JPH10200830A - Flywheel control type adjustment device and adjustment method for contrast and brightness of screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the adjustment of a screen and to improve operability by simultaneously adjusting brightness and contrast by the operation of rotating a flywheel control knob. SOLUTION: By using a computer, the three primary colors of R, G and B generated by a VGA card and horizontal and vertical synchronizing signals are detected in a central processing unit 20 and sent to an image amplifier circuit 50 and simultaneously, the variables of an image format, a resolution and the size of the screen, etc., are recorded in a memory 40. The variables are made correctable and displayed in an icon system through a screen display integrated circuit 60. The central processing unit 20 detects the display mode of the VGA card and the rotation speed of the flywheel control knob of a user interface circuit 30, sends the result of comparison with the display mode of the memory 40 to the screen display integrated circuit 60 and performs the respective kinds of image adjustment to a cathode-ray tube 80. The adjustment is performed based on display for which strength is digitized so as to simultaneously adjust the brightness and the contrast by the rotation of the knob.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for adjusting the contrast and brightness of a screen by flywheel control, and more particularly to an apparatus and a method used for adjusting the screen of a color monitor for a computer.

[0002]

2. Description of the Related Art With the development of computer software, computer monitors have been required to have higher and higher quality in the market. The technology for greatly improving the quality of the cathode ray tube, which is a main component of computer monitors, has not advanced much. The cathode ray tube originally has a large error. Particularly, geometrical figures, convenence, focus,
An error may occur in the purity or the like, and a different degree of distortion may be generated depending on the installation location and the installation angle of the monitor. A good screen effect can be obtained only by adjusting and compensating the distortion with another circuit. Adjustment of these functions requires different adjustments according to the installation location of the monitor, as well as brightness (Brightness) and contrast (Cont).
Last) needs to be adjusted according to the habits of the user, and since the requirements for brightness and contrast differ from user to user, there are many opportunities for adjustment, contrast affects the clarity of the screen, and brightness affects the background. And the two are in a complementary relationship. Currently, most commercially available monitors are equipped with various adjustment keys on the faceboard, and when adjusting, adjust the screen contrast first and then adjust the brightness, or adjust the brightness first and then adjust the screen. Is to be adjusted. In other words, unless two adjustment steps of contrast and brightness are performed, the screen quality desired by the user cannot be obtained, and the adjustment is inconvenient. In particular, in a general monitor, only a simple diagram of the function keys is added on the faceboard, and most users do not know the adjustment functions of many function keys.
Therefore, it is often the case that the user presses one of the function keys to understand the function. In addition, the user may arbitrarily make adjustments to lose the best display mode of the screen, and if the adjustments are unreasonable, there is a possibility that visual acuity may be impaired. At present, some companies present a method of displaying the magnitude of the user's adjustment on the screen and notifying the user, but it has been changed that the user must adjust the contrast and the brightness separately. There was still the problem that the adjustment was cumbersome, that is, not more than a traditional adjustment method.

[0003]

According to the present invention, the brightness and the contrast can be adjusted in one rotation operation by rotating the flywheel control knob left and right, that is, when the flywheel control knob is turned to the left. A kind of "flywheel control type adjustment device of screen contrast and brightness and adjustment method which can adjust the contrast and brightness of the CRT to the maximum and turn the clockwise to adjust the contrast and brightness of the CRT to the minimum" The objective is to eliminate the need to adjust brightness and contrast separately, eliminate the need to adjust by referring to the adjustment information displayed on the cathode ray tube, and facilitate screen adjustment. I have.

[0004]

According to the first aspect of the present invention, one image input port 10, one central processing unit 20,
It includes one user interface circuit 30, an image amplification circuit 50, a screen display integrated circuit 60, a horizontal / vertical deflection circuit 70, and a cathode ray tube 80. When a computer is used, a VGA card is used.
After the three primary colors of red, green and blue, the horizontal synchronizing signal and the vertical synchronizing signal generated by D) are sent to the central processing unit 20 via the image input port 10 and detected, the image amplifying circuit 50
At the same time, the variables of each adjustment are displayed in an icon manner via the screen display integrated circuit 60, and the variables of each adjustment are displayed in an icon manner via the screen display integrated circuit 60. After detecting the type of display mode and detecting the rotation speed of the flywheel control knob in the user interface circuit 30 and comparing the result with the display mode in the memory 40, the result is displayed on the screen display integrated circuit. 6
0 to the screen display integrated circuit 60 and the CRT 8
The flywheel control type adjustment device for screen contrast and brightness is characterized in that various image adjustment controls are performed for 0.

