KR20010060979A - Apparatus and method for controlling display power management of computer set - Google Patents

Abstract

PURPOSE: A DPM(Display Power Management) control system and method is provided to release a power reducing state of the DPM mode by sampling image signals and sensing a change of the image signals in the case that a monitor receives the image signal directly not by an input device after the user sets the DPM node at the computer. CONSTITUTION: The system comprises an input device(100), a personal computer(110), and a monitor(120). The personal computer(110) outputs RGB image signals and horizontal/vertical synchronization signals under a control of variable image decision signal or designated DMP mode. The monitor(120) displays the RGB image signals in synchronization with the horizontal/vertical synchronization signals, and controls the output of the horizontal/vertical synchronization signals by sensing a change of the RGB image signals and transmitting the variable image decision signals to the PC(110). The monitor(120) includes a AD converter(121), a microcomputer(122) and a video device(123). The micro computer(122) controls the display of the RGB image signals according to a transmission of the horizontal/vertical synchronization signals, and senses a level change of the image signals.

Description

Apparatus and method for controlling video power management of a computer system {APPARATUS AND METHOD FOR CONTROLLING DISPLAY POWER MANAGEMENT OF COMPUTER SET}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for controlling video power management of a computer system, and in particular, a user sets an image power management mode of a computer system and then inputs it through an input device. An image power management control device of a computer system configured to cancel a power saving mode of a DMP mode while the image signal is received by sampling the image signal and detecting a change in the image signal when the image signal is received by the monitor without; It is about a method.

In general, the DM mode detects whether a user inputs a signal through an input device for a certain period of time, thereby reducing power consumption of the computer system and operating the computer system in a power saving mode to prolong the life of the device. do.

1 is a block diagram showing a configuration of an embodiment of a conventional computer system, comprising: an input device 10 for inputting data for a user to execute or change a program as displayed therein; A predetermined PMP for storing and executing the data input through the input device 10 and displaying the image signals R, G, B, and the horizontal / vertical synchronization signal Hsync Vsync for displaying the same. A personal computer (hereinafter referred to as "PC") 20 which outputs according to the mode; And a monitor 30 for displaying the image signals R, G, and B in synchronization with the horizontal and vertical synchronization signals Hsync Vsync.

The PC 20 includes a storage device 21 for storing an execution program and a DM mode setting program; In addition to executing the stored program by accessing the storage device 21 by the input data of the input device 10, the image signal (R) (G) (B) and the horizontal / vertical according to the preset DM mode A central processing unit 22 for controlling the output of the synchronization signal Hsync Vsync; A video output unit for generating the image signal (R) (G) (B) and the horizontal / vertical synchronization signal (Hsync) (Vsync) under the control of the central processing unit 22 and outputs to the monitor (30) 23), and the monitor 30 receives the horizontal / vertical synchronization signal (Hsync) (Vsync) from the PC 20 to match the synchronization of the video signal (R) (G) (B) A microcomputer 31 for controlling a display operation; A video unit 32 for displaying the video signals R, G, and B under the control of the microcomputer 31 will be described in detail. .

When the user sets the DM mode through the input device 10 on the operating system of the PC 20, the central processing unit 22 in the PC 20 stores it in the storage device 21. Done.

Under the control of the CPU 22, the video output unit 23 generates a horizontal / vertical synchronization signal (Hsync) (Vsync) and an image signal (R) (G) (B) to monitor 30. The microcomputer 31 in the monitor 30 receives the horizontal / vertical synchronizing signal Hsync (Vsync) of the video output unit 23 and controls the video unit 32 in synchronization with it. Thus, the video signals R, G, and B are displayed.

At this time, the central processing unit 22 monitors 30 at the video output unit 23 if there is no input from the input device 10 during the power saving mode setting time of the DM mode stored in the storage device 21. It blocks the horizontal / vertical sync signal (Hsync) (Vsync) that is output to.

