JP2001251615A - Optical terminator for distributing video - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for a set-top box for every television receiver. SOLUTION: In a service system an integrated service of a video distribution service, a data communication service and a phone service is provided through an optical fiber, the optical terminator for distributing video image installed in a house being distribution destination has a video ONU 27 that converts a video signal of a plurality of channels provided through the optical fiber into an electric signal and tuner means 32-37 that select one channel or more from the video signal converted by the video ONU 27 and transmit the video signal of the selected channel(s) to one image device or more installed in the house.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an optical terminal for video distribution which provides an integrated service of video, data communication and telephone services.

[0002]

2. Description of the Related Art First, a conventional optical terminal device for providing an integrated service of video, data communication, and telephone services will be described. FIG. 7 shows a configuration block diagram of a conventional optical terminal device. The optical fiber drawn into the house from outside is connected to the optical fiber input / output terminal 1 via a connector.
The telephone signal, the data communication signal, and the video signal are input in a multiplexed form to a communication optical transceiver (Optical Network Unit, hereinafter referred to as ONU) 7 through the optical fiber 2 in the housing.

[0003] Data communication signals and telephone signals are used for communication O.
The light / electrical conversion is performed by a light receiver (not shown) in the NU 7. The telephone signal converted into the electric signal is transmitted to the communication ONU7.
The time compression multiplex transmission process is performed by an LSI (not shown) for two-way communication, and is transmitted to the telephone input / output terminal 3 via the telephone signal processing LSI. The data communication signal converted into an electric signal is sent to a bus once through a data communication processing LSI (not shown) in the communication ONU 7 and is then sent to a microprocessor (hereinafter referred to as an MPU).
Under the control of 10, the signal is sent from the bus to the input / output terminal 4.

On the other hand, the video signal is reflected at the entrance of the communication ONU 7 and is delivered to the video ONU 8. The video ONU 8 converts a frequency-multiplexed video signal into an electric signal, and converts the converted video signal to a signal level enough to provide a video to one television device (hereinafter, referred to as a TV device) in the house. To amplify. This video signal is a multiplexed channel signal in which video signals of a plurality of channels are multiplexed, and is sent to the tuner 13.

[0005] The MPU 10 is an infrared remote controller (not shown).
Is received via the remote control interface unit 5 and the user IF control unit 9 to recognize the channel selected by the user. Tuner 13 is M
According to the control of the PU 10, only the video signal of the selected channel is cut out from the multi-channel signal. RF (Radio Freque
ncy) The demodulator 14 temporarily returns the video signal of the selected channel to a baseband signal. An on-screen display (hereinafter referred to as OSD) circuit 15 combines the video signal returned to the baseband signal with the OSD information stored in the memory 11. The synthesized video signal is N
The signal is converted into an NTSC signal that can be received by the analog TV device by the TSC modulator 16 and transmitted from the video signal input / output terminal 6. By providing a distributor after the video signal input / output terminal 6, the video signal of the same channel can be distributed to a plurality of TV devices.

[0006]

When a conventional optical termination device is used, a channel is selected by a set-top box for a video signal, and a video is provided to the TV device. In some cases, there is a problem that one set-top box must be installed for each TV device. In addition,
In FIG. 7, the remote controller interface unit 5, video signal input / output terminal 6, user IF control unit 9, MPU 10, memory 11, tuner 13, RF demodulator 14, OSD circuit 1
5 and NTSC modulator 16 correspond to the set top box. In addition, it is necessary to separately lay UTP (Unshielded Twisted Pair) cable wiring for connection with terminal equipment installed in a place different from the optical terminal equipment in the house, for example, a computer, which leads to an increase in cost when introducing services. There was a problem. The present invention has been made to solve the above problems, and has as its object to provide an optical terminal device for video distribution that does not require a set-top box for each TV device. It is another object of the present invention to provide a video distribution optical terminating device that can reduce the cost of introducing a service.

