JPS62233995A - Remote control system - Google Patents

Abstract

PURPOSE:To control a picture equipment such as a VTR disposed in another room by an infrared ray transmitter without laying a long cable for transmitting a remote control signal by converting an infrared ray signal into an electric signal, superimposing the signal on a picture signal cable and transmitting the signals. CONSTITUTION:In an A room, a TV30 is disposed, and in a B room, the VTR32 is disposed. The VTR32 has a receiver main body part 40 or the like for inputting the remote control signal and supplying a prescribed control signal to the respective parts of the VTR32. A repeater 54 consists of a photodetecter 58 for receiving the infrared ray signal and photoelectrically converting and an amplifier 60. When the stop key for an infrared ray transmitter 56 is pressed down to the repeater 54, the infrared ray signal is photoelectrically converted in the repeater 54 and outputted to a mixer 52 as the electric remote control signal. The mixer 52 superimposes the remote control signal on a coaxial cable 50 on which a high frequency modulation signal from the VTR32 is mounted, in the VTR32, the remote control signal is separated in a separator 48, decoded in the receiver main body part 40 and the VTR32 is stopped and controlled.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a remote control 1-roll system, in which an infrared transmitter is used to control image equipment such as a VTR or video disc installed in a place with no visibility or in a separate room. This is related to a remote control system that can be controlled by

<Prior Art> For example, there are cases in which a VTR and a television (TV) installed in separate rooms are connected in advance through a high-frequency line, and it is desired to remotely control the VTR from the TV room using an infrared transmitter.

At this time, conventionally, as shown in FIG.
A receiving device main unit 12 is installed in the TR 10, and the VTR 10
and A where a TV 16 connected by a high frequency line 14 is placed.
The room is equipped with a repeater 18 for receiving infrared rays, the receiving device main body 12 and the repeater 18 are connected with a cable 20, and any key emitted from the infrared transmitter 22 operated in room A is connected. The infrared signal modulated with the code is photoelectrically converted by the light receiving element 24 of the middle W1 unit 18, amplified by the amplifier 26, transmitted to the VTR10 side via the cable 20, and further amplified by the amplifier 28 of the receiving device main unit 12. Afterwards, the original code is obtained by a detection/waveform shaping circuit 30, and is discriminated by a decoder 32 to output various control signals.

<Problems to be solved by the invention> However, with this conventional technology, a 100-inch long cable must be laid to transmit the remote control signal from room A to room B, which requires a lot of work. At the same time, there is a problem in that the cost is high, and there is a risk of accidents such as wire breakage due to people accidentally getting their limbs caught.

SUMMARY OF THE INVENTION An object of the present invention was to provide a remote control system that eliminates the need for laying cables, reduces labor and cost, and prevents accidents such as cables getting caught. That is its purpose.

Means for Solving Problems> FIG. 1 is a configuration diagram showing a remote control system according to the present invention, and 32 is a fii VTR installed in room B.
, 48if VTR32 internal Fa unit, 50 is from room B to A
A coaxial cable is extended to the room, 52 is a mixer, 54 is a repeater, and 56 is an infrared transmitter.The mixer 52, the repeater 54, and the infrared transmitter 56 are located in room A.

Function> When the VTR 32 is playing, high frequency modulation signals of video signals and audio signals are generated within the VTR 32.
8 and a coaxial cable 50 from Room B to Room A, and watch the video on a TV connected to the exit side of the mixer 52.
You can listen to the audio.

For example, if a user in Room A wants to stop playing the VTR 32, he or she points the infrared transmitter 56 at the repeater 54 in Room A and presses down the stop key.

The infrared transmitter 56 emits an infrared signal in which the code associated with the stop key is modulated at, for example, 50 KHz. This infrared signal is received by the repeater 54, photoelectrically converted, and then output to the mixer 52 as an electrical remote control signal.

