KR100672061B1 - Screen auto-alignment system - Google Patents

Abstract

The present invention relates to an automatic adjustment system for adjusting the position and size of an image image in relation to a screen on a monitor, comprising: a storage device for storing a horizontal size value, a vertical size value, a vertical position value and a shift value; To adjust the size of the image image and to provide a horizontal video signal and a vertical video signal to obtain a horizontal size value and a vertical size value of the image image, store the horizontal size value and the vertical size value in the storage device, and perform raster scan. Adjust the area, and also store the vertical position value and the shift value of the raster scan area in the storage device, according to the horizontal video signal and the vertical video signal, and the horizontal size value, vertical size value, vertical position value and shift value Microcomputer for calculating the horizontal position value, ratio value, horizontal scan line value, phase shift vertical position value, plug-in horizontal size value and plug-in vertical size value of the image image used as data in image adjustment by reading from the storage device. Controller; The horizontal video signal, the vertical video signal, the horizontal size value, the vertical size value, the horizontal scan line value, the vertical position value, the shift value, the horizontal position value, the ratio value, the horizontal scan line value, and the phase shift are connected to the microcontroller. A deflection controller that receives data including a vertical position value, a plug-in horizontal size value and a plug-in vertical size value, and transmits a deflection signal to the monitor to adjust the image image as well as a horizontal flyback signal and a vertical flyback signal; ; Connected to the microcontroller, receiving the horizontal flyback signal and the vertical flyback signal, converting the signals into a horizontal flyback digital signal and a vertical flyback digital signal, and transmitting the digital signals to the microcontroller; And a video detection circuit which receives data in the video preamplifier signal, converts the signal into digital data, and transmits the digital data to the microcontroller.

Therefore, the screen automatic adjustment system according to the present invention can automatically adjust the position and size of the image image in relation to the screen.

Description

Screen Automatic Adjustment System {SCREEN AUTO-ALIGNMENT SYSTEM}

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of the specification. The drawings illustrate embodiments of the invention and together with the description illustrate the principles of the invention.

1 is a schematic diagram showing a system for pre-adjusting an image image on a monitor screen in a conventional monitor manufacturing facility;

2 is a schematic view showing a conventional monitor system,

3 is a schematic diagram showing an automatic adjustment system for adjusting an image image on a monitor screen according to the present invention;

4 is a view illustrating various video signals during operation;

5 shows a programmable horizontal and vertical video signal provided by a microcontroller;

6 is a flow chart showing the steps for adjusting the monitor before being shipped to a customer in accordance with the present invention;

7 shows a microcontroller providing 65% and 85% of the horizontal effective video cycle, respectively.

8 shows a microcontroller providing 65% and 85% of the vertical effective video cycle, respectively.

9 shows a microcontroller providing an automatic adjustment signal having a vertical phase;

10 is a flowchart showing steps for a user to initially perform monitor auto adjustment;

11 is a flowchart showing steps for performing horizontal phase adjustment of an image image;

12 is a view showing various horizontal phase adjustments of an image image;

13 is a flowchart showing steps for performing horizontal scaling of an image image;

14 is a diagram illustrating finding a horizontal size value from an image image through an internal difference;

15 is a flowchart showing steps for performing vertical phase adjustment of an image image;

FIG. 16A shows the rasterscan area moved away from the center of the screen. FIG.

16B is a view illustrating a process of moving a raster scan area according to the position of an image image in the center of the screen

17 is a flowchart showing steps for performing vertical size adjustment of an image image;

18 is a diagram illustrating finding a vertical size value from an image image through an internal difference.

The present invention relates to a system for adjusting the phase and size of an image image in relation to a screen. More particularly, the present invention relates to a system capable of automatically adjusting the phase and size of an image image in relation to a screen.

At the end of the monitor production, the monitor must be tested before it is sent to the customer. In general, the image image is also adjusted at this point to obtain a suitable size and position relative to the screen of the monitor. 1 is a schematic diagram showing a system for pre-adjusting an image image on a monitor screen in a typical monitor manufacturing facility. When the system is switched on, the microcontroller 102 sends the digital data format video signal to the deflection controller 104 via the digital bus 112 (or alternatively, the interface I / O bus). The deflection controller 104 receives the video signal and converts the video signal into a video signal that is raised to several thousand volts. The high voltage video signal is transmitted to the monitor 106. Thus, the image image appears on the image screen of the monitor 106. The automatic adjustment system 108 detects the size and phase of the image on the screen 114 and extracts the relevant data. This image data is transmitted from the automatic adjustment system 108 to the microcontroller 102 via the digital bus 112. According to the received data, the microcontroller 102 determines the movement of the image image in a specific direction or the size adjustment of the image image. Once the image image is adjusted to an acceptable level, the microcontroller 102 sends the registered information to the EEPROM 110 including the horizontal size, the horizontal phase, the vertical size and the vertical phase. In addition, according to various frequency signals mainly used for the monitor 106, information for setting the horizontal size, the horizontal phase, the vertical size and the vertical phase of the frequency signal is transmitted to the EEPROM 110.

