JPH07154708A - Video signal receiver - Google Patents

Abstract

PURPOSE:To eliminate necessity for a coaxial cable when receiving any new video signals and to enable the use of a reception system 1 by providing a video signal output device inside a broadcasting receiver, selecting the desired video signal while using this device, and transmitting it to a television receiver after the output is modulated. CONSTITUTION:In the case of newly receiving the broadcasting of satellite broadcasting CS or CATV to be individually received at home when the video signals receiving at present are VHF or UHF broadcasting, for example, the video signal output device is provided corresponding to these kinds of broadcasting. Namely, a satellite broadcasting receiver 21 of the video signal output device, for example, is operated as a CS tuner, and the CS broadcasting received by an antenna is outputted as video signals. Therefore, the video signal receiver is composed of a modulator 22 for modulating the frequency of the idle channel of a UHF band and a mixer 24 for mixing the output of an amplifier 23 for VHF, UHF or BS broadcasting under receiving at present with the modulated output signal, and the signals are transmitted to the receivers of each room by using a distributor 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal receiving apparatus suitable for receiving satellite broadcasting (BS), communication broadcasting (CS) and the like.

[0002]

2. Description of the Related Art In recent years, when receiving CS broadcasting which has become possible for individual households to receive individually, a satellite (CS) antenna 32 is installed as shown in FIG. A coaxial cable dedicated to CS broadcasting is laid up to the satellite broadcasting receiver 36 corresponding to the CS tuner connected to the receiver 38, and the video output of the CS tuner is connected to the video input terminal of the television receiver 38 for viewing.

A satellite (CS) antenna 32 is provided in each room.
In order to send the signal from the CS-IF signal cannot be sent in the conventional BS broadcast receiving system due to the limitation of the transmission characteristics of each device, each system such as an amplifier, a distributor, an antenna outlet, and a coaxial cable is used. All devices are compatible with CS broadcasting. Where 31
Is a satellite (BS) antenna, 33 is a UV / FM antenna,
Reference numeral 34 is an amplifier, and 35 is a distributor.

[0004]

When a new cable dedicated to CS broadcasting is laid, the frequencies of the CS-IF signals of the two satellites are overlapped in order to be able to view both of the two satellite broadcasts. , If two coaxial cables are laid up to the CS tuner, or if a coaxial changeover switch is inserted in the middle, one coaxial cable must be newly laid. In addition, if you replace all the receiving systems with CS broadcasting compatible devices and distribute to each room, BS
-Since the frequencies of the IF signal and CS-IF signal partially overlap, you must raise either JC-SAT or SCC by 180MHz with a channel converter so that the BS-IF signal and CS-IF signal do not overlap. However, even with that method, since there is no choice but to put the coaxial switch in the middle and send one by one, after all, it is not possible to send all broadcasts of VHF, UHF, BS, CS simultaneously with one coaxial cable. One coaxial cable must be laid in each. From the above, there is a problem that a considerable equipment cost is required to construct a receiving system capable of viewing all broadcasts.

Even if a coaxial cable dedicated to CS broadcasting is newly installed or only one of JC-SAT and SCC is to be received, CS broadcasting can be performed only by a television receiver equipped with a CS tuner. I can't watch. Therefore, in order to watch CS broadcasts on a plurality of television receivers, there arises a problem that CS tuners must be prepared for the number of TV receivers.

An object of the present invention is to solve the above problems, and an object thereof is to provide a video signal receiving apparatus which requires a low equipment cost.

[0007]

DISCLOSURE OF THE INVENTION The present invention provides a broadcast signal receiving apparatus including a video signal output apparatus including a satellite broadcast receiver or a CATV terminal, a modulator thereof and a control signal receiving apparatus, and a control signal transmission. An apparatus and a television receiver are provided, and a desired video signal is selected from the video signal output device in the broadcast receiving device by the signal from the control signal transmitting device, and the output is modulated and then sent to the television receiver. It was done.

The present invention is also characterized in that a distributor is provided in the broadcast receiving apparatus, and the signal modulated by the modulator is distributed to a plurality of television receivers and sent to the television receivers.

Further, the present invention is characterized in that the video signal currently received and the signal after the video signal to be newly received are modulated by the mixer and sent to the television receiver.

Furthermore, the present invention comprises a plurality of video signal output devices, modulators thereof, and corresponding control signal receiving devices, and a signal from the control signal transmitting device is desired by the plurality of video signal outputting devices. The video signal of is selected.

[0011]

If the video signal receiving device of the present invention is adopted, the conventional receiving system can be used as it is. Therefore, when trying to receive a new video signal, it is not necessary to lay a new coaxial cable and the facility cost is reduced. Minimal. Furthermore, 1
The image of the video signal output device of one unit can be viewed on the television receiver in any room. In the future, for example, when the number of satellites for CS broadcasting increases, a CS tuner or a CATV home terminal when joining a city type CATV can be added at the position of the video signal output device.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

Video signals currently being received are VHF and UH.
In the case of F broadcasting, video signals to be newly received include BS broadcasting, CS broadcasting, CATV, and video packages. Therefore, the video signal output device is
BS tuner for broadcasting, C for CS broadcasting
It may be an S tuner, a CATV home terminal in the case of CATV, a video tape recorder, or a laser disk player in the case of a video package.

