KR100574935B1 - Method and apparatus for adjusting contrast and sharpness for regions in a display device - Google Patents

Abstract

A system for displaying an image is disclosed. The system includes an area selector for setting a predetermined area in a displayed image; And a parameter control circuit for selecting image adjustment parameters for adjusting a method and a place for highlighting the predetermined area in the displayed image. The area selector and the parameter control circuit are preferably located in a display device or a computer. Preferably, the display device is a CDT, TFT-LCD, or PDP, and the area selector is a pointing device or a hot-key, and the area selector may select areas of a rectangle and non-squares. The system has an effect of optimally providing various contents by adjusting contrast and sharpness of a partial region desired by a user.

Contrast

Description

Device and method for controlling the contrast and sharpness of regions in a display device {Method and apparatus for adjusting contrast and sharpness for regions in a display device}

The detailed description of each drawing is provided in order to provide a thorough understanding of the drawings cited in the detailed description of the invention.

1 shows a block diagram of a conventional computer system.

2 shows a block diagram of a computer system with contrast and sharpness control circuitry.

3 shows a detailed block diagram of the computer system shown in FIG.

4 shows a block diagram of the contrast and sharpness control circuit.

5 shows a method of setting a partial region using a user adjustment device.

Fig. 6A is a block diagram showing a method of transferring predetermined information from a computer to a monitor using S / W.

6B is a timing diagram illustrating an exception process.

6C illustrates different windows appearing on the monitor screen.

6D is a block diagram illustrating a method of processing messages by a hooking program.

6E is a flowchart showing the operation of the hooking program of FIG. 6D in detail.

6F illustrates how the position of the selected region changes according to the positional change of the window including the selected region.

6G illustrates how the position of the selected region changes according to the size change of the window including the selected region.

7 illustrates a method of setting a non-rectangular region by an external enable signal.

8 is a timing diagram illustrating a method of compensating for an error using a two-stage PLL.

9 is a timing diagram illustrating a method of compensating for an error using a horizontal sync signal and an active video signal detected by an IVP.

10 is a timing diagram illustrating a method of compensating for an error using information output from a graphics card and an active video signal.

FIG. 11 is a timing diagram illustrating a method of highlighting a partial region when the entire screen is displayed in blue.

12 is a timing diagram illustrating a method of highlighting a partial region when the entire screen is displayed in white.

13 shows a block diagram of the contrast and sharpness control circuit according to the present invention.

FIG. 14 illustrates a block diagram of the highlighting enable signal generation circuit of FIG. 13.

FIG. 15 shows a block diagram of the amplifier circuit of FIG.

FIG. 16 shows a block diagram of the IBLK interface circuit of FIG. 15.

17 shows a detailed circuit diagram of the conversion circuit of FIG. 15.

FIG. 18 shows a detailed configuration diagram and output waveform of the contrast / sharpness control circuit of FIG. 13.

19 illustrates output waveforms of the sharpness control circuit and the video amplifier when the highlighting enable signal is activated.

20 is a timing diagram of input and output waveforms of the gain control circuit when the highlighting enable signal is activated.

21 illustrates a picture of a video having a highlighted subregion according to an embodiment of the present invention.

The present invention relates to a computer system, and more particularly, to a method of setting a predetermined area of a monitor screen and a method of controlling the contrast and / or sharpness of the set area. And it relates to a system for transmitting information about the selected area from the computer to the display device.

Generally, televisions are designed to display moving pictures, while computer monitors are designed to display text images. Various multimedia content includes texts, photos, videos and games.

Sharpness indicates how sharply and distinctly the outline of an object displayed on a display device can be represented. Conventional computer monitors are designed to display text images with lower contrast and sharpness than television screens. In other words, computer monitors are not suitable for displaying moving pictures.

1 shows a conventional computer system having a video signal source 1, a preamplifier 3, a main amplifier 5, and a CDT (color display tube) 7. The CDT 7 includes any kind of display device including thin film transistor-liquid crystal displays (TFT-LCDs) and plasma display panels (PDPs).

The CDT 7 represents a display device capable of displaying video signals R / G / B received from a computer. The video signal generator 1 of the computer outputs video signals, i.e., red video signal, green video signal and blue video signals R / G / B to the monitor. The preamplifier 3 receives and amplifies the input red video signal, the green video signal and the blue video signals R / G / B, and the main amplifier 5 amplifies the output signals of the preamplifier 3. .

The conventional computer system shown in FIG. 1 has a problem in that it is not possible to properly adjust the sharpness and contrast of the areas in which moving images are displayed. For example, the CDT 7 normally displays text on a screen. The text does not require the same contrast and sharpness as is required for moving images. Therefore, the contrast and sharpness must be increased in order to display the moving pictures clearly on the CDT 7.

However, if the contrast and sharpness of the moving pictures are increased too much, the CDT 7 may be physically damaged. That is, the conventional CDT 7 has a problem in that it does not increase the contrast and sharpness as desired by the user in order to effectively display moving images.

Accordingly, a technical problem to be achieved by the present invention is to provide a semiconductor device, a system, a contrast and / or sharpness of a partial region in which a contrast and / or sharpness of a desired partial region can be adjusted as desired by a user in a display device displaying a moving image. To provide a way to control,

It is also an object of the present invention to provide an image processor, video processing system, and display apparatus capable of controlling contrast and / or sharpness of a predetermined subregion.

The system for displaying an image for achieving the technical problem comprises a region selector for setting a predetermined region in the displayed image; And a parameter control circuit for selecting image adjustment parameters for adjusting a method and a place for highlighting the predetermined area in the displayed image.

The area selector and the parameter control circuit are preferably located in a display device or a computer. Preferably, the display device is a CDT, TFT-LCD, or PDP, and the area selector is a pointing device or a hot-key, and the area selector can select areas of a rectangle and non-squares.

The parameter control circuit generates image adjustment parameters for increasing or decreasing the gain of the video signals for the selected area. The parameter control circuit generates image adjustment parameters for increasing or decreasing the sharpness level for the selected area, or generates image adjustment parameters for controlling the sharpness function for the selected area.

The system has an interface for transmitting the image adjustment parameters between a computer and a display device independently of the video signals for the image, wherein the image adjustment parameters are communicated via a universal serial bus. Is sent from the computer to the display device.

A system for controlling highlighting of an image for achieving the technical problem includes generating video signals, identifying a selected region among the video signals, and an image adjusting parameter for identifying and adjusting the selected region among the video signals. A computer to identify them; And an interface for transmitting selected image adjustment parameters separately from the video signals.

The interface has a first port for transmitting the image adjustment parameters and a second port for transmitting the video signals, the first port being a universal serial bus port, a serial port, a plug-and-play port, Preferably, the parallel port, or optical fiber port, and the second port is a graphics card port.

The image adjustment parameters and the video signals are transmitted through the same port, and the computer compensates for the image adjustment parameters generated due to the difference between the computer and the coordinate system of the display device for displaying the video signals. The image adjustment parameters adjust the contrast and sharpness of the selected area.

The computer automatically deactivates highlighting of the selected area when the window including the selected area is deactivated, and the computer automatically adjusts the size and position of the selected area according to the size and position of the window including the selected area. Variable.

According to another aspect of the present invention, a method of highlighting a predetermined area within a window includes highlighting a selected area within a window; Moving highlighting for the selected area with movement of the window.

The control method highlights the selected area when the window is activated, and deactivates highlighting of the selected area when the window is deactivated.

The control method may include disabling highlighting of the selected area when the window is minimized or another window is activated; And automatically highlighting another selected area within the other window when the other window is activated.

The control method automatically varies the size and position of the selected area according to the size and position of the window. The control method includes selecting a non-rectangular region within the window for highlighting; Generating signals indicative of the non-square area; And using the signals to highlight the non-rectangular region in the display device.

The control method comprises the step of selecting the area using a user control device (OSD). The control method includes storing a handle and an area; Hooking a message; When the message is activated, generating the selected region from stored handles and regions; And when the message is deactivated, turning off highlighting.

The control method adjusts the position of the selected area according to the difference between the resolution of the computer and the resolution of the display device. The control method transmits information for identifying the selected area to the display apparatus through an interface different from the interface for transmitting the video signals to the display apparatus.

The control method includes automatically displaying a predetermined window on a display device; When the predetermined window is selected, using the predetermined window as the selected area; Automatically adjusting the size or position of the predetermined window when the predetermined window is not selected; And when the adjusted predetermined window is selected, using the adjusted predetermined window as the selected area.

The control method includes automatically displaying the predetermined window in an area in which moving images are displayed. The control method includes detecting a change in frequency or horizontal resolution by using output video signals; And automatically changing the size or position of the selected area in accordance with the detected change in frequency or horizontal resolution.

The method for highlighting a predetermined area on a screen for achieving the technical problem comprises the steps of: checking position information of a predetermined area in an image selected for highlighting; Identifying resolution characteristics for video signals including the image in a coordinate system of a PC; Identifying resolution characteristics of a display device displaying the video signals within a coordinate system of the display device; And adjusting the position information of the selected area according to a difference between resolution characteristics of the video signals and resolution characteristics of the display apparatus.

The area information is adjusted by HRes: MousePos = Mode: x, where HRes represents a horizontal resolution of the video signals, MousePos represents a coordinate of a mouse pointer, and Mode represents a video signal using a circuit that generates a clock. Indicates a horizontal resolution generated from the symbol x, and x denotes the positional information displayed on the display device.

Or the area information is [Mode-(Δdot_l + Δdot_r): x '= HRes: MousePos

x '= [Mode-(Δdot_1 + Δdot_r) × MousePos] / HRes

x = x '+ Δdot_l, where Mode represents the resolution of the horizontal synchronizing signal determined by the PLL, x represents the selected position displayed on the display device corresponding to the mouse position MousePos, and Δdot_1 represents the horizontal synchronizing signal Δdot_r represents the time until the video signals are activated after activating, Δdot_r represents the time until the horizontal synchronization signal is deactivated after the video signal is deactivated, and HRes represents the horizontal resolution of the video signals.

