KR0174153B1 - How to adjust your monitor's screen - Google Patents

Abstract

The present invention relates to a method of adjusting a screen of a display monitor. In this method, it is determined whether or not to allow the user to select an option when power is supplied to the monitor, And automatically determines whether there is a necessity of screen adjustment according to the detection result of the input frequency, and automatically displays the screen control information according to a predetermined sequence when it is determined that there is a necessity of screen adjustment, Allows you to perform screen adjustments.

Description

How to adjust your monitor's screen

FIG. 1 is a circuit diagram showing a circuit configuration of a typical monitor screen adjusting device. FIG.

FIGS. 2A and 2C are flowcharts showing a preferred embodiment of a monitor screen adjustment method according to the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

1: cathode tube 2: deflection circuit

10: video amplifying unit 20:

31: Microprocessor 32: Keypad

33: digital-to-analog converter 34: OSD video generator

35: Preamplifier 36: Main amplifier

37: Multiplexer

[Industrial Applications]

The present invention relates to a method of adjusting a screen pattern of a display monitor for displaying information of a host such as a computer on a screen.

[Prior art and its problems]

In a monitor having various signal timing modes, the size, position, geometric distortion, and the like of a display image or a display pattern displayed on the screen are determined by a horizontal synchronization, Vertical synchronization and timing of video signals. The timing of the input signals is determined by the video card and its display mode mounted on the computer.

In order to obtain an appropriate screen pattern according to the timing change of the input signals as described above, the manufacturer generally selects the timing mode of the monitor product, that is, the frequency band of the input signal, (E.g., the size and position of the screen and the geometric distortion information according to each mode) in a predetermined order between a maximum frequency and a minimum frequency of the selected frequency band in a memory (usually a microprocessor or an internal memory , Which is referred to as a 'factory preset mode setting', and a memory area in which screen control information is stored is referred to as a 'factory mode area'. The manufacturer adjusts the monitor to a standard screen pattern according to its model and ships it.

In order to correct the distortion of the screen pattern, that is, the size, the position, the geometric distortion, etc., the user usually uses a control panel on the front of the monitor. When a user presses a corresponding key pad provided in the front control panel, the current screen state is displayed on an OSD (On Screen Display) The user performs screen adjustment while viewing the control information displayed on the screen.

FIG. 1 schematically shows the configuration of a typical screen adjusting device of a cathode ray tube (CRT) monitor. 1, the cathode ray tube monitor includes a cathode ray tube 1 for displaying an image, and an electron beam control unit for controlling the deflection of electron beams in the cathode ray tube 1, And a deflection circuit (2). 1, the monitor screen adjusting apparatus comprises a video amplifying section 10 for amplifying a video signal (R, G, B video) provided from a host computer and outputting the amplified video signal to the cathode ray tube 1, And a control unit 20 for controlling the deflection circuit 2 and the video amplification unit 10 by storing the screen control information and the given options corresponding to the given timing mode and using the stored screen control information and options . The controller 20 controls the keypad 32, the digital-to-analog converter 33, and the OSD 32 in the microprocessor (or microcomputer) 31 that performs the screen adjustment in response to the user's instruction in the timing mode of the input signal. A video generator 34 is connected. The microprocessor 31 receives the horizontal synchronizing signal HSYNC and the vertical synchronizing signal VSYNC from the host and detects the frequency of the input signal and supplies the screen control information and clock corresponding to the detected frequency to the digital- Converter 33 and the OSD video generator 34, respectively. The digital-to-analog converter 33 is driven by a clock signal output from the microprocessor 21 to convert digital screen control information signals for control of screen size, position, geometric distortion, video gain, and video cutoff to analog signals Respectively. The analog screen size control signal DSC, the position control signal DPC and the geometric distortion control signal GDC output from the digital-to-analog converter 23 are provided to the deflection circuit 2 and the video gain control signals R-Gain, G-Gain and B-Gain are provided to a pre-amplifier 35 and video cutoff control signals R-Cutoff, G-Cutoff and B- main amplifier 36 is provided. The R, G, and B video signals output from the computer are sequentially amplified by the preamplifier 35 and the main amplifier 36 and provided to the cathode ray tube 1. A multiplexer 37 is disposed between the preamplifier 35 and the main amplifier 36. An input of the multiplexer 37 is connected to an OSD video signal (R_OSD, G_OSD, B_OSD), and the other input terminals thereof receive the output signals of the preamplifier (35). The multiplexer 37 multiplexes the OSD video signals R_OSD, G_OSD and B_OSD according to the OSD enable signal OSD_EN outputted from the OSD video generator 34 and the R, G, B video And outputs the selected signal to the main amplifier 36.

