KR20000039840A - Method for controlling tv screen in stop mode of video cd player - Google Patents

Abstract

PURPOSE: A method for controlling a TV screen in the stop mode of a video CD player is provided to protect the pixel of a TV bran tube and to reduce consuming electricity by displaying the screen as black and by turning off the electric power in case of not operating any operation for a certain period by the stop mode of the video CD player. CONSTITUTION: A playing back mode is operated through a video CD player by the supply of electric power. Then, the establishment of a stop mode is decided while operating the playing back mode. If the stop mode is established, the TV screen is displayed as black. Herein, a timer operates a counting operation after displaying the black screen for blocking the TV electricity after an established period. The screen has been displayed as blue or green while changing from the playing back mode to the stop mode of the video CD player. However, the screen is displayed as block for protecting a certain pixel and for preventing waste of electricity by turning off the electric power of the TV after a certain period.

Description

How to control TV screen in pause mode in video CD player

The present invention relates to a method of controlling a TV screen in a stop mode in a video CD player. More specifically, when the video CD player is stopped and no operation is performed for a predetermined time, the screen is displayed in black and then the power is turned off. The present invention relates to a control method of a still mode TV screen in a video CD player, which can reduce power consumption and protect pixels.

With the development of audio and video media, optical disc players have been developed for recording and reproducing video and audio data on semi-permanent optical discs.

Such an optical disc player reproduces an image and / or an audio recorded on an optical disc and outputs it through a screen and / or a speaker, and has a higher signal-to-noise ratio than conventional image and / or audio reproducing apparatus, resulting in better image quality and / or Alternatively, it can reproduce signals with sound quality, generates no noise due to irregular playback and modulation, very low distortion, no ghost (GHOST), random access, and many other advantages. There is a trend of development and widespread use.

Such optical disc players also include compact disc players (CDPs), laser disk players (LDPs) and compact disc graphics players (CDGPs), and video compact disc players (VCDPs). It has been developed and widely used, such as vidos compact dist player, or recently, a digital video disk (DVD) and a digital video disk player for reproducing the MPEG-2 video using compression technology have been developed. It can record and play back gigabytes (GB) of data, including moving images, on a 12cm optical disc such as a CD. It is also designed to be compatible with current CDs and VCDs.

Here, the video CD player is composed of an optical system, a motor drive system and a signal system. In other words, the data engraved on the pit of the compact disc is irradiated through the optical signal, and is read out by using the light quantity difference of the beam returned by the irradiated beam.

On the other hand, such a video CD player is usually connected to the TV to display the screen information read through the TV. The current video CD player outputs a blue or green video signal through the TV in stop mode.

However, if the fixed screen is continuously displayed in the still mode of the conventional video CD player, the pixel life of the TV screen connected to the video CD player may be shortened by that amount or the TV may be damaged.

Accordingly, the present invention has been invented to solve the above problems, and when the video CD player is stopped and no operation is performed for a certain time, the screen is displayed in black and the power is also turned off to protect the pixels of the TV tube. In addition, the purpose of the video CD player is to provide a still mode TV screen control method to reduce the power consumption.

In order to achieve the above object, the present invention includes the steps of (a) performing a playback mode through the video CD player as the power is supplied; (B) determining whether the stop mode is set during the reproducing mode in this step (a); (C) displaying the TV screen in black when it is determined in the step (b) that the stop mode is set in the playback mode; In step (c), the screen is displayed in black, and as the counter reaches the set time by the counting operation of the timer, the TV power is cut off.

1 is a block diagram illustrating a still screen TV screen protection operation in a video CD player according to the present invention.

2 is a flowchart illustrating a TV screen control method according to the present invention.

<Explanation of symbols for main parts of drawing>

10: key input unit 20: micom

30: timer 40: video encoder

50: power control unit

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

The TV system to which the present invention is applied includes a key input unit 10 for inputting a signal for performing a player or a stop mode as shown in FIG. 1, and a signal input from the key input unit 10 to perform a corresponding control. The microcomputer 20, the timer 30 for counting the time in the stop mode under the control of the microcomputer 20, and the control signal of the microcomputer 20 when the predetermined time count of the timer 30 is completed. The video encoder 40 displaying the TV screen in black and the power control unit 50 which cuts off the power of the TV by receiving the timer 30 from the timer 30 when the screen black time has elapsed under the control of the microcomputer 20. Is made of.

Meanwhile, the operation of establishing a TV screen in a video CD player having such a configuration is as follows.

First, the user turns on the power through the key input unit 10, and then reads the data normally recorded on the video CD through the play button, and encodes the read signal through the video encoder 40 to input the TV's input stage. Will print The TV processes the input video and audio signals by itself, and the video recorded on the video CD is reproduced by the CRT.

At this time, if the user sets the mode of the video CD player to the stop mode through the key input unit 10, the corresponding signal is input to the microcomputer 20. At this time, the microcomputer 20 applies a predetermined control signal to the video encoder 40 and a predetermined control signal to the timer 30.

Accordingly, the video encoder 40 applies a video signal obtained by processing the screen to black as a TV. Therefore, a black screen is output to the TV's CRT.

In addition to the above operation, the timer 30 counters the current time. At this time, if the TV maintains the black state for the set time, that is, if the signal according to the mode conversion is not input to the microcomputer 20 within the set time, the microcomputer 20 sends a predetermined control signal to the power controller 50. Is authorized. The power supply control unit 50 is the TV power is cut off by applying a control signal according to the power off.

On the other hand, the control method according to the operation as shown in Figure 2, the initial state (S1) is connected to the video CD player and the TV proceeds to the power supply step (S2) for supplying power to each device. Then, in this power supply step S2, driving power is supplied to each device, and the process proceeds to the normal regeneration step S3. In the normal reproducing step (S3), the reproducing operation of the video and audio is performed according to the user's reproducing mode selection, and the processing proceeds to the stop mode determining step (S4). Therefore, when it is determined in the stop mode determination step S4 that the video CD player is set to the stop mode, the process proceeds to the black screen display step S5.

At this time, in the black screen display step S5, the TV screen is displayed in black and the timer operation step S6 is performed. Therefore, in this timer operation step S6, the timer operation is performed after the black screen display operation and the process proceeds to the set time determination step S7. At this time, if it is determined in the set time determining step (S7) that the counting operation according to the operation of the timer is within the set time, the flow proceeds to the timer operation step (S6) and continuously performs the timer operation. If it is determined that the operation exceeds the set time, it proceeds to a power cut step (S8) to cut off the power of the TV and end the present loop.

As described above, in the present invention, when the video CD player goes from the play mode to the stop mode, the existing screen is displayed in blue or green color, but the black screen is used to protect certain pixels and to maintain the predetermined time at the black screen display time. If the time elapses, the TV power is randomly turned off, thereby preventing unnecessary power consumption.

Claims (1)

Performing a playback mode via the video CD player as power is supplied (a); (B) determining whether the stop mode is set during the reproducing mode in this step (a); (C) displaying the TV screen in black when it is determined in the step (b) that the stop mode is set in the playback mode; In step (c), the screen is displayed in black, and then the TV is turned off when the counter reaches the set time due to the counting operation of the timer. Way.