In addition, since the microcomputer 31 does not receive the horizontal / vertical synchronization signal Hsync (Vsync) from the PC 20, the microcomputer 31 transmits the image signal R (G) ( The operation of displaying B) is stopped and the power saving mode operation is performed.

As described above, when there is no input through the input device for a predetermined time after the user sets the power saving mode time of the PD mode, the monitor operates in the power saving mode because the horizontal / vertical synchronization signal is not output from the PC. When outputting a video signal such as a video in excess of the DMP power saving mode setting time without inputting the input device, manually canceling the power saving mode setting of the DMP mode or turning off the input device within the PMP power saving mode setting time. There was a problem in that unnecessary input should be applied.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems. When the user receives an image signal through a monitor without input through an input device after setting the DM mode of the computer system, the image signal is sampled. It is an object of the present invention to provide an apparatus and method for controlling video power management of a computer system to temporarily cancel a power saving mode setting of a DM mode while the video signal is received by detecting a change in the video signal.

1 is a block diagram showing an embodiment of a conventional computer system.

Figure 2 is a block diagram showing an embodiment configuration of a computer system to which the present invention is applied.

3 is a video signal sampling timing diagram of an analog / digital converter in FIG. 2;

4 is an operational flowchart of FIG.

Figure 5 is a block diagram showing the configuration of a computer system to which another embodiment of the present invention is applied.

*** Description of the symbols for the main parts of the drawings ***

100,200: input device 110,210: PC

111,124,211 Memory 112,213 Central Processing Unit

113,224: Video output unit 120,220: Monitor

121,212: Analog-to-Digital Converters 122,221: Microcomputers

123,222 Video

The configuration of the present invention for achieving the above object is provided with an Algibi video signal provided with a central processing unit for controlling the output of the horizontal / vertical synchronization signal according to the variable image discrimination signal from the monitor when the time setting of the PMP power saving mode And a PC for outputting a horizontal / vertical synchronization signal; Outputting the horizontal / vertical sync signal of the PC by displaying an ALGBI video signal in synchronization with the horizontal / vertical sync signal from the PC, and detecting a change in the video signal and applying a variable image discrimination signal to the PC. Characterized in that configured to monitor the control.

In addition, the present invention provides a method comprising: a first step of sampling a video signal twice by setting different delay times in a vertical synchronization signal of each frame when the DM mode is set, and then comparing the two values; If the two values are the same as the determination result of the first step, determining that the image is a still image and performing a power saving mode operation in the DM mode and terminating it; If the two values are not the same as the result of the determination in the first step, it is determined that the video or motion screen is a third step of repeating the operation of the first step after canceling the PDM power saving mode characterized in that it comprises a .

In addition, the configuration of another embodiment of the present invention includes a PC for outputting the ALG video signal and the horizontal / vertical synchronization signal according to the variable image discrimination signal generated by detecting the change of the video signal when the time setting of the DM power saving mode; And a monitor for displaying an ALG video signal in synchronization with the horizontal / vertical synchronization signal.

Hereinafter, with reference to the accompanying drawings, the operation and effect of an embodiment of the present invention will be described in detail.

2 is a block diagram showing a configuration of an embodiment of a computer system to which the present invention is applied; an input device 100 for inputting data for executing or changing a program by a user as displayed thereon; The image signal R (G) (B) and the horizontal / vertical synchronization signal (Hsync) (Vsync) for changing and executing a program and displaying the same by the input of the input device 100 are variable image discrimination signals. Or PC 110 for outputting under control of a preset DM mode; By synchronizing with the horizontal / vertical synchronizing signal (Hsync) (Vsync), the image signals (R) (G) (B) are displayed and the change of the image signals (R) (G) (B) is sensed. The monitor 120 is configured to control the output of the horizontal / vertical synchronization signal Hsync (Vsync) of the PC 110 by applying a variable image discrimination signal to the PC 110.

