultiplexed signal from the photoelectric conversion means and separating the signal into a plurality of subscriber devices independently provided with a service through a television or stereo audio or a telephone or an ISDN terminal according to a user's selection Pure subscriber home devices. 2. The apparatus of claim 1, wherein the photoelectric conversion means comprises: optical transmission / reception means for converting an optical signal of a multiplexed B-channel analog telephone signal and a 2B + D narrowband ISDN signal from a distribution device into an electronic signal; Demultiplexing means for inputting 155 Mb / s data from the optical transmission and reception means to demultiplex into 44.736 Mb / s 3-channel data, 2 Mb / s B-channel or 2B + D channel data, and 64 Kb / s maintenance / maintenance data; ; A phase synchronizing loop for generating 44.736 MHz and 4 MHz clocks from the 155 Mb / s clock inputted from the optical transmitting and receiving means to synchronize the demultiplexing means; Maintenance / maintenance means for identifying and transmitting the status of the subscriber device to the distribution device; Central processing means for controlling the circuits while storing state and information of a subscriber device; external matching means for communication signal connection between the central processing means and the subscriber device; An optical cable comprising a DC power supply means for supplying a current to operate the circuits and a backup battery means used as an auxiliary power supply when the power supply by the DC power supply means is stopped. Distributed subscriber premises equipment for television. 2. The apparatus of claim 1, wherein the subscriber device comprises: B channel matching means for inputting B channel data while synchronizing to a clock of 4 MHz to supply a voice signal and current to a tip and ring terminal connected to the telephone; 2B + D channel matching means for inputting 2B + D channel data while being synchronized to a 4 MHz clock to allow S matching with a narrowband ISDN terminal through an ISDN terminal; Television / stereo audio decoding means for inputting one channel of 44.736 Mb / s of three-channel data while being synchronized with a clock of 44.736 MHz to provide a video / audio service or a stereo audio service; User matching means for matching signals received from an external remote controller with a user panel; Central processing means for controlling and storing a state of said circuits; An external matching means for connecting a communication signal between said central processing means and said central processing means of said photoelectric conversion means; Distributed subscriber premises for an optical cable television, comprising: a DC power supply means for supplying a current to operate the circuits; and a backup battery means used as an auxiliary power supply when the power supply by the DC power supply means is stopped. Device. 2. The apparatus of claim 1, wherein the subscriber device comprises a television / stereo audio decoding means for providing video / audio service or stereo audio service by inputting one channel data of three channel data of 44.736 Mb / s while being synchronized with a clock of 44.736 MHz. ; User matching means for matching signals received from an external remote controller with a user panel; Central processing means for controlling and storing a state of said circuits; An external matching means for connecting a communication signal between said central processing means and said central processing means of said photoelectric conversion means; And a direct current power supply means for supplying a current to operate the circuits.