JPH0359869A - Power unit - Google Patents

Abstract

PURPOSE:To share one AV unit group in respective rooms by receiving signals from plural remote controllers, transmitting and reproducing video signals outputted from AV units to plural places. CONSTITUTION:The desired AV unit is designated by necessary remote controllers 7, 9 and 12 from respective rooms 1-3 to attain remote control. The control signal is transmitted to a controller 18 controlling one AV unit group, the designated AV unit is controlled, a reproduced output signal is selectively switched and connected through a selector device 21 and is transmitted to respective rooms 1-3 through a signal cable. Respective rooms 1-3 receive the transmitted signal and output them through TV receivers 4 and 8 or audio amplifiers 5 and 10. Thus, the AV unit group can freely and easily be used in plural rooms only by arranging one AV unit group.

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention controls a set of AV equipment by remote control from a plurality of rooms, and reproduces video and audio from the AV equipment individually in each room. The present invention also relates to a device that controls on/off of the power of the AV equipment group.

"Conventional technology" As AV equipment, VTR, (video tape recorder),
LD (laser disc), radio broadcast tuner, CD (compact disc), etc. are known and used. These AV devices are usually installed in the living room and used together by the family, but if you want to use them privately outside the living room, you will need to purchase these devices separately and it will be economical. This poses a heavy burden. Therefore, the - group of AVi devices is installed at a predetermined location, a remote control device terminal is provided in each room, the AVi device group is controlled by a control signal from each remote control terminal, and the reproduced signal is transmitted to each room. The applicant has proposed a system that transmits the information to the computer and reproduces and outputs it using equipment installed in each room.

``Problems to be Solved by the Invention'' The present invention enables a group of AV devices to be used individually and freely as a common device, thereby reducing the economic burden of arranging each separately. In order to share a group of AV devices in each room, a problem arises in that it is troublesome to go to a predetermined location where the AV devices are installed to turn on and off the power of the AV devices.

In order to solve these problems, the present invention provides a power supply device that can automatically control the power supply of AV equipment in response to the on/off control of the power supply of the equipment installed in each room. .

``Means for Solving the Problems J'' The present invention solves the above-mentioned problems, and includes an AVJ device that receives signals from remote control devices installed in a plurality of locations and reproduces and outputs images, etc., and the AV equipment. A power source for the TV receivers, etc. installed in the plurality of places, in which video signals, etc. output from A detection section that detects on/off of the switch, an OR circuit that inputs the signals from each detection section, a switching circuit that is activated by the signal from the OR circuit, and a relay device that uses the signal from this switching circuit. etc., and the AV
Provided is a power supply device that includes a power supply unit that turns on and off power to equipment.

"Function" Since the present invention is constructed as described above, a desired AvIl device is designated from each room using a required remote controller and controlled by remote controller. This control signal is transmitted to the controller that controls the - group of AV equipment, which controls the AV equipment designated by the tag,
The reproduced output signal is selectively switched and connected via a selector device and transmitted to each room via a signal cable.

Each room receives the transmitted signal and outputs it via a TV receiver or audio amplifier.

"Example" Hereinafter, the present invention will be described in detail based on the drawings. 1st
The figure is a block diagram of main parts of an embodiment of controlling AV equipment. FIG. 2 is a connection diagram of an embodiment of the power supply device for AV equipment according to the present invention. In the figure, 1.2.3 indicates each room,
A TV receiver 4, an audio amplifier 5, and a speaker device 6 are installed in room 1, a TV receiver 8 is installed in room 2, and an audio amplifier 10 and a speaker device 11 are installed in room 3. 7.9.12 is a remote control receiver that receives remote control signals installed in each room.
The received remote control signal is transmitted to the controller 18.

13 is a VTR (video tape recorder), 14 is a radio tuner for FM broadcasting, etc., 15 is an audio tape recorder, 16 is a CD (compact disc), and 17 is an LD.
(laser disc) or other AV equipment, controller 1
8, each is connected by wire to receive a control signal. Reference numeral 21 denotes a selector device, which selects and switches the output signal from the AV equipment in response to remote control control using a control signal from the controller 18, and is connected to the TV receiver or audio amplifier in each room via signal lines 24 and 25. are doing.

26 is a power switch for the controller 18, the AV equipment group, the selector device 21, etc., and 28 is a remote controller. 30 indicates equipment installed in each room (for example, TV receiver 4); 1.31 is a transformer that detects the flow of current;
32 is a rectifier circuit, 33 is a device installed in each room (for example, audio amplifier 10), 34 is a transformer that detects the flow of current, 35 is a rectifier circuit, 36 is a power supply section of the AVQ device, and 37 is an OR circuit , 38 is a switching circuit, 3
9 is a relay device; 40 is a power switch for the power supply unit 36; 41 is a power supply circuit for the AV equipment.