A second aspect of the present invention is a method for simultaneously adjusting the brightness and contrast of a CRT by rotating a flywheel control knob to the left and right. When the numerical value is displayed and the user turns the flywheel control knob to adjust the brightness and adjusts the brightness so that the brightness value is less than half or adjusts the brightness so that the value is more than half, Continue adjusting the contrast value, adjust the contrast value to the maximum or minimum, return to the brightness adjustment, continue the flywheel control knob when the contrast adjustment is completed and the user determines that the brightness is insufficient or not dark enough Turn and adjust the contrast and brightness in this way. Completed by the operation of turning the trawl knob to the left or right, characterized in that it simplified the adjustment steps for Akirado and contrast, and a flywheel-controlled method of adjusting the contrast and Akirado screen.

According to a third aspect of the present invention, when the flywheel control knob is turned clockwise, the adjusting step includes the following steps:
~ J, ie, a. The user turns the flywheel control knob in the user interface circuit 30 to the right b. The central processing unit 20 has a user interface circuit 30
The user determines that the user wants to increase the luminosity based on the acquired turning information. C. The central processing unit 20 determines whether the brightness value is less than half, and if so, executes step d, and if not, executes step g. D. The central processing unit 20 uses the user interface circuit 3
Obtain a rotation speed value from 0, and determine the increment of the brightness value based on the rotation speed e. The central processing unit 20 sends the information to the screen display integrated circuit 60, and causes the screen display integrated circuit 60 to display the brightness scale line on the cathode ray tube 80 via the image amplifying circuit 50. f. Central processing unit 20 also sends information to image amplifier circuit 50 to increase the brightness value and increase the brightness of CRT 80 g. The central processing unit 20 determines whether or not the contrast value is the maximum, and if so, executes the step d;
Otherwise, execute step h h. The central processing unit 20 uses the user interface circuit 3
Determine the increment of the contrast value according to the rotation speed value obtained from 0. i. The central processing unit 20 sends information to the screen display integrated circuit 60, and the contrast scale line is changed from the screen display integrated circuit 60 through the image amplifier circuit 50 to the CRT 80.
Display above j. 3. The screen contrast and brightness according to claim 2, wherein the central processing unit 20 also sends a signal to the image amplification circuit 50 to increase the contrast value to increase the contrast of the cathode ray tube 80. Flywheel control type adjustment method.

According to a fourth aspect of the present invention, when the flywheel control knob is turned to the left, the adjustment step is as follows:
~ T, i.e. k. The user turns the flywheel control knob in the user interface circuit 30 to the right l. The central processing unit 20 has a user interface circuit 30
The user determines that the user wants to lower the luminosity based on the acquired turning information. M. The central processing unit 20 determines whether the brightness value is greater than half, and if so, executes step n; if not, executes step q. N. The central processing unit 20 uses the user interface circuit 3
Obtain a rotation speed value from 0, and determine the amount of decrease in the brightness value based on the rotation speed o. The central processing unit 20 sends the information to the screen display integrated circuit 60, and causes the screen display integrated circuit 60 to display the brightness scale line on the cathode ray tube 80 via the image amplifying circuit 50. p. The central processing unit 20 also sends information to the image amplifier circuit 50 to reduce the brightness value and reduce the brightness of the CRT 80 q. The central processing unit 20 determines whether or not the contrast value is minimum, and if so, executes step n;
Otherwise, execute step r r. The central processing unit 20 uses the user interface circuit 3
Determine the amount of decrease in the contrast value based on the rotation speed value obtained from 0. s. The central processing unit 20 sends information to the screen display integrated circuit 60, and the contrast scale line is changed from the screen display integrated circuit 60 through the image amplifier circuit 50 to the CRT 80.
Display above t. The screen contrast and brightness according to claim 2, wherein the central processing unit (20) also sends a signal to the image amplification circuit (50) to reduce the contrast value and reduce the contrast of the cathode ray tube (80). Flywheel control type adjustment method.