The mixer 52 superimposes the remote control signal onto the coaxial cable 50 carrying the high frequency modulation signal from the VTR 32. The superimposed remote control signal is transmitted through the coaxial cable from room A to room B and enters the VTR 32, contrary to the high frequency modulation signal.

In the VTR 32, the remote control signal is separated by a separator 48,
Thereafter, it is decoded by the receiver main unit 40 and sent to the VTR 32.
Used to control stopping.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

As shown in FIG. 1, a TV (television receiver) 30 is installed in room A, and a VTR 32 is installed in room B. VTR3
Reference numeral 2 denotes a video amplifier 34 that amplifies the video signal obtained by a playback unit (not shown), an audio amplifier 36 that amplifies the audio signal obtained by the playback unit, and is connected to the output side of these to output the video and audio signals to the TV 30. Predetermined high frequency (about 100MHz) corresponding to the appropriate channel (ICH or 2CH)
The VTR 32 includes a high frequency modulator 38 that modulates the VTR 32, and a receiver main unit 40 that receives a remote control signal sent from the outside and supplies predetermined control signals to each part of the VTR 32.

The receiver main unit 40 includes an amplifier 42 that amplifies the remote control signal, a detection/waveform shaping circuit 44 connected to the output side of the amplifier 42 to take out the code, and a detection/waveform shaping circuit 44 connected to the output side of the detection/waveform shaping circuit 44. and a decoder 46 which discriminates the code and sends a predetermined control signal to each part of the VTR 32.

A coaxial cable 50 is connected to the output side of the high frequency modulation W38 of the VTR 32 via a separator 48, which will be described later.
It is possible to output high frequency modulation signals to the outside.

The amplifier 42 is connected to a separator 48, and receives a remote control signal separated by the separator 48 from the coaxial cable 50.

The coaxial cable 50 connected to the VTR 32 is connected from room B to room A.
It is extended to the room, and the TM is
It is connected to the antenna terminal of 01.

Therefore, by tuning TM01 to ICH or 2CH, the screen and audio of the VTR 32 can be seen and heard.

A remote control signal repeater 54 is installed in Room A.

This repeater 54 is for receiving an infrared signal emitted from an infrared transmitter 56 operated by a user in Room A and converting it into an electrical signal.

Although the details of the infrared transmitter 56 are omitted here, the infrared transmitter 56 includes a keyboard equipped with a large number of keys for operating the VTR 32,
When each key is pressed, there is a signal generation circuit that outputs a signal modulated at approximately 50 KHz with a code to distinguish the key definition, a drive circuit that amplifies this modulation signal with current, and an infrared ray that is driven by this drive circuit. It consists of an infrared light emitting diode and an infrared light emitting diode that emit a signal.

The repeater 54 consists of a light receiving element 58 that receives an infrared signal emitted from an infrared transmitter 56 and converts it photoelectrically, and an amplifier 60 connected to the output side of this light receiving element 58, and converts the infrared signal directly into an electrical signal. : has the function of changing to a remote control signal.

The output side of the repeater 54 is connected to the mixer 52 . This mixer 52 receives 100MHz from the VTR 32.
A remote control signal sent from a repeater 54 is superimposed on a coaxial cable 50 carrying a high frequency modulated signal of about 100 MHz.

Specifically, as shown in FIG. 2, the output side of the amplifier 60 is connected to the base via a resistor, and the collector is connected to the 10B power supply.
It consists of a low frequency transistor 64 whose emitter is connected to the signal line 62 of the coaxial cable 50.

When the remote control signal is output from the repeater 54, the low frequency transistor 64 is switched by the modulation frequency machine of the remote control signal and is superimposed on the coaxial cable 50 as a remote control signal having a potential of wave height +B (V).

On the other hand, the separator 48 on the VTR 32 side is connected to the coaxial cable 50.
It has a function to separate the remote control signal from the superimposed signal inside.

