JPH08287545A - Remote controller - Google Patents

Abstract

PURPOSE: To report the timing of battery exchange a little earlier by displaying the battery exchange on a display part, for which frequency to be watched by a user is comparatively higher than a liquid crystal display part, at the main body of a VTR. CONSTITUTION: When the value of a voltage V of a power source battery 2 gets less than 1V, a low voltage detection circuit 3 outputs a low voltage detect signal S1 and adds it to an operating instruction signal S2 inputted from an operating part 5. Then, that signal is inputted to a main body 9 of the VTR and a battery exchange mark 14 is displayed on a display part 12 together with operating mode mark counter display.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device effectively used as a remote controller for remotely controlling various electric devices.

[0002]

2. Description of the Related Art Video tape recorders (hereinafter referred to as VTRs)
,) Is attached with a remote control for remote control. Recently, some remote controls have a liquid crystal display so that users can check recording reservations, etc., and this LCD has a display to inform the user when it is time to replace the battery built into the remote control. Some do.

A conventional remote control device having a battery consumption display function will be described below. FIG. 3 is a block diagram showing the configuration of a conventional remote control device. In FIG. 3, 21
Is the remote control body, 22 is two AA batteries (1.5V x 2
= 3V), a low-voltage detection circuit 23 outputs a low-voltage detection signal S1 when the voltage V of the power-supply battery 22 drops below a certain value (for example, 1V), and 24 indicates reproduction and fast-forward / rewind. An operation unit for issuing commands and reserved recording settings and outputting the respective operation command signals S2 to the control unit 26. Reference numeral 25 denotes a low-voltage detection signal S1 output from the low-voltage detection circuit 23 for displaying battery consumption, and an operation unit. 24
A liquid crystal display unit for displaying the preset recording setting information set by the reference numeral 27, the operation command signal S2 inputted from the control unit 26 is converted into an optical signal, and the VTR main body (not shown).
Is a light emitting unit for transmitting to.

The operation of the conventional remote control device configured as described above will be described below. When performing a reproduction or fast forward / rewind instruction, the user operates the operation unit 24 so that the operation instruction signal S2 is changed to the control unit 26.
Is input to the light emitting unit 27 via. The operation command signal S
2 is converted into an optical signal by the light emitting unit 27 and is input to the VTR main body to perform an operation corresponding to the operation command signal S2.

Further, when the reserved recording is performed, the operation section 24 is operated to input the reservation contents (recording date and time, channel, etc.). The reservation information is input to the control unit 26 and also to the liquid crystal display unit 25. Based on the reservation information displayed on the liquid crystal display unit 25, the user sets the reservation recording while watching the display. When the setting is completed, the operation unit 24
By pressing a decision button (not shown) provided in the light emitting section 27, the reserved recording information is converted into the operation command signal S2.
Is transmitted from the VTR to the main body of the VTR, and the preset recording setting is completed.

As described above, when the remote control is used for various operations for a long time, the voltage V of the power supply battery 22 gradually decreases, and eventually the minimum voltage (0.5) necessary for normal operation is reached.
V), and you cannot operate the VTR with the remote control.
Therefore, in order to promptly inform the user of the replacement time of the power supply battery 22, the voltage value of the power supply battery 22 is detected, and the voltage V becomes 1
A low voltage detection circuit 23 that outputs a low voltage detection signal S1 when the voltage becomes V or less is provided. The voltage V of the power supply battery 22 is 1V
When the low voltage detection circuit 23 inputs the low voltage detection signal S1 to the liquid crystal display unit 25 as described below, the liquid crystal display unit 25 displays the battery replacement mark 28 as shown in FIG.

[0007]

However, in the above-mentioned conventional configuration, the battery replacement mark 28 is displayed on the liquid crystal display section which the user rarely sees except when the reserved recording is set. There was a problem that it could not be used during operation and eventually could not be sent.