According to the invention of claim 5, the function of independently adjusting the brightness and the contrast is also reserved, and the adjustment is performed by the user selecting the icon function displayed on the CRT using the flywheel control knob. The brightness and contrast adjustment values adjusted according to this method can also be stored in the memory, and when the user makes the next adjustment, whether it is the adjustment provided by the method provided by the present invention or alone. The method of claim 2, wherein the brightness and the contrast value are used as the starting values even when adjusting the function.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the method provided by the present invention, the brightness and contrast of a screen are displayed by numerical values, and the strongest is displayed with a numeral 100, and the weakest is displayed with a numeral 0. Turn the flywheel control knob to adjust screen brightness and contrast.
Then, the microprocessor in the monitor detects the original brightness value of the screen, and when the brightness value is larger than 50 or smaller than 49, the adjustment of the contrast value proceeds. After the contrast value adjustment is completed, if the user still finds that the brightness is insufficient, the flywheel control knob is continuously turned to perform the readjustment starting from the current brightness, and thus the adjustment of the contrast and brightness is performed by the user. The operation is completed with the operation of turning the wheel control knob to the left or right, and thus the steps of adjusting the brightness and the contrast are simplified.

[0010]

FIG. 1 is a block diagram of an electric circuit according to the present invention. The electric circuit of the present invention has one image input port 1
0 (Video input), one central processing unit 20, one user interface circuit 30, an image amplifier circuit 50, and a screen display integrated circuit 60 (On).
(Screen Display IC), a horizontal / vertical deflection circuit 70, and a cathode ray tube 80.

When a computer is used, the VGA card (VGA CARD) generates red, green, blue (R,
G and B), the horizontal synchronization signal and the vertical synchronization signal are:
The signal is sent to the central processing unit 20 via the image input port 10 for detection, and then sent to the image amplifier circuit 50. In addition, since most of the color monitors are of the multi-scan type, respective variables such as different image formats, resolutions, and screen sizes are recorded in the memory 40 by utilizing the technology of the central processing unit. It can be easily modified so that the variables of each adjustment can be displayed in an icon manner via the screen display integrated circuit 60. The central processing unit 20 detects which type of display mode the VGA card is in,
After detecting the speed at which the flywheel control knob is turned by the user during the comparison, the result is compared with the display mode in the memory 40, and the result is sent to the screen display integrated circuit 60 and the screen display integrated circuit 60. Various image adjustment controls are performed.

FIG. 2 is a numerical display diagram of brightness and contrast according to the present invention. The present invention displays the brightness of the screen and the strength of the contrast by numerical values.
Is displayed, and when it is weakest, the number is displayed as 0. As shown in the figure, when the user turns the flywheel control knob, the brightness is adjusted, and if the brightness value is adjusted to be smaller than 50 or adjusted to be larger than 49. The adjustment of the contrast value is progressed, and the contrast value is also indicated by numerals 0 to 100. When adjusting the contrast and brightness values simultaneously,
After setting the contrast value to the maximum value or the minimum value, jump to the brightness adjustment, and when the user determines that the brightness is insufficient or darkness is insufficient, continue turning the flywheel control knob to adjust from the current brightness Just start,
As described above, the adjustment of the contrast and the brightness is completed together with the operation of turning the flywheel control knob left or right by the user, and the steps of adjusting the brightness and the contrast are simplified. Naturally, in the present invention, the functions of independent adjustment of brightness and contrast are also reserved, that is, the user can use the flywheel control knob to control the CRT 8.
The adjustment can be advanced by selecting the icon function displayed on the display 0. The brightness and contrast adjustment values adjusted by this method are also stored in the memory 40, and when the user performs the next adjustment, the adjustment values are displayed. Is the adjustment by the method provided by the present invention or the adjustment of the single function, the brightness and the contrast value are used as the starting values.

