KR19990000495A - A method of automatically turning off a television at non-broadcast time and an apparatus for performing the same. - Google Patents

Abstract

Method of automatically turning off the television in non-broadcasting time that can be detected and automatically turned off when the power of the television is continuously switched on for a certain time at a time other than the broadcasting time of the television and for performing the same. An apparatus is disclosed. When the viewer turns on the power of the television, the image of the broadcast program received through the antenna is displayed on the screen. When the broadcast time is over while watching the television, the image signal is not displayed on the screen, so the signal detection unit detects it and applies it to the microcomputer. The microcomputer counts the time when the video signal is not displayed on the screen, and if the video signal is not displayed continuously for a set time, the user presses a random button when the television is continuously displayed on the screen. If a signal is not input from any button afterwards, the power supply can be turned off to prevent unnecessary power consumption.

Description

Method for automatically turning off television at non-broadcast time and apparatus for performing the same

The present invention relates to a method and apparatus for automatically turning off a television, and more particularly, when the power of the television is continuously switched on for a predetermined time at a time other than the broadcast time of the television, the power is automatically detected and automatically turned on. The present invention relates to a method for automatically turning off a television during off-broadcast times and an apparatus for performing the same.

In general, a television receives a broadcast signal transmitted from each broadcast station through an antenna to display a broadcast corresponding to a screen. The video of an object photographed by a camera at a broadcast station is converted into a video signal, and the video signal is a constant high frequency signal. It transmits through a transmit antenna. The high frequency signal transmitted through the transmitting antenna is received through a receiving antenna installed in each home and applied to the television. The high frequency signal received by the television is converted to a predetermined intermediate frequency through a tuner circuit unit, and then amplified into a signal having a constant size in the intermediate frequency amplification unit, and the image signal and audio signal detectors detect the video signal and the audio signal, respectively. After the step, the video signal is applied to the screen of the receiving tube through the demodulation circuit and displayed, and the audio signal is output through the speaker. In this case, when the user selects a broadcast channel to receive through a television using a channel conversion switch, a program of a corresponding broadcasting station is displayed on the screen.

The image signal displayed on the screen is demodulated into a signal suitable for display in the demodulation circuit unit and applied to the electron gun of the receiving tube. The electron gun generates an electron beam, and the electron beam is generated on the RGB color provided in the fluorescent film of the screen through the grid and the deflection unit. Is displayed by touching. In other words, the electron beam generated by the electron gun is controlled by four grids, the focus point and focus of the projection toward the fluorescent film of the screen, and the electron beam passing through the grid is pulled by the high voltage anode voltage provided on the screen, Projected. The electron beam projected toward the screen by the anode voltage is deflected in the horizontal direction and the vertical direction while passing through the deflection portion to reach the RGB color of the fluorescent film. When it touches the RGB color of the fluorescent film, the part hit by the electron beam emits light, so that an image is displayed on the screen. At this time, the electron beam accurately reaches the RGB color of the fluorescent film by focus adjustment, and the desired color is clearly displayed.

Using a television having such a function, the viewer often sleeps while watching a broadcast of a desired channel at night. When the viewer sleeps while watching television, there is a problem in that the power of the television is kept on even after the broadcast time is over, which shortens the life of the television and wastes unnecessary power.

The present invention has been made to solve the above problems, the first object of the present invention is to detect and automatically switch on the power of the television for a certain time at a time other than the broadcast time of the television automatically The present invention provides a method for automatically turning off a television during non-broadcast times when the power can be turned off.

It is also a second object of the present invention to provide an apparatus for automatically turning off a television during a non-broadcast time, which is suitable for carrying out the method of automatically turning off the power of the television in the non-broadcast time.

1 is a block diagram schematically showing an apparatus for automatically turning off a television at non-broadcast time according to the present invention.

2 is a flowchart illustrating a method of automatically turning off a television at non-broadcast time according to the present invention.

