KR100365972B1 - Display device and method for controlling the same - Google Patents

Abstract

PURPOSE: A display device and a method for controlling the same are provided to recognize the current time and date while a PC is operated using a function key mounted on a monitor without inputting a command or executing a program. CONSTITUTION: A monitor key signal is received(S10). It is judged whether the current mode is a power saving mode(S20). If the current mode is a power saving mode, an OSD(On Screen Display) is not output on a CRT and the operation is terminated(S30). If the current mode is not a power saving mode, an OSD(On Screen Display) is output on the CRT and an OSD output time is initialized(S40). The OSD output time is increased as a predetermined output time(S50). It is judged whether the increased OSD output time is greater than a setting value and a release key is inputted. If the increased OSD output time is less than the setting value and a release key is not inputted, the current stage is returned to the above (S50) stage(S60,S70). If the increased OSD output time is greater than the setting value and a release key is inputted, an OSD output is terminated(S80).

Description

A Display Apparatus and A Control Method of that

The present invention relates to a display device and a control method thereof, and more particularly, to a display device having a monitor key for knowing the current time and date, and a control method thereof.

Modern times is the era of PC information, which uses PC communication, LAN, and other word programs to create the necessary information. At this time, when the user wants to know the current time or date during the PC work, the current time and date can be known using the time and date functions supported in the DOS state or the window state.

Conventional display devices include an OSD (On Screen Display) that displays information on display settings when a user selects a function button mounted on the monitor in a normal operation state other than a power saving mode. ) Has the function.

The power saving mode refers to a power saving mode among the operation modes of the power supply unit in the display device, which is a state in which any one of the horizontal and vertical synchronization signals is not output.

The function button allows the user to check and adjust the horizontal size, horizontal position, brightness, contrast, current input signal frequency, user list and preset timings of the screen.

The OSD is displayed for about 10 seconds after the adjustment is completed with the selected function button.

However, the conventional display device is troublesome that the time and date functions supported in the DOS state or the window state are performed only when a user writes a command or executes a program.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned problems, and provides a display apparatus and a display control method for reducing the trouble of inputting a command or executing a program when the current time and date are to be known. There is this.

Still another object of the present invention is to provide a display apparatus and a display control method which allow the user to know the current time and date by using a function key mounted on the monitor even during a PC operation.

1A-1B are circuit diagrams of a display device according to an embodiment of the present invention;

2 is a flowchart illustrating a display control method according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10: monitor key input unit 20: monitor control unit

30: OSD gain section 40: horizontal / vertical blanking section

50: OSD conversion unit 60: contrast adjustment unit

70 clamp portion 80 horizontal blanking portion

90: first image amplifier 100: second image amplifier

110: brightness adjustment unit 120: vertical blanking unit

130: CRT

According to a feature of the present invention proposed to achieve the above object, the display device includes a monitor key input unit for outputting a signal received from the monitor key; A monitor controller which receives predetermined information for OSD display from a host and outputs an OSD signal corresponding to the information in response to an input of the monitor key input unit; An OSD gain section for outputting a control signal for determining a maximum output of the OSD signal; A horizontal / vertical blanking section for forming a blanking time in the video area and outputting a control signal to cause the OSD to be displayed thereon; An OSD converter which receives respective control signals from the OSD gain unit and a horizontal / vertical blanking unit, receives the OSD signal, and outputs an OSD conversion signal corresponding thereto; A contrast adjuster for outputting a control signal for determining a video gain operating point; A clamp unit configured to receive a horizontal synchronization signal and output a control signal in synchronization with the video signal to facilitate amplification of the video signal; A horizontal blanking unit for outputting a horizontal blanking control signal; A first image amplifier for receiving respective control signals from the contrast adjusting unit, the clamp unit, and the horizontal blanking unit, receiving the amplified OSD signal, and outputting a primary amplified signal; A second image amplifier configured to receive and amplify the first amplified signal and output a second amplified signal; A brightness controller for changing a video cutoff level to output a brightness control signal of the back raster; A vertical blanking unit for outputting a vertical blanking signal; And a CRT configured to receive and display the second amplified signal, the brightness control signal, and the vertical blanking signal.

In a preferred embodiment of this aspect, the monitor control unit is composed of a microcomputer device.

In a preferred embodiment of this feature, the monitor control unit receives information on a current time and date stored in the ROM BIOS of the host.

According to another aspect of the present invention, a monitor key input unit and a monitor control unit, an OSD gain unit, a horizontal / vertical blanking unit, an OSD converting unit, first and second image amplifiers, a contrast adjusting unit and a clamp unit, A display control method of a display apparatus including a horizontal blanking unit and a brightness adjusting unit, a vertical blanking unit and a CRT includes: (1) receiving a monitor key signal; (2) determining whether it is a power saving mode; (3) terminating the operation without outputting an OSD to the CRT in the power saving mode in (2); (4) outputting an OSD to the CRT and initializing an OSD output time when the power saving mode is not in the (2) above; (5) increasing the OSD output time by a predetermined output time; (6) When it is determined whether the increased OSD output time is greater than or equal to a set value and a release key is input, and when the increased OSD output time is less than a set value and the release key is not input, (5) Proceeding to; And (7) ending the OSD output when the increased OSD output time is equal to or greater than a set value or when the release key is input.

The display device according to the present invention allows the user to know the current time and date simply by pressing the monitor key in the normal state, not in the power saving mode.

(Example)

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1A to 1B and FIG. 2.

1A to 1B are circuit diagrams of a display device according to an embodiment of the present invention.

2 is a flowchart illustrating a display control method of a display apparatus according to an exemplary embodiment of the present invention.

Referring to FIGS. 1A to 1B and FIG. 2, a display control method of a display apparatus for allowing a current time and date to be known through an OSD display is as follows.

