JPH02226898A - Av control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an AV remote control system suitable for use in AV equipment including television receivers and VTR1 satellite broadcast receiver tuners (BS tuners).

[Prior Art] Conventionally, devices such as television receivers and VTRs have been equipped with remote control units (hereinafter referred to as remote controls), and various operations, including turning the power on and off, can be selected by operating the remote control. can be made to do so. This makes it possible to conveniently operate the device from a remote location without having to operate the operating section provided on the device itself.

[Problems to be Solved by the Invention] However, these conventional devices are configured so that they do not operate unless they are individually operated. There was a problem in that the operation had to be performed each time, making the operation complicated and time-consuming.

For example, when displaying reproduced images from a VTR on a television receiver, it is necessary to operate each of them in order to operate them.

(1) Turn on the power of the television receiver.

(2) Turn on the power of the VTR.

(3) Switch the input of the television receiver.

(4) Set the VTR to playback mode.

A series of operations are required at least.

An AV remote control system has also been developed that allows a television receiver and VTR to be operated with a single remote control, but this also requires turning on and off the power for each device individually. First, when both the television receiver and the VTR are powered on, the input of the television receiver is simply switched to the VTR side.

It is an object of the present invention to provide an AV control system that solves these problems, simplifies the operation of each device in a system consisting of various AV devices, and has greatly improved usability.

[Means for Solving the Problems] In order to achieve the above object, the present invention connects a plurality of AV devices with a system cable to enable bidirectional communication, and includes turning on/off the power of each AV device. An operation code for various operations is input from one specific AV device, and when the desired AVfi device is powered on by the operation code, other desired AV devices to be linked to this are input from the desired AVlml. The system is configured to send an operation code for turning on AM via the system cable.

[Operation] A desired AV device that decodes an operation code input from a specific AV device starts operating according to this operation code, but multiple AV devices that should be linked together, such as a VTR and a television receiver, For.

When the desired AV equipment is powered on using the operation code, 5
From now on, an operation code to turn on the power is sent to other desired AV equipment to be linked via the system cable. As a result, by simply turning on the power to a desired AV device, all other AV devices that should be linked to this turn on the aS.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the AV control system according to the present invention, in which FIG. 1 is an overall configuration diagram, and FIG. 2 is a diagram showing a specific example of the operation code input section. , Fig. 3 is a diagram showing the communication system of the operation code, in which 1 is the television receiver, 2 is the system cable for the VTR 13, and 4 is the communication system for the operation code.
5 is a video transmission line, 5 is an audio transmission line, 6 is an antenna, 7 is a light receiving section, 8 and 9 are light receiving elements, and 10.11 is a microprocessor.

In FIG. 1, as in the past, a television receiver 1 and a VTR 2, each of which can be operated individually, are connected to a video transmission line 4.
and an audio transmission line 5, and in the recording mode of the VTR 2, programs received by the antenna 6 are recorded. In the playback mode, the video signal of the program to be played is transmitted to the television receiver 1 via the video transmission line 4, and the audio signal is transmitted to the television receiver 1 via the audio transmission line 5, respectively.
The image of the program being played is displayed and the audio is output.

In this embodiment, the television receiver 1, VT
The system cable 3 can be used to connect between R2 and R2.

When these are not connected by the system cable 3, the television receiver 1 and the VT
R2 must be operated individually with a remote control, but when they are connected with the system cable 3, when operating the television receiver 1 and VTR 2 with a remote control, the operation code for that purpose is An operation code for operating the VTR 2 is input from the device 1 side and is supplied from the television receiver 1 to the VTR 2 via the system cable 3.

As shown in FIG. 2, a light receiving section 7 is provided on the front of the television receiver 1, and when the infrared rays modulated by the operation code generated by the remote control are received by the light receiving section 7, the operation code is transmitted. It is input from the television receiver 1. Of course, the VTR2 is also provided with a similar light receiving section (
(not shown), when the television receiver 1 and the VTR 2 are connected by a system cable, input of an operation code from this light receiving section of the VTR 2 is prohibited.

