JPH05260338A - Television receiver - Google Patents

Abstract

(57) [Abstract] [Purpose] To realize a television receiver that detects the consumption of the power supply battery of the remote control device and displays a warning message on the television screen. A remote control device 20a is provided with a voltage detection circuit 25 for detecting the operating voltage of a battery 24 and a warning signal transmission means 26 for generating a warning signal based on the detection result. When you operate any key on the keyboard 21,
The remote control signal generation processing unit 22a uses the battery 2
When the voltage of 4 decreases, a warning signal is added to the control code of the key and transmitted. When the video / audio receiver 1a receives this signal, the warning display means 10 gives a warning message to the video output circuit 5 and displays "Replace batteries" on the display section.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver controlled by a remote control device.

[0002]

2. Description of the Related Art Most of television receivers (hereinafter referred to as "televisions") that have been released in recent years are configured to be controlled by an operation section provided on the main body of the television receiver and an operation section of a remote control device. ing. Since the remote control device uses a built-in battery as a power source, if the battery is exhausted and the voltage drops, the operation becomes unstable.

A television including a conventional remote control device will be described. FIG. 3 is a block diagram showing the configuration of the main parts of the video / audio receiving device (television receiver main body) and the remote control device. In the figure, a video / audio receiver 1 includes an antenna 2 for receiving broadcast waves.
And a tuning circuit (tuner) 3 for tuning a radio wave of a specific channel among broadcast radio waves received by the antenna 2. The video signal processing circuit 4 is a circuit that demodulates the video signal output from the channel selection circuit 3, processes the luminance signal and the chrominance signal, and amplifies these signals. The video output circuit 5 is a circuit for applying a video signal output from the video signal processing circuit 4 to a display unit such as a CRT based on an input video control signal.

The audio signal processing circuit 6 is a circuit that demodulates the FM signal output from the tuning circuit 3 into an audio signal and amplifies it to a specified level. The audio output circuit 7 is a circuit that power-amplifies the audio signal from the audio signal processing circuit 6 based on the input volume control signal and outputs the amplified audio signal to an audio output unit such as a speaker.

On the other hand, the video / audio receiving apparatus 1 is provided with a remote control receiving circuit 8. The remote control receiving circuit 8 is a circuit that receives a signal modulated by infrared rays or the like from a remote control device described later and demodulates each control signal. The remote control signal processing unit 9 is a circuit that identifies each control code given from the remote control receiving circuit 8 and gives necessary control signals to, for example, the tuning circuit 3, the video output circuit 5, and the audio output circuit 7. Here, the remote control signal processing unit 9 is composed of a circuit including a microcomputer. The remote control signal processing section 9 supplies a signal for selecting a receiving station to the tuning circuit 3 and controls the audio output level and the image quality.

On the other hand, the remote control device 20 is
The operation of the video / audio receiving apparatus 1 is remotely controlled, and includes a keyboard 21, a remote control signal generation processing unit 22, a remote control transmission circuit 23, and a battery 24. The keyboard 21 is an operation unit including a plurality of operation keys. The remote control signal generation processing unit 22 is a circuit that includes a microcomputer and processes a key signal output from the keyboard 21 to generate a control code. That is, the remote control signal generation processing unit 22 sends the signal from the keyboard 21 to
Based on the standards of the Home Appliance Association, the data code and the continuous code are converted, and after sending the leader code, these signals are output to the remote control transmission circuit 23. Remote control transmission circuit 2
Reference numeral 3 is a circuit that modulates the control code from the remote control signal generation processing unit 22 and converts it into a transmission signal using, for example, an infrared light emitting diode. The battery 24 is the power source for all the circuit units included in the remote control device.