2 is a schematic view showing a conventional monitor system. When the system is switched on, the microcontroller 202 in the system determines the type of frequency mode transmitted from the video graphics adapter (VGA) card 204. Depending on the frequency mode, microcontroller 202 pulls data related to horizontal size, horizontal phase, vertical size and vertical phase from EEPROM 206. This data is transmitted from the microcontroller 202 to the deflection controller 208. By this process, the deflection controller 208 can convert the signal provided by the VGA card 204 into an image image having the correct size and position on the display screen 210.

However, there are hundreds of commonly used frequency modes. Thus, it is virtually impossible to include the horizontal, horizontal, vertical and vertical phases corresponding to a particular frequency mode for all frequency modes. If the monitor is in frequency mode without the data registered in advance for the necessary adjustment, the adjustment of the image image can only be achieved by estimation. For example, a fixed mode is used or the one with the pre-registered data and the one closest to the desired frequency mode are selected. Under such circumstances, it is difficult to ensure optimal image image adjustment.

Accordingly, one object of the present invention is to provide an automatic adjustment system for a monitor screen. The system can automatically adjust the position and size of the image image relative to the screen without the need to accumulate corresponding data, including the horizontal size, horizontal phase, vertical size and vertical phase of various frequency modes.

DETAILED DESCRIPTION Hereinafter, the embodiments will be described in detail, in order to achieve this and other advantages and in accordance with the object of the present invention, the present invention provides a system for automatically adjusting monitor screens. The system adjusts the position and size of the image in relation to the monitor screen. The system includes a storage device, a microcontroller, a deflection controller and a video detection circuit. The storage device stores a first horizontal size value, a second horizontal size value, a first vertical size value, a second vertical size value, a vertical position value, and a shift value. The microcontroller provides a horizontal video signal and a vertical video signal to adjust the size of the image image and records the horizontal and vertical size values corresponding to these positions. The horizontal and vertical size values are stored in the storage device. The microcontroller also adjusts the raster scan area and records the vertical position and shift values in storage. Depending on the horizontal video signal and the vertical video signal, the microcontroller reads the horizontal size value, the vertical size value and the shift value from the storage device to the horizontal position value, ratio, horizontal scan line value, shift vertical position value, plug-in horizontal size value and plug-in. Calculate the vertical size value. The calculated horizontal position value, ratio, horizontal scan line value, shift vertical position value, plug-in horizontal size value and plug-in vertical size value are used as data for adjusting the image image. The deflection controller includes horizontal video signal, vertical video signal, horizontal size value, vertical size value, horizontal scan line value, vertical position value, shift value, horizontal position value, ratio, shift vertical position value, plug-in horizontal size value and plug-in vertical. A microcontroller is connected to receive the magnitude value, and the deflection signal is output to the monitor to adjust the monitor's image. The deflection controller also generates a horizontal flyback electrical signal and a vertical flyback electrical signal. The video detection circuit is connected to the microcontroller and receives a horizontal flyback signal and a vertical flyback signal from the deflection controller, and converts the horizontal flyback digital signal and the vertical flyback digital signal. The horizontal flyback digital signal and the vertical flyback digital signal are sent to the microcontroller. The video detection circuitry can also receive data from the image preamplifier and convert it to digital data. Then, the converted digital data is moved to the microcontroller.

The present invention provides an automatic adjustment method for adjusting an image image on a monitor screen. This method is mainly used to adjust the position and size of the image image relative to the monitor screen before the monitor is transferred to the customer. First, a first effective video cycle rate horizontal signal and a first effective video cycle rate vertical signal are provided. According to the first effective video cycle ratio horizontal signal and the first effective video cycle ratio vertical signal, the size of the image image on the screen is adjusted to an appropriate size. After that, the first horizontal size value and the first vertical size value of the image image are recorded. Similarly, a second effective videocycle rate horizontal signal and a second effective videocycle rate vertical signal are provided. According to the second effective video cycle rate horizontal signal and the second effective video cycle rate vertical signal, the size of the image image on the screen is adjusted to an appropriate size. Thereafter, the second horizontal size value and the second vertical size value of the image image are recorded. Signals with zero vertical front porch and zero vertical back porch are provided. Next, the horizontal scan line value is recorded. The horizontal scanline value is the sum of all horizontal scanlines in the vertical front porch, vertical back porch, and effective video cycle. The image is scaled to an appropriate size and the raster scan height is measured. The vertical position value corresponding to the scan height is recorded. According to the vertical range, the vertical position value is adjusted. Finally, shift values related to the vertical position values and the horizontal scan line values are recorded.

The present invention also provides an alternative method for adjusting an image on a monitor screen. This method is mainly used to adjust the position and size of the image image relative to the monitor screen before the monitor is transferred to the customer. First, read a plurality of data from the image amplifier. According to the data, the horizontal phase, horizontal size, vertical phase and vertical size of the image image are adjusted.