Specifically, as shown in FIG. 3, a low frequency transistor is constructed in which the signal line 62 of the coaxial cable 50 is connected to the base via a resistor, the collector is connected to the 10B power supply via the resistor, and the emitter is connected to the ground. It consists of 66 pieces.

The low frequency l-rangistaro 6 does not operate even if it receives a high frequency signal of about 100 MHz, but responds to a low frequency signal of 50 KHz. Therefore, only the remote control signal in the coaxial cable 50 is output from the collector of the transistor 66.

Note that the impedance matching of the mixer 52 and the separator 48 with the coaxial cable 50 may be achieved by using a matching transformer such as a balloon.

Next, the overall operation of the above embodiment will be explained.

If the user wants to stop the VTR image that he is viewing on TM01 in room A, he points the infrared transmitter 56 at the repeater 54 and presses the stop key on the VTR 32.

Infrared speed A: In the infrared speed device 56, a signal that modulates the code corresponding to the pressed key at 50 KHz is output from the signal generation circuit, and the current is amplified by the drive circuit to drive the infrared generation diode, thereby generating the code applied to the stop key. The infrared signal modulated by Q is emitted toward the light receiving element 58 of the repeater 54.
(It will be done.

The repeater 54 photoelectrically converts the infrared signal emitted from the infrared transmitter 56 with the light receiving element 58, amplifies it with the amplifier 60, and then outputs it to the mixer 52 as a remote control signal.

When the VTR 32 is playing, the high frequency modulated video and audio signals output from the high frequency modulator 38 are sent to the separator 48, coaxial cable 50. It is transmitted from the B room to the A room via the mixed type 52 and is input to the TV 30, and is input to ICH (channel) or 2C.
It is displayed on H.

When a remote control signal is input to the mixer 52 in this state, it is superimposed on the high frequency modulation signal, and then, contrary to the high frequency modulation signal, it is transmitted from room A to room B via the mixer 52 and coaxial cable 50 and is input to the VTR 32. Ru.

In the VTR 32, the remote control signal is separated from the high frequency modulation signal by a separator 48 and is input to the receiver main body section 40.

In this receiver main unit 40, the remote control signal is sent to the decoder 4.
The signal is amplified by an amplifier 42 to an input level of 6, restored to a pulse train by a detection/waveform shaping circuit 44, and then determined by a decoder 46 to be a code related to a stop key. As a result, the decoder 46 outputs a stop control signal to a predetermined location of the VTR 32 to stop the play.

As a result of the above, the tape of the VTR 32 stops, the modulation signal output from the high frequency modulator 38 disappears, and the image on the TV 30 disappears.

Similarly, press A for the other keys that operate the VTR32.
It is transmitted from the room side to the B room side.

FIG. 4 is a configuration diagram of a remote control system showing another embodiment of the present invention, and in this FIG.
Two VTRs 70 and 72 are installed on the B room side. Each VTR 70, 72 has a video amplifier 74, 76, an audio amplifier 78, .
80, a high frequency modulator 82 connected to the output side of these video amplifier W74 and audio amplifier 78, and video amplifier 76.
and a high frequency modulator 8 connected to the output side of the audio amplifier 80.
4, a separator 86.88 connected to the output side of the high frequency modulators 82 and 84, and a receiver main body 90.92 connected to the separator 86.88.

The high frequency modulators 82 and 84 are modulated with different channel frequencies, for example, ICH (channel) and 2CH.

The output sides of the VTRs 70, 7217) and gIIs 86 and 88 are connected to one TV mixer 94 to mix each high frequency modulation signal, and then led to the A room side via one coaxial cable 96 of, for example, 75Ω. ing.

Two TVs 98 and 100 are installed in Room A. The end of the coaxial cable 96 on the side of room A is connected to the TV distributor 102 and is split into two parts, each of which is connected to a mixer 104, 106.
It is connected to the antenna terminal of LTTV98,100 via.