[0007]

According to the present invention, there is provided an optical termination device for video distribution, wherein the optical termination device for video distribution installed in the destination home is a device for converting video signals of a plurality of channels provided by optical fibers into electric signals. First optical line termination means (27)
And a tuner for selecting one or more channels from the video signal converted by the first optical line terminating means and sending out the video signal of the selected channel to one or more image equipment installed in the house. Means (32 to 37). In addition, one configuration example of the optical terminal device for video distribution of the present invention converts a data communication signal received from an optical fiber into an electric signal, and converts a data communication signal transmitted from a terminal device installed in a house. The second optical line terminating means (2) converts the signal to an optical signal and sends the signal to an optical fiber.
6) and wireless interface means (77) for wirelessly exchanging data communication signals between the second optical line termination means and the terminal equipment. Further, as one configuration example of the optical terminal device for video distribution of the present invention,
The wireless interface means receives a control signal wirelessly transmitted from the remote control device, and the control means (29) provided in the video distribution optical termination device causes the tuner means to select a channel designated by the control signal. It is. One example of the configuration of the optical terminal device for video distribution according to the present invention is a means for multiplexing a data communication signal, a telephone signal, and a control signal from a remote control device, and connecting the wireless interface means with a wireless interface means by a telephone line. (22,50-62,70-7
6, 79-83).

[0008]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an optical termination device for video distribution according to an embodiment of the present invention. The video signal, the data communication signal and the telephone signal are transmitted through the optical fiber in the form of wavelength multiplexing with the wavelength of the video signal being 1.55 μm and the data communication signal and the telephone signal being 1.3 μm.

An optical fiber drawn into the house from outside is connected to an optical fiber input / output terminal 21 via a connector. Optical transceiver for communication (Optical Network Unit,
A wavelength selection filter (not shown) for separating a data communication signal, a telephone signal, and a video signal from each other is provided at an entrance of the ONU 26. Among various data input from the fiber input terminal 21 to the optical fiber 25 inside the housing, a data communication signal and a telephone signal are taken into the communication ONU 26 by the wavelength selection filter,
The video signal is delivered to the video ONU 27.

The data communication signal and the telephone signal are ON for communication.
The light / electrical conversion is performed by a light receiver (not shown) in the U26. The telephone signal converted into the electric signal is used for communication ONU2.
A time compression multiplex transmission process is performed by an LSI (not shown) for bidirectional communication in 6, and the data is transmitted directly to the data communication / telephone common interface unit 22 via the telephone signal processing LSI.

The data communication signal converted into the electric signal is used as a data communication processing LSI in the communication ONU 26.
(Not shown), and once sent out to the bus, under the control of a microprocessor (hereinafter referred to as MPU) 29, and from the bus, the data communication / telephone common interface unit 2
2 is sent.

The function of the data communication / telephone common interface unit 22 is to realize that a telephone signal and a data communication signal are multiplexed on a frequency and transmitted to one cable. Technologies for realizing the function of the data communication / telephone common interface unit 22 include HomePNA
(Home Phoneline Network Alliance) and xDSL (xD
Digital Subscriber Line), and various types of cables for transmitting signals, such as a pair line, are available.

Data communication transmitted via a cable
The multiplex signal of the telephone is transmitted to the home-installed interface device 2
At 3, the signal is demodulated into the original data communication signal and the telephone signal. The data communication signal is transmitted via a wireless interface, and the telephone signal is transmitted via a paired interface.

FIG. 2 is a block diagram showing the internal configuration of the data communication / telephone common interface unit 22. First,
The flow of transmission signals from the communication ONU 26 and the video ONU 27 to the data communication / telephone common interface unit 22 will be described. In the case of transmission, the telephone signal is transmitted to the communication ONU
6 is input to the telephone signal input / output unit 50 and sent directly to the multiplexer 59.

The data communication signal is input to the data signal input / output unit 51 from the bus. This data communication signal is transmitted to the home-installed interface device 23 so as to be transmitted to a general purpose serial interface (General Purpose Serial Interface).
After passing through an interface (hereinafter referred to as GPSI) 54, the signal is encoded by an encoder 57, modulated by a transmitter 58, and sent to a multiplexer 59.

At this time, since the frequency spectrum of the data communication signal is shifted to a higher frequency side than the telephone signal by the transmitter 58 as shown in FIG. 3, the data communication signal does not interfere even if it is transmitted on the same medium. The telephone signal and the data communication signal multiplexed by the multiplexer 59 are transmitted to the RJ-11 connector 61.
The data is sent to the home-installed interface device 23.

