JPH0332279B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION When viewing television programs or reproducing and enjoying audio signals, the electronic devices necessary for these are componentized, and a plurality of electronic devices are often used at the same time. For example, when viewing a television program, a high quality color television monitor without a tuner and speakers, a television tuner, an audio integrated amplifier, and a speaker may be used.

When using multiple electronic devices at the same time, it is very difficult to remotely control each device by setting up a remote control commander for each device. He is a strong man. Therefore, it is possible to remotely control a plurality of electronic devices using a single commander common to the plurality of electronic devices.

In this case, a receiver may be provided to receive remote control signals from the commanders of all devices, but in that case, if the remote control signals are transmitted by wire, a large number of wires will be routed. Furthermore, when transmitting wirelessly using ultrasonic waves or the like, almost the same operation as remote control for each device is required, which also reduces the meaning of having a common commander. Therefore, by providing a receiving section in only one of the multiple electronic devices,
A system was devised in which the received remote control signal is supplied to the decoder of each device.

In this way, by providing each electronic device with the same remote control signal decoder, remote control becomes possible easily, and each device can be connected with a single remote control signal transmission line. There is an advantage.

FIG. 1 shows an example of such a case. For example, 10 is a television tuner, 20 is an audio pre-main amplifier, and 30 is a color television monitor. In this example, the television tuner 10 is provided with a remote control signal receiving section 10R. And each device 10, 2
0 and 30, controllers 11 and 21, which decode the received remote control signal and perform predetermined operations;
31 is provided.

40 is a commander, from which a remote control signal is supplied to the receiving section 10R through a transmission line or wirelessly as ultrasonic waves.

The remote control signal received by the receiving section 10R is supplied to the controller 11 of the television tuner 10, and is also supplied to the controller 21 of the audio pre-main amplifier 20 through the switch circuit 12 of the television tuner 10. At the same time, the signal is also transmitted to the controller 31 of the monitor receiver 30 through the switch circuit 22 of the integrated amplifier 20. Further, a terminal 50 is led out so as to be supplied to other electronic equipment as a remote control signal through the switch circuit 32 of the monitor receiver 30.

Since FIG. 1 only shows the transmission path of the remote control signal, the path of the television signal received by the tuner 10 is not shown. audio signal in a television signal received by
AS sends a color video signal to the integrated amplifier 20.
VS is supplied to the monitor receiver 30, respectively.

In this case, in principle the switch circuits 12, 2
2 and 32 may be omitted, and the remote control signal may be supplied to other electronic equipment as a single transmission line without passing through these switch circuits 12, 22, and 32. However, in this example, when an input signal is given to each electronic device by a key switch, etc., the key switch may control other electronic devices, so these switch circuits 1
2, 22, and 32 are provided. That is, when any of the key switches 14, 24, 34 is operated and an input signal is received, the controller 1
This is detected by the corresponding ones of switch circuits 1, 21, and 31, and the corresponding ones of switch circuits 12, 22, and 32 are switched to a state opposite to the state shown in the figure based on the detection output of the controller. Then, the signal generators 13, 23 and 3 are transmitted from the corresponding controllers.
A signal indicating the content to be controlled is supplied to the corresponding one of 3 by the key input signal, and this signal generator 13, 22, and 33 converts it into a code signal indicating the operation content, and generates a remote control signal. It is supplied to other electronic devices through the same transmission line. In this case, the electronic device connected after the electronic device having the receiving section 10R is connected to the commander 4.
0, the switch circuit 12, 22 or 32 returns to the state shown in the figure after the key input control is completed, so remote control is normally possible. It's summery.

By the way, in this case, the commander 40 can also control the power on/off of these plural electronic devices. In recent electronic devices, non-lock switches are used for ease of button operation, and power switches are also of the non-lock type, so-called toggle switches that reverse the power on/off status each time the switch is pressed. A power switch is used for operation. In other words, when the television tuner 10, integrated amplifier 20, and monitor receiver 30 are powered off, the commander 4
When the toggle power switch 0 is turned on once, the television tuner 10 is turned on, and at the same time the integrated amplifier 20 and monitor receiver 30 are turned on, and these electronic devices 10, 2 are turned on.
When the toggle power switch of the commander 40 is turned on again, all the electronic devices 10, 20, and 30 are turned off.

However, each of the electronic devices 10, 20, and 30 itself has a similar toggle power switch, and the power can be turned on and off by the toggle power switch of each device. In normal usage, the monitor receiver 30, tuner 10, and integrated amplifier 20 are all in the same power state so that they can all be used when watching television broadcasts, but depending on the usage situation, Not all equipment may be used. For example, this is the case when images recorded on a VTR are viewed directly on a monitor receiver. In other words, in this case, there is no need to turn on the power switch of the tuner 10.

Furthermore, in addition to being turned on and off by a toggle power switch, each electronic device often has a main power switch. This is because it is necessary to supply power supply voltage to the remote control signal decoder in each electronic device in advance, but if this main power switch is not turned on, the toggle power switch of that device will be turned on. Even if you operate the device, power will not be turned on. Of course, the remote control receiver 10R is powered on if this main power switch is turned on. In the case of a device having a main power switch in addition to such a toggle power switch, the main power switch may be turned off for some reason. Furthermore, even if such a main power switch is not provided, one of the electronic devices may be unplugged from the power outlet.

