JPH11252824A - Remote control waiting device of electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the power consumption of an electronic apparatus capable of turning on/off the control for a power supply through remote control. SOLUTION: In a remote control waiting device, when a power supply is in an ON state, a port 1 of a control microcomputer 1 is at the High side, a 3rd switch 8 is in an OFF state, a 2nd switch 5 is turned to a High level side and a 1st switch 3 is in an ON state. A controlling microcomputer 1 is in a power supplying state, and at the same time, a main power supply control circuit 7 is in a power non-supplying state. If a 1st remote control photodetector unit 2 receives a power supply OFF signal from a remote control transmitter, the level of the port 1 of the control microcomputer 1 is switched to a Low level, and the 2nd switch 5 is turned to a 2nd remote control side, and at the same time, the 3rd switch 8 is turned on. In this state, a 2nd remote control photodetector unit 6 waits for a signal from the remote control transmitter, and if a specific pulse signal which gives a power supply ON command is outputted by the remote control transmitter, the previous state is restored and the power supply is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control standby device for an electronic device in an electronic device that can be controlled by a remote control transmitter, and more particularly to reducing power consumption during standby of the remote control.

[0002]

2. Description of the Related Art Conventionally, in an electronic device which can be controlled by a remote control transmitter, even when the power is turned off and the device is not used, a signal from the remote control transmitter can be received and the power turned on again. Therefore, the device is in a remote control standby state. Therefore, such a device consumes power in the remote control standby state because the microcomputer and peripheral circuits inside the device are operated even when the power is off, and such power consumption is generally referred to as standby power. Calling.

[0003]

In recent years, due to the massive consumption of fossil fuels such as petroleum and coal by human beings, a large amount of global warming gas such as carbon dioxide is released, which causes environmental change on a global scale. And interest in global environmental issues is growing rapidly.
Also in electronic devices, it is required to minimize wasteful consumption of power, and reducing the standby power described above is a major issue.

In the above-mentioned conventional electronic devices, when the device is not used in order not to consume the standby power, the main power is turned off or the power supply is disconnected by disconnecting the power cord, so that the device waits for the remote controller. The simplest approach is to avoid it, but this is very inconvenient to use.

[0005]

According to the present invention, there is provided a main power supply circuit, a control microcomputer for controlling the operation of a device, and a first microcomputer for receiving a control signal from a remote control transmitter.
And a control signal processing circuit for processing a control signal received by the first light receiving unit and transmitting the control signal to the control microcomputer. A second light receiving section for receiving light, a main power supply control circuit for controlling supply and cutoff of power from the main power supply circuit to the control microcomputer based on a control signal received by the second light receiving section; It is an object of the present invention to provide a remote control standby device for an electronic device including a sub power supply circuit for supplying power to a main power supply control circuit.

According to the present invention, there is provided a remote control standby device for electronic equipment in which the sub-power supply circuit includes a solar cell and a secondary battery charged by the solar cell.

Further, according to the present invention, a main power supply circuit, a control microcomputer for controlling the operation of the device, a first light receiving portion for receiving a control signal from a remote control transmitter, and a control signal received by the first light receiving portion And a control signal processing circuit for transmitting the control signal to the control microcomputer, a second light receiving unit for receiving a control signal from the remote control transmitter, and a second light receiving unit for receiving a control signal from the remote control transmitter. It is composed of a main power supply control circuit that controls the supply and cutoff of power from the main power supply circuit to the control microcomputer based on the received control signal, a solar battery, and a secondary battery charged by the solar battery. A sub-power supply circuit for supplying power to the main power supply control circuit; and a main power control supply control from the sub-power supply circuit when power is supplied from the main power supply circuit to the control microcomputer. A sub-power supply control circuit for supplying power to the main power supply control circuit from the sub-power supply circuit when power is not supplied from the main power supply circuit to the control microcomputer while interrupting power supply to the circuit. And a remote control standby device for an electronic device provided with a circuit.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. First, FIG. 1 is a circuit block diagram showing a remote control standby device according to the present invention. In the figure, reference numeral 1 denotes a control microcomputer for controlling the devices, 2 denotes a first remote control light receiving unit for receiving a signal from a remote control transmitter (not shown) during normal use (not when the power is turned off),
Reference numeral 3 denotes a first switch for controlling power supply from a main power supply circuit (not shown), which is a power supply for the entire apparatus. A second remote control light receiving unit for receiving a signal from the remote control transmitter; and a main power supply control circuit for controlling the second switch in response to the second remote control light receiving unit receiving a signal from the remote control transmitter. , 8
A third switch 8 controls the power supply from the sub-power supply circuit described later to the main power supply control circuit 7, and the third switch 8 is controlled by the control microcomputer 1. further,
Reference numeral 9 denotes a charging circuit which reduces the power obtained from the solar cell 11 by 2
The next battery 10 is charged. The charging circuit 9, the secondary battery 10, and the solar battery constitute a sub-power supply circuit.