FIG. 4 shows a home-installed interface device 2.
FIG. 3 is a block diagram showing an internal configuration of the third embodiment. The signal received from the RJ-11 connector 70 is split into two by the splitter 71. From the duplexer 71, a low-pass filter (Low Pass F
Of the signals input to the ilter (hereinafter referred to as LPF) 72, the telephone signal is separated from the data communication signal by the LPF 72, sent to the pair line from the telephone signal input / output terminal 73, and connected to the pair line. (Not shown).

On the other hand, the data communication signal is demodulated by the receiver 74, decoded by the decoder 75, and returned to the original signal. The demodulated data communication signal is GPSI7
After passing through 6, the signal is modulated by the wireless interface unit 77 and wirelessly transmitted from the wireless antenna 78 to the house. The radio wave transmitted from the wireless antenna 78 is received and demodulated by a communication unit (not shown) in the house, and a data communication signal is extracted. This data communication signal is sent to a terminal device such as a computer connected to the communication means.

The wireless interface unit 77 has a MAC
(Media Access Control) unit 77a and a wireless modem / transmitter / receiver 77b. The MAC unit 77a performs control to avoid signal collision when accessed from a plurality of terminals.

The wireless modem / transmitter / receiver 77b is a GPSI
It modulates the data communication signal passed from 76 and outputs it to the wireless antenna 78, or demodulates the radio wave received by the wireless antenna 78 and extracts the data communication signal. The configuration of the wireless interface unit 77 is a wireless LAN or B
There is a similar effect in Bluetooth.

Conversely, the home-installed interface device 2
3 to the data communication / telephone common interface unit 22 are as follows. A telephone signal from a telephone (not shown) is transmitted from a telephone signal input / output terminal 73 to a multiplexer 8.
Sent directly to 1.

A data communication signal wirelessly transmitted by the communication means from a terminal device such as a computer is received as a radio wave by a wireless antenna 78 and demodulated by a wireless modem / transmitter / receiver 77b of a wireless interface unit 77. The demodulated data communication signal is encoded by an encoder 79 through a GPSI 76, modulated by a transmitter 80, and sent to a multiplexer 81 for transmission to the data communication / telephone common interface unit 22. As in the case of the data communication / telephone common interface unit 22, the frequency spectrum of the data communication signal is shifted by the transmitter 80 to a higher frequency side than the telephone signal.

The major difference from the data communication / telephone common interface section 22 is that a channel selection signal from a remote control device (not shown), a control signal for an optical termination device, and the like are added. This signal can be received by a wireless antenna 78 used for data communication, which contributes to simplification of the overall apparatus configuration and cost reduction.

The control signal from the remote controller is set to be completely different from the carrier frequency used for data communication, and the radio wave received by the radio antenna 78 is transmitted to the radio modulation / demodulation / transmission / reception
b, after being demodulated by b.
er, hereinafter referred to as BPF) 83 to separate from the data signal.

The up-converter 82 overlaps the frequency of the control signal with the telephone signal and the data communication signal in order to transmit the control signal such as the channel selection signal separated by the BPF 83 to the data communication / telephone common interface unit 22 as a medium. Is converted to a frequency band not to be used (FIG. 3). The control signal multiplexed with the telephone signal and the data communication signal by the multiplexer 81 is sent to the data communication / telephone common interface unit 22 through the medium.

The signal sent to the data communication / telephone common interface section 22 in FIG. The telephone signal is separated from the data communication signal and the control signal by the LPF 53 and sent to the communication ONU 26 from the telephone signal input / output unit 50.

The data communication signal is demodulated by the receiver 56, decoded by the decoder 55, and returned to the original signal. This data communication signal is sent from the data signal input / output unit 51 to the bus through the GPSI 54 and
9 is transmitted from the bus to the communication ONU 26. The data communication signal and the telephone signal are converted into an optical signal by electrical / optical conversion in the communication ONU 26, sent to the optical fiber 25, and taken out through the optical fiber input / output terminal 21 to the outside. Sent out.