Further, in order to reduce the cost and power consumption of the remote controller, if the remote controller does not have a liquid crystal display unit, the battery replacement cannot be displayed and the power cannot be transmitted until the transmission is disabled. There was also a problem that it was not possible to confirm the consumption of the battery. The present invention, in view of the above problems,
A VTR that is more frequently viewed by the user than a liquid crystal display
An object of the present invention is to provide a remote control device that displays a battery replacement indication on the display unit of the main body and informs the user of the battery replacement time early.

[0009]

In order to solve the above problems, a remote control device of the present invention is a remote control device capable of remotely controlling a controlled device, and includes a power supply battery and a voltage of the power supply battery. Low voltage detection circuit that detects that the voltage has become lower than a predetermined voltage value and outputs a low voltage detection signal, an operation unit that performs various operations and outputs an operation command signal corresponding to the operation, and an operation command signal A control unit that outputs a signal to which a low-voltage detection signal is added, and a light emitting unit that converts the signal output from the control unit into an optical signal and outputs the optical signal to the controlled device are provided. The controlled device is provided with a light receiving unit for receiving light and a display unit for displaying a battery replacement when a low voltage detection signal is added to the signal received by the light receiving unit.

[0010]

With the above structure, the battery replacement display is displayed on the display section of the controlled device, so that the user can be informed earlier of the battery replacement time.

[0011]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the remote control device of this embodiment. In FIG. 1, 1 is a remote controller main body, 2 is a power supply battery composed of two AA dry batteries (1.5V × 2 = 3V), and 3 is a voltage V of the power supply battery 2 lower than a certain value (for example, 1V). The low-voltage detection circuit 4 that sometimes outputs the low-voltage detection signal S1 includes a control unit 5 that adds the low-voltage detection signal output from the low-voltage detection circuit 3 to the operation command signal output from the operation unit 5, and outputs the operation command signal. Is an operation unit that outputs a respective operation command signal S2 to the control unit 4 by performing a reproduction / fast forward / rewind command and reserved recording setting, and 6 is a liquid crystal display that displays setting information of the reserved recording set by the operation unit 5. And 7 are operation command signals S input from the control unit 4.
A light emitting portion for converting 2 into an optical signal and transmitting it to a VTR main body (not shown), 9 for the VTR main body, 10 for a light receiving portion for receiving the optical signal transmitted from the light emitting portion 7, and 11 for a light receiving portion 10. A control unit that divides the received signal S3 into a low voltage detection signal and an operation command signal, and 12 indicates a battery replacement mark, an operation mode display, a counter display, etc. based on the low voltage detection signal and the operation command signal output from the control unit 11. Display section that displays
A signal processing unit 13 operates based on the operation command signal.

The operation of the remote control device of the present invention constructed as above will be described below. When performing a reproduction or fast-forward / rewind command, the user operates the operation unit 5 to input the operation command signal S2 to the light emitting unit 7 via the control unit 4. The operation command signal S2 is converted into an optical signal by the light emitting unit 7, and the light receiving unit 1 of the VTR main body 9 is converted.
Take 0. The received signal is input from the control unit 11 to the display unit 12 and the signal processing unit 13. The display section displays the operation mode and the counter display, and the signal processing section operates based on the operation command signal.

When the reserved recording is performed, the operation unit 5 is operated to input the reservation contents (recording date and time, channel, etc.). The reservation information is input to the control unit 4 and
It is also input to the liquid crystal display unit 6. Based on the reservation information displayed on the liquid crystal display unit 6, the user sets the reservation recording while watching the display. When the setting is completed, by pressing an enter button (not shown) provided on the operation unit 5, the reserved recording information is transmitted from the light emitting unit 7 to the VTR main body 9 and the reserved recording is set.