Explanation of symbols on the main parts of the drawing

10: microcomputer 12: tuner circuit

14: intermediate frequency amplifier 16: voice signal processing unit

18: video signal processor 20: video signal amplifier

22: A / V switching unit 24: demodulation circuit unit

26: video signal detector 28: the water pipe

30: power supply

In order to achieve the first object, the present invention includes a first step of determining whether an image signal is detected; A second step of repeating the first step if the video signal is detected in the first step and counting time if the video signal is not detected; A third step of determining whether a time set after the second step has elapsed; A fourth step of repeatedly executing the first step if the time set in the third step has not elapsed and generating an OSD mode signal if the set time elapses; A fifth step of generating a character by pressing any button when the television is continuously watched after the fourth step; A sixth step of judging whether a signal is input from any button after the fifth step; A seventh step of repeating the first step if a signal is input from any button in the sixth step, and counting time if a signal is not input from any button; An eighth step of determining whether a time set after the seventh step has elapsed; And repeatedly executing the sixth step if the time set in the eighth step has not elapsed, and turning off the power if the set time has elapsed. .

In order to achieve the second object of the present invention, a tuner circuit unit for converting a high frequency signal of a desired channel from a high frequency signal applied through an antenna into an intermediate frequency that is easy to amplify; An intermediate frequency amplifier unit connected to the tuner circuit unit and amplifying the intermediate frequency applied from the tuner circuit unit to a size suitable for displaying on a water pipe; An image signal processor connected to the intermediate frequency amplifier and configured to detect and process a video signal from the intermediate frequency amplifier; A voice signal processor connected to the intermediate frequency amplifier and configured to detect and process a voice signal from the intermediate frequency amplifier; An A / V switching unit connected to the video signal processing unit and the audio signal processing unit to switch the video signal and the audio signal applied from the video signal processing unit and the audio signal processing unit; A video signal amplifier connected to the A / V switching unit and amplifying the video signal applied from the A / V switching unit; A demodulation circuit unit connected to the video signal amplifier and demodulating the video signal applied from the video signal amplifier to be suitable for being displayed on the water pipe; An image signal detection unit connected between the A / V switching unit and a demodulation circuit unit and detecting whether an image signal is applied to the demodulation circuit unit from the A / V switching unit; And connected to the video signal detector, and comparing the received signal from the video signal detector to determine the video signal if the video signal is not detected for a predetermined time, and applying an OSD mode signal to the demodulation circuit, and controlling the power supply to the on or off state. Provided is an apparatus for automatically turning off a television during a non-broadcast time composed of a microcomputer.

According to the present invention, when the viewer switches on the power of the television, an image of the broadcast program received through the antenna is displayed on the screen. When the broadcast time is over while watching the television, the image signal is not displayed on the screen, so the signal detection unit detects it and applies it to the microcomputer. The microcomputer counts the time when the video signal is not displayed on the screen, and if the video signal is not displayed continuously for a set time, the user presses a random button when the television is continuously displayed on the screen. If a signal is not input from any button afterwards, the power supply can be turned off to prevent unnecessary power consumption.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a block diagram schematically showing an apparatus for automatically turning off a television at non-broadcast time according to the present invention.

Referring to FIG. 1, a device for automatically turning off a television during a non-broadcast time is described. A high frequency signal applied through an antenna is applied to the tuner circuit unit 12, and the tuner circuit unit 12 is applied through an antenna. Select the high frequency signal of the desired channel from the signal and convert it to the intermediate frequency that is easy to amplify. An intermediate frequency amplifier 14 is connected to the tuner circuit 12, and the intermediate frequency amplifier 14 has a size suitable for displaying the intermediate frequency applied from the tuner circuit 12 on the water pipe 28. Amplify.

The video signal processor 18 and the audio signal processor 16 are connected to the intermediate frequency amplifier 14, and the audio signal processor 16 detects and processes the audio signal from the intermediate frequency amplifier 14. The video signal processor 18 detects and processes the video signal from the intermediate frequency amplifier 14.

An A / V switching unit 22 is connected to the video signal processing unit 18 and the audio signal processing unit 16, and the A / V switching unit 22 is an image signal processing unit 18 and an audio signal processing unit 16. The video signal and the audio signal applied from the switch are output. An image signal amplifier 20 is connected to the A / V switching unit 22, and the image signal amplifier 20 amplifies an image signal applied from the A / V switching unit 22 to demodulate a circuit 24. ) Is applied. A demodulation circuit 24 is connected to the video signal amplifier 20, and the demodulation circuit 24 is demodulated to be suitable for displaying an image signal applied from the video signal amplifier 20 on the receiving tube 28. And output to the water pipe (28).