Next, the control operation of the AVli device according to the present invention will be explained. First, in the room 1, the user turns on the power switch of the TV receiver 30 (corresponding to the TV receiver 4 in FIG. 1) in order to watch images from the VTR 13. When the power switch of the TV receiver 30 is turned on, current flows through the transformer 31 and generates a voltage in the secondary winding of the transformer. The generated voltage is rectified by a rectifier circuit 32 and outputs a required voltage signal. This voltage signal is applied to OR circuit 37 to generate a positive output signal, causing switching circuit 28 to become conductive, causing current to flow through connected relay device 39, and closing switch 40. By turning on this switch 40, the power of the AV equipment is also turned on, and the AV equipment group is put into an operating state. Thereafter, the remote control controller 28 is operated to, for example, playback the video of the VTR 13. Control signals such as infrared rays from the remote control controller 28 are received by the remote control receiving section 7' of the remote control light receiving device 7, amplified as necessary, and subjected to waveform shaping, etc.
The signal is transmitted via the signal line 19 and applied to the controller 18 . In the controller 18, the transmitted signal is V T
It identifies the signal as a remote control signal from the R13, and instructs the VTR 13 to play the video via the signal line 20. Note that the control signal of the remote control is transmitted to the controller 18 at the same time as the control code signal and the modulation signal, and is applied from the controller 18 to each AV device. Each AV4i device that receives this control signal may individually identify the corresponding modulation signal and control code signal.These may be reversed since the remote control signal of the AV equipment has a different modulation frequency etc. depending on the equipment. The device is configured to individually identify these different modulation frequencies and control code signals. Then, the signal reproduced by the VTR 13 is transferred to the signal line 22.
is transmitted to the selector device 21 via. On the other hand, the selector device 21 is connected via a signal line 23 to a control signal for selecting the reproduction signal of the VTR 13 identified by the controller 18 as appropriate, and is connected to an audio signal (stereo signal) via a signal line 24. ) and signal line 25
The video signal is transmitted to each room separately. in this case,
The signal line 24 consists of two shielded cables (3 with a common ground
A coaxial cable may be used as the signal line 25 (a core cable may also be used), but the signal line 25 is not limited to this.

In room l, the TV receiver 4 can directly receive the video signal transmitted through the signal line 25 via the video terminal, and the audio signal transmitted through the signal line 24 can be received by the audio amplifier. 5 and listen to it through speakers in stereo or the like, or by connecting it to the audio terminal of the TV receiver 4. Of course, these signals can be similarly received in the room 2 as well.

On the other hand, if you want to enjoy music in the room 3, first turn on the power switch of the audio amplifier 33 (corresponding to the audio amplifier 10 in FIG. 1). audio amplifier 33
When the power switch is turned on, current flows through the transformer 34 to generate a voltage in the secondary winding of the transformer, which is rectified by the rectifier circuit 35 and outputs a required voltage signal. The voltage signal is applied to the OR circuit 37, which generates an output signal of the tag, turns the switching circuit 28 into a conductive state, and connects the relay device 3.
9 and closes the switch 40. By turning on the switch 4o, the power of the AV equipment is also turned on, and the AV equipment group is put into an operating state. Thereafter, a remote control signal corresponding to, for example, the audio tape recorder 15 is output to the remote control light receiving device 12 via a remote control controller (not shown). The control signal received by the receiving section 12 of the remote control light receiving device 12 enters the controller 1B via the signal line 19, identifies that it is a control signal for the audio tape recorder 15, and transmits the signal line to the audio tape recorder 15. A tape playback control signal is output through the 20° angle, and the audio tape recorder 15 is placed in a playback state.

The reproduced audio signal is applied to the selector device 21 via the signal line 22' and is switched by a control signal for selecting the audio tape recorder 15 from the controller I8 via the signal line 23, and the audio signal is applied via the signal line 24. , transmitted to each room. The audio signal transmitted through the signal line 24 is amplified by the audio amplifier 10 and output from the speaker 11.

Naturally, this audio signal can also be played back by the audio device in room l.

Apart from this, each TV receiver 4.8 has a receiving section 4" 8° for remote control reception. This is because in the case of a TV receiver, TV broadcasts etc. are often watched individually. , each can be operated independently by remote control, and as mentioned above, the channels etc. can be controlled via the controller 18, and the signals can be transmitted to each room via the signal lines 24 and 25 for viewing. good.

Please note that the power to the AVi devices can be turned off at the T in each room.
If all the power supplies of the V receiver or audio amplifier are turned off, all the signals input to the OR circuit 37 will be at zero level, so the switching circuit 38 will be cut off, and no current will flow through the relay device 39. The switch 40 is turned off to automatically turn off the power to the AV equipment group.

In the above description, a so-called adapter type was used in which a transformer was interposed between the TV receiver and the power source, but the present invention is not limited to this. For example, T
When a power switch is turned on in a V receiver or the like, even if a voltage signal for detecting power-on is extracted from within the device, if the OR circuit 37 is controlled by the extracted voltage signal, the same effect as described above can be achieved. Obtainable.

"Effect of the Invention J Since the present invention is configured as described above, it can be used freely and easily in multiple rooms by just preparing one set of AV devices, and it is also economical. ,
This provides the convenience of controlling the power supply of AV equipment from each room where music or the like is being enjoyed.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a main part of an embodiment of a method for controlling an AV device, and FIG. 2 is a connection diagram of an embodiment of a power supply device for an AV device according to the present invention. In the figure, 4.8 is a TV receiver, 5.10 is an audio amplifier, 6.11 is a speaker device, 7.9.12 is a remote control receiver, 18 is a controller, 13 is a VTR, 14 is a tuner, and 15 is an audio device. A tape recorder, 16 is a CD, 17 is an LD, 21 is a selector device, 26 is a power switch, 31.34 is a transformer, 32.35 is a rectifier circuit, 37 is an OR circuit, 38 is a switching circuit, and 39 is a relay device. be.

Claims (1)

[Claims] A group of AV equipment that receives signals from remote control devices installed at a plurality of locations and reproduces and outputs video, etc.; and a group of AV equipment that transmits video signals, etc. output from the AV equipment to the multiple locations, A detection unit that detects whether the power of the TV receivers or the like installed at multiple locations is turned on or off in a device that is played back on TV receivers or the like installed at each location;
an OR circuit that inputs signals from each detection section,
It is characterized by being composed of a switching circuit that is activated by a signal from an OR circuit, and a power supply unit that drives a relay device, etc. with a signal from this switching circuit, and turns on and off the power of the AV equipment group. power supply.