On the other hand, the control signal from the remote controller is B
The signal is separated from the telephone signal and the data communication signal by the PF 62, returned to the original frequency by the down converter 63, and sent from the channel selection signal input / output unit 52 to the user IF control unit 28 in FIG. In the present embodiment, the control signal such as a channel selection signal from the remote control device is transmitted to the optical terminal device side by frequency multiplexing with the data communication signal and the telephone signal. Multiple access method (Code Division Multiple Access, CDM
A) or an echo canceller method may be used.

Next, the flow of a video signal according to the present embodiment will be described. 1.55 wavelength handed over to video ONU 27
The optical signal of μm is subjected to light / electric conversion by a light receiver (not shown) in the video ONU 27. In addition, video ON
The U27 amplifies the video signal converted into the electric signal to a signal strength that can provide a video to a plurality of television devices (hereinafter, referred to as TV devices) in the house. This video signal is a multiplexed channel signal in which video signals of a plurality of channels are multiplexed, and is sent to the distributor 32.

Tuners 33 (33-1 to 33-n), R
F demodulator 34 (34-1 to 34-n), on-screen display (hereinafter referred to as OSD) circuit 35 (3
5-1 to 35-n) and the NTSC modulator 36 (36-1)
To 36-n) have a module configuration, and are configured so that a plurality of tuner circuit modules having the same configuration can be mounted. The distributor 32 branches the video signal output from the video ONU 27 into n in accordance with the number n of the tuner circuit modules.

When the MPU 29 receives the channel selection signal from the remote controller via the user IF control unit 28, the MPU 29 recognizes the specific channel selected by the user, and selects the specific channel by the tuner 33 (33-33). 1-3
3-n) is controlled. Tuner 33 (33-1 to 33-33)
In n), under the control of the MPU 29, only the video signal of the specific channel is cut out from the multi-channel signal. At this time, the tuners to be controlled are tuners 33-1 to 33-1.
33-n, the tuner in the tuner circuit module corresponding to the user who operates the remote control device.

The RF demodulator 34 (34-1 to 34-n)
Returns the video signal of the channel selected by the tuner 33 (33-1 to 33-n) to a baseband signal once. The OSD circuits 35 (35-1 to 35-n) combine the video signal returned to the baseband signal with the OSD information stored in the memory 30. The OSD information is read by the MPU 29, and the read OSD information is
It is passed to the D circuit 35 (35-1 to 35-n).

The video signal synthesized with the OSD information is NT
The signal is converted into an RF signal (NTSC signal) receivable by the analog TV device by the SC modulator 36 (36-1 to 36-n). NTSC modulator 3 for each tuner circuit module
6 (36-1 to 36-n) are frequency-multiplexed by the multiplexer 37 and sent to the TV device from the video signal input / output terminal 24 via a coaxial cable.

Therefore, what is sent to the TV device is a signal obtained by frequency-multiplexing a plurality of video channel signals.
In order to frequency multiplex a plurality of channel signals on the same coaxial cable and to enable reception by a normal TV device, the NTSC modulator 36 (36-36) of each tuner circuit module is used.
1 to 36-n) have a function of transferring the selected channel signal to different carrier frequencies.

Next, the operation of the remote controller will be described with reference to FIG. The remote control device is provided with operation keys for operating a TV, a video tape recorder (hereinafter, referred to as a VTR), and an optical terminal device for video distribution. First, the control means of the remote control device waits for selection of an operation key (step 101).

When the TV selection key is pressed (step 1
02), signals to the TV device in front of them (for example, a control signal for channel change, a control signal for TV / VTR switching, a control signal for volume control, etc.)
Therefore, the control means drives an infrared (hereinafter referred to as IR) circuit of the remote control device (step 103), and transmits a desired control signal to the TV device by infrared (step 104).

When the VTR selection key is pressed (YES in step 105), it is assumed that a control signal for recording reservation setting or immediate recording setting is sent to the VTR in front of the user.
Therefore, the control means drives the IR circuit (Step 106) and transmits various control signals to the VTR by infrared rays (Step 107).

In any of the settings for immediate recording (recording of the channel watched on the TV screen, recording of the counterprogram) and recording reservation setting, the selected channel and the time at which this channel should be selected are used for video distribution. It is also necessary to notify the optical termination device. Therefore, the control means of the remote control device drives the wireless circuit after various settings of the VTR (step 108) and distributes a control signal indicating a channel to be recorded and a recording time (recording start time, recording end time, etc.) to the video. Wireless transmission to the optical termination device (step 109).