As described above, when the remote controller 1 is used for various operations for a long time, the voltage V of the power source battery 2 is gradually lowered to the minimum voltage (0.5 V) required for normal operation. Then, the VTR cannot be operated remotely. Therefore, the low voltage detection circuit 3 is provided, and the control unit 4 is provided in order to notify the user that it is time to replace the battery when the voltage V of the power supply battery 2 becomes 1 V or less, which is a predetermined voltage value.
The low voltage detection signal S1 is output to the control unit 4 and the control unit 4 holds the low voltage detection signal S1 until the operation command signal S2 is input from the operation unit 5. Then, the user operates the operation unit 5
When the operation command signal S2 is input to the control unit 4 by operating, the signal S3 obtained by adding the low voltage detection signal S1 to the operation command signal S2 is output to the light emitting unit 7. The signal S3 is converted into an optical signal by the light emitting unit 7 and transmitted to the VTR main body 9. The optical signal output from the light emitting unit 7 is received by the light receiving unit 10, and the control unit 1
1 is input. The control unit 11 inversely converts the signal received by the light receiving unit 10 into a low voltage detection signal and an operation command signal.
The low voltage detection signal is input to the display unit 12 together with the operation command signal, and the battery replacement mark 14, the operation mode mark 15 and the counter 16 as shown in FIG. 2 are displayed. In addition, the operation command signal is also input to the signal processing unit 13 to perform an operation based on the operation command.

Battery replacement mark 1 displayed on the display unit 12
No. 4, once displayed, continues to be displayed until an operation command signal that does not include the low voltage detection signal is input next. Then, the user confirms the battery replacement mark 14 to replace the battery, and when the voltage V of the power supply battery 2 becomes 1 V or higher, the low voltage detection signal S1 is not generated.
The signal transmitted to 9 is only the operation command signal. Therefore, since the signal input to the display unit 12 is only the operation command signal, the battery replacement mark 14 displayed on the display unit 12 disappears.

As described above, according to the present embodiment, when the value of the voltage V of the power supply battery 2 becomes 1 V or less, the low voltage detection circuit 3 outputs the low voltage detection signal S1 and the operation unit 5 inputs it. The operation command signal S2 is added to the VTR main body 9 and is input to the VTR main body 9 to display the battery replacement mark 14 on the display unit 12, thereby promptly informing the user that transmission cannot be performed due to the voltage drop of the power supply battery 2. Is something that can be done.

In the present embodiment, the detection voltage of the low voltage detection circuit 3 is set to 1V and the voltage of the power supply battery 2 is set to 3V, but it goes without saying that other values may be set.

[0018]

As described above, according to the present invention, the low voltage detection circuit outputs a low voltage detection signal when the value of the voltage of the power supply battery becomes equal to or lower than a predetermined value, and the operation input from the operation unit is performed. By adding it to the command signal and inputting it to the VTR main body and displaying the battery replacement mark on the display unit, it is possible to promptly inform the user that transmission cannot be performed due to the voltage drop of the power supply battery. Further, even in the case of a remote controller that does not have a liquid crystal display unit in order to pursue cost reduction and power saving, it is possible to confirm the battery replacement time.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a remote control device of the present invention.

FIG. 2 is a partially enlarged view of a display portion of a VTR main body in the same embodiment.

FIG. 3 is a block diagram showing a configuration of a conventional remote control device.

FIG. 4 is a partially enlarged view of a liquid crystal display section of a conventional remote control device.

[Explanation of reference numerals] 2 power supply battery 3 low voltage detection circuit 4 control unit 5 operation unit 6 liquid crystal display unit 12 display unit

Claims (1)

[Claims] 1. A remote control device capable of remotely controlling a controlled device, which detects a power supply battery and a voltage of the power supply battery lower than a predetermined voltage value and outputs a low voltage detection signal. A low-voltage detection circuit, an operation unit that performs various operations and outputs a first operation command signal corresponding to the operation, and a second operation command signal in which the low-voltage detection signal is added to the first operation command signal. And a second control for controlling to display a battery replacement on the display unit of the controlled device when the low voltage detection signal is added to the second operation command signal output from the control unit. And a signal output section for outputting the operation command signal of 1. to the signal input section of the controlled device.