While the monitor is operating, the microprocessor 31 detects the frequency of the current input signal and finds screen control information corresponding to the detected frequency. At this time, if the screen control information related to the frequency is stored, the microprocessor 31 makes an appropriate screen display according to the information. On the other hand, if the screen control information related to the frequency is not stored, the microprocessor controls the screen display according to the screen control information related to the nearest frequency. In this case, the screen patter is usually biased toward one side, Some are transformed.

The adjusted screen control information is stored in the internal memory of the microprocessor 31. This is referred to as a 'user mode setting' and a memory area in which screen control information is stored is referred to as a 'user mode area user mode area ').

As described above, conventionally, if the screen control information coinciding with the timing of the input signal, that is, the frequency of the input signal, does not exist in both the factory mode area and the user mode area of the memory, It is not difficult for a user who is unfamiliar with the use of the monitor to perform screen adjustment without referring to the user manual of the monitor. In particular, due to the limitation of the size of the front control panel, the number of keypad pads is usually smaller than the number of screen adjustment functions (horizontal and vertical size, horizontal and vertical position, trapezoid, left-right bend, tilt control, etc.). Accordingly, a plurality of functions are realized by pressing several key pads simultaneously or in a predetermined order. In such a case, not only the unskilled user but also the master user suffers difficulty in adjusting the functions.

On the other hand, the monitor includes various options that the user can select according to the model, for example, a language, an OSD screen holding time, an OSD screen position, and a function of selecting a color temperature of the screen These are provided to the user in a standard form by the manufacturer. When the monitor is used for the first time, the above-mentioned options are generally changed according to the preference of the user, and these are performed in the monitor itself as functions provided separately from the display mode of the host or the computer. It is also not easy for unskilled users to find and select these options individually for the reasons stated.

[Object of the Invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an intelligent monitor screen adjustment method capable of performing monitor screen adjustment by anyone.

SUMMARY OF THE INVENTION [

According to an aspect of the present invention for achieving the above object, there is provided a display apparatus including a video amplifier for amplifying a video signal provided from a host, a display controller for storing screen control information corresponding to each of the given timing modes and given options, And a control unit for controlling the deflection circuit and the video amplifier unit by using the deflection circuit and the options. A method of adjusting a screen of a monitor in which a user performs a screen adjustment in response to an instruction in a timing mode of an input signal, comprising: A first step of checking a predetermined option flag when power is supplied from the outside and a display operation is started; Displaying the options in a predetermined order on the screen so that the user can change the given options when the option flag is not set to a predetermined logical value, storing the options selected by the user, To the logic value; A third step of detecting a timing mode of an input signal input from the host when the option flag is set to the logical value; A fourth step of checking whether the detected timing mode is one of the given timing modes; A fifth step of performing screen adjustment using screen control information of a corresponding mode when the detected timing mode is one of the given timing modes; And displays the screen control information of a mode closest to the mode in a predetermined order on the screen so that the user changes the screen control information when the detected timing mode is not one of the given timing modes, And a sixth step of constructing changed screen control information.

[Action]

According to the above method, whether or not the user selects one of the options and whether or not the frequency of the input signal, that is, the necessity of the screen adjustment according to the timing mode, is determined by the monitor itself, The user is able to adjust the screen by merely selecting and changing the options and control information displayed on the screen by inducing the user to perform the option selection and the screen adjustment only when there is a necessity of the screen adjustment.

[Example]

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 2a and 2b show a preferred embodiment of a monitor screen adjustment method according to the present invention. As shown in FIGS. 2a and 2c, a new monitor screen adjustment method according to the present invention allows the monitor to determine whether to allow the user to select an option when power is applied, The user is prompted to select it only when necessary (S1 to S10). In addition, in this method, the monitor itself determines whether there is a necessity of screen adjustment according to the frequency of the input signal, and automatically displays the control information on the screen according to a predetermined sequence when it is determined that there is a need for screen adjustment Thereby allowing the user to easily perform the screen adjustment (S11 to S25).