As an embodiment of the present invention, the video signal currently being received is VHF, UHF, BS broadcast, and the video signal to be newly received is CS broadcast. In the figure, numeral 11 is a satellite (BS) antenna, numeral 12 is a newly provided satellite (CS) antenna, numeral 13 is a VHF, UHF, FM antenna, and numeral 14 is a broadcast receiving apparatus, which is configured as shown in FIG. Reference numeral 15 is a control signal transmitting device, 16 is a television receiver, and 17 is an antenna outlet.

In FIG. 2, the satellite broadcast receiver 21 as a video signal output device serves as a CS tuner and outputs the CS broadcast received by the satellite (CS) antenna 12 as a video signal. 22 is a modulator that modulates the video signal to the frequency of a free channel in the UHF band such as ch13; 24 is a mixer that mixes the output of the amplifier 23 of the currently received VHF, UHF, BS broadcast with the modulated output signal;
28 is a distributor that distributes the output signal of the mixer 24 and sends it to each room (television receiver). A television receiver 16 and a control signal transmitter 15 are installed in each room as shown in FIG.
If the UHF channel 13 is selected on the television receiver 16, then FIG.
The video of the CS tuner of the satellite broadcast receiver 21 can be viewed. Channel of satellite receiver 21 (S
1, J1, etc.) can be selected by the control signal transmitted from the control signal transmitting device 15 installed in the television receiver 16 of FIG. 1 through the coaxial cable to the control signal receiving device 25 of FIG. it can. If the satellite broadcast receiver 21 is a video tape recorder or a laser disk player, control such as fast-forwarding and rewinding can be performed by sending a control signal from the control signal transmitter 15 of FIG.

Also, when it is desired to add the second and third video signal output devices, the broadcast receiving device 1 as shown in FIG.
If an additional satellite broadcast receiver 26 and an additional modulator 27 are installed in the channel No. 4 and modulated to the frequency of another vacant channel such as ch15 and mixed by the mixer 24, the television receiver 16 of FIG. UHF channel ch13 and ch1
By selecting channel 5, a video signal output device such as a CS tuner or a video tape recorder can be selected.

As described above, in this embodiment, the video signal output device to be additionally installed is installed in the broadcast receiving device 14, modulated, and supplied to the television receiver through the existing coaxial cable, whereby a new coaxial cable is laid. There is no need to do so, and the system can be constructed at low cost. Further, if the number of video signal output devices is further increased to two or three, the effect is further enhanced.

[0018]

By adopting the video signal receiving apparatus of the present invention, the conventional receiving system for BS broadcasting, for example, can be used as it is.
There is no need to install a new coaxial cable for broadcasting, and equipment costs are minimal. In addition, a single CS tuner or video tape recorder can be viewed on any television set in any room. If the number of satellites for CS broadcasting increases in the future, a CS tuner or a CATV home terminal can be added to the location of the video signal output device when joining a city type CATV.

[Brief description of drawings]

FIG. 1 is a block diagram of wiring at home using a video signal receiving device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a video signal receiving device according to an embodiment of the present invention.

FIG. 3 is a block diagram of conventional wiring at home.

[Explanation of symbols]

 11 Satellite Antenna A 12 Satellite Antenna B 13 UV / FM Antenna 14 Broadcast Receiver 15 Control Signal Transmitter 16 Television 17 Antenna Outlet 21 Satellite Receiver or CATV Terminal 22 Modulator 23 UV / BS Amplifier or Power Supply 24 UV, BS / CS mixer 25 Control signal receiver 26 Expansion satellite broadcast receiver or CATV terminal 27 Expansion modulator 28 Distributor

Claims (4)

[Claims] 1. A broadcast receiving device comprising a video signal output device, a modulator thereof and a control signal receiving device, a control signal transmitting device and a television receiver, and a broadcast receiving device using a signal from the control signal transmitting device. A video signal receiving device, characterized in that a desired video signal is selected from the video signal output device, the output is modulated, and then the video signal is sent to a television receiver. 2. A distributor is provided in the broadcast receiving device,
The video signal receiving apparatus according to claim 1, wherein the signal modulated by the modulator is distributed to a plurality of television receivers. 3. A video signal which is currently being received and a signal obtained by modulating a video signal to be newly received are mixed by a mixer and sent to a television receiver. Video signal receiver. 4. A plurality of video signal output devices, a modulator thereof, and a control signal reception device corresponding thereto are provided, and a desired video signal is selected from the plurality of video signal output devices by a signal from the control signal transmission device. The video signal receiving device according to claim 1, wherein