The foregoing general description and the detailed description hereinafter will be described in detail with respect to one embodiment, and are intended to add description of the invention in accordance with the claims.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described and an example thereof will be illustrated through the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and the description for the same or similar configurations.

 3 is a schematic diagram showing an automatic adjustment system for adjusting an image image on a monitor screen according to the present invention. As shown in FIG. 3, a screen automatic adjustment system 300 is provided. The system 300 is primarily used to adjust the position and size of the image image in relation to the screen 304 of the monitor 302. In the screen auto-adjustment system 300, the preamplifier 306 amplifies the video signal in advance, as shown in FIG. In general, the video signal provided from the video graphics adapter (VGA) card 332 is 0.7Vp-p. The video signal is increased by the preamplifier 306 to about 4-4.5Vp-p and the amplified video signal is sent to the video detection circuit 308.

The video preamplifier receives a video signal from the microcontroller 312 so that the image on the screen 304 can be automatically adjusted before the monitor 302 is transferred to the customer. The video preamplifier 306 may also receive a video signal from the VGA card 332 (most VGA cards are plugged into an internal slot inside the computer rather than inside the monitor 302). Thus, the user can internally and automatically adjust the relative position of the image image on the screen 304.

The video output amplifier 310 is connected to the video preamplifier 306. Since the image image must be displayed on the screen 304, the voltage magnitude of the video signal must be high. Because the voltage magnitude of the video signal output from the preamplifier 306 is relatively low, the video signal must be amplified by the video output amplifier 310 before the various image images are projected onto the screen 304.

Microcontroller 312 includes ROM 324, RAM 326, and I / O 328. The microcontroller 312 provides a programmable horizontal video signal and a vertical video signal. 5 is a diagram showing programmable horizontal and vertical video signals generated by a microcontroller. As shown in FIG. 5, the horizontal video signal and the vertical video signal each include a front porch, an effective video cycle, and a back porch. In this embodiment, the microcontroller 312 adjusts the effective video cycle of the horizontal video signal and the effective video cycle of the vertical video signal to 65% and 85%, respectively. Also, video signals in the front porch and back porch can be reduced to zero.

The microcontroller 312 transmits a programmable horizontal video signal and a vertical video signal to the deflection controller 314. The deflection controller 314 adjusts the image image to an appropriate horizontal size and an appropriate vertical size. Thereafter, the horizontal size value and the vertical size value are stored in the EEPROM 316. The microcontroller 312 adjusts the raster scan area so that the raster scan area is located at the center of the screen 304. The vertical position value Vpos of the raster scan area is stored in the EEPROM 316. The vertical position value Vpos is adjusted according to 00-FF (hexadecimal code) and thus the obtained shift value is stored in the EEPROM 316.

   In accordance with the programmable horizontal video signal and the vertical video signal, the microcontroller 312 reads the horizontal size value, the vertical size value, the vertical position value Vpos, and the shift value from the EEPROM 316. The microcontroller 312 performs calculations to find corresponding data including the horizontal position value, the ratio, the horizontal scan line, the shift vertical position value, the plug-in horizontal size value, and the plug-in vertical size value. Such data is used to adjust the image image.

The deflection controller 314 includes a deflection processor 318 and a deflection / ultra high voltage circuit 320. The deflection processor 318 is connected to the microcontroller 312 via the digital bus 322. Depending on the input digital data including the horizontal video signal and the vertical video signal (horizontal signal with 65% effective video cycle, vertical signal with 65% effective video cycle, horizontal signal with 85% effective video cycle, 85% Vertical signal, horizontal front porch, horizontal back porch, vertical front porch, vertical back porch, horizontal size value, vertical size value, horizontal scan line value, vertical position value Vpos, shift value, horizontal position value Hpos , The ratio, the shift vertical position value, the plug-in horizontal size value and the plug-in vertical size value), and the deflection processor 318 generates a deflection electrical signal corresponding to the deflection / ultra high voltage circuit 320.

The deflection / ultra high voltage circuit 32 is connected to the deflection processor 318. The deflection / ultra high voltage circuit 320 receives the deflection electrical signal from the deflection processor 31 and converts the signal into an ultra high voltage deflection electrical signal. The ultra high voltage deflection electrical signal is sent to the monitor 302 for movement and scaling of the image image on the screen 304. The deflection / ultra high voltage circuit 320 outputs a horizontal flyback signal and a vertical flyback signal to the video detection circuit 308 according to the result of the shifting and deflection. As a result, the video detection circuit 308 can monitor the exact state of the image adjustment.

The video detection circuit 308 is a component of the on-screen display (OSD) unit 330. In order to perform adjustment of the image image, the OSD 330 generates a video signal communication frame. The communication frame for adjusting the image image will also appear on the screen 301.                     