The screen pattern adjustment method of this embodiment is realized by the microprocessor 10 of the screen adjustment device of the monitor. In order to realize this method, the manufacturer prepares an option flag so that the first user of the monitor product to be shipped by the manufacturer selects options of the product, and sets the logical value of the option flag to Set it to 'false'. The process of the above-mentioned screen control performed by the microprocessor will be described step by step as follows.

Referring to FIG. 2A, when power is supplied from the outside and a display operation is started, the microprocessor 31 determines whether the options (language, OSD screen holding time, OSD screen position, color temperature, It is checked whether the logical value of the option flag is 'true' (S1).

Next, in steps S2 to S10, if the option flag is set to a logical value of 'false', that is, if no options have been selected by any user, the current user can select the given options Are displayed on the screen, the options selected by the user are stored in the memory, and the option flag is set to a logical value of 'True'. This process will be described in detail as follows. First, the value of the first index_op among the option indices corresponding to the given options is set to the value of the index index INDEX_op (S2). Next, it is determined whether the value of the option index variable is a value indicating 'option_end' (S3). If an option end is indicated, the option flag is set to a logical value of 'True' (S4). If the value of the option index variable INDEX_op does not indicate the end of the option in step S3, the option corresponding to the value of the option index variable is displayed on the screen in the OSD manner (S5) Information is input (S6). Next, the option function is performed according to the inputted option information (S7). If there is an option selection confirmation by the user (S8), the inputted option information is stored in the memory and then the value of the option index variable is set to the value (S9, S10). In step S8, if there is no option selection check by the user, the selection of the user is awaited (S6). Steps S3 to S10 described above are repeatedly performed until the value of the option index variable indicates the end of the option.

Next, referring to FIG. 2B, when the option flag is set to the logical value of 'true' (S1) or the selection of the given options is completed (S3), the timing mode of the input signal input from the host is detected First, the frequencies of the horizontal and vertical synchronization signals HSYNC and VSYNC input from the host are respectively detected (S11). Then, it is searched whether the detected frequency information exists in the memory, and if they exist, the value of the adjustment index (index_adj) corresponding to the detected frequencies is set to the value of the adjustment index variable (INDEX_adj) A value larger than the value of the adjustment index (last index_adj) is set as the value of the adjustment index variable INDEX_adj (S12).

Next, in step S13, it is checked whether the value of the adjustment index variable (INDEX_adj) is larger than the value of the last adjustment index to check whether the detected timing mode is one of the given timing modes.

Then, when the detected timing mode is one of the given timing modes, that is, when the value of the adjustment index variable INDEX_adj is not larger than the value of the last adjustment index, the screen adjustment is performed by the screen control information of the corresponding mode Digital converter 33 shown in FIG. 1 reads the screen control information stored in the area indicated by the adjustment index having the same value as the value of the adjustment index variable INDEX_adj from the memory (S14) And the OSD video generator 34 to perform screen adjustment according to the screen control information read (S15), and terminates the adjustment function execution. This automatically adjusts the screen according to the information stored in the memory.

Next, referring to FIG. 2C, in step S13, when the value of the adjustment index variable INDEX_adj is greater than the value of the last adjustment index, that is, when the detected timing mode is not one of the given timing modes When there is no screen control information corresponding to the timing mode, information corresponding to an adjustment index having a value closest to the value of the adjustment index variable INDEX_adj is read (S16), and the analog-to-digital converter 33 and the OSD The video generator 34 outputs the screen control information and performs screen adjustment primarily in accordance with the screen control information (S17). Thus, the screen control information of the mode closest to the timing mode of the input signal among the modes stored in the memory is displayed on the screen.

Finally, in steps S18 to S25, when the user changes the screen control information displayed on the screen, the changed screen control information is newly stored. This process will be described in detail as follows. First, the first index index_adj of the adjustment indexes corresponding to the given screen adjustment functions is set to the value of the adjustment index variable INDEX_adj (S18). Then, it is determined whether the value of the adjustment index variable indicates 'end of adjustment function' (S19). When the end of the adjustment function is indicated, the adjustment function execution is terminated. In step S19, if the value of the adjustment index variable INDEX_adj does not indicate the end of the adjustment function, the screen control information corresponding to the value of the adjustment index variable is displayed on the screen in the OSD manner (S20) Screen control information according to information selection is input (S21). Next, the screen adjustment function is performed according to the inputted screen control information (S22). If there is a control information selection confirmation of the user (S23), the inputted screen control information is stored in the memory, (S24, S25). In step S23, if there is no control information selection confirmation by the user, the selection of the information of the user is waited (S21). Steps S19 to S25 described above are repeatedly performed until the value of the option index variable indicates the end of the adjustment function. As a result, a new timing mode is stored in the memory. As a result, if a signal of the same timing mode is input thereafter, the microprocessor performs automatic screen adjustment using the stored control information.