FIG. 3 is an adjustment flowchart for increasing the brightness according to the present invention. The following description is based on the definition that turning the flywheel control knob to the right adjusts brightness and contrast values, and turning to the left adjusts them lower. When the user turns the flywheel control knob clockwise to make adjustments to increase the brightness and contrast of the CRT 80, the central processing unit 20 checks whether the brightness of the original screen is less than half, and if less than half, The amount of brightness increase is determined by the speed at which the user turns the flywheel control knob, and the brightness scale line (Bri) is displayed on the screen.
(g. Scale Scale-bar) is displayed to notify the user of the adjustment state. At this time, the central processing unit 2
0 causes the image amplification circuit 50 to increase the brightness of the cathode ray tube 80. At this time, the user can realize that the brightness of the screen becomes brighter as the flywheel control knob is turned to the right, and thus the brightness becomes more than half. Until this operation is duplicated. After the brightness becomes larger than half, the central processing unit 20 determines whether or not the contrast value of the original screen is 100. If the contrast value of the original screen is 100, it indicates that the contrast value cannot be further adjusted. After returning to the adjustment state, the user further turns the flywheel control knob to the right to obtain a screen brightness that satisfies the user.
If the contrast value is less than 100, the amount of increase in the contrast value is determined by the speed at which the user turns the flywheel control knob, and a contrast scale line is displayed on the cathode ray tube 80 to adjust the state to the user. To inform. At this time, the central processing unit 20 causes the image amplifying circuit 50 to increase the contrast of the cathode ray tube 80, and at this time, the user feels that the contrast of the screen is increased by turning the flywheel control knob to the right, The operations are repeated until the contrast value reaches the maximum scale, and the operation returns to the brightness adjustment state.

The above steps are summarized as follows. Step A: User operates user interface circuit 3
Turn the middle flywheel control knob clockwise. Step B: Based on the turning information obtained by the central processing unit 20 from the user interface circuit 30, it is determined that the user wants to increase the brightness. Step C: The central processing unit 20 determines whether or not the brightness value is less than half, and if so, executes step D; otherwise, executes step G. Step D: The central processing unit 20 obtains the rotation speed value from the user interface circuit 30, and determines the increment of the brightness value based on the rotation speed. Step E: The central processing unit 20 sends the information to the screen display integrated circuit 60, and the screen display integrated circuit 60 passes the brightness scale line through the image amplifier circuit 50 to the CRT 8.
0 is displayed. Step F: The central processing unit 20 also sends information to the image amplification circuit 50, and increases the brightness value to increase the brightness of the CRT 80. Step G: The central processing unit 20 determines whether or not the contrast value is the maximum.
And otherwise execute step H. Step H: The central processing unit 20 determines the increase amount of the contrast value based on the rotation speed value obtained from the user interface circuit 30. Step I: The central processing unit 20 sends information to the screen display integrated circuit 60, and the contrast scale line is displayed on the CRT 80 via the image amplifier circuit 50 from the screen display integrated circuit 60. Step J: The central processing unit 20 also sends a signal to the image amplifier circuit 50 to increase the contrast value and increase the contrast of the cathode ray tube 80.

When the user turns the flywheel control knob to the left, ie, to decrease the brightness and contrast of the CRT 80, the central processing unit 20 checks whether or not the brightness of the original screen is greater than half. If it is larger, the amount of decrease in brightness is determined by the rotation speed of the flywheel control knob, and a brightness scale line is displayed on the cathode ray tube 80 to notify the user of the adjustment state.
At this time, the central processing unit 20 causes the image amplifying circuit 50 to decrease the brightness of the cathode ray tube 80, and at this time, the brightness of the screen can be sensed to become darker with the operation of turning the flywheel control knob to the left. Overlap until less than half. After the brightness decreases to less than half, the central processing unit 20 checks whether the contrast value of the original screen is in the minimum state, and if it is the minimum state, indicates that the contrast value can no longer be adjusted. If the display returns to the above-described brightness adjustment state and the flywheel control knob is further turned to the left, the screen continues to be darkened until the CRT 80 becomes completely dark. If the contrast value of the original screen is not the minimum state, the amount of decrease in contrast is determined by the rotation speed of the flywheel control knob of the user, and a contrast scale is displayed on the CRT 80 to adjust the state to the user. At this time, the central processing unit 2
0 causes the image amplifying circuit 50 to lower the contrast of the cathode ray tube 80. At this time, the user can feel that the contrast of the screen becomes weaker as the flywheel control knob is turned to the left, and thus the contrast value is minimized. When the operations are repeated until the brightness is adjusted, the state returns to the brightness adjustment state.