When this happens, the power status of other devices may be reversed from the power status of the electronic device, such as when the outlet is unplugged or the main power switch is turned off. Then, when the toggle power switch of the commander 40 is operated to turn on the monitor receiver 30, for example, the power of the tuner 10 is turned off, and this state continues no matter how many times the toggle power switch of the commander 40 is pressed. This is extremely inconvenient as the power supply status may not match.

In view of the above-mentioned points, the present invention makes it possible to control electronic devices that require the same power supply state during use, without causing the above-mentioned drawbacks, by using a single toggle power switch provided on the commander. This is an attempt to propose something that will make this happen.

An example of this will be explained below with reference to the drawings. In this invention, when a toggle power switch is turned on or off, all electronic devices other than the electronic device having the above-mentioned receiver are turned on. It obtains an on code to turn off the power to all other electronic devices or an off code to turn off the power to all other electronic devices, and uses these code signals to change the power status of multiple other electronic devices to the power status of the electronic device that has the receiver. It is characterized by control so that they always match.

That is, FIG. 3 is a specific example of this, and shows, for example, an example of the receiving section 10R and the power supply circuit section of the television tuner 10 shown in FIG.

In FIG. 3, 100 is a main power switch, and when this main power switch 100 is turned on, commercial AC power obtained between terminals 101A and 101B is passed through a transformer 102 to a rectifier circuit 103.
A predetermined DC power supply voltage can be obtained from this rectifier circuit 103. When the main power switch 100 is turned on, the circuit IC 104 including the remote control signal decoder 110 is powered on. A remote control signal from the commander 40 is received by the receiving section 10R and then supplied to the decoder 110. The signal from the receiving section 10R is also supplied to one input end of the switch circuit 12.

105 is a toggle power switch of this monitor television receiver, and this toggle power switch 10
5 is pressed once, for example, a flip-flop circuit provided in the decoder 110 is inverted,
If the previous state was the power off state, a high level signal is obtained from this decoder, which turns on the transistor 106, which causes the output DC voltage of the rectifier circuit 103 to pass through the relay 107. When a current flows and the contact piece is turned on, the commercial AC power obtained between the terminals 101A and 101B is rectified by the rectifier circuit 108, and the rectified output is supplied to the power line of the tuner circuit 109 to power the tuner circuit 109. Power will be applied to the circuit. When the power switch 105 is pressed again, the signal supplied from the decoder 110 to the base of the transistor 106 is inverted to low level, the transistor 106 is turned off, and the commercial AC power supply and the rectifier circuit 108 between the terminals 101A and 101B are An open circuit is established between the two and the power is turned off.

The above operation is the same when operating the toggle power switch of the commander 40, but in this case, when the remote control signal from the commander 40 is a signal for operating the toggle power switch, the decoder 110 detects it. , switch circuit 12 of FIG. 1 is switched to a state opposite to that shown. Further, when the power switch 105 is operated, since it is a key operation, the switch circuit 12 is switched to the state opposite to that shown in the figure, as described above.

In this example, the tuner circuit 109
A signal P 0 indicating whether the power is on or off depending on whether voltage is supplied to the power supply line is supplied to the IC 104, and the state of this signal _{P 0 is} detected and the output is used to generate a signal. Supplied to vessel 13,
If the power to the tuner circuit 109 is on, an on code to turn on the power to other electronic devices is obtained from the signal generator 13, and the tuner circuit 109
If 9 is in a power-off state, an off code for turning off the power of other electronic devices can also be obtained. The output of this signal generator 13 is supplied to the other input terminal of the switch circuit 12, as is clear from FIG.

With the above-described operation, it is possible to turn on and off the power of all the electronic devices that are normally used at the same time using the toggle power switch of the commander 40. However, if this continues, if the main power switch is turned off in any electronic device, there is a risk that the subsequent toggle operation will be reversed. Therefore, in this example, by utilizing the fact that the output of the rectifier circuit 103 gradually falls when the main power switch 100 is turned off, the gradually falling power supply voltage is set to a predetermined value higher than the voltage at which the power is turned off. When the voltage drops below the voltage value, it is determined that the main power switch 100 has been turned off, and the signal generator 13 generates an off code to turn off all electronic devices. The voltage detector 111 is connected to the rectifier circuit 103 when the main power switch 100 is turned off.
This is to detect the fall of the power supply voltage.

As described above, according to the present invention, when controlling a plurality of electronic devices with a single remote control commander, when controlling the power supply with only one toggle power switch of this single commander, each This eliminates the possibility of the toggle power operation of electronic devices being reversed and becoming misaligned, making it extremely convenient for remote control when a plurality of electronic devices are used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram illustrating an overview of an example of the invention, FIG. 2 is a diagram showing a specific example of connection of electronic equipment, and FIG. 3 is a circuit diagram of an example of the main part of the invention. 10, 20, and 30 are electronic devices, 40 is a commander, 10R is a remote control signal receiving section, and 105 is a non-lock type power switch.

Claims (1)

[Claims] 1 To remotely control multiple electronic devices, each of which has a non-locking power switch and can be turned on and off by toggling, using a single commander. In this case, one of the plurality of electronic devices is provided with a receiving section for receiving a remote control signal from the commander, and the remote control signal transmitted through the receiving section is transmitted to a single transmission line to which the plurality of electronic devices are connected. A power on or off command is given to the receiver by a single non-lock switch for power control provided in the commander. At this time, an electronic device having this receiving section obtains a command signal to turn on or turn off the power to all of the other electronic devices, regardless of whether the power is turned on or off, and this signal is transmitted as described above. A remote control device configured to be supplied to each of the plurality of electronic devices through a line.