First, when a user who wants to know the current time and date presses a monitor key that is a function button, the monitor control unit 20 configured as a micom receives a monitor key signal from the monitor key input unit 10 (S10).

The monitor controller 20 receives information on a current time and date for the OSD display from a host ROM BIOS using a specific pin of a signal cable, and monitor key input unit 10. The OSD signal corresponding to the information is output to the OSD converter 50 in synchronization with the OSD clock through the OSD data line in response to an input of.

The OSD converting section 50 includes an OSD gain section 30 for determining the maximum output of the OSD signal, and a horizontal / vertical display for forming the blanking time in the video area so that the OSD is displayed thereon. Each control signal is input from the blanking unit 40, and the OSD conversion signal corresponding to the OSD signal is received through the R-OSD and G-OSD and B-OSD terminals. Output to.

The first image amplifier 90 receives a horizontal synchronizing signal with a contrast adjusting unit 60 that outputs a control signal for determining a video gain operating point as a video preamp, and synchronizes with the video signal. Each control signal is input from a clamp unit 70 for smoothly amplifying a video signal and a horizontal blanking unit 80 having a horizontal blanking function, and the OSD conversion signal is amplified by amplifying the primary amplified signal. The R-OSD and the G-OSD and the B-OSD terminal output the second image amplifier 100.

The second image amplifier 100 receives the first amplified signal and amplifies the second amplified signal and outputs the second amplified signal to the CRT 130 through R-OUT and G-OUT, and B-OUT, which are output terminals. In this case, the CRT 130 includes a brightness adjusting unit 110 for outputting a brightness control signal of a back raster by changing a video cut-off level, and vertical blanking for outputting a vertical blanking signal. The brightness control signal and the vertical blanking signal are respectively received from the unit 120 and displayed.

At this time, the monitor control unit 20 determines whether the power saving mode (S20), in the power saving mode, that is, if none of the horizontal / vertical synchronization signal is output, the OSD to the CRT (130) The operation is terminated without output (S30).

However, when the power saving mode is not used, that is, when the horizontal / vertical synchronization signals are simultaneously output, the OSD is output to the CRT 130 and the OSD output time is initialized (S40).

Next, the OSD output time is increased by a predetermined output time (S50).

In addition, it is determined whether the increased OSD output time is equal to or greater than a set value, and it is determined whether the release key is input, and when the increased OSD output time is less than a set value and the release key is not input, the OSD output time. To proceed to step (S50) to increase the operation by a predetermined output time (S60, S70).

However, when the increased OSD output time is more than a set value or when the release key is input, the OSD output is terminated (S80).

The display device and display control method described above apply the OSD function used to adjust the existing display state so that the current time and date can be known. By using the monitor key, the trouble of writing a command or executing a program can be reduced. have.

The present invention solves the inconvenience of having to write a command or execute a program in a DOS state or a window state in order to know the current time and date, and the present time and date without writing a command or executing a program. It is effective to easily know the current time and date with the OSD displayed on the CRT using the monitor key during PC operation.

Claims (4)

In the display device, A monitor key input unit 10 for outputting a signal input from the monitor key; A monitor control unit 20 which receives predetermined information for OSD display from a host and outputs an OSD signal corresponding to the information in response to an input of the monitor key input unit 10; An OSD gain section 30 for outputting a control signal for determining a maximum output of the OSD signal; A horizontal / vertical blanking unit 40 for forming a blanking time in the video area and outputting a control signal to cause the OSD to be displayed thereon; An OSD converter (50) for receiving respective control signals from the OSD gain unit (30) and the horizontal / vertical blanking unit (40), receiving the OSD signal, and outputting an OSD conversion signal corresponding thereto; A contrast adjusting unit 60 for outputting a control signal for determining a video gain operating point; A clamp unit 70 which receives a horizontal synchronization signal and outputs a control signal in synchronization with the video signal to facilitate amplification of the video signal; A horizontal blanking unit 80 for outputting a horizontal blanking control signal; A first image amplifier which receives respective control signals from the contrast adjusting unit 60, the clamp unit 70, and the horizontal blanking unit 80, receives and amplifies the OSD conversion signal, and outputs a primary amplified signal 90; A second image amplifier 100 which receives the first amplified signal and amplifies and outputs a second amplified signal; A brightness adjusting unit 110 for changing a video cutoff level to output a brightness control signal of the back raster; A vertical blanking unit 120 for outputting a vertical blanking signal; And a CRT (130) for receiving and displaying the second amplified signal, the brightness control signal, and the vertical blanking signal. The method of claim 1, The monitor control unit (20) is configured as a microcomputer device. The method of claim 1, The monitor controller (20) is characterized in that for receiving information on the current time and date stored in the ROM BIOS of the host. Monitor key input unit 10 and monitor control unit 20, OSD gain unit 30, horizontal / vertical blanking unit 40, OSD converting unit 50, and first and second image amplifiers 90 , 100, a contrast adjusting unit 60 and a clamp unit 70, a horizontal blanking unit 80 and a brightness adjusting unit 110, a vertical blanking unit 120 and a CRT 130. Control method, (1) receiving a monitor key signal (S10); (2) determining whether it is a power saving mode (S20); (3) terminating the operation without outputting the OSD to the CRT (130) in the power saving mode in (2); (4) outputting an OSD to the CRT 130 and initializing an OSD output time when it is not in the power saving mode in (2) (S40); (5) increasing the OSD output time by a predetermined output time (S50); (6) When it is determined whether the increased OSD output time is greater than or equal to a set value and a release key is input, and when the increased OSD output time is less than a set value and the release key is not input, (5) Proceeding to (S60, S70); And (7) terminating the OSD output when the increased OSD output time is equal to or greater than a set value or when the release key is input.