An image signal detection unit 26 is connected between the A / V switching unit 22 and the demodulation circuit unit 24, and the image signal detection unit 26 is connected to the demodulation circuit unit 24 from the A / V switching unit 22. It detects an image signal applied to. A microcomputer 10 is connected to the image signal detector 26, and the microcomputer 10 receives a signal applied from the image signal detector 26 and compares and determines that the image signal is not detected for a predetermined time. ) And the power supply unit 30.

According to the present invention, a high frequency signal received through an external antenna is applied to the tuner circuit unit 12, and the tuner circuit unit 12 converts the high frequency signal applied through the antenna to an intermediate frequency. An intermediate frequency amplifier 20 is connected to the tuner circuit 12, and the intermediate frequency amplifier 14 amplifies an intermediate frequency applied from the tuner circuit 12. The video signal processor 18 and the audio signal processor 16 are connected to the intermediate frequency amplifier 14, and the audio signal processor 16 detects and amplifies the audio signal from the intermediate frequency amplifier 14. The image signal processor 18 detects an image signal from the intermediate frequency amplifier 14 and applies the image signal to the image signal amplifier 20. The video signal amplifier 20 amplifies the video signal and applies it to the A / V switching unit 22. The A / V switching unit 22 applies the video signal to the demodulation circuit unit 24.

Since the video signal applied from the A / V switching unit 22 to the demodulation circuit unit 24 is an RGB signal as a color signal and a Y signal as a luminance signal, between the A / V switching unit 22 and the demodulation circuit unit 24. The connected image signal detector 26 may detect whether an image signal is applied to the demodulation circuit 24 from the A / V switching unit 22.

The video signal detection unit 26 detects whether a video signal is applied to the demodulation circuit unit 24 from the A / V switching unit 22 in the state that the power of the television is switched on, and applies it to the microcomputer 10. The microcomputer 10 determines that the signal is detected from the video signal detector 26 to be in a normal state to maintain the current operating state, and the signal from which the video signal is not detected from the video signal detector 26. If is applied, it is determined to be abnormal and counts time.

That is, the microcomputer 10 counts the time immediately when a signal from which the video signal is not detected from the video signal detector 26 is counted, and determines whether the counted time exceeds the set time. The microcomputer 10 applies an OSD signal to the demodulation circuit unit 24 so that an OSD screen is displayed on the receiving tube 28 when a signal from which the image signal is not detected from the image signal detection unit 26 is applied for a predetermined time. At the same time, if you watch TV continuously on the OSD screen of the water pipe 28 is displayed a letter to press any button. After displaying a character on the OSD screen of the water pipe 28, it is determined whether a signal is applied from any button, and if any button is input within a set time, it is determined to be in a normal state to maintain the current state.

On the contrary, if a signal is not applied from any button within the set time, it is determined as an abnormal state and the power is switched off.

2 is a flowchart illustrating a method of automatically turning off a television at non-broadcast time according to the present invention.

Referring to FIG. 2, a method of automatically turning off a television during non-broadcasting time, it is determined whether a video signal is detected in the on-switched state of the television (step S100). That is, the image signal detector 26 detects an image signal generated from the A / V switching unit 22 and applies it to the microcomputer 10.

If the video signal is detected in step S100, step S100 is repeatedly executed. If the video signal is not detected, time is counted (step S110). When the video signal detection unit 26 receives a signal for which no video signal is detected, the time is immediately counted.

It is determined whether the time set after the step S110 has elapsed (step S120); The video signal detector 26 counts the time when the video signal is not detected, and determines whether the video signal is not detected for the set time.

If the time set in step S120 has not elapsed, step S100 is repeatedly executed, and if the set time elapses, an OSD mode signal is generated (step S130). If a signal from which the image signal is not detected continuously is applied from the image signal detection unit 26 for a predetermined time, an OSD screen is displayed on the receiving tube 28 through the demodulation circuit unit 24.

If the television continues to be watched after step S130, press any button to generate a character (step S140). When the television is continuously watched on the OSD screen displayed in the water pipe 28, a character of pressing any button is displayed so that the viewer can recognize it.