The video detection circuit 308 is connected to the microcontroller 312 via the digital bus 322. The video detection circuit 308 may receive a horizontal flyback signal and a vertical flyback signal from the deflection controller 314, and may convert the signals into a horizontal flyback digital signal and a vertical flyback digital signal, respectively. The converted horizontal flyback digital signal and the vertical flyback digital signal are sent to the microcontroller 312. In addition, the video detection circuit 308 may receive a video preamplifier signal (including a horizontal video signal and a vertical video signal) from the video preamplifier 306 and convert the signal into digital data. The digital data is transmitted to the microcontroller 312 via the digital bus 322.

6 is a flow chart showing steps for adjusting a monitor before the monitor is transferred to a customer in accordance with the present invention. As shown in FIG. 6 (also referring to FIG. 3), the steps required to adjust the position and size of the image image relative to the screen 304 on the monitor 302 before the monitor is transferred to the customer are outlined. Is indicated. First, the microcontroller 312 provides a deflection controller 314 for a horizontal signal having a 65% effective video cycle and a vertical signal having a 65% effective video cycle (S602). FIG. 7 shows a microcontroller providing an effective video cycle of 65% and 85% horizontal, respectively. As shown in Fig. 7, a horizontal signal having an effective video cycle of 65% is given by the following formula.

Horizontal signal:                     

Similarly, Figure 8 shows a microcontroller providing an effective video cycle of 65% and 85% vertical, respectively. As shown in Fig. 8, a vertical signal having an effective video cycle of 65% is given by the following formula.

Vertical signal:

According to the horizontal signal having 65% effective video cycle and the vertical signal having 65% effective video cycle, the deflection controller 314 adjusts the image image to an appropriate size. Thereafter, the automatic adjustment system 108 (not shown in FIG. 3, see FIG. 1) is operated. As a result, the automatic adjustment system 108 transmits the size and position data of the image image to the microcontroller 312 via the digital bus 322 (S604).

The microcontroller 312 determines whether or not the image image is adjusted to an appropriate size (S606). If the image image has not yet reached the proper size, the microcontroller 312 continues to adjust the image image in step S604. On the other hand, if the image image has already reached the proper size, the horizontal size value Hsize detected by the deflection controller 314 by the video signal detection circuit 308 corresponds to the horizontal signal having an effective video cycle of 65%. ) And the vertical size value Vsize (corresponding to a vertical signal having an effective video cycle of 65%) are sent to the microcontroller 312. The horizontal size value Hsize and the vertical size value Vsize are transmitted from the microcontroller 312 to the EEPROM 316 through the digital bus 322 for storage (S608).

Next, the microcontroller 312 provides the deflection controller 314 with a horizontal signal having an 85% effective video cycle and a vertical signal having an 85% effective video cycle (S610). As shown in Fig. 7, the horizontal signal having an effective video cycle of 85% is given by the following formula.

Horizontal signal:

Similarly, as shown in Fig. 8, a vertical signal having an effective video cycle of 85% is given by the following formula.

Vertical signal:

According to the horizontal signal having 85% effective video cycle and the vertical signal having 85% effective video cycle, the deflection controller 314 adjusts the image image to an appropriate size. After that, the automatic adjustment system 108 (shown in FIG. 1) is activated. As a result, the automatic adjustment system 108 transmits the size and position data of the image image to the microcontroller 312 via the digital bus 322 (S612).                     

The microcontroller 312 determines whether or not the image image is adjusted to an appropriate size (S614). If the image image has not yet reached the proper size value, the microcontroller 312 continues the image image adjustment of step S612. On the other hand, if the image image has already reached the proper size value, the horizontal size value Hsize detected by the deflection controller 314 by the video signal detection circuit 308 corresponds to the horizontal signal having an effective video cycle of 85%. ) And the vertical size value Vsize (corresponding to a vertical signal having an effective video cycle of 85%) are sent to the microcontroller 312. The horizontal size value Hsize and the vertical size value Vsize are transmitted from the microcontroller 312 to the EEPROM 316 via the digital bus 322 for storage (S616).

Microcontroller 312 also provides a vertical signal where front porch = back porch = 0. 9 shows a microcontroller providing an auto-adjustment signal having a vertical phase. The vertical signal acts as an automatic adjustment signal (S618). The video detection circuit 308 detects the number of horizontal scan lines (H lines) occupied by the vertical signal (ie back porch + effective video cycle + back porch). The numerical value of the horizontal scan line (H line) is transmitted to the EEPROM 316 for storage (S620). In response to the video signal provided from the microcontroller 312, the deflection controller 314 adjusts the image image to an appropriate size and activates the automatic adjustment system 108 (shown in FIG. 1). The automatic adjustment system 108 transmits the position and size data of the image image to the microcontroller 312 via the digital bus 322 (S622).