However, even if the television receiver 1 and the VTR 2 are connected through the system cable 3, they can each be operated independently using the respective operation sections.

Next, in FIG. 3, the television receiver 1 includes a microprocessor 10 for operating it, and a V
TR2 has a microprocessor 1 to operate it.
1 are provided respectively. The microprocessor 1o receives an operation code that is received when the light receiving element 8 in the light receiving section 7 (FIG. 2) of the television receiver 1 receives infrared rays from the remote control, or input from the operation section of the television receiver 1. The television receiver 1 is caused to perform an operation according to the input operation code. The microprocessor 11 of the VTR 2 is similar, and receives an operation code input by receiving infrared rays from the remote control from the light receiving element 9 and an operation code input from the operation section of the VTR 2,
2 to perform an operation according to the retrieved operation code.

System cable 3 connects these microprocessors 10.1
1 to enable two-way communication of operation codes between them. Also, when system cable 3 is connected,
The microprocessor 11 of the VTR 2 prohibits the input of operation codes by the light receiving element 9 9 On the other hand, the operation codes output from the remote control have different headers for the television receiver 1 and for the VTR 2, Processor 10.11
Each has a function of using this header to identify whether or not the operation code is for itself. Therefore, the operation codes for the television receiver 1 and the VTR 2 are both input from the light receiving element 8 of the television receiver 1.
First, whether or not the operation code input by the microprocessor 1o is for the television receiver 1 is identified by its header. When this operation code is for the television receiver 1, the microprocessor 10 operates the television receiver 1 according to this operation code, but when this operation code is not for the television receiver 1, the microprocessor 10 operates the television receiver 1 according to the operation code. The processor 10 sends this operating code to the microprocessor 11 of the VTR 2 via the system cable 3. Therefore, this microprocessor 11 receives the received operation code from the VTR 2.
The VTR 2 is operated according to this operation code.

The microprocessor 11 identifies the operation code and the VTR 2.
This program has a program for operating the television receiver 1 in accordance with an operation code, and this program also has a function of generating an operation code for the television receiver 1 necessary for interlocking the television receiver 1 with the VTR 2. An operation code for interlocking the television receiver 1 and the VTR 2 is input from the light receiving element 8 as a code for the VTR 2, and when the microprocessor 11 receives this operation code, it operates the VTR 2 according to this operation code. However, at the same time, an operation code for the television receiver 1 is created and sent to the microprocessor 10 via the system cable 3. The microprocessor 10 identifies this operation code 5 and operates the television receiver 1 according to this operation code.

Therefore, when the television receiver 1 and the VTR 2 are powered off and the remote control is used to turn on the VTR 2, an operation code for this is transmitted from the light receiving element 8 to the microprocessor 10. The signal is supplied to the microprocessor 11 via the system cable 3, and the VTR 2 is powered on.

At the same time, the microprocessor 11 creates an operation code for turning on the television receiver 1 and an operation code for switching the input of the television receiver 1 to the VTRZ side, and sends them to the microprocessor 10 via the system cable 3. As a result, the power on the television receiver is turned on, and the input is switched to the VTRZ side.
The program received by the antenna 6 (FIG. 1) of the VTR 2 is displayed. after that.

When a recording operation is performed using the remote control, the operation code is sent to the television receiver 1. The program is supplied to the microprocessor 11 via the system cable 3, and the program received by the antenna 6 is recorded by the VT and R2.
When playback is performed using the remote control, the VT
Reproduction is performed in R2 and the reproduced program is displayed on the television receiver 1. Operation codes for various contents, such as operation codes for setting various modes such as rewind and fast forward, and operation codes for tuning with the tuner of the VTR 2, are also sent to the VTR 2 via the television receiver 1.

In this way, the operational status of the television receiver 1 and VTR 2 can be changed by operating codes from the remote control, but the microprocessor 11 also creates an operation code for turning on the television receiver 1.