The operation of the conventional television receiver thus configured will be described. A television viewer operates the keyboard 21 of the remote control device 20 to increase the volume, for example. The remote control signal generation processing unit 22 detects that this key is pressed, and while the key is continuously pressed, the remote control transmission circuit 23
The volume data code and continuous code are output to. The infrared transmission signal output from the remote control transmission circuit 23 is received by the remote control reception circuit 8 of the video / audio reception device 1. Next, the remote control signal processing section 9 identifies the type of control code from the transmission signal, and if the signal is volume control, gives a volume control signal to the audio output circuit 7. In this way, the output is controlled to the volume intended by the user of the television.

[0008]

In such a conventional configuration, when the battery 24 of the remote control device 20 is exhausted, the operation thereof becomes uncertain even if various instructions are given to the video / audio receiving device 1. In this case, it is difficult for the viewer of the television to determine whether the video / audio receiving device 1 itself is out of order, the remote control device 20 is erroneously operated, or the battery 24 is exhausted, and it is troublesome. there were.

The present invention has been made in view of the above-mentioned conventional problems, and a television receiver capable of automatically indicating on a television screen that the battery of a remote control device has run out. The purpose is to provide.

[0010]

According to a first aspect of the invention of the present application, a remote control includes a keyboard for giving an instruction for each operation, a warning signal transmitting means for converting a signal of the keyboard into a control code and generating a warning signal. A remote control transmission circuit that modulates the output of the signal generation processing unit and the remote control signal generation processing unit into a transmission signal, a battery that supplies power to the remote control signal generation processing unit and the remote control transmission circuit, the operating voltage of the battery is detected, and the reference voltage is detected. In the following cases, a remote control device configured to include a voltage detection circuit that outputs a signal to a warning signal transmission means, a remote control reception circuit that receives a transmission signal of the remote control device, and a control demodulated by the remote control reception circuit Identify code and warning signal, and output warning message based on warning signal Remote control signal processor comprising a warning display unit that is one which is characterized by comprising a video audio receiving apparatus configured to include a.

According to the second aspect of the invention of the present application, the video / audio receiving device includes a non-volatile memory for holding the warning signal received from the remote control device, and the remote control signal processing section is provided in an external memory. It is characterized by having a memory control means for writing and reading a warning signal and giving the signal to the warning display means.

[0012]

According to the invention of claim 1 of the present application having such a feature, when the keyboard provided in the remote control device is operated to control the controlled object of the video / audio receiving device, the control corresponding to each operation is performed. Code is generated.
On the other hand, the voltage detection circuit detects the operating voltage of the battery that supplies the power of the remote control device, and if it is lower than the reference voltage, outputs a signal to the warning signal transmission means. The warning signal sending means adds a warning signal to the control code, and the remote control signal generation processing section gives this signal to the remote control transmission circuit. The remote control transmission circuit transmits the modulated transmission signal to the audiovisual receiver. Next, when the remote control receiving circuit receives the outgoing signal of the remote control device, the remote control signal processing section identifies each control code and checks whether or not there is a warning signal. When this warning signal is detected, the warning display means displays a warning message on the display unit.

According to the invention of claim 2 of the present application, in addition to the operation of claim 1, when a warning signal is received from the remote control device, this signal is held in the nonvolatile memory. Then, when the power of the video / audio receiving device is turned on without passing through the remote control device, the memory control means reads the warning signal stored in the external memory and gives a warning message to the video output circuit.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a main part of a television receiver including a remote control device and a video / audio receiving device. In the figure, the video / audio receiver 1a is provided with an antenna 2, a tuning circuit 3, a video signal processing circuit 4, a video output circuit 5, an audio signal processing circuit 6, an audio output circuit 7, and a remote control receiving circuit 8, respectively. That is the same as the conventional example, and the description thereof is omitted. Remote control signal processing unit 9a of the video / audio receiver 1a
Identifies the output signal of the remote control receiving circuit 8 and outputs a control signal to the channel selection circuit 3, the video output circuit 5, and the audio output circuit 7. Remote control signal processor 9a
Includes a warning display means 10 and a memory control means 11, and is constituted by a microcomputer.