The microcontroller 312 determines whether or not the image image is adjusted to an appropriate size (S624). If the image image does not reach an appropriate size value, the microcontroller 312 continues the image image adjustment of step S622. On the other hand, if the image image has reached an appropriate size value, the deflection controller 314 moves the raster scan area to the center of the screen 304. The video detection circuit 308 can find the height of the raster scan (i.e., the number of horizontal scan lines (H lines) occupied by the raster scan area) and the vertical position value Vpos from the deflection controller 314. The microcontroller 312 transmits the raster scan height value and the vertical position value Vpos to the EEPROM 316 for storage (S626).

The microcontroller 312 adjusts the vertical position value Vpos of the deflection controller 314 according to the hexadecimal code 00-FF (ie, the smallest value-the largest value). The video detection circuit 308 detects the shifted value of the video signal in association with the screen 304. Thus, a difference in the distance between the peripheral horizontal scan lines is obtained. As a result, the value of the vertical position value Vpos of the deflection controller 314 required to change the unit distance is known. The shift value detected by the video detection circuit 308 is transmitted by the microcontroller 312 to the EEPROM 316 for storage (S628).

Using the case of Fig. 9 as an example, assuming that the number of horizontal scan lines occupied by the effective video cycle is 512H lines, the raster scan height on the screen 304 is 280 mm, and the vertical position value Vpos of the raster scan area is When adjusted according to 00-FF, the raster scan area moves a full 70mm distance. In other words, the distance between neighboring lines of the horizontal scan line is (280/512) mm and 1mm = (256/70) Vpos. As a result, for the raster scan area for moving the horizontal scan line distance, the vertical position value of the deflection controller 314 should be adjusted to (280/512) * (256/70) = 2Vpos.

10 is a flowchart illustrating steps for a user to initially perform monitor auto adjustment. As shown in FIG. 10 (also refer to FIG. 3), the user initiates an adjustment of the position and size of the image image relative to the screen 304 on the monitor 302. First, the video signal provided from the VGA card 332 (generally 0.7Vp-p according to FIG. 4) is amplified by the video preamplifier 306 (typically 4-4.5Vp-p according to FIG. 4). Therefore, the voltage is increased to a size suitable for use of the video detection circuit 308 (S1002).

The microcontroller 312 determines whether the amplified video signal is a window signal (S1004). If the video signal is a window signal, the microcontroller 312 operates the video detection circuit 308. The video detection circuit 308 extracts data in the video signal. The data in the video signal includes the front and back porch of the horizontal signal, the effective video cycle of the horizontal signal, the front and back porch of the vertical signal, and the effective video cycle of the vertical signal. The microcontroller reads all data in the video signal detected by the video detection circuit 308 (S1006).

According to the data, the microcontroller 312 controls the deflection controller 314 so that the horizontal phase of the image image can be adjusted (S1008). 11 is a flowchart showing steps for performing horizontal phase adjustment of an image image. First, the value of the counter (not shown) is set to zero. Using the bisected method, the horizontal position value Hpos (i.e., the middle value of 00-FF) equal to half of the largest value is provided by the microcontroller 312 to the deflection controller 314 (S1102).

1 is added to the counter (not shown) (S1104) and the count value is compared with a predetermined value (in the embodiment, 8 is selected as the predetermined value) (S1106). If the count value is equal to the predetermined value, the horizontal phase adjustment of the image image is finished. However, if the count is still smaller than the predetermined value, the deflection controller 314 generates a signal for displaying the image image according to the horizontal position value Hpos provided by the microcontroller 312 (S1108). The microcontroller 312 reads the front porch and back porch of the horizontal signal detected by the video detection circuit 308 (S1110).

In addition, the microcontroller 112 determines whether the front porch and the back porch of the horizontal signal are the same (S1112). If the front porch and back porch of the horizontal signal are judged to be the same by the microcontroller 112, the horizontal phase adjustment of the image image is completed. On the other hand, if the front porch and the back porch of the horizontal signal is not the same, the microcontroller 312 again checks whether the back porch is larger or smaller than the front porch (S1114). If the back porch is still larger than the front porch, the microcontroller 312 calculates the horizontal position value Hpos such as Hpos = Hpos-Hpos / 2 (S1116) and returns to step S1104 again. Conversely, if it is determined by the microcontroller 312 that the back porch is smaller than the front porch, the microcontroller 312 calculates the horizontal position value Hpos such as Hpos = Hpos + Hpos / 2 (S1118) and returns to step S1104. .

12 shows adjustment of various horizontal phases of an image image. If the back porch is larger than the front porch, this means that the image image is to the right of the screen 304. Therefore, the horizontal position value Hpos of the deflection controller 314 must be properly adjusted. That is, Hpos = (1/2 of the largest value)-(1/4 of the largest value). Similarly, if the back porch is smaller than the front porch, it means that the image image is biased towards the left side of the screen 304. Therefore, the horizontal position value Hpos of the deflection controller 314 must be properly adjusted. That is, Hpos = (1/2 of the largest value)-(1/4 of the largest value) + (1/8 of the largest value). The above-described process is repeated until the front and back porches have the same value. In the worst case, the process is completed in seven iterations.