The secondary battery 10 is not limited to a general rechargeable battery such as a nickel cadmium battery or a lithium ion battery, but may be an electric double layer capacitor. Further, the control microcomputer 1 includes a control signal processing circuit for decoding a signal received by the first remote control light receiving section 2. Of course, a separate semiconductor IC may be used. Further, the low-pass filter 4 is a filter for absorbing a voltage fluctuation generated when the second switch 5 is switched.

Next, the operation of the remote control standby device of the present invention will be described in detail with reference to the flowchart of FIG. First, when the power is on, the port 1 of the control microcomputer 1 is at the high level, whereby the third switch 8 is open and off, and the second switch 5 is switched to the high side. As a result, the first switch is in the ON state, the control microcomputer 1 is in the power supply state, and the main power supply control circuit 7 is in the non-power supply state (S1).

Therefore, in this state, the signal from the remote control transmitter can be received by the first remote control light receiving unit 2, and the device can be operated by the signal received by the first remote control light receiving unit 2 (S2). . In this state, since the power supply from the sub power supply circuit to the main power supply control circuit 7 is cut off, the second remote control light receiving section 6 does not receive a signal from the remote control transmitter and does not malfunction. During this time, the electric power generated by the solar battery is charged to the secondary battery by the charging circuit 9.

When the power-off signal from the remote-control transmitter is received by the first remote-control light-receiving unit 2 (S3), after the operation of the operating device is stopped (S4),
The port 1 of the control microcomputer 1 becomes Low level, and accordingly, the second switch 5 is switched to the second remote controller side, and the third switch 8 is closed and turned on. As a result, the first switch 1 is turned off, power supply to the control microcomputer 1 is cut off, and power is supplied from the sub power supply circuit to the main power supply control circuit 7 (S5).

In this state, the second remote control light receiving section 6 waits for a signal from the remote control transmitter (S6). When a specific pulse signal giving an instruction to turn on the power is given from the remote control transmitter, the process returns to S1 again to turn on the power.
Is performed.

In the standby state of the remote controller, the main power supply control circuit 7 operates only by the power supply from the sub power supply circuit, so that unnecessary standby power consumption from the commercial power supply is suppressed. When the remote control is on standby, the power is turned on again.
Since the pulse signal for setting the state is a signal simpler than a signal (control command) of a normal remote controller, there is no need for a decoding process. Therefore, even if a control microcomputer with large power consumption is not used, a simple circuit for simply controlling the second switch 5 and the third switch 8 in response to a specific pulse signal may be used, so that the power consumption is extremely small. Therefore, it is possible to stand by the remote controller for a long time only by supplying power from the secondary battery 20 of the sub power supply circuit.

[0015]

As described above in detail, according to the present invention, the main power supply circuit, the control microcomputer for controlling the operation of the device, the first light receiving section for receiving the control signal from the remote control transmitter, And a control signal processing circuit for processing a control signal received by the first light receiving unit and transmitting the control signal to the control microcomputer. A main power supply control circuit that controls supply and cutoff of power from the main power supply circuit to the control microcomputer based on a control signal received by the second light receiving unit; and a power supply to the main power supply control circuit. And a sub-power supply circuit for supplying power to the remote controller.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram showing a remote control standby device of the present invention.

FIG. 2 is a flowchart illustrating the operation of the present invention.

[Explanation of symbols]

 1

Claims (3)

[Claims] 1. A main power supply circuit, a control microcomputer for controlling the operation of a device, a first light receiving section for receiving a control signal from a remote control transmitter, and a processing section for processing a control signal received by the first light receiving section. A second light receiving unit for receiving a control signal from the remote control transmitter, and a control receiving the control signal from the second light receiving unit. A main power supply control circuit that controls supply and cutoff of power from the main power supply circuit to the control microcomputer based on a signal; and a sub power supply circuit that supplies power to the main power supply control circuit. A remote control standby device for electronic equipment. 2. The remote control standby device for an electronic device according to claim 1, wherein the auxiliary power supply circuit includes a solar battery and a secondary battery charged by the solar battery. 3. A main power supply circuit, a control microcomputer for controlling the operation of the device, a first light receiving section for receiving a control signal from a remote control transmitter, and a control signal for processing the control signal received by the first light receiving section. A second light receiving unit for receiving a control signal from the remote control transmitter, and a control receiving the control signal from the second light receiving unit. A main power supply control circuit that controls supply and cutoff of power from the main power supply circuit to the control microcomputer based on the signal, and a solar battery and a secondary battery that is charged by the solar battery,
A sub-power supply circuit for supplying power to the main power supply control circuit; and a power supply from the sub-power supply circuit to the main power supply control control circuit when power is supplied from the main power supply circuit to the control microcomputer. And a sub-power supply control circuit for supplying power from the sub-power supply to the main power supply control circuit when the power is not supplied from the main power supply circuit to the control microcomputer. An electronic device remote control standby device.