JPH09252438A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm the residual capacity of a dry cell without enlarging a device by utilizing an analog/digital converter, detecting the residual capacity of the dry cell by a microcomputer and displaying it to a television receiver. SOLUTION: This television receiver is provided with the microcomputer 1 for controlling the television receiver, an ADC 2 being one function of the microcomputer 1, a socket 3 for setting the dry cell, a circuit 4 for synthesizing on-screen signals to video signals and a CRT 5. At the time of watching a television normally, since the dry cell is not set to the socket 3, a voltage inputted to the ADC 2 is 0 volt. In the case of checking the residual capacity of the dry cell in the middle of use, the dry cell is set to the socket 3. The voltage of the dry cell is inputted to the ADC 2 and the microcomputer 1 outputs a value corresponding to the voltage as the on-screen signals of red(R), green(G), blue(B) and switching signals. The R, G and B signals are synthesized with the video signals of the television receiver in a video signal processing circuit 4 and displayed on a CRT screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver having a built-in microcomputer and an on-screen display function.

[0002]

2. Description of the Related Art Conventionally, as a device capable of checking the residual capacity of an external power source, one described in the portable power source device of Japanese Utility Model Laid-Open No. 1-45454 is known.

Here, a conventional device will be briefly described. In FIG. 2, reference numeral 11 is a storage battery, 12 is a charge control circuit, 13 is a battery checker, 14 and 15 are changeover switches, 16 is an input socket, and 17 is a cigarette lighter socket.

In the conventional apparatus of FIG. 2, in addition to the basic components of the apparatus, a changeover switch for arbitrarily determining the remaining capacity of the battery and a dedicated battery checker were used.

[0005]

However, in the above structure, the changeover switch and the battery checker have to be provided separately.

Therefore, there has been a problem that the cost is increased by that amount and the device is enlarged. It is an object of the present invention to provide a residual capacity check device for an external power source, which does not require a changeover switch and a battery checker.

[0007]

In order to solve the above-mentioned problems, a television receiver of the present invention is an analog-digital converter (hereinafter referred to as an ADC) attached to a microcomputer controlling the television receiver. Abbreviated), the remaining capacity of the dry battery is detected by the microcomputer and is displayed on the screen of the television receiver.

According to the present invention, it is possible to obtain a means for easily knowing the remaining capacity of a dry battery without increasing the cost and without increasing the size of the device.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is a television receiver characterized in that the voltage of a dry battery can be confirmed by using an analog-digital converter, and the cost is increased. It is possible to obtain the means for knowing the remaining capacity of the dry battery without increasing the size of the device.

Further, the invention according to claim 2 of the present invention is
It has a built-in microcomputer with an analog-digital converter function, a socket in which dry batteries can be set, and a means for checking the voltage at both ends of the socket and transmitting it to the microcomputer, with the function of displaying the voltage at both ends of the socket on screen. This is a television receiver characterized by the above, and has an effect that a means for knowing the remaining capacity of the dry battery can be obtained without increasing the cost and without increasing the size of the device.

A television receiver according to an embodiment of the present invention will be described below with reference to FIG.

(Embodiment) FIG. 1 is a block diagram of a television receiver according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a microcomputer for controlling the operation of a television receiver, 2 is an ADC which is one function of the microcomputer, 3 is a socket for setting a dry battery, 4
Is a circuit for synthesizing an on-screen signal and a video signal, 5
Is a CRT.

Normally, when the television is being watched, the dry battery is not set in the socket 3, so that the voltage input to the ADC 2 is 0 volt.

When it is desired to check the remaining capacity of a dry battery in use because the remote control does not operate, the dry battery is set in the socket 3. The voltage of the set dry cell is AD
Input to C2.

The microcomputer 1 outputs a value corresponding to the input voltage as an on-screen signal of red (R), green (G), blue (B) and Ys (switching signal).

The R, G and B signals are supplied to the video signal processing circuit 4
And is combined with the video signal of the television receiver and displayed on the CRT screen.

According to this structure, by using the microcomputer with the built-in television receiver, it is possible to suppress the cost increase and to easily know the remaining capacity of the dry battery by the on-screen display without increasing the size of the device. Obtainable.

[0019]

As described above, according to the present invention, it is possible to obtain a means for easily knowing the remaining capacity of the dry battery without increasing the cost and without increasing the size of the device.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a television receiver according to an embodiment of the present invention.

FIG. 2 is a block configuration diagram of a conventional battery remaining capacity inspection device.

[Explanation of symbols]

 1 Microcomputer 2 ADC (Analog Digital Converter) 3 Socket 4 Video signal processing circuit 5 CRT

Claims (2)

[Claims] 1. A television receiver characterized in that the voltage of a dry battery can be confirmed by using an analog-digital converter of a microcomputer. 2. A built-in microcomputer having an analog-digital converter function, a socket in which a dry battery can be set, and means for checking the voltage at both ends of the socket and transmitting it to the microcomputer, the voltage at both ends of the socket being displayed on-screen. A television receiver having a display function.