When the remote control signal processing section 9a includes a warning signal in the various control signals input from the remote control receiving circuit 8, the warning display means 10 detects this signal and outputs a specific warning message to the video output circuit. 5 is given. Even if a warning signal is not input from the remote control receiving circuit 8, the same warning message is given to the video output circuit 5 if there is an instruction from the memory control means 11 described later. This warning message is stored in an internal memory (not shown) of the remote control signal processing section 9a.

On the other hand, the remote control signal processing section 9
The external memory 12 is connected to a. External memory 12
Is composed of a non-volatile memory, and once the warning signal is given to the remote control signal processing section 9a, the warning signal is stored. Memory control means 11
Controls the writing and reading of the external memory 12, and when the remote control receiving circuit 8 outputs a warning signal, the signal is stored in the external memory 12. When the power of the video / audio receiving apparatus 1a is turned on without using the remote control apparatus described later, the memory control means 11 checks the contents of the external memory 12, and if the warning signal is stored, reads the contents. And outputs it to the warning display means 10.

The remote control device 20a is provided with a keyboard 21 composed of a plurality of operation keys as in the conventional example. The keyboard 21 is an operation unit for giving various control instructions, and its output is given to the remote control signal generation processing unit 22a. The remote control signal generation processing unit 22a includes a microcomputer, processes a key signal output from the keyboard 21, and converts it into a reader code, a data code, and a continuous code based on the standard of the Home Appliance Association. It is a circuit that generates a control code. Unlike the conventional example, the remote control signal generation processing section 22a is provided with a warning signal sending means 26 described later.

On the other hand, the battery 24 is a power source for supplying electric power to all the circuit parts included in the remote control device 20a. The voltage detection circuit 25 is a circuit that detects a voltage drop in the battery 24, and is composed of, for example, a constant voltage diode and a voltage comparison circuit. The voltage of the battery 24 drops according to the discharge current and the discharge time. The reference voltage of the voltage detection circuit 25 is the lowest voltage at which the remote control device 20a operates in the normal directional state.

The warning signal sending means 26 is a voltage detecting circuit 2
When a signal indicating that the battery 24 has dropped below the reference voltage is input from 5, a warning signal is generated. This warning signal is generated so as to be added to this control code when converting each key signal operated by the keyboard 21 into each control code. Similar to the conventional example, the remote control transmission circuit 23 is a circuit that modulates the control code output from the remote control signal generation processing unit 22a, drives the light emitting diode, and emits infrared rays.

The operation of the thus-configured television receiver of this embodiment will be described. For example, when the power key of the remote control device 20a is operated to watch television, the remote control signal generation processing unit 22a generates a control code for the power key. At this time, if no signal is output from the voltage detection circuit 25, the warning signal transmission means 26 does not generate a warning signal, and a power-on control signal is transmitted from the remote control transmission circuit 23.

If the battery 24 is exhausted and this voltage becomes lower than the reference voltage, the voltage detection circuit 25 outputs a signal to the warning signal transmission circuit 26. If the current key operation is power-on, the remote control signal generation processing unit 22
a adds the warning signal from the warning signal sending means 26 to the control code for the power key. This signal is given to the remote control transmission circuit 23, and after sending the reader code,
A control code indicating a power supply signal and a warning signal are modulated as a transmission control signal, and are emitted as infrared rays through a light emitting diode.

Next, when the remote control receiving circuit 8 of the video / audio receiving device 1 receives this infrared ray, the remote control signal processing section 9a identifies the output signal of the remote control receiving circuit 8, and this signal is the control code of the power supply. For example, the video / audio receiver 1 is turned on. At this time, the remote control signal processing section 9a checks whether or not the demodulated control code includes a warning signal, and when the warning signal is detected, outputs the signal to the warning display means 10 and the memory control means 11. .. Next, the warning display means 10 gives a warning message to the video output circuit 5 based on the content of the warning signal. Figure 2
Shows an example in which the video output circuit 5 displays "Please replace the battery" on the display unit 13 such as a CRT. On the other hand, the memory control means 11 sends this warning signal to the external memory 1
Store in 2.