As a result, if the off timer is set in the VTR2, when the built-in timer detects the time when the VTR2 is turned off, the microprocessor 11 will turn off the VTR2.
At the same time, an operation code for turning off the power to the television receiver 1 is created and sent to the microprocessor 1o via the system cable 3.

As a result, the television receiver 1 turns off the 'W1 source.

Note that simply turning on the VTR2 does not turn on the power on the television receiver, and when the VTR2 is set to 'D' mode or various playback modes, the power on the television receiver 1 will not turn on.
It is also possible to switch the input to the VTR 2 side by turning on tl[. However, in television receiver 1,
It is clear from the above operation using the operation code of the microprocessor 10 that the power can be turned on and off independently using the remote control. Furthermore, as is clear from the above explanation, regardless of whether the television receiver 1 is powered on or not, the operation code from the remote control can be used to control the VTR.
When TV receiver 2 is turned on, television receiver 1 turns on VTR 2.
Input switching to the side is performed.

When the microprocessor 11 receives the operation code from the microprocessor 10, it sends a response (No. 8) to that effect to the microprocessor 10, and
When receiving the operation code from the microprocessor 11, it sends a response signal to that effect to the microprocessor 11.

These microprocessors 10 and 11 repeatedly send operation codes when there is no response signal, but the number of repetitions varies depending on the content of the operation code, and when there is no response signal even after repeatedly sending the operation code the specified number of times, , abort sending this operation code.

Therefore, when the television receiver 1 and the VTR 2 were not connected with the system cable 3, the operation code for the television receiver 1 from the remote control was accidentally transferred to the VTR.
In this case, the microprocessor 11 takes in the operation code input from the light receiving element 9, so the microprocessor 11 identifies the input operation code as one for the television receiver 1. Output to the connection terminal of system cable 3.

However, because system cable 3 is not connected, there is no response signal indicating that this operation code has been imported.
The microprocessor 11 repeatedly outputs the same operation code. If there is no response signal even after outputting the operation code a specified number of times, the microprocessor 11 determines that the television receiver 1 is not connected through the system cable 3, and stops outputting this operation code.

FIG. 4 is a block diagram showing another embodiment of the AV control system according to the present invention, in which 12 is an AV control amplifier, 13 is a VTR 114, which is a television receiver, and 15 is a B, S tuner.

The embodiments shown in FIGS. 1 to 3 relate to an AV system consisting of one television receiver and one VTR, but the embodiment shown in FIG. The present invention relates to an AV system consisting of equipment. Here, the AV system is made up of a VTR, a television receiver, and a BS tuner, but the same applies even if other AV equipment is added.

In FIG. 4, a VTR 13, a television receiver 14
．． The BS tuner 15 is connected to the system cables 3a and 3b, respectively.
, 3c are connected to the AV control amplifier 12. These VTRs 13° television receivers 14.
BS tuner 15.

Each of them is equipped with a light receiving section for infrared light from a microprocessor and a remote control as explained in FIG.

System cables 3a, 3b as shown.

When 3c is connected, as in the previous embodiment,
VTR13, television receiver 14. BS tuner 1
All operation codes from the remote control for each of the 5 units are input to the television receiver 14, and then supplied to the AV control amplifier 12 via the system cable 3b for processing, and then sent to the AV control amplifier 12 via the system cables 3a, 3b, 3c.
TR13° television receiver 14. BS tuner 15
is supplied to Here, the AV control amplifier 12 has a function of controlling each device, and serves as a switch that once inputs the output of each device and outputs it to a desired device. For this,
A control signal containing a header and an input operation code for the device to which this output is to be supplied is output. As a result, VTR 13, television receiver II & 14. B.S.
The tuner 15 and the like each use a microprocessor to identify whether or not the operation code is for itself from the header, and when it is the operation code for itself, performs an operation according to this operation code.