Alternatively, the area information is adjusted by Htotal: (Hstart + MousePos) = Mode: x, where Htotal indicates the total number of pixels output in the horizontal direction, and Hstart indicates the starting position of the video signals with respect to the start of the horizontal synchronization signal. Where MousePos represents the actual position of the mouse, Mode represents the measured horizontal resolution, and x represents the position corresponding to the actual position of the mouse used to highlight the selected area.

The method of highlighting comprises measuring the resolution of the video signals; Determining the location information for the selected area in the computer using the measured resolution; And transmitting the area information to the display device to highlight the selected area.

The method may further include measuring a resolution of a horizontal synchronization signal or the video signals; Checking the horizontal resolution measured with respect to the video signals; Checking the position of the mouse; And determining the location of the selected area according to the measured resolution, the HRes, and the MousePos.

An image processor for achieving the technical problem is an input terminal for receiving video signals; An input terminal for receiving region information for highlighting a predetermined region in the video signals; And a control circuit for changing the video signals according to the area information. The control circuit is located in the display device.

The control circuit includes a highlighting signal generation circuit for generating highlighting signals related to the area information; And an amplifier circuit for varying a gain of the video signals according to the highlighting signals.

The highlighting signal generating circuit includes a data receiver for converting serial position information and area information into parallel data; A system clock generation circuit for receiving a horizontal synchronization signal and a vertical synchronization signal and outputting a system clock signal, a vertical pulse signal, and a horizontal pulse signal; A control register for latching the parallel data output from the data receiver according to the system clock; And a highlight region control circuit for converting the parallel data into the highlighting signals.

The amplifier circuit includes a control signal generation circuit; And a gain control circuit. The control signal generation circuit has an area signal interface for generating a switching control signal in accordance with the highlighting signals. The control signal generation circuit has an I2C bus interface for latching the area information according to a system clock.

The control signal generation circuit includes a conversion circuit for converting the area information into analog contrast control signals. The conversion circuit includes a digital-analog conversion circuit and a tanh ^-1 processor. The control signal generation circuit includes a contrast and sharpness control circuit for generating sharpness control signals in response to the area information.

The gain control circuit includes a video clamp circuit for clamping the video signals to a predetermined range. The gain control circuit includes a sharpness control circuit for varying the gain and peak width of the video signals.

The gain control circuit controls channel contrast for controlling the gain of the red video signal input to the red channel, the gain of the green video signal input to the green channel, or the gain of the blue video signal input to the blue channel according to the area information. Do the circuit.

The gain control circuit includes a contrast control circuit that can simultaneously control the gain of the red video signal input into the red channel, the gain of the green video signal input into the green channel, and the gain of the blue video signal input into the blue channel.

The gain control circuit includes a sharpness and contrast circuit for highlighting the selected area; A buffer for buffering the video signals; A switching circuit for switching the video signals between the sharpness and contrast circuit and the buffer; And a mixer for combining the video signals output from the sharpness and contrast circuit with the video signals output from the buffer.

A video processing system for achieving the technical problem includes a user input for selecting region regions in an image and selecting region adjustment parameters for adjusting a method of displaying the selected region in the image; And an image processor for highlighting the selected area in accordance with the area adjustment parameters.

The area adjustment parameters confirm the contrast and sharpness for the selected area. The image processor includes an area setting circuit for storing area information and adjustment parameters for the selected area.

The video processing system includes a main control circuit that enables horizontal line signals to highlight the selected areas. The video processing system has a region selector that automatically generates default windows for use with the selected region.

The area selector automatically adjusts the size and position of the default window until one of the default windows is selected as the selected area. The video processing system automatically adjusts the selected area according to the horizontal resolution of the graphics card.

The display apparatus for achieving the technical problem is to adjust the level of the video signal corresponding to the area information and the adjustment information of the video signals in response to the area information, adjustment information and video signals and to adjust the adjusted video signal. Output contrast and sharpness adjustment circuits; An amplifier circuit for amplifying the adjusted video signal and outputting an amplified and adjusted video signal; And a color display device for outputting an adjusted video signal in response to an output signal of the amplifying circuit, wherein the area information is location information on a partial area selected by a user among the entire screens displayed on the display device. The adjustment information is information related to contrast and sharpness of the partial region.

A method of adjusting contrast and sharpness in a display device includes region information on a position of a partial region selected by a user among full screens displayed on the display apparatus, and adjustment information related to adjusting contrast and sharpness of the video signal and the partial region. Receiving: adjusting the level of the video signal corresponding to the area information and the adjustment information of the received video signals and outputs the adjusted video signal; And increasing or decreasing contrast and sharpness of the partial region in response to the adjusted video signal.

The display apparatus receives position information regarding the position of the partial region selected by the user and adjustment information for adjusting the contrast and sharpness of the partial region among the entire screens displayed by the display apparatus through the first interface, and the second interface. A contrast and sharpness adjustment circuit for adjusting a level of a video signal corresponding to the area information and adjustment information among the video signals received through the controller, and outputting the adjusted video signal; An amplifier circuit for amplifying the adjusted video signal; And a color display device displaying the amplified video signal output from the amplifying circuit.

The contrast and sharpness adjustment circuit includes an area setting circuit for receiving and storing the area information regarding the size and position of the partial area and for receiving and storing the adjustment information input in response to a control signal; And a highlighting adjuster for increasing or decreasing contrast and sharpness of the partial region in response to the output signals of the region setting circuit.

A computer system including a display device for displaying predetermined video signals input from a computer may include position information regarding a position of a partial region selected by a user among the entire screens displayed by the display apparatus, and contrast and sharpness of the partial region. Area information and adjustment information generation circuit for generating adjustable adjustment information; And a transmission interface for transmitting an output signal including the area information and the adjustment information to the display device, the display device comprising: a first interface for receiving an output signal output from the transmission interface; Contrast for adjusting the level of the video signal corresponding to the area information and the adjustment information among the video signals received through the second interface, and outputting the adjusted video signal in response to the output signal received at the first interface. And a sharpness adjustment circuit; And a color display device for displaying the adjusted video signal.

The contrast and sharpness adjustment circuit includes an area setting circuit for receiving and storing the area information including the adjustment information input in response to the size, position and control signal of the partial area; And a highlighting circuit for increasing or decreasing contrast and sharpness of the partial region in response to an output signal output from the region setting session.

A method of adjusting contrast and sharpness may include setting a desired partial region among full screens displayed on a display apparatus through a predetermined input device: region information regarding the position of the partial region and contrast and sharpness of the partial region. Transmitting the adjustment information for adjusting the information to the first interface of the display apparatus through the transmission interface of the computer; A video signal adjusted in response to the area information and the adjustment information received through the first interface by adjusting the level of the video signal corresponding to the area information and the adjustment information among the video signals received through the second interface. Outputting; And increasing or decreasing contrast and sharpness of the partial region in response to the adjusted video signal.

A method of adjusting contrast and sharpness of a partial area selected by a user among full screens displayed by using an on screen display includes displaying a default window having a predetermined size at a predetermined position: by a user Changing the size or position of the default window; And adjusting the contrast and sharpness of the default window by adjusting the level of a predetermined video signal among the received video signals in response to the area information and the adjustment information, wherein the area information indicates the size or position of the default window. And the adjustment information is information for adjusting the contrast and sharpness of the default window.

The semiconductor device may include an enable signal generation circuit configured to receive position information on a partial region selected by a user among full screens displayed on the display device, and output decoded position information; And an amplifier circuit configured to receive a video signal and an enable signal activated in the partial region and to control contrast and sharpness of the partial region during a period in which the enable signal is activated, wherein the amplified circuit includes the decoded position. In response to the information, the contrast and sharpness of the subregion are increased or decreased.

In addition, the semiconductor device may include an enable signal generation circuit configured to receive position information on an area selected by a user among full screens displayed on the display device and output decoded position information; And an amplifier circuit for receiving a video signal and an enable signal activated in the partial region and controlling a gain of the video signal during a period in which the enable signal is activated, wherein the amplification circuit responds to the decoded position information. Increase or decrease the gain, peak, and width of the video signal.

A display device capable of adjusting the contrast and sharpness of a predetermined partial region selected by a user in a full screen displayed by the display apparatus receives a video signal and position information for the partial region and enables an enable signal activated in the partial region. A contrast and sharpness adjustment circuit for generating a signal and controlling a gain of the video signal during a period in which the enable signal is activated; And a display portion for amplifying and displaying an output signal of the contrast and sharpness adjustment circuit, wherein the contrast and sharpness adjustment circuit increases or decreases the gain of the pulse, the pulse width, and the video signal in response to the position information. .

The contrast and sharpness adjustment circuit includes an enable signal generation circuit for receiving the position information about the partial region set by a user and outputting decoded position information; And an amplifier circuit configured to receive the video signal and the enable signal and to control contrast and sharpness of the partial region during a period in which the enable signal is activated, wherein the amplifier circuit is configured to respond to the decoded position information. Increase or decrease the contrast and sharpness of the subregions.

Or the contrast and sharpness adjustment circuit includes an enable signal generation circuit for receiving the position information about the partial region set by a user and outputting decoded position information; And an amplifier circuit for receiving the video signal and the enable signal and controlling the gain of the video signal during a period in which the enable signal is activated, wherein the amplification circuit responds to the decoded position information. Increase or decrease the peaks, peak widths, and gains of.

The amplifier circuit includes an interface for generating a first switching signal in response to the enable signal; A sharpness control signal for receiving a peak gain control signal for controlling the gain of the peak of the video signal, a peak width control signal for controlling the peak width of the video signal, and the decoded position information for generating a second switching signal. Generating circuit; A channel gain control signal for controlling gain of each of the red channel, the green channel, or the blue channel in response to the decoded position information, and simultaneously the gains of the red channel, the green channel, and the blue channel in response to the decoded position information. A contrast control signal generation circuit for generating a gain control signal for controlling; A switching circuit which transmits the video signal in response to the first switching signal; A sharpness control circuit for controlling the peak and the peak width of the video signal input through the switching circuit in response to the peak gain control signal and the peak width control signal; A channel contrast control circuit for adjusting a gain of an output signal of the sharpness control circuit in response to the channel gain control signal; A contrast control circuit for adjusting an output signal of the channel contrast control circuit in response to the gain control signal; An input buffer for buffering an output signal of the switching circuit; And a mixer for coupling the output signal of the input buffer and the output signal of the contrast control circuit.