According to the video signal data, the microcontroller 312 controls the deflection controller 314 so that the horizontal size of the image image can be adjusted (step S1010 of FIG. 10). 13 is a flowchart showing steps for adjusting a horizontal size of an image image. First, the microcontroller 312 operates the video detection circuit 308. The video detection circuit 308 extracts data in the horizontal video signal. The data in the horizontal video signal includes a front porch, a back porch and an effective video cycle. The microcontroller 312 reads data in the horizontal video signal (S1302) and calculates an effective video signal share for the entire horizontal video signal cycle (S1304).

The microcontroller 312 reads the horizontal size value Hsize corresponding to the effective video cycle of 65% and the horizontal size value Hsize corresponding to the 85% effective video cycle (S1306). Depending on the horizontal size value Hsize corresponding to an effective video cycle of 65% and the horizontal size value Hsize corresponding to an effective video cycle of 65%, the microcontroller 312 can produce an effective video with an effective video cycle rate given by the plug-in method. The horizontal size value Hsize corresponding to the signal can be found (S1308).

을 사용한 내부차이방법은 x%의 효과적인 비디오사이클에 대응하는 수평크기값 Hsize X를 얻는데 사용될 수 있다. 14 is a diagram illustrating finding a horizontal size value from an image image through an internal difference. Suppose the horizontal size value Hsize corresponding to 65% effective video cycle is 1, and the horizontal size value Hsize corresponding to 85% effective video cycle is 2, and the effective video cycle share of the entire horizontal video cycle is x%. expression

The internal difference method can be used to obtain the horizontal size value Hsize X corresponding to an effective video cycle of x%.

The microcontroller 312 sends the calculated horizontal size value Hsize to the deflection controller 314. Therefore, horizontal size adjustment of the image image is performed by the deflection controller 314 (S1310).

According to the input data, the microcontroller 312 controls the deflection controller 314 so that the vertical phase of the image image can be adjusted (step S1012 in FIG. 10). 15 is a flowchart showing steps for adjusting the vertical phase of the image image. First, the microcontroller reads the vertical position value Vpos from the EEPROM 316. The value causes the raster scan area to be located in the center area of the vertical position value Vpos (S1502). Thereafter, the microcontroller 312 operates the video detection circuit 308. The video detection circuit 308 checks whether there is a vertical signal generated by the VGA card 332. The microcontroller 312 reads the front porch and back porch of the vertical signal from the video detection circuit 308 and determines the size of the front porch and back porch of the vertical signal.

The image image is not necessarily located at the center of the screen 304. 16A is a schematic diagram showing a raster scan area located at the center of the screen. Therefore, the image image requires vertical phase adjustment. Fig. 16B is a schematic diagram showing the process of moving the raster scan area according to the position of the image image in the center of the screen. The microcontroller 312 calculates a value according to the formula | vertical front porch | / 2 of the back porch-vertical signal. The calculated value is a value for moving the image image to the center of the screen 304. The value is a unit related to the number of H lines (number of adjusted horizontal scan lines) (S1506).

For example, if the value is a 10H line, the value is converted to the vertical position value y Vpos (S1508). The moving distance of the image image associated with the screen 304 can be found as follows. 10H line * 280mm / 512H line. In other words, the image image should travel a distance of 5.47 mm with respect to the screen 304. Since the vertical position values of the vertical signals all have 256 steps (hexadecimal code 00-FF), y Vpos = 5.47 mm / 70 mm * 256 steps = 20 steps (the figure is rounded to the nearest integer).

The microcontroller 312 performs addition or subtraction of the vertical position value Vpos of the raster scan area and the vertical position value y Vpos of the image image movement to obtain a new vertical position value Vpos (when the back porch is larger than the front porch). Is performed and addition is performed when it is the opposite) (S1510). The microcontroller 312 transmits the new vertical position value Vpos to the deflection controller 314. According to the new vertical position value Vpos, the deflection controller 314 moves the image image to the center of the screen 304 (S1512).                     

The microcontroller controls the deflection controller 314 according to the video data to adjust the vertical size of the image image (step S1014 in FIG. 10). 17 is a flowchart showing steps for performing vertical size adjustment of an image image. First, the microcontroller 312 operates the video detection circuit 308. The video detection circuit 308 detects data in the vertical video signal. The data in the vertical video signal includes a front porch, a back porch and an effective video cycle. The microcontroller 312 reads data in the vertical video signal (S1702) and calculates the occupancy rate of the effective video cycle associated with the entire vertical video signal cycle (S1704).

The microcontroller 312 reads the vertical size value Vsize corresponding to the vertical signal having an effective video cycle of 65% and the vertical size value Vsize corresponding to the vertical signal having an effective video cycle of 85% (S1706). Vertical size value corresponding to an effective video cycle of a given ratio, depending on the vertical size value Vsize corresponding to a vertical signal having an effective video cycle of 65% and vertical size value Vsize corresponding to a vertical signal having an effective video cycle of 85%. Vsize can be known (S1708).