If the optical terminal selecting key is pressed (YES in step 110), the optical terminal for video distribution is installed not in front of the eyes but in a place in the house where communication by radio signals is possible. It is highly likely that it is not installed before or in the same room. Accordingly, the control means of the remote control device drives the wireless circuit (step 111), and wirelessly transmits the channel selection signal to the optical terminal for video distribution (step 112).

Next, the operation of the video distribution optical termination device when a control signal is received from the remote control device will be described with reference to FIG. As described above, the MPU 29 receives the control signal from the remote control device via the user IF control unit 28. First, the MPU 29 determines whether or not the control signal from the remote control device is a TV channel selection signal (step 201).

In the case of a TV channel selection signal, MP
U29 determines whether the channel requested by this channel selection signal has already been provided for somewhere (step 202). When the requested channel is selected and processed by any of the n tuner circuit modules of the optical terminal device and sent out from the video signal input / output terminal 24 to the coaxial cable, the MPU 29
, And sends the OSD information to the OSD circuit 35 of the tuner circuit module corresponding to the user who has requested the specific channel by the remote controller. As a result, the TV that the user who has requested the specific channel is watching
The contents of the OSD information, that is, a message that "the requested channel can be viewed on the ## channel" is displayed on the channel screen of the device (step 203).

The user who sees this message can watch a desired program by operating the remote control device and causing the TV device to select the designated channel. When the channel requested by the channel selection signal is an unprovided channel, the MPU 29 determines whether or not there is an unused tuner circuit module among the n tuner circuit modules of the optical terminal device (step 204). .

If there is an unused tuner circuit module, the MPU 29 controls the tuners 33 (33-1 to 33-n) in this unused module to select the channel requested by the channel selection signal. (Step 2
05). The video channel signal selected by the tuner 33 (33-1 to 33-n) is transmitted to the NTSC within the same module.
The modulator 36 (36-1 to 36-n) replaces the carrier frequency of the TV free channel (step 206).

Then, the MPU 29 transmits the transfer destination TV.
The OSD information indicating the channel number is read from the memory 30, and the OSD information is read from the OS of the tuner circuit module corresponding to the user who has requested the specific channel by the remote controller.
Send to D circuit 35. Thereby, the OSD is displayed on the channel screen of the TV device being watched by the user who has requested the specific channel.
The content of the information, that is, a message that "the requested channel can be viewed on the ## channel" is displayed (step 203).

If there is no unused tuner circuit module in step 204, that is, if all the modules are used, the MPU 29 reads predetermined OSD information from the memory 30 and transmits this OSD information to the specific channel by the remote controller. Is sent to the OSD circuit 35 of the tuner circuit module corresponding to the requesting user. As a result, the contents of the OSD information, that is, a message that "impossible channel request cannot be accepted" is displayed on the channel screen of the TV device being viewed by the user who has requested the specific channel (step 207).

However, the number of tuner circuit modules mounted on the optical termination device is usually set so as not to be insufficient in consideration of the number of TV devices and VTRs in the house. Is unlikely to happen. When a control signal for recording a VTR is received in step 201, the MPU 29 immediately determines whether or not recording is to be performed (step 208).

In the case of recording immediately, the MPU 29
Performs the processing of steps 202 to 207 in the same manner as when the TV channel is selected. For recording reservation, MPU
Reference numeral 29 denotes a memory for temporarily storing the information of the received control signal.
(Step 209), and when the set recording start time comes, the processing of steps 202 to 207 is performed (step 210).

[0048]

According to the present invention, a video distribution optical terminating device is constituted by the first optical line terminating means and the tuner means, so that one video distribution optical terminating device can be installed in the distribution destination home. Just by providing one or more image equipment (television set or video tape recorder) installed in the house
Since the video signal can be distributed to the television set, it is not necessary to install a set-top box for each television device as in the related art, and the cost for introducing a service can be reduced.

By providing the second optical line terminating means and the radio interface means in the video distribution optical terminating device, it is possible to wirelessly exchange data communication signals with terminal equipment installed in the house. Therefore, it is not necessary to separately lay UTP cable wiring as in the related art, and the cost at the time of introducing a service can be reduced.