The display apparatus includes an enable signal generation circuit for receiving the position information about the partial region set by a user among the entire screens displayed by the display apparatus and outputting the decoded position information; And an amplifier circuit for receiving the video signal and the enable signal activated in the partial region and controlling the contrast and sharpness of the partial region during a period in which the enable signal is activated. In response to the positional information, the contrast and sharpness of the video signal are increased or decreased.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

2 illustrates a computer system according to an embodiment of the invention. The computer has a video signal source 1. The monitor has an image view processor (IVP) 9, a preamplifier 3, a main amplifier 5 and a CDT 7. The video signal generator 1 outputs the video signal Vinv including the red video signal, the green video signal, and the blue video signals R / G / B to the IVP 27 of the monitor.

The IVP 27 according to the present invention is manufactured as a semiconductor device as an example of an image processor. The CDT 7 includes any kind of display device including a TFT-LCD and a PDP.

IVP 27 adjusts the contrast and sharpness of the selected area. The area selected by the user among the areas displayed on the monitor of the computer is called a "partial area". Information generated by the computer related to the selected area is referred to as "area information" or "location information". Information for adjusting the contrast and / or sharpness of the partial region is called "adjustment information".

The IVP 27 adjusts or changes the output signal Vinv, that is, the video signal level of the video signal source 1, in accordance with the area information, position information and adjustment information. That is, the IVP 27 is a parameter control circuit that can select image adjustment parameters for adjusting the method and location (position) for highlighting the partial region in the image displayed on the CDT 7 screen. Image adjustment parameters include position information, area information, or adjustment information. The image adjustment parameters can thus adjust the contrast and / or sharpness of the subregions.

In addition, the parameter control circuit 27 generates image adjustment parameters for increasing or decreasing the gain of the video signals for the selected subregion, or increases or decreases the sharpness level for the selected subregion. Image adjustment parameters for generating the image adjustment parameters, or image adjustment parameters for controlling the sharpness function for the selected subregion.

A pointing device including a peripheral device connected to the computer, such as a mouse, generates position information indicating upper left and lower right coordinates of the partial region.

The computer generates the area information indicating the size of the partial area set by the location information. R / G / B signals Vinv, location information, area information, and adjustment information are transmitted to IVP 27 via a predetermined interface. The predetermined interface may be implemented as a serial port, a parallel port, a universal serial port (USB) port, or an optical fiber port.

The output signals Vinv of the video signal generator 1 can be transmitted to the IVP 27 through one interface, and the position information, the area information and the adjustment information are the same interface as the interface for transmitting the output signals Vinv. It may be transmitted to the IVP 27 through, or may be transmitted to the IVP 27 through an interface different from the interface for transmitting the output signals Vinv.

The IVP 27 receives the output signals Vinv of the video signal source 1 and increases or decreases the gain of the output signals Vinv corresponding to the position information, the area information and the adjustment information, and the video signals. (Vout) is output to the preamp 3. The IVP 27 converts the location information and area information according to the resolution of the CDT 7.

When the gain of the R / G / B signals Vinv increases, the contrast and sharpness of the subregions increase. However, when the gain of the R / G / B signals Vinv decreases, the contrast and sharpness of the subregions decrease.

The preamp 3 amplifies the R / G / B signals Vout. That is, the contrast and sharpness of the partial region are adjusted. The main amplifier 5 receives and amplifies the output signals of the preamplifier 3. The CDT 7 receives and displays the output signals of the main amplifier 5.

3 is a detailed block diagram of the computer system 100 shown in FIG. Computer system 100 includes a computer 100 and a monitor 200. The computer 10 includes the same input device 11 as a pointing device including a mouse, software (S / W) 13 for setting a partial area and providing a user interface, and position information generated by the S / W 13. And a USB interface 15 for transmitting area information, adjustment information, and the like to the monitor 20. An operating system (O / S) 17 controls and manages the computer 10.

The input device 11 is a kind of area selector for setting a partial area selected by the user among the full screens displayed on the CDT 7 of FIG. 2 and includes a device such as a pointing device. The input device 11 may select areas that are rectangular or not rectangular.

The graphics card G / C 19 is an expansion card which enables to display the graphic data (for example, R / G / B) output from the CPU (not shown) on the monitor site 20.

The monitor 20 has a USB interface 21, a main control unit 25, a user control device 23 (on screen display) and an IVP 27. The monitor having the IVP 27 according to the present invention can be used as a system for displaying an image, a system for controlling the highlighting of an image, a video processing system, a display device, and the like.

The USB interfaces 15 and 21 according to the embodiment of the present invention may use a serial port or a plug-and play interface which is typically used between the computer 10 and peripheral devices. . The peripheral devices may be an audio player, joystick, keyboard, telephone, scanner or printer.

Any interface, such as a serial port, a parallel port, an optical fiber port, a USB port, may be used to transmit signals between the computer 10 and the monitor 20 according to the present invention.

The USB 21 is electrically connected to the USB 15 in order to transmit area information generated from the computer 10 to the main control unit 25. MCU 25 controls the operation of IVP 27 in response to signals received from USB 21 or signals received from OSD 23.

The IVP 27 adjusts the contrast and sharpness of the partial region selected by the user according to the signal output from the MCU 25. The interface for transmitting R / G / B video signals to the IVP 27 is the same as the USB interface 15 used for transmitting area information and adjustment information or transmits R / G / B video signals to the IVP 27. The interface may be different from the USB interface 15 used to transmit area information and adjustment information.

For example, if image adjustment parameters including position information, area information, or adjustment information are transmitted from the computer 10 to the monitor 20 through the first port, the video signals are transmitted to the computer 10 through the second port. May be sent to the monitor 20. In addition, image adjustment parameters and video signals may be transmitted from the computer 10 to the monitor 20 through the same port.

The first port may be a USB port, a serial port, a plug-and-play port, a parallel port, or an optical fiber port, and the second port may use a graphics card port.

The IVP 27 may receive R / G / B video signals output from the G / C 19 and may increase or decrease the contrast and / or sharpness of the partial region corresponding to the position information and / or the region information. have. This is called "highlighting".

The IVP 27 has an input terminal for receiving video signals and an input terminal for receiving region information for highlighting a predetermined partial region corresponding to the video signal. In some cases, an input terminal for receiving video signals and an input terminal for receiving region information for highlighting a predetermined partial region corresponding to the video signal may be the same.

The OSD 23 may adjust the brightness of the images or characters on the screen, the brightness of the background areas of the image, and adjust the size of the screen by using a zoom out or zoom in command. The OSD 23 functions as an area selector for setting a partial area.

That is, the OSD 23 selects a partial region within the image displayed on the display device and adjusts a method of displaying the selected partial region (for example, moving the position of the partial region, resizing, highlighting, etc.). It is an input device to select them. Region adjustment parameters can identify or adjust the contrast and / or sharpness for the selected subregion.

The user may manually select the partial region using the OSD 23, and the MCU 25 transmits the region information set by the OSD 23 to the IVP 27. IVP 27 adjusts the contrast and / or sharpness of the selected subregion. The partial region can be selected using the S / W 13 of the computer 10.

The selected area information and adjustment information are transmitted from the computer 10 to the monitor 20 via the USBs 15 and 21. S / W 13 receives a message generated from O / S 17. For example, the S / W 13 acquires the selected area information by the user pointing and clicking different positions on the monitor screen using the mouse 11.

The S / W 13 receives the current setting information for the monitor 20 output from the G / C 19. The S / W 13 compensates for an error caused by a difference in resolution or a coordinate system between the computer 10 and the monitor 20, and the error is detected through the USB interface 15. Output the calibrated area information and adjustment information.

The MCU 25 formats the signal output from the USB 21 using the I 2 C protocol and outputs the result to the IVP 27. The IVP 27 adjusts the video signals output from the G / C 19 for the selected partial region according to the region information and the adjustment information. For example IVP 27 increases or decreases the contrast and / or sharpness of the subregions.

4 shows a block diagram of the IVP 27 including the area setting section 41 and the highlighting section 43. As shown in FIG. The area setting circuit 41 includes area information and adjustment information registers 42 for storing information related to the size, position, contrast and sharpness of the partial area selected by the user.

The area setting circuit 41 outputs area information and adjustment information for the partial region to the highlighting adjustment circuit 43. The highlighting adjustment circuit 43 adjusts the contrast and sharpness for the partial region to the level specified by the user. Errors in the area information are compensated by the highlighting adjustment circuit 43 in response to the data signal SDA and the clock signal SCL or in response to the external enable signal EXEN.

The data signal SDA and the clock signal SCL may be transmitted from the MCU 25 to the IVP 27 using the I2C protocol. The external enable signal EXEN is generated from the MCU 25 in response to the signals generated by the S / W 13 or the OSD 23. The external enable signal EXEN is used to select a partial region having no rectangular shape.

5 is a flowchart illustrating a method of selecting a partial region using the OSD 23 independently of the computer 10. Referring to FIG. 5, the user starts setting a partial region of the entire screen displayed on the display apparatus (step 50). A default window having a predetermined size is output at a predetermined position (step 51). Step 52 determines whether the default window output in step 51 matches the desired area of the user.

The area desired by the user is determined by the user using a button or other user interface on the OSD 23. If it is determined in step 52 that the default window matches the desired area of the user, the current window is set as the default window (57), and the area setting is completed (step 58).

However, as a result of the determination in step 52, if the default window does not match the desired area of the user, the output window is automatically or manually moved to another place (step 53). Step 54 determines whether the moved window matches the desired area of the user. If the moved window matches the desired area of the user, the moved window is set as a default window (step 57), and the area setting ends. (Step 58).

 However, as a result of the determination in step 54, when the moved window does not match the desired area of the user, the size of the moved window is automatically or manually adjusted (step 55). For example, if a window is not the desired area, the user can press another button on the OSD. Optionally, the OSD waits for a certain time and the default window can be moved to a new position or changed to a new size if the user does not press any button within the predetermined time.