Further, in the VTR 13 and BS tuner 15, when it is necessary to operate other AV equipment such as the television receiver 14 in conjunction with the operation thereof, an operation code for the other AV equipment is created and transmitted. As a result, when the BS tuner 15 is operated and the VTR 13 is set to playback mode, the above function of the AV control amplifier 12 causes the television receiver 14 to display an image with the playback output of the VTR 13, and the audio from the BS tuner 15. You can also make it do things like make it emit a sound using a signal.

FIG. 5 is a diagram showing a specific example of the connection means between the AV control amplifier 12 and each system cable in FIG.

17b is a plug, 18a and 18b are sockets, and the fourth
Parts corresponding to the figures are given the same reference numerals.

In the figure, a plug 17a is provided at the end of the system cable 3a, and a plug 17b is also provided at the end of the system cable 3b. These plugs 17a, 1
7b can be inserted into a socket 16 provided in the AV control amplifier 12, and by plugging into this, the system cables 3a, 3b are connected to the AV control amplifier 12.

In addition, each plug 17a, 17b also has a socket 18a, 18.
b is provided. The plug 17b can be inserted into the insertion port 18a of the plug 17a, thereby connecting the system cable 3b to the system cable 3a. Conversely, the plug 17a can also be inserted into the insertion port 18b of the plug 17b, and thereby the system cable 3
a is connected to the system cable 3b.

Similar plugs are also provided at the ends of system cables that are connected to other AV equipment such as the BS tuner 15 in FIG. 4, so that all system cables can be connected to each other.

Therefore, in Fig. 5, the plug 17a of the system cable 3a is inserted into the socket 16 of the AV control amplifier 12, and the plug 17b of the system cable 3b is inserted into the socket 18a of this plug 17a. By inserting the plug,
Each AV device is connected to an AV control amplifier 12.

[Effects of the Invention] As explained above, according to the present invention, it is possible to operate multiple AV devices that should be linked together with a single operation, simplifying the operation of the AV system and greatly improving usability. improve.

[Brief explanation of the drawing]

1 to 3 show an embodiment of an AV control system according to the present invention, in which FIG. 1 is an overall configuration diagram, and FIG. 2 is a diagram showing a specific example of an operation code input section. FIG. 3 is a diagram showing the communication system of the operation code, FIG. 4 is a block diagram showing another embodiment of the AV control system according to the present invention, and FIG. 5 is a diagram showing the connection between the AV control amplifier and each system cable in FIG. It is a figure which shows one specific example of a connection means. 1...Television receiver, 2...V
TR13゜3a, 3b, 3c... System cable, 7... Light receiving section, 8, 9... Light receiving element, 10, 11... Microprocessor, 12・
...AV control amplifier, 13...
VTR114...Television receiver, 15.
...BS tuner.

Claims (1)

[Claims] 1. Connecting AV devices with a system cable to enable bidirectional communication, and specifying one means for inputting operation codes for various operations including turning on/off the power of each AV device. as an operation code input means for the AV device, and the desired AV device.
Upon reception of the predetermined operation code at the device, the desired A
The operation code required for interlocking is transmitted from the V device to other desired AV devices to be linked via the system cable, and various operations including power on/off of each of the AV devices can be performed. An AV control system characterized by the following configurations. 2. In claim 1, the operation code is output from a remote control unit, and the header of the operation code is different for each of the AV devices.
V control system. 3. In claim 2, each of the AV devices identifies its own operation code using the header, and transmits the operation code of another AV device via the system cable according to the own operation code. An AV control system characterized by being able to output. 4. In claim 1, 2 or 3, the system cable is removable, and each of the AV devices
An AV control system characterized in that it can be operated independently when the system cable is removed. 5. In claim 1, 2, 3 or 4, the specific A
An AV control system characterized in that the V device is a television receiver, and one of the other AV devices is a video tape recorder. 6. The AV control system according to claim 5, wherein the television receiver is powered on together with the video tape recorder by inputting the operation code for turning on the power of the video tape recorder. 7. The AV according to claim 5, wherein the television receiver is powered on and off in conjunction with the power on and off of the video tape recorder by a timer.
control system.