Further, by receiving the control signal wirelessly transmitted from the remote control device by the wireless interface means, the wireless interface means is shared with the data communication signal, so that the simplification of the device configuration and the cost reduction are realized. be able to.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an optical termination device for video distribution according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of a data communication / telephone common interface unit of FIG. 1;

FIG. 3 is a diagram showing a frequency spectrum of each signal transmitted on a medium between the data communication / telephone common interface unit and the in-home interface device of FIG. 1;

FIG. 4 is a block diagram showing an internal configuration of the in-home interface device of FIG. 1;

FIG. 5 is a flowchart for explaining the operation of the remote control device.

FIG. 6 is a flowchart illustrating an operation of the optical terminal for video distribution when a control signal is received from a remote control device.

FIG. 7 is a block diagram showing a configuration of a conventional optical termination device.

[Explanation of symbols]

Reference numeral 21 denotes an optical fiber input / output terminal, 22 denotes a data communication / telephone common interface unit, 23 denotes a home-installed interface device, 24 denotes a video signal input / output terminal, 25 denotes an optical fiber, 26 denotes a communication ONU, and 27 denotes a video ONU. , 28
... User IF control unit, 29 ... MPU, 30 ... Memory, 3
2 ... distributor, 33-1 to 33-n ... tuner, 34-1
~ 34-n ... RF demodulator, 35-1 ~ 35-n ... OSD
Circuits, 36-1 to 36-n: NTSC modulator, 37: multiplexer, 50: telephone signal input / output unit, 51: data signal input / output unit, 52: channel selection signal input / output unit, 53: LP
F, 54 ... GPSI, 55 ... decoder, 56 ... receiver,
57: encoder, 58: transmitter, 59: multiplexer, 60
... Diplexer, 61 ... RJ-11 connector, 62 ... BPF,
63: down converter, 70: RJ-11 connector,
71: duplexer, 72: LPF, 73: telephone signal input / output terminal, 74: receiver, 75: decoder, 76: GPSI,
77: wireless interface unit, 77a: MAC unit, 7
7b: wireless modem / transmitter / receiver, 78: wireless antenna, 7
9 ... Encoder, 80 ... Transmitter, 81 ... Mux, 82 ...
Up converter, 83 ... BPF.

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04N 7/173 630 H04N 7/173 630 (72) Inventor Norio Tamaki 2-3-1 Otemachi, Chiyoda-ku, Tokyo Sun F Term (Reference) 5C025 AA23 AA25 BA01 BA18 BA25 DA05 DA10 5C056 AA05 BA02 BA10 DA01 FA02 FA03 FA05 FA08 HA01 HA14 5C064 BA01 BB03 BB10 BC06 BC14 BC20 BD01 BD08 BD09 BD16 5K101 KK02 KK18 LL11 LL

Claims (4)

[Claims] 1. A service system for integrating an image distribution service, a data communication service, and a telephone service and providing the same by an optical fiber, wherein an optical terminal device for image distribution installed in a delivery destination home is provided by the optical fiber. A first optical line terminating means for converting a video signal of a plurality of channels into an electric signal; and selecting one or more channels from the video signal converted by the first optical line terminating means. A tuner for sending a video signal of a channel to one or a plurality of image devices installed in the house. 2. The video distribution optical termination device according to claim 1, wherein the video distribution optical termination device converts a data communication signal received from the optical fiber into an electric signal and is installed in the house. A second optical line terminating means for converting a data communication signal transmitted from the terminal equipment into an optical signal and transmitting the signal to the optical fiber; and a data communication between the second optical line terminating means and the terminal equipment. An optical terminal device for video distribution, comprising: a wireless interface unit for wirelessly exchanging communication signals. 3. The video distribution optical termination device according to claim 2, wherein the wireless interface unit receives a control signal wirelessly transmitted from a remote control device, and is provided in the video distribution optical termination device. Wherein the tuner means selects a channel designated by the control signal. 4. The optical terminal for video distribution according to claim 3, wherein the signal for data communication, the telephone signal, and a control signal from a remote controller are multiplexed, and a telephone line is connected between the signal and the wireless interface means. An optical termination device for video distribution, comprising: means for connecting.