In addition, the PC 110 includes a storage device 111 for storing an execution program and a DM mode setting program; In addition to executing the stored program by accessing the storage device 111 by the input data of the input device 100, the image signal (R) (G) (B) and horizontal / Controls the output of the vertical sync signal (Hsync) (Vsync), and when the time setting for the DM power saving mode is reached, the horizontal / vertical sync signal (Hsync) (Vsync) and the image according to the variable image discrimination signal applied from the monitor 120 A central processing unit (112) for controlling the output of the signals (R) (G) and (B); A video output unit for generating the image signal (R) (G) (B) and the horizontal / vertical synchronization signal (Hsync) (Vsync) under the control of the central processing unit 112 and outputs to the monitor 120 ( 113, wherein the monitor 120 comprises: an analog / digital converter 121 for converting and outputting an image signal R into a digital signal by a control signal from a microcomputer 122; The display operation of the image signals R, G, and B is controlled according to whether the horizontal / vertical synchronization signal Hsync Vsync is applied, and the image signal R is controlled through the analog / digital converter 121. Sampling aperiodically from the vertical synchronization signal Vsync to have different delay times D1 and D2 to detect the level change of the image signal R, so that the horizontal / vertical synchronization signal of the PC 110 A microcomputer (122) for outputting said variable image discrimination signal for controlling the output of Hsync) (Vsync); And a video unit 123 for displaying the image signals R, G, and B under the control of the microcomputer 122. FIG. This will be described in detail with reference to 3 and FIG. 4.

The operation when the user sets the DM mode through the input device 100 on the operating system of the PC 110 operates in the same manner as in the prior art. That is, the central processing unit 112 receiving the input is stored in the storage device 111, and then output to the monitor 120 through the video output unit 113, the input monitor 120 is a microcomputer ( A horizontal / vertical sync signal Hsync (Vsync) is detected at 122, and the video signals R, G, and B are displayed through the video unit 123 in synchronization with the horizontal and vertical sync signals Hsync.

In this case, the central processing unit 112 outputs a DM mode signal, and the microcomputer 122 receives the analog / digital signal to be delayed by a delay time D1 in the vertical synchronization signal Vsync as shown in FIG. 3. After sampling the video signal R input through the converter 121, the video signal through the analog / digital converter 121 to be delayed by the same delay time (D1) in the vertical synchronization signal (Vsync) of the next frame Sample (R) and compare with previous value.

In addition, as shown in FIG. 3, the microcomputer 122 inputs an image signal R, which is delayed by a delay time D2, from the vertical synchronization signal Vsync through the analog / digital converter 121 to each frame. After sampling twice, the two values are compared.

Therefore, the microcomputer 122 controls the control signal to the analog / digital converter 121 aperiodically to have a different delay time from the vertical synchronization signal Vsync in order to detect a change in a part of the entire image display area. After sampling each point of the video signal (R) over the entire row (twice) twice, the sampling values at each point are compared with each other to determine that the image is the same as a still image, but It is judged that it is a video or motion screen.

In addition, when there is no input from the input apparatus 100 in excess of the set DM power saving mode time, the central processing unit 112 according to the variable image discrimination signal from the microcomputer 122 inside the monitor 120. It is determined whether the screen displayed by the image signals R, G, and B output to the monitor 120 is a still picture or a moving picture.

Therefore, when the image signal R (G) (B) output from the PC 110 to the monitor 120 according to the variable image discrimination signal from the microcomputer 122 inside the monitor 120 is a still image, The CPU 112 performs an operation corresponding to the DMP power saving mode.

That is, the central processing unit 112 blocks the horizontal / vertical synchronization signal Hsync (Vsync) output from the video output unit 113 to the monitor 120, so that the microcomputer 122 is connected to the video unit. The operation of the operation 123 is stopped and the power saving mode is operated.