If the adjusted window does not match the area desired by the user, the window adjusting procedure is returned to step 52 to execute steps 52 to 58 again. The final area information and adjustment information determined in FIG. 5 are transmitted to the IVP 27 through the MCU 25. IVP 27 highlights the area.

That is, the method of adjusting the contrast and sharpness of the partial region selected by the user among the entire screens displayed by using the On Screen Display displays a default window having a predetermined size at a predetermined position, Change the size or position of the default window and adjust the contrast and sharpness of the default window by adjusting the level of a predetermined video signal among the received video signals in response to the area information and the adjustment information. It represents the size or position of the default window and the adjustment information is information for adjusting the contrast and sharpness of the default window.

FIG. 6A is a block diagram illustrating a method of transmitting area information and adjustment information for a partial area set by S / W to the IVP 27. FIG. The S / W 13 generates area information and adjustment information and outputs it to the USB 15. The USB 15 transmits the area information and the adjustment information to the MCU 25 through the USB 21. The MCU 25 converts the area information and the adjustment information into an I 2 C protocol and outputs the result to the IVP 27.

The IVP 27 highlights the partial area according to the area information and adjustment information generated by the S / W 13. That is, the IVP 27 receives video signals, area information and adjustment information, and adjusts contrast and sharpness corresponding to the area information and adjustment information.

S / W 13 receives a message from O / S 17 when pointed and clicked by the mouse of FIG. The S / W 13 sets the partial area desired by the user according to the inputs of the mouse 11. The selected area can be any window, object, full screen, any area set by the user manually using the mouse 11, or any area set by auto selection. Include.

The window refers to the top-most window where the mouse point is located, and the object refers to the bottom-most window where the mouse point is located. A region is generally a quadrangle, but also includes a non-square region (eg, a circle, a polygon, etc.) when using an external enable signal, which will be described later. A full screen is a part set to full screen to be suitable for a game or the like.

Auto selection automatically selects the partial area in which movies are displayed. The auto-selection prevents damage to the CDT 7 shown in Fig. 2, which occurs when a user mistakenly selects an area where text is displayed. Auto-selection can be used for video games that need to highlight the entire screen in order to display the video.

The S / W 13 searches for a Windows system file such as a registry, a window initialization (Win.ini), or a system initialization (System.ini). The window means an area set by a lower right end from an upper left end where a mouse is located. For example, the S / W 13 obtains a window handle of the currently playing video game and obtains a window size corresponding to the window handle.

The S / W 13 hooks predetermined messages (eg, activation, movement, etc.) about the window handle and the window size. After the desired area is set, the S / W 13 sends the location information and the area information representing the upper left and lower right coordinates of the partial area to the USBs 15 and 21. Through the IVP (27).

Then, the predetermined contrast and sharpness information are automatically set for the area where the moving picture is displayed. The IVP 27 highlights a partial region on the monitor screen.

The user can manually select the partial region using the mouse 11 of FIG. The partial region is not highlighted until the program for the window including the partial region is activated.

That is, the selected partial region is highlighted only when the program for the window is activated. For example, the highlighted subregion can be minimized in the window. When the other program is activated in another window that does not include the highlighted subregion, the subregion is not highlighted. Only when the window or program including the partial region is activated, the partial region is highlighted.

The S / W 13 obtains a window handle to the pointer of the current mouse and hooks a message about activation or deactivation of a predetermined program generated by the O / S 17.

The user may set a second partial region for highlighting in the selected first partial region. Even when the second partial region is highlighted with the largest size, the size of the second partial region is adjusted to be larger than the size of the first partial region.

When the level of the video signals, for example, the R / G / B signal is 0 volts (V), the partial region cannot be set on the monitor 20. This problem can be solved by obtaining the starting position of the activation video signals generated from the G / C 19, setting the partial region and highlighting the partial region.

6B details exceptional processing. (1) denotes a horizontal synchronization signal (Hsync), (2) denotes an active video signal, and (3) denotes an active video signal detected from an R / G / B logical sum operation. (A) and (B) show active video signal sections not detected by the G / C 19 of FIG.

Since the R / G / B video signal level is 0 or very low in the A and B sections, no active video signal is detected in the A and B sections. In this case, the proper Hres shown in FIG. 9 is not guaranteed. This is called an exception situation.

 In the exception process, Hstart is calculated without using the active video signal detected from the IVP. Conversely, video timing information from the G / C 19 is used and the area selected by the user is searched using the proportions described in FIG.

If the frequency or horizontal resolution of the G / C 19 is changed by the user's selection or software, the size of the highlighted subregion is automatically changed in response to the varying frequency or horizontal resolution of the G / C 19. .

For example, in the horizontal resolution 1280, the upper left coordinates (sx, sy) and the lower right coordinates (ex, ey) are set to (100, 100) and (200, 200), respectively, and then the horizontal resolution is changed to 800. The changed upper left coordinates (sx ', sy') and the lower right coordinates (ex ', ey') can be obtained by Equation 1.

If we find sx ', sx' is 62.5. Sx 'obtained by Equation 1 always has an error of less than one pixel when taking an integer as information. Each of the upper left coordinates sx 'and sy' and the lower right coordinates ex 'and ey' are calculated according to Equation 1.

When the frequency or resolution changes, the S / W 13 receives a horizontal resolution change message for varying the size of the partial region from the Windows system.

The S / W 13 calculates a distance from a predetermined starting point at which the video signals are activated and enabled according to the video signals output from the G / C 19. The S / W 13 determines the distance and the enable interval irrespective of the width of the horizontal synchronization signal, the back porch and the left border.

6c to 6g show generation and processing of partial region information. 6C shows a display screen 600 that includes windows 601, 602. Objects 604 are in windows.

6D illustrates that hooking program 608 hooks messages and handles sent between computer O / S 606 and programs 612. When the user selects a predetermined area for highlighting, the O / S 606 generates a window handle and a message 610 containing the current coordinates for the selected area.

If the window handle and the message 610 change (ie, the highlighted area changes), the hooking program 608 extracts information about the window size and the travel distance from the O / S 606. The coordinates of the highlighted area are calculated appropriately for the moved window or the window with the changed size. The selected area is equal to the relative distance based on the upper left coordinate of the suitable window.

When a window is activated by the hooking program 608, a handle suitable for the window is calculated and stored. The highlighted area is reset according to the vertical and horizontal directions of the newly calculated upper left coordinates.

FIG. 6E is a flowchart illustrating the operation of the hooking program of FIG. 6D in detail. The hooking program 608 stores the handle and the area for the selected window (622). Step 624 determines whether the hooking handle is the same as the stored handle.

If the hooking handle and the stored handle do not match, the hooking program ends (630). If the hooking handle and the stored handle match, the hooking program determines whether the hooking message indicates window activation (626). If the hooking message indicates deactivation of the window, the highlighted area is deactivated (off) (628).

If the hooking message indicates activation of the window, the hooking program performs step 630. In operation 630, the selected area is determined from the stored handle and area data, and then the highlighted area is activated.

6F illustrates a method of selecting and moving partial regions. The window 640A before the movement has a rectangular window 644A, and the window 640B after the movement has a rectangular window 644B. The full screen 642 consists of 800 x 600 pixels.

If the upper left coordinate of the window 640A before the movement is (60, 50) and the lower right coordinate is (360, 300), the size of the window 640A is 300x200 pixels. The upper left coordinate of the highlighted area 644A is (100, 100) and the lower right coordinate is (300, 250). The size of the highlighted area 644A is 200 x 150 pixels.

The upper left coordinate of the moved window 640B is (420, 320) and the lower right coordinate is (720, 570), and the size of the moved window does not change. However, the new coordinates of the highlighted area 644B can be obtained as follows.

Before the movement, the horizontal distance from the upper left coordinate of the window 640A to the upper left coordinate of the window 644A, which is highlighted, is (100-60 = 40) and the vertical distance is (100-50 = 50). The horizontal distance from the upper left coordinate of the window 640A to the lower right coordinate of the highlighted area 644A is (300-100 = 200) and the vertical distance is (250-100 = 150). The size of the highlighted area 644a is 200 x 150 pixels.

The size of the moved window 640B is the same as the size of the window 640A before moving. However, the upper left coordinate of the moved window 640B is (420, 320). The coordinates of the highlighted area 644B in the moved window 640B are calculated as follows.

Using the calculated horizontal distance and vertical distance, the upper left upper coordinate of the highlighted area 644B is (420 + 40 = 460, 320 + 50 = 370). The upper right end coordinate of the highlighted area 644B is (460 + 200 = 660, 370 + 150 = 520). That is, the size of the highlighted area 644B is 200x150 pixels.

6G illustrates a method of calculating the area to be highlighted when the size of the window 650 changes. 650A represents the size of the original selected window and 650B represents the window of varying size.

If any area in window 650A is highlighted, the area highlighted in window 650B must be recalculated. The window handle and area for the selected window 650A is stored by the hooking program. If the window message indicates a change in window size, the changed window area is recalculated to determine the size of the highlighted area.

These features are described using the C ++ programming language:

GetCursorPos (&MousePoint);

hWnd = :: WindowFromPoint (Mousepoint);

:: GetWindowRect (hWnd, m_rectSelect);

The first line identifies the current mouse pointer position. The second line generates a window handle for the mouse pointer. The third line uses the window handle to calculate the appropriate window area. The third line represents the top left and bottom right coordinates.

FIG. 7 is a block diagram illustrating a method of selecting an area having a non-square shape by using an external enable signal. Typically the area selected by S / W 13 is square.

Area information and adjustment information included in the register 42 of the IVP 27 shown in FIG. 4 highlight the rectangle. If the area set by the S / W 13 is not rectangular, the area information for the area having various shapes is transmitted to the IVP 27 using the external enable signal EXEN.

Referring to Fig. 7, a circular partial area A is selected for highlighting. The external enable signal EXEN_1 is activated at the start point SA of the circle A for highlighting and deactivated at the end point EA. The external enable signal EXEN_N is activated at the start point SB of the circle A and deactivated at the end point EB. The external enable signal EXEN_2N is activated at the start point SC of the circle A and deactivated at the end point EC.