A repeater 108.110 is connected to each mixer 104.106. The repeater 108 is capable of receiving an infrared signal from an infrared transmitter 112 for operating the VTR 70, and the repeater 110 is capable of receiving an infrared signal from an infrared transmitter 114 for operating the VTR 72.
M operation can be performed.

According to the configuration shown in FIG. 4, the high-frequency modulated signals output from the VTRs 70 and 72 are mixed by a TV mixer 94, guided from room B to room A by one coaxial cable 96, and then sent to a TV distributor 102. However, by changing the modulation frequency, the signals can be transmitted independently.
)ICH.

By tuning to 2cH corresponding to TVlo 0QVTR71, you can watch different images on two TVs at the same time.

Further, the infrared signal emitted from the infrared transmitter 112 or 114 is photoelectrically converted by the repeater 108, 110,
Thereafter, the remote control signal is superimposed on the high frequency line by mixers 104 and 106.

This superimposed remote control signal is transmitted from room A to room B via the TV distributor 102 and coaxial cable 96, and then
It reaches the VTR To, 72 via the V mixer 94.

On the VTR 70, 72 side, the remote control signal is separated by separators 86, 88 and input to the receiver main units 90, 92.

The receiving device main unit 90.92 can identify the one related to its own VTR device from the code of the input remote control signal and perform predetermined control.
98@ICH, VTR72,! -Tune in to TV100Q2CH, point the infrared transmitter 112 for the VTR70 toward the relay 108, point the infrared transmitter 114 for the VTR72 toward the repeater 110, and operate the remote control of the VTR70 and VTR72? On the other hand, connect the VTR70 and TVloo to ICH, VTR72 and TV98Q2CH, and connect the infrared transmitter 112 for the VTR70 to the repeater 11.
0, the infrared transmitter 114 for the VTR 72 can be directed to the repeater 108, and remote control operations for the rVTR 70 and VTR 72 can be performed.

Note that although the case of a VTR has been described above as the image device, a video disc device or the like may also be used. Moreover, although the case where the imaging equipment is remotely controlled has been described above, what is remotely controlled may include other electrical equipment in addition to the imaging equipment.

<Effects of the Invention> As explained above, according to the remote control system of the present invention, it is possible to remotely control electrical equipment installed in a remote location with no visibility or in a separate room without increasing the burden of laying cables. become possible and easily realize advanced systemization.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing a remote control system according to an embodiment of the present invention, FIG. 2 is a circuit diagram showing a mixer in FIG. 1, and FIG.
A circuit diagram showing the separator in the figure, and FIG. 4 shows a remote control system according to another embodiment of the present invention.
rEJ, FIG. 5 is a block diagram of a conventional remote control system. 30...Television, 32...VTR. 48... Separator, 50... Coaxial cable, 52... Mixer, 54... Repeater, 56... Infrared transmitter

Claims (2)

[Claims] (1) An imaging device, a television, a signal cable that transmits a high frequency signal output from the imaging device to the television, an infrared transmitter that generates an infrared signal for controlling at least the imaging device, and an infrared signal. a repeater that receives the signal and converts it into an electrical remote control signal; a mixer that superimposes the output of the repeater onto the signal cable; and a mixer that is provided on the imaging equipment side and separates the remote control signal from the signal cable and transmits it within the imaging equipment. A remote control system characterized by having a separator that outputs an output to. (2) At least two image devices, a television set corresponding to each image device, a mixer for mixing first and second high frequency signals from each image device, and a high frequency signal cable from the mixer. a distributor that separates the first and second high-frequency signals transmitted through the television and distributes them to the first and second televisions, and a distributor that is provided corresponding to each image device to control the image device. an infrared transmitter that generates infrared signals for each infrared transmitter, a repeater that receives the infrared signals from each infrared transmitter and converts them into electrical remote control signals, and a mixer that superimposes the output of each repeater onto a high frequency signal cable. A remote control system comprising: a separator provided near each image device to separate the remote control signal from the signal cable and output it to the corresponding image device.