을 사용하여, y%의 효과적인 비디오사이클에 대응하는 수직크기값 Vsize y가 얻어진다. 18 is a diagram illustrating finding a vertical size value from an image image through internal differences. The vertical position value Vsize corresponding to a vertical signal having an effective video cycle of 65% is 1, and the vertical position value Vsize corresponding to a vertical signal having an effective video cycle of 85% is 2 and is effective between the video cycles for the entire vertical video cycle. Suppose the ratio of is y%. Internal difference expression

Using V, a vertical size value Vsize y corresponding to an effective video cycle of y% is obtained.

The microcontroller 312 transmits the vertical size value Vsize calculated by the deflection controller 314 to allow the deflection controller 314 to adjust the vertical size of the image image (S1710).

Once the image image is adjusted to the appropriate position and size relative to the screen 304, the microcontroller 312 returns the amplified parameters of the amplified video signal to the original video values (step 1016 of FIG. 10). If the amplified video signal is not a window signal, the flow returns to step S1016 of FIG.

In summary, the advantage of the present invention is that it does not store the horizontal, horizontal, vertical and vertical phases for various frequency modes. Using a microcontroller that reads video signals, the position and size of the image image relative to the screen is automatically adjusted.

Those skilled in the art will be able to variously modify or modify the structure of the present invention without departing from the scope of the present invention. In view of the foregoing, the invention is susceptible to various modifications and variations provided within the scope of the following claims and their equivalents.

As described above, according to the present invention, the screen automatic adjustment that can automatically adjust the position and size of the image image relative to the screen without storing the horizontal size, horizontal phase, vertical size and vertical phase for various frequency modes A system is provided.

Claims (16)