6 and 7, the external enable signals EXEN_1 to EXEN_2N are generated for pixels in the horizontal direction of the partial region A region for highlighting and are scanned on the monitor, and the partial region A region is Displayed on the monitor and highlighted by the IVP 27.

The external enable signals EXEN_1 to EXEN_2N are synchronized with the horizontal synchronization signal Hsync. The full screen is generated in the monitor 20 during the period during which the horizontal sync signal Hsync is activated. The MCU 25 detects the horizontal synchronization signal Hsync and converts the horizontal synchronization signal Hsync to the time domain. The MCU 25 sets the distance from the horizontal sync signal Hsync to the start point of the enabled section. The MCU 25 activates the external enable signals EXEN_1 to EXEN_2N from each start point to each end point.

For the enable interval to the vertical axis, the line distance is set from the vertical sync signal. In this case, the S / W 13 transmits area information about each line to the MCU 25 within the period of the horizontal synchronization signal Hsync. The MCU 25 processes the information transmitted from the S / W 13 for each period of each horizontal synchronous signal Hsync.

The S / W 13 generates area information of the partial region in the horizontal resolution of the active video signal and the horizontal resolution of the active video signal among the current setting information output from the G / C 19. That is, area information is generated based on the section in which the video signal is activated.

Errors can occur due to differences in the coordinate system between the computer 10 and the monitor 20. The IVP 27 may generate a partial region based on the horizontal synchronization signal Hsync. Some errors may be caused by the difference between the area information generated by the S / W 13 and the area information used in the IVP 27. The error causes a difference between the basis of the coordinates and the horizontal resolution.

Due to the wide variety of video resolutions generated by the computer, the phase locked loop (PLL) of the IVP 27 is difficult to make symmetric. Therefore, the PLL of the IVP 27 is designed to set various modes.

For example, the mode selection horizontal resolution of the IVP 27 may be selected from 640, 800, 1024, and 1280 pixels. However, the horizontal resolutions of the active video signals may be 720, 832, 1152, and 1600. The IVP 27 generates errors for non-selectable horizontal resolutions, such as 720, 832, 1152, and 1600. That is, when the horizontal resolution of the computer 10 and the horizontal resolution of the monitor 20 are different, the coordinates of the mouse (ie, the mouse pointer) of the computer 10 are different from the coordinates displayed on the monitor 20.

8 is a timing diagram illustrating a method of compensating for an error using a two-stage PLL. IVP 27 ORs the R / G / B active video signals and generates a video enable signal at the determined threshold voltage level. The system clock signal is generated using a PLL (not shown) in the IVP 27.

The PLL divides the interval between the first rising edge and the second rising edge of the horizontal synchronization signal Hsync by the mode selection horizontal resolution. The two-stage PLL (not shown) according to the present invention divides the section from the rising edge of the active video signal to the falling edge with the mode selection horizontal resolution.

Since the two-stage PLL uses the same reference signals, that is, active video and area information transmitted from the S / W 13, the error is eliminated.

S / W 13 uses Equation 2 to compensate for errors. Referring to FIG. 8, HRes represents the horizontal resolution of the active video signal output from the G / C 19 of FIG. 3 and MousePos represents the coordinates of an actual mouse (mouse pointer) 11 of the computer.

Mode represents the horizontal resolution of the two-stage PLL of the IVP 27 and x represents the coordinates displayed in the CDT obtained with the actual mouse pointer (MousePos). x is calculated through equation (2).

9 is a timing diagram illustrating a method of compensating for an error using a horizontal synchronization signal and an active video signal. Referring to FIG. 9, PLL (Hsync) represents a horizontal synchronization signal used in the IVP 27. HTotal represents the number of pixels output by the G / C 19 in the horizontal direction, and MousePos represents the actual position of the mouse of the computer 10.

Mode represents the resolution determined by the PLL of the IVP 27 and x represents the position where the mouse pointer is displayed in the CDT corresponding to the actual mouse position. X represents the position which IVP 27 processed.

 Δdot_l represents the time (delay) until the PLL (Hsync) is activated and the Active Video signal is activated, and Δdot_r represents the time until the Active Video signal is inactive and the PLL (Hsync) is activated again. Represents time.

x can be obtained through equation (3). Where x 'is the median coefficient to find x.

IVP 27 cannot perform any arithmetic operations. For example, you cannot multiply and divide a number other than two. These operations are performed by the S / W 13. Information on Δdot_l and Δdot_r may be obtained from an external source through a read operation. The obtained information is compensated for error through the equation (3).

First, the S / W 13 of FIG. 3 selects Mode information for the IVP 27 and transmits the Mode information to the MCU 25. The MCU 25 sets a mode in the IVP 27, reads information on Δdot_l and Δdot_r, and transfers the read information to the S / W 13 through the USBs 21 and 15. The S / W 13 determines the position of x using Equation 3 and transfers the x value to the IVP 27 via the USBs 15 and 21 and the MCU 25.

Second, the MCU 25 reads Δdot_l and Δdot_r from the IVP 27 in response to the horizontal resolution HRes and the mouse position (MousePos). 27).

FIG. 10 is a timing diagram illustrating a method of compensating for an error using an active video signal output from the G / C 19. Referring to FIG. 10, HTotal represents the total number of pixels output from the G / C 19 in the horizontal direction. HStart indicates a start position at which the G / C 19 outputs a video signal. HRes represents the horizontal resolution of the active video signal and MousePos represents the actual position of the mouse 11.

Mode represents the resolution of the monitor or screen determined by the IVP 27 and x represents the position corresponding to the actual MouseTM position (MousePos) and processed inside the IVP 27.

The S / W 13 obtains the current setting information for the display device output from the G / C 19 and generates a value proportional to the total number of fixes HTotal. For example, it is assumed that the number of pixels (HTotal), the start position (HStart), the horizontal resolution (HRes), and the actual mouse position (MousePos) are 900, 110, 720, and 100, respectively. When the mode spoken by the horizontal synchronization signal PLL (Hsync) is 800, x corresponding to the actual mouse position MousePos can be obtained by Equation 4.

After obtaining the position x according to Equation 4, the S / W 13 transmits the position x to the IVP 25 through the USBs 15 and 21 and the MCU 25. In this case, the start position Hstart is changed by the width of the horizontal synchronization signal generated by the polarity difference.

The start position Hstart is transferred from the S / W 13 to the IVP 25 from which the polarity setting is obtained from the G / C 19. Optionally, IVP 25 detects polarity.

Similar to the method of setting the area using the OSD 23, the error compensation method does not need to generate the active video signal using the IVP 27. This allows the active video signals to perform normal operation regardless of the brightness of the background.

FIG. 11 is a timing diagram illustrating a concept of highlighting a partial region when the entire screen of the CDT is displayed in blue. Referring to FIG. 11, it is assumed that a user sets an area 115 having a predetermined size to be highlighted in the display portion 113.

The display portion 113 is displayed in blue on the CDT display screen 111. The portion 115 to be highlighted may be set by the user to a rectangle, a closed curve, a polygon, or any irregular shape.

The process by which the IVP 17 highlights the area 115 will now be described with reference to FIGS. 3 and 11. The user highlights by dragging the mouse 11 from the point A (H-Start, V-Start) to the point B (H-End, V-End) in the display area 113 of the CDT display screen 111. The area 35 to be set is set. In this case, the region 115 to be highlighted represents the region converted by the IVP 27.

The S / W 13 generates position information representing the upper left upper coordinate corresponding to the point A (H-start, V-start) and the lower right lower coordinate corresponding to the point B (H-end, V-end). The S / W 13 also generates area information indicating the size of the area set by the positional information.

The location information and the area information are transmitted to the IVP 27 via an interface such as, for example, USB interfaces 15 and 21. The IVP 27 receives the location information and the area information and receives the point A (H-Start, V-Start) from the first edge of the horizontal synchronization signal (H-Sync) or the vertical synchronization signal (V-Sync). ) And point B (H-end, V-end).

The IVP 27 generates a highlighting enable signal IBLK. The highlighting enable signal IBLK is activated at point A (H-start, V-start) corresponding to the upper left coordinate displayed on the CDT display screen 111 and corresponds to the lower right coordinate displayed on the CDT display screen 111. Is disabled at point B (H-end, V-end). The IVP 27 deactivates the highlighting enable signal IBLK at points B (H-end and V-end).

Therefore, the highlight enable signal IBLK is activated only in the region 115 to be highlighted. The IVP 27 increases or decreases the gain of the blue video signal Vinv input during the period during which the highlight enable signal IBLK is activated by VB1 or by VB2. Thus, region 115 is highlighted.

The IVP 27 may receive an input blue video signal having a peak-peak voltage level VA and increase the gain of the blue video signal for the region 115 by VB1. In addition, the IVP 27 may reduce the gain of the blue video signal by VB2. Thus IVP 27 highlights region 115.

The peak-peak voltage level VA of the video signal for an area other than the area 15 is equal to the peak-peak voltage level VA of the video signal for the area 15. If the peak-peak voltage level VA is 0.714 volts V, it is preferable to increase or decrease VB1 and VB2 by 5 dB from the peak-peak voltage level VA, respectively.

The horizontal synchronization signal H-sync is 20KHz to 120KHz, and the vertical synchronization signal V-sync is preferably 50Hz to 80Hz. And when the horizontal resolution is 1024, the system clock (Sys-CLK) is preferably 20MHz to 125MHz. A counter (not shown) for counting points A (H-Start, V-Start) and points B (H-End, V-End) is a horizontal sync signal (H-sync) or a vertical sync signal (V-sync). Reset at the rising edge of.

  FIG. 12 is a timing diagram illustrating a concept of highlighting a partial region when the entire screen of the CDT is displayed in white. The method of highlighting the partial region shown in FIG. 12 is similar to the method of highlighting the partial region shown in FIG.

When the CDT display screen 111 is displayed in white, the user wants to highlight by dragging the mouse 11 from the point C (H-STart, V-Start) to the point D (H-End, V-End). Area 126 is set.

The IVP 27 receives location information and location information for the area 126 and generates a highlighting enable signal IBLK for the area 126. The highlight enable signal IBLK is activated at points C (H-Start and V-Start) and deactivated at points D (H-End and V-End).