The above steps are summarized as follows. Step K: User operates user interface circuit 3
Turn the middle flywheel control knob clockwise. Step L: Based on the turning information obtained by the central processing unit 20 from the user interface circuit 30, it is determined that the user wants to lower the brightness. Step M: The central processing unit 20 determines whether or not the luminosity value is larger than half. If it is, the step N is executed, and if not, the step Q is executed. Step N: The central processing unit 20 acquires the rotation speed value from the user interface circuit 30, and determines the decrease amount of the brightness value based on the rotation speed value. Step O: The central processing unit 20 sends information to the screen display integrated circuit 60, and the screen display integrated circuit 60 passes the brightness scale line through the image amplifier circuit 50 to the cathode ray tube 8.
0 is displayed. Step P: The central processing unit 20 sends the information to the image amplifier circuit 50 again, and reduces the brightness value to reduce the brightness of the CRT 80. Step Q: The central processing unit 20 determines whether or not the contrast value is the minimum.
And otherwise execute step R. Step R: The amount of decrease in the contrast value is determined by the central processing unit 20 based on the rotation speed value obtained from the user interface circuit 30. Step S: The central processing unit 20 sends information to the screen display integrated circuit 60, and the contrast scale line is displayed on the CRT 80 via the image amplifier circuit 50 from the screen display integrated circuit 60. Step T: The central processing unit 20 also sends a signal to the image amplification circuit 50 to reduce the contrast value and reduce the contrast of the CRT 80.

[0017]

As described above, when the flywheel control type adjusting device and the adjusting method of the contrast and brightness of the screen provided by the present invention are used, the brightness and the contrast are individually adjusted by the known monitor. However, this is accomplished with a simple structure and the steps are accomplished by a simple act of turning the flywheel control knob.

[Brief description of the drawings]

FIG. 1 is an electric circuit block diagram of the present invention.

FIG. 2 is a numerical display diagram of brightness and contrast according to the present invention.

FIG. 3 is an adjustment flowchart when the brightness is adjusted to be high according to the present invention.

FIG. 4 is an adjustment flowchart when the brightness is adjusted to be low according to the present invention.

[Explanation of symbols]

 Reference Signs List 10 image input port 20 central processing unit 30 user interface circuit 40 memory 50 image amplifying circuit 60 screen display integrated circuit 70 horizontal / vertical deflection circuit 80 CRT

Claims (5)