An automatic adjustment system for adjusting the position and size of an image image in relation to a screen on a monitor, A storage device for storing a horizontal size value, a vertical size value, a vertical position value and a shift value; Provide a horizontal video signal and a vertical video signal to adjust the size of the image image and obtain a horizontal size value and a vertical size value of the image image, store the horizontal size value and the vertical size value in the storage device, and then raster scan. Adjusts the area, and also stores the vertical position value and the shift value of the raster scan area in the storage device, according to the horizontal video signal and the vertical video signal, and the horizontal size value, vertical size value, vertical position value and shift value. Microcomputer for calculating the horizontal position value, ratio value, horizontal scan line value, phase shift vertical position value, plug-in horizontal size value and plug-in vertical size value of the image image used as data in image adjustment by reading from the storage device. Controller; The horizontal video signal, the vertical video signal, the horizontal size value, the vertical size value, the horizontal scan line value, the vertical position value, the shift value, the horizontal position value, the ratio value, the horizontal scan line value, and the phase shift are connected to the microcontroller. A deflection controller that receives data including a vertical position value, a plug-in horizontal size value and a plug-in vertical size value, and transmits a deflection signal to the monitor to adjust the image image as well as a horizontal flyback signal and a vertical flyback signal; ; Coupled to the microcontroller, receiving the horizontal flyback signal and the vertical flyback signal, converting the signals into a horizontal flyback digital signal and a vertical flyback digital signal, and transmitting the digital signals to the microcontroller, And a video detection circuit for receiving data in the preamplifier signal, converting the signal into digital data, and transmitting the digital data to the microcontroller. The method of claim 1, A video preamplifier for amplifying the video signal into a preamplifier video signal; And And a video output amplifier connected to the image preamplifier to further amplify the preamplifier signal into a larger video signal and provide the amplified signal to the monitor so that the monitor can project various image types. Screen automatic adjustment system. The method of claim 2, The video preamplifier may receive a video signal provided by the microcontroller so that automatic adjustment of an image image may be made in relation to the monitor screen before the monitor is released, and the video preamplifier may also be used by the user to use the monitor. And a video signal provided by the VGA card to automatically adjust the image image relative to the monitor screen at startup. The method of claim 1, The deflection controller is connected to the microcontroller, and the horizontal video signal, the vertical video signal, the horizontal size value, the vertical size value, the horizontal scan line value, the vertical position value, the shift value, the horizontal position value, the ratio value and the phase shift. A deflection processor for converting the received digital data into a related deflection electrical signal according to the received digital data including a vertical position value, a plug-in horizontal size value and a plug-in vertical size value; And Coupled to the deflection processor, receiving the deflection electrical signal, converting the signal into an ultra high voltage deflection electrical signal, transmitting the ultra high voltage deflection electrical signal to a monitor, and a horizontal flyback signal and a vertical flyback signal; And a deflection / ultra high voltage circuit, which transmits a result of the same deflection shifting to the video detection circuit. The method of claim 1, The video detection circuit further comprises a screen display unit for generating a communication frame when adjusting the image image. The method of claim 1, And said storage device comprises an EEPROM (Electrically Erasable Programmable Read Only Memory). In the automatic adjustment method for adjusting the position and size of the image image in relation to the monitor screen before the monitor is released, Providing a horizontal signal having a first effective video cycle rate and a vertical signal having a first effective video cycle rate; Appropriately adjusting the size of the image image according to the vertical signal having the first effective videocycle rate and the first effective videocycle rate; Recording the first horizontal size value and the first vertical size value of the image image; Providing a horizontal signal having a second effective video cycle rate and a vertical signal having a second effective video cycle rate; Appropriately adjusting the size of the image image according to the horizontal signal having the second effective video cycle rate and the vertical signal having the second effective video cycle rate; Recording a second horizontal size value and a second vertical size value of the image image; Providing a signal having both a vertical front porch and a vertical back porch at zero; Recording a horizontal scanline value that is the sum of the vertical front porch, the vertical back porch, and the horizontal scan line of an effective video cycle; Adjusting the image image to an appropriate size; Measuring a height of the raster scan area and recording a vertical position value corresponding to the height; And adjusting the vertical position value according to a vertical adjustment range and recording the shift value according to the relationship between the vertical position value and the horizontal scan line value. The method of claim 7, wherein Before the first horizontal size value and the first vertical size value of the image image are recorded, determining whether the image image is adjusted to an appropriate size; otherwise, resizing the image image. Automatic adjustment method. The method of claim 7, wherein Before the second horizontal size value and the second vertical size value of the image image are recorded, it is determined whether the image image has been adjusted to an appropriate size, and if not, resizing the image image. How to adjust. The method of claim 7, wherein And before the height of the image image is measured and the corresponding vertical position value is recorded, determines whether the image image has been scaled to an appropriate size, and if not, resizes the image image. In the automatic adjustment method for adjusting the position and size of the image image relative to the monitor screen, Reading a plurality of data in the amplified video signal; Adjusting a horizontal phase of the image image according to the data; Adjusting the horizontal size of the image image according to the data; Adjusting a vertical phase of the image image according to the data; And adjusting the vertical size of the image image in accordance with the data. The method of claim 11, Reading data in the amplified video signal, Amplifying the video signal into a detectable signal range; Determining whether the amplified video signal is a window signal or not; Reading data in the amplified video signal if the amplified video signal is a window signal; And resetting an amplified parameter value in the amplified video signal back to the original parameter value. The method of claim 12, And the data in the amplified video signal comprises a horizontal front porch, a horizontal back porch, an effective horizontal video cycle, a vertical front porch, a vertical back porch, and an effective vertical video cycle. The method of claim 13, Adjusting the horizontal phase of the image image according to the data, Setting a counter to zero and setting a horizontal position value of the image image to a middle value of a vertical adjustment range; Adding 1 to the counter value; Determining whether the counter reaches a predetermined value; Finishing the horizontal phase adjustment of the image image when the counter reaches the predetermined value; Displaying the image image according to the horizontal position value if the counter has not reached the predetermined value; Reading the horizontal front porch and the horizontal back porch; Determining whether the horizontal front porch and the horizontal back porch are the same; Finishing the horizontal phase adjustment if the horizontal front porch is equal to the horizontal back porch; Determining whether the horizontal back porch is greater than the horizontal front porch; Returning to subtracting a predetermined value from the horizontal position value and adding 1 to the counter value if the horizontal back porch is larger than the horizontal front porch; And if the horizontal back porch is smaller than the horizontal front porch, adding a predetermined value to the horizontal position value and returning to adding a counter value to the counter value. The method of claim 13, Adjusting the horizontal size of the image image according to the data, Reading the amplified video signal; Calculating to find a ratio of the effective horizontal video signal to the amplified total video signal; Reading a first horizontal magnitude value corresponding to a horizontal signal having a first effective video cycle ratio and a second horizontal magnitude value corresponding to a horizontal signal having a second effective video cycle ratio; A horizontal signal having a first effective video cycle rate, a horizontal signal having a second effective video cycle rate, and a horizontal horizontal signal having an effective horizontal video signal for the whole amplified video signal according to the first horizontal size value and the first horizontal size value. Using a plug-in method to obtain a plug-in horizontal size value corresponding to the ratio;  And adjusting the horizontal size of the image according to the plug-in horizontal size. The method of claim 13, Adjusting the horizontal size of the image image according to the data, Reading the effective vertical video cycle; Calculating to find a ratio of the effective vertical video signal to the amplified total video signal; Reading a first vertical magnitude value corresponding to a vertical signal having a first effective video cycle rate and a second vertical magnitude value corresponding to a vertical signal having a second effective video cycle rate; Obtaining a plug-in vertical size value corresponding to the ratio according to the vertical signal having a first effective video cycle rate, the vertical signal having a second effective video cycle rate, a first vertical magnitude value and a second vertical magnitude value. Using a plug-in method; And adjusting the vertical size of the image image according to the plug-in vertical size.

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