The IVP 27 highlights the region 126 by increasing (VB1) or decreasing (VB2) the voltage level (or gain) of the input white video signal Vinv only in the period where the highlight enable signal IBLK is activated.

13 is a block diagram of an IVP 27 in accordance with an embodiment of the present invention. The IVP 27 includes a highlighting enable signal IBLK generation circuit 41 and an amplifying circuit 135.

The IBLK generation circuit 131 receives positional information and area information input serially through an I2C serial data line (SDA). The IBLK and I2C data I2C_Data are output to the amplifying circuit 135 in response to the horizontal synchronization signal Hsync and the vertical synchronization signal Vsync.

The amplifier circuit 135 receives the highlighting enable signal IBLK and position information and region information converted by the I2C. The amplifying circuit 135 controls the gain and (peak) width of the input R / G / B video signals RIN, GIN, and BIN according to the highlighting enable signal IBLK, and controls the R / G with controlled contrast and sharpness. Outputs G / B video signals ROUT, GOUT, and BOUT.

FIG. 14 is a detailed block diagram of the highlighting enable signal IBLK generation circuit 131 shown in FIG. 13. The highlighting enable signal IBLK generation circuit 131 includes a data receiver 141, a PLL system clock generation circuit 143, a control register 145, an IBLK controller 147, and an output circuit 149.

The data receiver 141 receives positional information and area information serially input through the I2C data line SDA in response to a clock signal input through the I2C clock line SCL. The data receiver 141 receives location information and area information serially input to a decoder (not shown). The data receiver 141 decodes the position information and the area information into the parallel data I2C_Data and outputs the parallel data I2C_Data to the control register 145 and the amplifying circuit 135.

The PLL system clock generation circuit 63 receives the horizontal synchronous signal (H-sync) and the vertical synchronous signal (V-sync), and the system clock signal (Sys-CLK), the vertical pulse (V-pulse) and the horizontal pulse (H). -pulse). The vertical pulse V-pulse is a signal that is substantially the same as the vertical synchronization signal V-sync as a buffering signal by the PLL system clock generation circuit 63. The horizontal pulse H-pulse is a signal that is substantially the same as the horizontal synchronous signal H-sync as a buffering signal by the PLL system clock generation circuit 63.

The system clock signal Sys-CLK is used as a signal for latching position information and area information input through the I2C data line SDA and determines the resolution of the highlighting enable signal IBLK during one horizontal period (1Thor). do. For example, the system clock signal Sys-CLK may be obtained by multiplying the frequency of the horizontal synchronization signal Hsync by the horizontal resolution.

The control register 145 latches parallel data I2C_Data output from the data receiver 141 in response to the system clock signal Sys-CLK and latches parallel data I2C_Data while the vertical pulse V-pulse is activated. ) Is output to the IBLK controller 147.

IBLK controller 147 has four 11-bit counters (not shown) and two 9-bit counters (not shown). The IBLK controller 147 corresponds to the output signal FCNTL of the control register 145 received in response to the system clock Sys-CLK, the horizontal pulse H-pulse and the vertical pulse V-pulse. A highlighting enable signal IBLK is generated which is activated at (H-Start, V-Start) and point B (H-End, V-End).

Four 11-bit counters include horizontal start point (H-Start, V-Start), horizontal end point (H-End, V-Start), vertical start point (H-Start, V-End), and vertical end point (H-End, V). Count each End). Four 11-bit counters receive the positional information and the area information set in the computer 10, convert the positional information and the area information into the area to be highlighted, and display the area in the CDT 7.

Referring to Fig. 11, when the position 115 of the area to be highlighted is moved, two 9-bit counters are points A (H-Start and V-Start) and point B (H-End and V-) before the movement. The distance traveled in the horizontal direction and the distance traveled in the vertical direction between the End) and the following points A (H-Start, V-Start) and points B (H-End, V-End) are counted, respectively.

Counters counting the horizontal start point H-Start and the horizontal end point H-End are reset at the rising edge of the horizontal synchronization signal Hsync. The counters divide one period 1 Thor of the horizontal synchronization signal Hsync by a predetermined frequency and display coordinates corresponding to the positional information and area information on the CDT 7.

The counter counting the vertical start point V-Start and the vertical end point V-End is reset at the rising edge of the vertical synchronization signal Vsync. The counters count the horizontal synchronization signal Hsync and display coordinates corresponding to the positional information and area information on the CDT 7.

The output circuit 149 receives the output signal of the IBLK controller 147 or the external enable signal EXEN input from the outside of the IVP 27 and outputs the highlighting enable signal IBLK.

The external enable signal EXEN is a signal generated by the MCU 25 in response to a signal output from the S / W 13 or the OSD 23. The external enable signal EXEN is used when the partial area selected by the user is not rectangular. The external enable signal EXEN is activated only in the region for highlighting.

FIG. 15 is a detailed block diagram of the amplifier circuit 135 shown in FIG. The amplifying circuit 135 includes a control signal generating circuit 160 and a gain adjusting circuit 150. The gain adjusting circuit 150 is provided for each R / G / B channel to adjust the gain of the video signals of the R / G / B.

The control signal generation circuit 160 includes an IBLK interface 161, an I2C bus interface 163, a conversion circuit 165, and a contrast / sharpness control signal generation circuit 167. The IBLK interface 160 receives the highlighting enable signal IBLK inputted at the TTL level and outputs a switching control signal IBLK_SW having a predetermined amplitude to switch SW1.

FIG. 16 is a detailed circuit diagram of the circuit 61 of the IBLK interface shown in FIG. The IBLK interface 71 has a comparison circuit 1601 having a range of 0.5V. The comparison circuit 1601 receives the highlighting enable signal IBLK and the reference voltage REF and outputs a tm switching control signal IBLK_SW. It is preferable that the reference voltage REF is DC 2.5V.

The comparison circuit 1601 outputs an in-switching control signal IBLK_SW having a peak-peak voltage of 0.5V to remove digital noise generated by the power supply voltage included in the highlighting enable signal IBLK.

The I2C bus interface 163 receives parallel data I2C_Data output from the data receiver 141 of FIG. 14 in response to the system clock Sys-CLK. The I2C bus interface 163 latches the parallel data I2C_Data and outputs the latched signal LData. The conversion circuit 165 receives the output signal LData of the I2C bus interface 163 and converts it into an analog current.

17 shows the conversion circuit 165 shown in FIG. The conversion circuit 165 includes a digital-to-analog converter 1651 and a (tanh- ¹ ) processor 1653. (tanh ^-1), the processor (1653) outputs an output signal proportional to (tanh ^-1) the input signal.

The digital-to-analog converter 1651 receives the output signal Ldata of the I2C bus interface 73 and generates currents I_SUB and I_CONT proportional to the increase in the received signal LData. The amplifying circuit 135 has a digital-to-analog converter for controlling the gain of the video signal of the R / G / B channel and the digital-to-analog converter for simultaneously controlling the gain of the video signal of the R / G / B channel. N is a natural number.

(tanh ^-1), the processor (1653) is the current channel in response to (I_SUB) contrast control signal (I2C_SUB) the channel contrast control circuit (155) contrast control signal (I2C_CONT) to the output and responds to a current (I_CONT) in contrast Output to the control circuit 157.

The contrast / sharpness control signal generation circuit 167 of FIG. 15 receives the output signal LData of the I2C bus interface 163 and switches the switching signal Sh_SW, the sharpness gain control signal Sharp_G, and the sharpness peak width control signal Sharp_W. ) Is output to the sharpness control circuit 153. The sharpness gain control signal Sharp_G and the sharpness peak width control signal Sharp_W may be controlled by N bits (N is a natural number), respectively, but it is preferable to have 3 bits in the embodiment of the present invention.

The gain adjustment circuit 150 of FIG. 15 includes a clamp circuit 151, a sharpness control circuit 153, a switching circuit SW1, a channel contrast control circuit 155, a contrast control circuit 157, a video amplifier 159, An input buffer 152, a mixer 156 and an output buffer 154 are provided.

The clamp circuit 151 compares the R video signal RIN input to the R channel with a predetermined reference voltage CVREF and outputs the video signal clamped in a predetermined range to the switching circuit SW1 according to the result of the intersection. .

The clamp circuit 151 uses negative feedback to sample until the low level of the input video signal RIN coincides with the reference voltage CVREF in the active section of the horizontal enable signal H-pulse. do. The clamp circuit 151 outputs the clamped video signal when the low level of the input video signal RIN is equal to the reference voltage CVREF.

For example, when the reference voltage CVREF is 2V DC and the voltage level of the input video signal RIN is peak-peak 0.714Vp-p, the input video signal RIN in the period where the horizontal enable signal H-pulse is activated. When the sampling is performed until the low level of the signal becomes 2V, the voltage level of the output signal of the clamp circuit 151 becomes peak-peak 2.714Vp-p.

The switching circuit SW1 transfers the output signal of the clamp circuit 151 to the sharpness control circuit 153 or to the input buffer 91 in response to the switching control signal IBLK_SW. That is, when the highlight enable signal IBLK is activated, the output signal Rva of the clamp circuit 151 is transmitted to the sharpness control circuit 153. However, when the highlight enable signal IBLK is deactivated, the output signal Rvb of the clamp circuit 151 is transmitted to the input buffer 152.

The input buffer 152 receives the output signal Rvb of the clamp circuit 81, buffers the output signal Rvb, and outputs the output signal to the mixer 156. At this time, the gain of the input buffer 152 is preferably set to 0 dB.

The sharpness control circuit 153 adjusts the width and the gain of the peak of the video signal Rva in response to the control signals Sharp_G, Sharp_W, Sh_SW. FIG. 18 shows the sharpness control circuit shown in FIG. 15 in detail. ΔSharp_B represents the ratio of VA and B, as shown in FIG. 18, and ΔSharp_C represents the ratio of VA and C.

The control signal Sharp_G controls the peak B or C with respect to the video signal Rva. The control signal Sharp_W controls the width ΔW of the peak with respect to the video signal Rva. The switching signal Sh_SW controls the switching circuit SW2 that controls the on / off state of the sharpness control circuit 153.