However, if the video signals R, G, and B output from the video output unit 113 are moving or moving screens even in a part of the entire image display area, the center received the signals through the variable image discrimination signal. The processing device 112 releases the DMPO power saving mode.

Accordingly, the video output unit 113 under the control of the central processing unit 112 sends a horizontal / vertical sync signal (Hsync) (Vsync) and an image signal (R) (G) (B) to the monitor (120). The microcomputer 122 displays the image signals R (G) (B) through the video unit 123 in synchronization with the horizontal / vertical synchronization signal Hsync (Vsync).

Afterwards, when the moving picture or the moving screen stops, the microcomputer 122 that detects this outputs a variable image discrimination signal, and the central processing unit 112 that receives the input signal performs the PDM power saving mode operation again. do.

5 is a block diagram showing a configuration of a computer system to which another embodiment of the present invention is applied, and as shown therein, an input device 200 for inputting data for a user to execute or change a program; Outputs a video signal (R) (G) (B) and a horizontal / vertical sync signal (Hsync) (Vsync) for changing and executing a program and displaying the program by the input of the input device 200, and A PC 210 for blocking the horizontal / vertical synchronization signal Hsync Vsync by detecting a change in the image signal G when the M mode is set; The monitor 220 displays the image signals R, G, and B in synchronization with the horizontal / vertical synchronization signal Hsync Vsync.

The PC 210 includes a memory device 211 for storing an execution program and a DM mode setting program; An analog / digital converter (212) for converting and outputting a video signal (G) into a digital signal by a control signal from the central processing unit (213); In addition to executing the stored program by accessing the storage device 211 by the input data of the input device 200, the image signal (R) (G) (B) and the horizontal / vertical synchronization signal in accordance with the set DM mode In controlling the output of (Hsync) (Vsync), after detecting the level change of the image signal (G) through the analog / digital converter 212 to generate a variable image discrimination scene according to the level change of the image signal, Accordingly, the central processing unit 213 for controlling the output of the horizontal / vertical synchronization signal (Hsync) (Vsync); And a video output unit 214 for generating and outputting the image signals R, G, and B and a horizontal / vertical synchronization signal Hsync Vsync under the control of the central processing unit 213. The monitor 220 includes a microcomputer 221 which receives the horizontal / vertical synchronization signal (Hsync) (Vsync) and controls the display operation of the image signals (R) (G) (B) in synchronization with the horizontal / vertical synchronization signal (Hsync); And a video unit 222 for displaying the image signals R, G, and B under the control of the microcomputer 221. The operation process of another embodiment of the present invention configured as described above is described in detail. Explain.

The central processing unit 213, which has received the user's setting of the DM mode through the input device 200 on the operating system of the PC 210, stores it in the storage device 211, and then the video output unit 224. The monitor 220 outputs the monitor 220 through the monitor 220, and the monitor 220 receives the horizontal / vertical synchronization signal Hsync (Vsync) from the microcomputer 221 and synchronizes the image to the image through the video unit 222. Display signals R (G) (B).

In this case, the central processing unit 213 inputs an image signal input in a vertical sync signal Vsync section (one vertical sync section consists of one screen, that is, one frame) in order to detect a change in a part of the entire image display area. A control signal is output to the analog / digital converter 212 so as to sample (G) aperiodically.

Accordingly, the CPU 213 outputs a control signal having a different delay time to the analog / digital converter 212 and samples each point twice over the entire row, and compares the sampled values of each point. If it is the same value, it is determined as a still image, but if it is not the same value, it is determined as a video or motion screen.

If there is no input from the input device 200 in excess of the set DM power saving mode time, the CPU 213 may perform the video signal R based on a comparison value of a signal obtained by sampling the video signal G. If (G) (B) is a still picture, an operation corresponding to the PDM power saving mode is performed.

That is, the central processing unit 213 blocks the horizontal / vertical synchronization signal Hsync (Vsync) output from the video output unit 214 to the monitor 220, so that the microcomputer 221 is the video unit. Operation 222 is interrupted and the power saving mode is operated.