[Effects of the Invention]

According to the method of the present invention as described above, the monitor itself determines whether or not to allow the user to select an option, thereby inducing the user to select the option only when the option is required, Accordingly, when it is determined that there is a necessity of the screen adjustment, the control information is automatically displayed on the screen according to a predetermined sequence of steps when it is determined that there is a need for the screen adjustment, thereby enabling the user to easily perform the screen adjustment.

Claims (6)

A video amplification unit 10 for amplifying a video signal provided from a host, a display control unit 20 for storing screen control information corresponding to each of the given timing modes and given options and controlling the deflection circuit 2 using the stored screen control information and options, And a control unit (20) for controlling the video amplifying unit. The method of adjusting a screen of a monitor for performing a screen adjustment in response to a user's instruction in a timing mode of an input signal, the method comprising: A first step (S1) of checking a predetermined option flag, displaying the options in a predetermined order on the screen so that the user can change given options when the option flag is not set to a predetermined logical value And stores the options selected by the user, A third step (S11, S12) of detecting a timing mode of an input signal inputted from a host when the option flag is set to the logical value, (S13) of checking whether the mode is one of the given timing modes, and performing screen adjustment using the screen control information of the corresponding mode when the detected timing mode is one of the given timing modes (S14, S15). When the detected timing mode is not one of the given timing modes, the screen control information of the mode closest to the corresponding mode is displayed in a predetermined order And a sixth step (S16 to S25) of displaying the screen control information on the screen and changing the screen control information changed by the user. Adjustment method. 2. The method of claim 1, wherein the second step sets the value of the first option index of the option indexes corresponding to the given options to the value of the option index variable, (S4) of setting the option flag to a logical value of true indicating an end of the option if the value of the option index variable indicates the end of the option (S5, S6) of displaying an option corresponding to the value of the option index variable on the screen and receiving option information according to the selection of the user; A step S7 of performing an optional function in accordance with the inputted option information, a step S8 of determining whether an option selection is confirmed by the user, a step S8 of storing the inputted option information, (S9, S10) of setting the value of the option index to the value of the next option index and waiting for the selection of the user if there is no option selection confirmation; and if the value of the option index variable indicates the end of the option, And repeating the steps S10 to S10. 3. The method as claimed in claim 2, wherein the step (3) comprises the steps of: (S11) detecting frequencies of horizontal and vertical synchronizing signals input from the host, Setting the value of the adjustment index corresponding to the frequencies to the value of the adjustment index variable and setting the value of the adjustment index variable larger than the value of the last adjustment index if the detected frequencies do not exist (S12) How to adjust the monitor screen. 4. The method of claim 3, wherein the fourth step comprises checking whether the value of the adjustment index variable is larger than the value of the last adjustment index (S13). 5. The method according to claim 4, wherein, in the fifth step, when the value of the adjustment index variable is not greater than the value of the last adjustment index, (S14) of reading information from a memory (S14), and performing a screen adjustment according to the read screen control information (S15). 6. The method of claim 5, wherein the step (6) further comprises: reading information corresponding to an adjustment index having a value closest to the value of the adjustment index variable when the value of the adjustment index variable is greater than the value of the last adjustment index (S17, S18) of performing a screen adjustment primarily in accordance with the read information and setting a value of a first adjustment index among adjustment indexes corresponding to the given screen adjustment functions as a value of the adjustment index variable, (S19) of judging whether the value of the adjustment index variable indicates the end of the adjustment function and ending the adjustment function if the end of the adjustment function is indicated; and if the value of the adjustment index variable indicates the end of the adjustment function (S20) of displaying screen control information corresponding to the value of the adjustment index variable on the screen, (S22) of receiving the control information and performing a screen adjustment function according to the input screen control information, determining whether there is a control information selection confirmation by the user (S23), and inputting the screen control information (S24, S25) of setting the value of the adjusted index variable to the value of the next adjustment index after the storing, and waiting for the user to select the control information if there is no confirmation of the selection of the control information, And repeating the steps S19 to S25 until the end of the screen is displayed.