The sharpness control circuit 153 adjusts the gain of the video signal within the range of 0 to 50% based on the video signal having the peak-peak voltage VA in response to the 3-bit sharpness gain control signal Sharp_G. .

In addition, the sharpness control circuit 153 adjusts the peak width ΔW of the peak B or C. The peak width ΔW of the peak B or C has a variable range of 50ns to 300ns in response to the 3-bit sharpness pulse width control signal Sharp_W. ΔSharp represents the ratio of change of peak B or C to peak-peak voltage VA.

The channel contrast control circuit 155 adjusts the gain of the output signal Vsharp of the sharpness control circuit 153 in response to the channel contrast control signal I2C_SUB. The channel contrast control circuit 155 adjusts the gain of the video signal of only the R channel. The variable range of the video signal that is varied by the channel contrast control circuit 155 is preferably 0 to 1.5 dB.

The channel contrast control circuit 155 is present for each R / G / B channel and controls only the gain of the R / G / B channel.

The contrast control circuit 157 controls the gain of the output signal of the received channel contrast control circuit 155 in response to the contrast control signal I2C_CONT. The contrast control circuit 157 simultaneously controls the gain of the video signal of the R / G / B channel in response to the contrast control signal I2C_CONT. The variable range of gain by the contrast control circuit 157 is preferably 0 to 3.5 dB.

The video amplifier 159 amplifies the gain of the video signal for a region for receiving and highlighting the output signal of the contrast control circuit 157 up to 5 dB. The output signal c of the video amplifier 159 preferably has a range of 0 to 1.2Vp-p.

FIG. 19 is a timing diagram illustrating output waveforms of respective circuits in a section in which the highlight enable signal IBLK is activated. 15 and 19, when the highlighting enable signal IBLK is activated, the switching control signal IBLK_SW is also activated. Therefore, the video signal Vinv having the peak-peak 0.714V voltage level VA is input to the sharpness control circuit 153 through the contact a of the switching circuit SW1.

The sharpness control circuit 83 varies the peak width and the gain of the video signal Rva to generate the output signal Vsharp in response to the control signals Sharp_G, Sharp_W, Sh_SW. 18 and 19, ΔSharp_B and ΔSharp_C represent gain adjustment ratios for the video signal Vinv.

The output signal C output from the video amplifier 159 includes a gain [Delta] GAIN used to control the video signal in the region to be highlighted.

The mixer 93 outputs the signal e generated by combining the output signal d of the input buffer 63 and the output signal c of the video amplifier 89 to the output buffer 95. The maximum gain of the mixer 93 is 0 dB and the width of the glitch noise generated when the signals d and c are summed is preferably set to 1 pixel or less.

The output buffer 154 receives the output signal e of the mixer 156 and outputs a video signal ROUT in which contrast and sharpness are adjusted.

20 is a timing diagram showing output waveforms of the amplifier circuit. A case in which the R video signal is highlighted in the highlighting region will be described in detail with reference to FIGS. 15 and 20. The case where the G video signal and the B video signal are highlighted in the highlighting area is the same as when the R video signal is highlighted.

When the highlighting enable signal IBLK is deactivated, that is, the video signal Vinv for the R channel in the normal video period is transmitted through the clamp circuit 151, the switching circuit SW1, and the input buffer 152. It is output to the mixer 156.

However, when the highlighting enable signal IBLK is activated, the R-channel video signal Vinv having the peak-peak 0.714Vp-p level is controlled by the sharpness control circuit 153 through the clamp circuit 151 and the switching circuit SW1. Is entered.

The sharpness control circuit 83 obtains the gain of the peak ΔSharp_B or ΔSharp_C and the width of the peak ΔW for the video signal Rva having a peak-peak 0.714 Vp-p level in response to the control signals Sharp_G and Sharp_W. To control. The channel contrast control circuit 155 receives the output signal of the sharpness control circuit 153 and amplifies the video signal for the area to be highlighted.

The contrast control circuit 87 and the video amplifier 89 amplify the video signal for the region to be highlighted and output the amplified video signal c to the mixer 156. The video signal for the region to be highlighted has a peak-peak 1.2Vp-p level.

The mixer 156 combines the normal video signal and the highlighted video signal and outputs the result to the output buffer 154. In the highlighting video, the output signal Voutv of the output buffer 154 is as high as the gain ΔGain and peak gain ratio ΔSharp_B above the normal VA signal level VA. Therefore, the user can highlight the highlighting area so that the user can watch the video with clear and bright image quality.

21 is a photograph showing the highlighted partial region. The picture of FIG. 21 displays a picture taken with a digital camera on a CDT. The user can highlight only a desired portion of the picture displayed in the CDT.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, a semiconductor device, a system, a method of controlling contrast and / or sharpness of a partial region, an image processor capable of controlling contrast and / or sharpness of a region, a video processing system, and a display apparatus according to the present invention are provided by a user. By adjusting the contrast and sharpness of the desired partial region, there is an effect of providing various contents optimally.

Claims (91)

In a system for displaying an image, An area selector for setting a predetermined area in the displayed image; And And a parameter control circuit for selecting image adjustment parameters for adjusting a method and a location for highlighting the predetermined area in the displayed image, And the parameter control circuit highlights the predetermined area by increasing or decreasing contrast or sharpness for the predetermined area in response to the image adjustment parameters. The system of claim 1, wherein the area selector and the parameter control circuit are located in a display device. The system of claim 1, wherein the area selector and the parameter control circuit are located in a computer. The system of claim 2, wherein the display device is a color display tube, a thin film transistor liquid crystal crystal device (TFT-LCD) or a plasma display panel. The system of claim 1, wherein the area selector is a pointing device or a hot-key. The system of claim 1, wherein the area selector selects areas that are rectangular and not rectangular. 2. The system of claim 1, wherein said parameter control circuit generates image adjustment parameters for increasing or decreasing the gain of video signals for said selected area. The system of claim 1, wherein the parameter control circuit generates image adjustment parameters for increasing or decreasing the sharpness level for the selected area. 2. The system of claim 1, wherein said parameter control circuit generates image adjustment parameters for controlling the sharpness function for said selected area. The system of claim 1, wherein the system comprises an interface for transferring the image adjustment parameters between a computer and a display device independently of the video signals for the image. 12. The system of claim 10, wherein the image adjustment parameters are transmitted from the computer to the display device via a universal serial bus. In the system for controlling the highlighting of the image, A computer for generating video signals, identifying a selected area of the video signals, and identifying image adjustment parameters for identifying and adjusting the selected area of the video signals; And An interface for transmitting selected image adjustment parameters separately from the video signals, Highlighting of the image is performed by increasing or decreasing contrast or sharpness for the selected area in response to the image adjustment parameters. 13. The system of claim 12, wherein the interface has a first port for transmitting the image adjustment parameters and a second port for transmitting the video signals. 15. The system of claim 13, wherein the first port is a universal serial bus port, a serial port, a plug-and-play port, a parallel port, or an optical fiber port and the second port is a graphics card port. 13. The system of claim 12, wherein the image adjustment parameters and the video signals are transmitted through the same port. 13. The system of claim 12, wherein the computer compensates for the image adjustment parameters generated due to a difference in the coordinate system of the computer and a display device for displaying the video signals. 13. The system of claim 12, wherein the image adjustment parameters adjust contrast and sharpness of the selected area. 13. The system of claim 12, wherein the computer automatically deactivates highlighting of the selected area when the window comprising the selected area is deactivated. 13. The system of claim 12, wherein the computer automatically varies the size and location of the selected area according to the size and location of a window comprising the selected area. In a highlighting control method of a predetermined area within a window, Highlighting the selected area within the window; And moving the highlighting of the selected area together with the movement of the window. 21. The method of claim 20, wherein the control method highlights the selected area when the window is activated and disables highlighting of the selected area when the window is deactivated. The method of claim 20, wherein the control method Deactivating highlighting of the selected area when the window is minimized or another window is activated; And Automatically highlighting another selected area within said other window when said other window is activated. 21. The method of claim 20, wherein the control method automatically varies the size and position of the selected area according to the size and position of the window. The method of claim 20, wherein the control method Selecting a non-rectangular area within the window for highlighting; Generating signals indicative of the non-square area; And And using the signals for highlighting the non-rectangular region within a display device. 21. The method of claim 20, wherein said control method comprises the step of selecting said area using a user adjustment device (OSD). The method of claim 20, wherein the control method Storing the handle and the area; Hooking a message; When the message is activated, generating the selected region from stored handles and regions; And Turning off highlighting when the message is deactivated. 21. The method of claim 20, wherein the control method adjusts a position of the selected area according to a difference between a resolution of a computer and a resolution of a display device. The method of claim 20, wherein the control method transmits information for identifying the selected area to a display device through an interface different from an interface for transmitting the video signals to the display device. . The method of claim 20, wherein the control method, Automatically displaying a predetermined window on the display device; When the predetermined window is selected, using the predetermined window as the selected area; Automatically adjusting the size or position of the predetermined window when the predetermined window is not selected; And And when the adjusted predetermined window is selected, using the adjusted predetermined window as the selected area. 30. The method of claim 29, wherein the control method comprises automatically displaying the predetermined window in an area in which moving images are displayed. The method of claim 20, wherein the control method, Detecting a change in frequency or horizontal resolution using the output video signals; And And automatically changing the size or position of the selected area in accordance with the detected change with respect to frequency or horizontal resolution. In a method for highlighting a predetermined area on a screen, Confirming location information of a predetermined area in an image selected for highlighting; Identifying resolution characteristics for video signals including the image in a coordinate system of a PC; Identifying resolution characteristics of a display device displaying the video signals within a coordinate system of the display device; And And adjusting the position information of the selected region according to a difference between resolution characteristics of the video signals and resolution characteristics of the display apparatus. The method of claim 32, wherein the area information is HRes: MousePos = Mode: adjusted by x, Where HRes represents the horizontal resolution of the video signals, MousePos represents the coordinates of the mouse pointer, Mode represents the horizontal resolution generated from the video signal using a circuit generating a clock, and x represents the displayed on the display device. A method for highlighting a predetermined area characterized by indicating position information. The method of claim 32, wherein the area information is