It is determined whether a signal is input from any button after step S140 (step S150). That is, the viewer recognizes the characters displayed on the OSD screen of the water pipe 28 and determines whether the user inputs a signal within a set time using an arbitrary button.

If a signal is input from any button in step S150, step S100 is repeatedly executed, and if a signal is not input from any button, the time is counted (step S160). That is, when the television is continuously watched on the OSD screen of the water pipe 28, a character of pressing any button is displayed and the time is counted to determine whether the signal is applied within the set time.

It is determined whether the time set after step S160 has elapsed (step S170). If the time set in step S170 has not elapsed, the sixth step S150 is repeatedly executed, and if the set time elapses, the power is turned off (step S180). That is, in step S180, since a character is not inputted from a button within a predetermined time after displaying a character on the OSD screen of the water pipe 28 and counting the time, it is determined that a person is not watching the television, thereby powering the television. By turning off, unnecessary power is wasted.

As can be seen from the above description, when the viewer switches the power of the television on, the image of the broadcast program received through the antenna is displayed on the screen. When the broadcast time is over while watching the television, the image signal is not displayed on the screen, so the signal detection unit detects it and applies it to the microcomputer. The microcomputer counts the time for which the video signal is not displayed on the screen, and if the video signal is not displayed continuously for a predetermined time, the microcomputer may turn off the power and prevent unnecessary power consumption.

Claims (3)

A first step (S100) of determining whether an image signal is detected; A second step (S110) of repeating the first step (S100) if the image signal is detected in the first step (S100) and counting time if the image signal is not detected; A third step (S120) of determining whether a time set after the second step (S110) has elapsed; A fourth step (S130) of repeatedly executing the first step (S100) if the time set in the third step (S120) has not elapsed and generating an OSD mode signal if the set time has elapsed; A fifth step (S140) of generating a text by pressing any button when the television is continuously watched after the fourth step (S130); A sixth step (S150) determining whether a signal is input from any button after the fifth step (S140); A seventh step (S160) of repeating the first step (S100) if a signal is input from any button in the sixth step (S150), and counting time if a signal is not input from any button; An eighth step S170 of determining whether a time set after the seventh step S160 has elapsed; And If the time set in the eighth step S170 has not elapsed, the sixth step S160 is repeatedly executed, and if the set time has elapsed, the television is turned off during the non-broadcasting time. How to turn off automatically. A tuner circuit unit 12 for converting a high frequency signal of a desired channel from a high frequency signal applied through an antenna into an intermediate frequency for easy amplification; An intermediate frequency amplifier unit 14 connected to the tuner circuit unit 12 and amplifying an intermediate frequency applied by the tuner circuit unit 12 to a size suitable for displaying on a water pipe; An image signal processor (18) connected to the intermediate frequency amplifier (14) for detecting and processing an image signal from the intermediate frequency amplifier (14); A voice signal processor (16) connected to the intermediate frequency amplifier (14) for detecting and processing a voice signal from the intermediate frequency amplifier (14); An A / V switching unit 22 connected to the video signal processor 18 and the audio signal processor 16 and switching the video and audio signals applied from the video signal processor 18 and the audio signal processor 16; ); A video signal amplifier 20 connected to the A / V switching unit 22 and amplifying the video signal applied from the A / V switching unit 22; A demodulation circuit section 24 connected to the video signal amplifier 20 for demodulating the video signal applied from the video signal amplifier 20 to be suitable for being displayed on the water tube; An image signal detection unit 26 connected between the A / V switching unit 22 and the demodulation circuit unit 24 and detecting whether an image signal is applied to the demodulation circuit unit 24 from the A / V switching unit 22. ; And A non-comb that is connected to the image signal detection unit 26 and receives a signal applied from the image signal detection unit 26 to compare and determine that the image signal is not detected for a predetermined time, the power supply unit 30 is switched off. A device that automatically turns off the television during broadcast time. The display of claim 2, wherein the microcomputer 10 displays an OSD screen on the receiving tube 28 through the demodulation circuit 24 when the signal detected by the image signal detector 26 is not applied for a predetermined time. A device for automatically turning off a television during non-broadcasting time, characterized in that a character of pressing a button is displayed when the television is continuously watched.