However, if the video signal R (G) (B) output from the video output unit 214 is a moving picture or a moving screen even in a part of the entire video display area, the central processing unit 112 may output a variable video discrimination signal. After the generation, the video output unit 214 transmits the horizontal / vertical synchronization signal (Hsync) (Vsync) and the image signal (R) (G) (B) by releasing the PMP power saving mode accordingly. The microcomputer 221 displays the image signals R, G and B through the video unit 222 in synchronization with the horizontal and vertical synchronization signals Hsync and Vsync. do.

Afterwards, when the moving picture or the moving screen is stopped, the CPU 213 detecting the moving picture performs a decode power saving mode operation again.

As described in detail above, according to the present invention, after the user detects a change in the image signal by aperiodically sampling the image signal output from the PC when setting the DM power saving mode, the image signal is reached when the DM power saving mode is set. By controlling the output of the horizontal / vertical synchronization signal according to whether there is a change, the display of the image signal can be performed without unnecessary input and interruption through the input device.

Claims (9)

A PC for outputting an ALGBI image signal and a horizontal / vertical synchronization signal, having a central processing unit for controlling the output of the horizontal / vertical synchronization signal according to the variable image discrimination signal when the DC power saving mode is set; And a monitor configured to display an ALGBI video signal in synchronization with the horizontal / vertical sync signal and to detect a change in the video signal to control the output of the horizontal / vertical sync signal of the PC. Video power management control device of the system. The apparatus of claim 1, wherein the monitor comprises: an analog / digital converter for converting and outputting an image signal into a digital signal by a control signal; A variable that controls the display operation of the ALGBI video signal according to whether the horizontal / vertical sync signal is applied or not, and detects the level change of the video signal through the analog / digital converter to control the output of the horizontal / vertical sync signal of the PC. A microcomputer for outputting an image discrimination signal; And a video unit for displaying the AlgiVie video signal under the control of the microcomputer. 3. The apparatus of claim 2, wherein the analog-to-digital converter is configured to sample one of the Al-Gibi video signals under control of a microcomputer. 3. The method of claim 2, wherein the microcomputer samples the video signal aperiodically to have a different delay from the vertical synchronization signal through an analog / digital converter in order to detect a change in a certain portion of the entire video display area. Video power management control device of computer system. A PC for detecting a change in the video signal and outputting an ALGBI video signal and a horizontal / vertical synchronization signal when the PDM power saving mode is set; And a monitor configured to display an ALGBI video signal in synchronization with the horizontal / vertical synchronization signal. 6. The apparatus of claim 5, wherein the PC comprises: a memory device for storing an execution program and a PM program; An analog / digital converter for converting and outputting an image signal into a digital signal by a control signal; A central processing unit for controlling the output of the horizontal / vertical synchronization signal and the Algivy image signal by detecting the level change of the video signal through the analog / digital converter when the memory device is accessed and the DM is set; And a video output unit configured to generate and output the algibi video signal and a horizontal / vertical synchronization signal under the control of the central processing unit. 7. The apparatus of claim 6, wherein the analog-to-digital converter is configured to sample one video signal of an ALGBI video signal under control of a central processing unit. The apparatus of claim 6, wherein the central processing unit samples the video signal aperiodically to have a different delay from the vertical synchronization signal through an analog / digital converter in order to detect a change in a certain portion of the entire video display area. Image power management control device of a computer system. A first step of sampling a video signal twice each time so as to have a different delay time from the vertical synchronization signal of each frame when the DM mode is set, and comparing the two values; If the two values are the same as the determination result of the first step, determining that the image is a still image, and performing and ending a DM mode operation; If the two values are not the same as the result of the determination of the first step, the computer comprises a third step of repeating the operation of the first step after canceling the DM mode by determining that the video or motion screen Video power management control method of system.