Next, consider a case where the television operating in this way is viewed and the power is temporarily cut off. When the viewer performs the same operation using the remote control device 20a, not only the power is turned on, but also various operations such as channel selection, volume control, selection of connected AV equipment, etc., the battery 24 If is exhausted, a similar warning signal is sent each time each control code is transmitted. When a person directly turns on the power by using the power switch of the video / audio receiver 1a to watch television, the remote control signal processing unit 9a stores a warning signal in the external memory 12. It is checked through the memory re-control means 12 whether or not it is present. If the warning signal is stored, the memory control means 11 reads the warning signal and gives the warning display means 10 the signal. Then, the video output circuit 5 displays a warning message on the display unit.

Now, when the battery 24 of the remote control device 20a is replaced and a voltage higher than the reference voltage is output, the voltage detection circuit 25 stops outputting a signal. At this time, the warning signal is not added to the control code, and if the remote control signal processing section 9a inputs the control code and does not detect the warning signal, the memory control means 11 erases the warning signal stored in the external memory 12. To do.

As described above, the voltage detection circuit 25 detects the voltage of the battery 24, and the remote control signal generation processing section 22a adds a warning signal to each control code to generate a control signal. Therefore, the television viewer can see the screen and know the battery consumption. Therefore, when the television does not operate stably, it is easy to determine what is the cause.

In this embodiment, the memory control means 11 and the non-volatile external memory 12 are provided in the video / audio receiver 1a, but these circuit parts may be omitted. Also in this case, when the battery 24 is exhausted, a warning signal is added and sent from the remote control device 20a, so that a warning message can be displayed on the display unit 13 of the television receiver every time a key is input.

[0027]

As described above in detail, according to the present invention, the remote control device is provided with the voltage detecting circuit for detecting the operating voltage of the battery, and the warning signal indicating the exhaustion of the battery is given as each control code of the signal of the keyboard. In addition, it is transmitted to the audiovisual receiver. For this reason, if the operation of the video / audio receiver becomes uncertain, whether the viewer of the television receiver has broken down, whether the video / audio receiver itself has malfunctioned, the remote control device has been operated incorrectly, or the battery has run down. Will be easier to judge. Further, when the battery is exhausted, a warning message is automatically displayed on the screen of the video / audio receiving device, and a television receiver with excellent usability can be realized.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a television receiver including a remote control device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of an operation of a remote control signal processing unit of this embodiment.

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

[Explanation of symbols]

 1a video / audio receiver 2 antenna 3 channel selection circuit 4 video signal processing circuit 5 video output circuit 6 audio signal processing circuit 7 audio output circuit 8 remote control receiving circuit 9a remote control signal processing unit 10 warning display means 11 memory control means 12 external memory 20a remote control device 22a remote control signal generation processing unit 23 remote control transmission circuit 24 battery 25 voltage detection circuit 26 warning signal sending means

Claims (2)

[Claims] 1. A remote control signal generation processing section including a keyboard for giving an instruction for each operation, a warning signal transmission means for converting a signal of the keyboard into a control code and generating a warning signal, and the remote control signal generation processing section. Remote control transmission circuit that modulates the output of the control signal into a transmission signal, a battery that supplies power to the remote control signal generation processing section and the remote control transmission circuit, and an operating voltage of the battery is detected. And a remote control device configured to include a voltage detection circuit that outputs a signal to each of the remote control device, a remote control reception circuit that receives a signal transmitted from the remote control device, and a control code and a warning signal demodulated by the remote control reception circuit. Warning table that outputs a warning message based on the warning signal Television receiver characterized by comprising the video audio receiving apparatus configured to include a remote control signal processing portion, a containing means. 2. The video / audio receiving device includes a non-volatile memory that holds the warning signal received from the remote control device, and the remote control signal processing unit sends a warning signal to the external memory. 2. The television receiver according to claim 1, further comprising a memory control means for writing and reading, and giving a signal to the warning display means.