[Claims] 1. One image input port 10, one central processing unit 20, one user interface circuit 30, an image amplifier circuit 50, a screen display integrated circuit 60, a horizontal / vertical deflection circuit 70, When using a computer equipped with a cathode ray tube 80, the V-G card (VG
A CARD), the three primary colors of red, green and blue, the horizontal synchronizing signal and the vertical synchronizing signal are sent to the central processing unit 20 via the image input port 10 and detected, and then sent to the image amplifier circuit 50. At the same time, the variables of each adjustment are displayed in an icon manner via the screen display integrated circuit 60,
The variables of each adjustment are displayed in an iconic manner via the screen display integrated circuit 60, and the central processing unit 20 detects which display mode the buoy A card is in and controls the flywheel control knob in the user interface circuit 30. After the rotation speed is detected and compared with the display mode in the memory 40, the result is sent to the screen display integrated circuit 60 and the screen display integrated circuit 60, and various image adjustment controls are performed on the CRT 80. A flywheel control type adjustment device for screen contrast and brightness. 2. A method in which the brightness and contrast of a CRT can be adjusted simultaneously by rotating a flywheel control knob left and right,
The brightness and contrast of the monitor screen are displayed numerically, and the user adjusts the brightness by turning the flywheel control knob, and adjusts the brightness so that the brightness value is less than half, or adjusts the brightness value. When adjusting to be larger than half, proceed with the contrast value adjustment, adjust the contrast value to the maximum or minimum, return to the brightness adjustment, finish the contrast adjustment, judge that the user is insufficient or not sufficiently dark Turn the flywheel control knob continuously, and the contrast and brightness adjustment is completed by turning the flywheel control knob left or right by the user, thus simplifying the brightness and contrast adjustment steps. Flywheel control of screen contrast and brightness Formula adjustment method. 3. The adjustment steps when turning the flywheel control knob to the right include the following steps a to j: a. The user turns the flywheel control knob in the user interface circuit 30 to the right b. The central processing unit 20 has a user interface circuit 30
The user determines that the user wants to increase the luminosity based on the acquired turning information. C. The central processing unit 20 determines whether the brightness value is less than half, and if so, executes step d, and if not, executes step g. D. The central processing unit 20 uses the user interface circuit 3
Obtain a rotation speed value from 0, and determine the increment of the brightness value based on the rotation speed e. The central processing unit 20 sends the information to the screen display integrated circuit 60, and causes the screen display integrated circuit 60 to display the brightness scale line on the cathode ray tube 80 via the image amplifying circuit 50. f. Central processing unit 20 also sends information to image amplifier circuit 50 to increase the brightness value and increase the brightness of CRT 80 g. The central processing unit 20 determines whether or not the contrast value is the maximum, and if so, executes the step d;
Otherwise, execute step h h. The central processing unit 20 uses the user interface circuit 3
Determine the increment of the contrast value according to the rotation speed value obtained from 0. i. The central processing unit 20 sends information to the screen display integrated circuit 60, and the contrast scale line is changed from the screen display integrated circuit 60 through the image amplifier circuit 50 to the CRT 80.
Display above j. 3. The screen contrast and brightness according to claim 2, wherein the central processing unit 20 also sends a signal to the image amplification circuit 50 to increase the contrast value to increase the contrast of the cathode ray tube 80. Flywheel control type adjustment method. 4. The adjustment steps when turning the flywheel control knob to the left include the following k to t: k. The user turns the flywheel control knob in the user interface circuit 30 to the right l. The central processing unit 20 has a user interface circuit 30
The user determines that the user wants to lower the luminosity based on the acquired turning information. M. The central processing unit 20 determines whether the brightness value is greater than half, and if so, executes step n; if not, executes step q. N. The central processing unit 20 uses the user interface circuit 3
Obtain a rotation speed value from 0, and determine the amount of decrease in the brightness value based on the rotation speed o. The central processing unit 20 sends the information to the screen display integrated circuit 60, and causes the screen display integrated circuit 60 to display the brightness scale line on the cathode ray tube 80 via the image amplifying circuit 50. p. The central processing unit 20 also sends information to the image amplifier circuit 50 to reduce the brightness value and reduce the brightness of the CRT 80 q. The central processing unit 20 determines whether or not the contrast value is minimum, and if so, executes step n;
Otherwise, execute step r r. The central processing unit 20 uses the user interface circuit 3
Determine the amount of decrease in the contrast value based on the rotation speed value obtained from 0. s. The central processing unit 20 sends information to the screen display integrated circuit 60, and the contrast scale line is changed from the screen display integrated circuit 60 through the image amplifier circuit 50 to the CRT 80.
Display above t. The screen contrast and brightness according to claim 2, wherein the central processing unit (20) also sends a signal to the image amplification circuit (50) to reduce the contrast value and reduce the contrast of the cathode ray tube (80). Flywheel control type adjustment method. 5. The function of independent adjustment of brightness and contrast is also reserved, and the user can use the flywheel control knob to select an icon function displayed on a cathode ray tube to perform the adjustment. The brightness and contrast adjustment values adjusted by the above are also stored in the memory, and when the user performs the next adjustment, whether the adjustment is the adjustment provided by the method provided by the present invention or the adjustment of a single function. 3. The method of claim 2, wherein the brightness and contrast values are used as starting values.