Adjusted by Here, Mode represents the resolution of the horizontal synchronization signal determined by the PLL, x represents the selected position displayed on the display device corresponding to the mouse position MousePos, and Δdot_1 is until the video signals are activated after the horizontal synchronization signal is activated. Δdot_r represents a time from when the video signal is inactivated until the horizontal synchronization signal is inactivated, and HRes represents a horizontal resolution of the video signals. The method of claim 32, wherein the area information is Htotal: (Hstart + MousePos) = Mode: adjusted by x, Htotal represents the total number of pixels output in the horizontal direction, Hstart represents the starting position of the video signals with respect to the start of the horizontal synchronization signal, MousePos represents the actual position of the mouse, Mode represents the measured horizontal resolution, x represents a position corresponding to the actual position of the mouse used to highlight the selected region. 33. The method of claim 32 wherein the highlighting method is Measuring a resolution of the video signals; Determining the location information for the selected area in the computer using the measured resolution; And And transmitting the area information to the display device to highlight the selected area. 33. The method of claim 32 wherein the highlighting method is Measuring a resolution of a horizontal synchronization signal or the video signals; Checking the horizontal resolution measured with respect to the video signals; Checking the position of the mouse; And Identifying the location of the selected area in accordance with the measured resolution, the HRes, and the MousePos. In the image processor, An input terminal for receiving video signals; An input terminal for receiving region information for highlighting a predetermined region in the video signals; And A control circuit for changing the video signals according to the area information; The control circuit, A highlighting signal generation circuit for generating highlighting signals related to the area information; And an amplifier circuit for varying a gain of the video signals according to the highlighting signals. The image processor of claim 38, wherein the control circuit is located in a display device. delete 39. The circuit of claim 38, wherein the highlighting signal generating circuit A data receiver for converting serial position information and area information into parallel data; A system clock generation circuit for receiving a horizontal synchronization signal and a vertical synchronization signal and outputting a system clock signal, a vertical pulse signal, and a horizontal pulse signal; A control register for latching the parallel data output from the data receiver according to the system clock; And And a highlight area control circuit for converting the parallel data into the highlighting signals. 39. The circuit of claim 38, wherein the amplifier circuit comprises: a control signal generation circuit; And And an gain control circuit. 43. The image processor of claim 42, wherein the control signal generation circuit comprises an area signal interface for generating a switching control signal in accordance with the highlighting signals. 43. The image processor of claim 42, wherein the control signal generation circuit comprises an I2C bus interface for latching the area information according to a system clock. 43. The image processor of claim 42, wherein the control signal generation circuit includes a conversion circuit for converting the area information into analog contrast control signals. 46. The image processor of claim 45, wherein the conversion circuit comprises a digital-analog conversion circuit and a tanh ^-1 processor. 43. The image processor of claim 42, wherein the control signal generation circuit comprises a contrast and sharpness control circuit for generating sharpness control signals in response to the area information. 43. The image processor of claim 42, wherein the gain control circuit comprises a video clamp circuit for clamping the video signals to a predetermined range. 43. The image processor of claim 42, wherein the gain control circuit comprises a sharpness control circuit for varying the gain and peak width of the video signals. 43. The gain control circuit of claim 42, wherein the gain control circuit is configured to obtain a gain of a red video signal input through a red channel, a gain of a green video signal input through a green channel, or a gain of a blue video signal input through a blue channel according to the area information. And an image channel control circuit for controlling each channel. 43. The contrast control circuit of claim 42, wherein the gain control circuit simultaneously controls the gain of the red video signal input into the red channel, the gain of the green video signal input into the green channel, and the gain of the blue video signal input into the blue channel. An image processor comprising a control circuit. 43. The apparatus of claim 42, wherein the gain control circuit is Sharpness and contrast circuitry for highlighting the selected area; A buffer for buffering the video signals; A switching circuit for switching the video signals between the sharpness and contrast circuit and the buffer; And And a mixer for combining the video signals output from the sharpness and contrast circuits and the video signals output from the buffer. In a video processing system, User input for selecting region adjustment parameters within the image and selecting region adjustment parameters for adjusting a method of displaying the selected region in the image; And An image processor for highlighting the selected area in accordance with the area adjustment parameters, And the image processor highlights the selected area by increasing or decreasing contrast or sharpness for the selected area in response to the image adjustment parameters. 54. The video processing system of claim 53, wherein the region adjustment parameters identify contrast and sharpness for the selected region. 54. The video processing system of claim 53, wherein the image processor includes an area setting circuit that stores area information and adjustment parameters for the selected area. 54. The video processing system of claim 53, wherein the video processing system includes a main control circuit that enables horizontal line signals to highlight the selected areas. 54. The video processing system of claim 53, wherein the video processing system includes an area selector that automatically generates default windows for use with the selected area. 58. The video processing system of claim 57, wherein the region selector automatically adjusts the size and position of the default window until one of the default windows is selected as the selected region. 54. The video processing system of claim 53, wherein the video processing system automatically adjusts the selected area according to the horizontal resolution of the graphics card. In the display device, A contrast and sharpness adjustment circuit for adjusting a level of the video signal corresponding to the area information and the adjustment information among the video signals in response to area information, adjustment information and video signals, and outputting the adjusted video signal; An amplifier circuit for amplifying the adjusted video signal and outputting an amplified and adjusted video signal; And And a color display device for outputting the adjusted video signal in response to the output signal of the amplifying circuit, The area information is location information on a partial area selected by a user among full screens displayed on the display device. And the adjustment information is information related to contrast and sharpness of the partial region. 61. The display apparatus according to claim 60, wherein the area information, the adjustment information, and the video signals are input through the same serial port, parallel port, plug-n-play, or universal serial bus (USB). The display apparatus according to claim 60, wherein the contrast and sharpness adjustment information increase or decrease the contrast and sharpness of the partial region in response to the area information and the adjustment information. 61. The display apparatus according to claim 60, wherein the size of the partial region is varied in proportion to a user's selection, the frequency of the video signals, or a change in resolution. 61. The display device according to claim 60, wherein the display device further comprises a user adjustment device (OSD) for generating the area information and the adjustment information. In the method of adjusting the contrast and sharpness in the display device, Receiving region information on the position of the partial region selected by the user and adjusting information related to adjusting the contrast and sharpness of the video signal and the partial region among the entire screens displayed on the display device: Adjusting a level of a video signal corresponding to the area information and adjustment information among the received video signals and outputting the adjusted video signal; And Increasing or decreasing contrast and sharpness of the partial region in response to the adjusted video signal. In the display device, Receives position information about the position of the partial region selected by the user and adjustment information for adjusting the contrast and sharpness of the partial region among the entire screens displayed on the display device through the first interface, and receives it through the second interface. A contrast and sharpness adjustment circuit for adjusting a level of a video signal corresponding to the area information and adjustment information among the video signals and outputting the adjusted video signal; An amplifier circuit for amplifying the adjusted video signal; And And a color display device for displaying the amplified video signal output from the amplification circuit. 67. The apparatus of claim 66, wherein the contrast and sharpness adjustment circuit is An area setting circuit for receiving and storing the area information regarding the size and position of the partial area and for receiving and storing the adjustment information input in response to a control signal; And a highlighting adjuster for increasing or decreasing contrast and sharpness of the partial region in response to output signals of the region setting circuit. A computer system comprising a display device for displaying predetermined video signals input from a computer, the computer system comprising: Area information and adjustment information generation circuit for generating position information on the position of the partial area selected by the user and adjustment information for adjusting the contrast and sharpness of the partial area among the entire screens displayed on the display device; And A transmission interface for transmitting an output signal including the area information and the adjustment information to the display device; The display device A first interface for receiving an output signal output from the transmission interface; Contrast for adjusting the level of the video signal corresponding to the area information and the adjustment information among the video signals received through the second interface, and outputting the adjusted video signal in response to the output signal received at the first interface. And a sharpness adjustment circuit; And And a color display device for displaying the adjusted video signal. 69. The apparatus of claim 68, wherein the contrast and sharpness adjustment circuit is An area setting circuit for receiving and storing the area information including the adjustment information input in response to the size and position of the partial area and a control signal; And And a highlighting adjustment circuit which increases or decreases the contrast and sharpness of the partial region in response to an output signal output from the region setting session. In the method of adjusting the contrast and sharpness, Setting a partial region desired by the user among the entire screens displayed on the display apparatus through a predetermined input device:  Transmitting region information regarding the position of the partial region and adjustment information for adjusting the contrast and sharpness of the partial region to a first interface of a display device through a transmission interface of a computer; A video signal adjusted in response to the area information and the adjustment information received through the first interface by adjusting the level of the video signal corresponding to the area information and the adjustment information among the video signals received through the second interface. Outputting; And Increasing or decreasing the contrast and sharpness of the partial region in response to the adjusted video signal. 71. The method of claim 70, wherein the partial region is a region selected by window, object, region, full screen or auto selection. 71. The method of claim 70, wherein setting the partial region by auto-selection comprises: Hooking a predetermined message to retrieve a predetermined system file and obtain a window handle of the device currently displaying the video; And And automatically setting an area in which the video is currently being displayed. 71. The method of claim 70, wherein the contrast and sharpness of the area displayed on the display device are set by scanning the enable signal activated in the area when the partial area is not rectangular. In the method of adjusting the contrast and sharpness in the display device,  Receiving region information on a position of a partial region selected by a user from among the entire screens displayed on the display apparatus and adjustment information for adjusting contrast and sharpness of the partial region through a first interface; Adjusting a level of a video signal corresponding to the area information and the adjustment information among video signals received through a second interface: Outputting the adjusted video signal: and And increasing or decreasing contrast and sharpness of the partial region in response to the adjusted video signal. In the method of adjusting the contrast and sharpness of the partial region selected by the user in the full screen displayed using a user screen (On Screen Display), Displaying a default window having a predetermined size at a predetermined position: Changing the size or position of the default window by a user; And Adjusting the contrast and sharpness of the default window by adjusting the level of a predetermined video signal among the video signals received in response to the area information and the adjustment information; And the area information indicates the size or position of the default window and the jaw correction information is information for adjusting the contrast and sharpness of the default window. delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete delete

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