• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A monitor screen adjusting device and a method thereof are provided to reduce the calls to an after sales service center from users by displaying an image even if a resolution not supported by an LCD(Liquid Crystal Display) module is inputted. CONSTITUTION: A monitor screen adjusting device comprises a microcomputer(10) discriminating a video mode depending on the frequency of horizontal and vertical synchronizing signals and outputting a control signal to process signals corresponding to the video mode, a PLL(Phase Locked Loop)(20) generating a clock pulse, an A/D(Analog to Digital) converter(30) sampling R/G/B(Red/Green/Blue) video signals transmitted from a body and converting the R/G/B signals to digital R/G/B signals, a screen converting unit(50) compressing the 8-bit digital R/G/B signals converted by the A/D converter and converting the signals into video signals displayable on a screen by a signaling process, a scaler(60) signaling the digital R/G/B signals into video signals displayable on the screen, a switching unit(40) selecting the scaler or the screen converting unit with response to the control signal from the microcomputer, an OSD(On Screen Display) unit(80), and an LCD(Liquid Crystal Display) module(90) displaying video signals selectively output depending on the switching signal of the switching unit. Therefore, images are displayed by processing video signals even if a resolution not supported by the LCD module is inputted.
    公开号:KR20020013009A
    申请号:KR1020000046337
    申请日:2000-08-10
    公开日:2002-02-20
    发明作者:이재민
    申请人:구자홍；엘지전자주식회사；
    IPC主号:
    专利说明:

    Method and apparatus for controlling screen of monitor
    [12] The present invention relates to a monitor, and more particularly, to an apparatus and a method for adjusting a screen of a monitor.
    [13] In general, a monitor is a device that displays a video signal of a predetermined format transmitted from an associated PC video card through a series of signal processing such as digital sampling and scaling, and starts with a small monitor using a cathode ray tube. According to the trend of the increase in the size of the display device with the development of the typical flat panel display device suitable for large monitors, the digital method using the LCD is commercialized.
    [14] In addition, the image display capability of the monitor is represented by resolution, which may be classified into SVGA (800 × 600), XGA (1024 × 768), SXGA (1280 × 1024), and the like.
    [15] Hereinafter, a screen adjusting apparatus of a monitor according to the prior art will be described with reference to the accompanying drawings.
    [16] 1 is a block diagram illustrating an apparatus for adjusting a screen of a monitor according to the prior art.
    [17] As shown in FIG. 1, the apparatus for adjusting a screen of a monitor according to the related art determines a video mode according to horizontal and vertical sync signal frequencies transmitted from a main body, and outputs a control signal to perform a signal processing operation according to the video mode. A microcomputer (1), a PLL (Phase Locked Loop) (2) generating a clock pulse according to the control signal of the microcomputer (1), and an R / G transmitted from a main body according to a clock pulse supplied from the PLL (2). An A / D converter 3 for sampling and converting a B / B image signal into a digital signal, and the A / D converter 3 according to a control signal of the microcomputer 1 using a clock pulse supplied from the PLL 2. A scaler 4 for resizing the digital R / G / B video signal output from the frame unit in a frame unit, a frame buffer memory 5 for storing the output of the scaler 4, and the scaler ( 4) LCD module for displaying the output of Consists of 7 and, the microcomputer (1) OSD generating unit (6) for displaying the OSD when the resolution is not input permitted by the LCD module 7 according to a control signal.
    [18] Referring to the operation of the prior art configured as described above is as follows.
    [19] First, when an analog R / G / B video signal and a horizontal / vertical synchronization signal are input from a video card, the microcomputer 1 uses the horizontal / vertical synchronization signal to determine the resolution of the input image signal, that is, SVGA / XGA / SXGA. Figure out.
    [20] Subsequently, when the resolution of the input video signal is less than or equal to the resolution supported by the monitor, the microcomputer 1 corresponds to the resolution set by the user when the monitor is XGA (1024 × 768) and the input video signal is XGA or VGA. A control signal for setting the sampling clock of the A / D converter 3 is applied to the PLL 2 so as to perform digital conversion.
    [21] Accordingly, the A / D converter 3 generates an 8-bit digital RGB image by generating a 95 MHz sampling clock for sampling the XGA image signal in accordance with a horizontal synchronization signal timing according to the control signal of the microcomputer 1 to perform digital sampling. A signal is output and at the same time a dot clock for signal recognition of the scaler 4 is output.
    [22] Subsequently, the scaler 4 stores the output of the A / D converter 3 in the frame buffer memory 5 in frame units suitable for the XGA resolution according to the control signal of the microcomputer 1 and outputs the same to the LCD module 7. do.
    [23] Therefore, the LCD module 7 recognizes the 8-bit digital R / G / B image output from the scaler 4 according to the data enable (D / E) and the external clock (OUT CLK) and applies the horizontal / vertical synchronization signal. Display to match.
    [24] On the other hand, when the monitor is XGA-class and the resolution of the input video signal exceeds the monitor's expressive ability, the monitor requires 135 MHz sampling clock to convert the SXGA image to digital. Since only the sampling clock can be generated, the OSD image cannot be displayed on the screen, and an OSD of "Out of Range", that is, the allowable range is exceeded, is generated by the OSD generator 6 and displayed on the LCD module 7.
    [25] As described above, the monitor according to the prior art has the following problems.
    [26] First, when the user changes to the LCD monitor after using the CRT monitor, if the resolution set in the CRT monitor is not supported by the LCD monitor, only the OSD of “Out of range” is displayed so that the desired video signal is not displayed.
    [27] Secondly, in order to display a desired video signal, it is necessary to connect to the CRT monitor again, change the resolution that can be received from the LCD monitor, and then connect the LCD monitor.
    [28] Third, when the user does not know the characteristics of the monitor determines that the failure, and the repair request to the service center occurs.
    [29] The present invention has been made to solve the above problems, and an object of the present invention is to provide an apparatus for adjusting a screen of a monitor so that a corresponding image can be displayed on a screen even when a resolution not accepted by the LCD monitor is input.
    [1] 1 is a block diagram showing the configuration of a monitor according to the prior art
    [2] Figure 2 is a block diagram showing the configuration of the screen adjustment apparatus of the monitor according to the present invention
    [3] 3 is a block diagram showing an embodiment of a screen adjusting apparatus of a monitor according to the present invention;
    [4] Explanation of symbols for main parts of the drawings
    [5] 10, 100: A / D converter 20, 200: PLL
    [6] 30, 300: microcomputer 40, 400: switching unit
    [7] 50, 500: scaler 60, 600: frame buffer memory
    [8] 70, 700: screen converter 71, 701: first bit converter
    [9] 72: mixing unit 73, 702: storage unit
    [10] 74, 703: second bit converter 80, 800: OSD generation unit
    [11] 90, 900: LCD module
    [30] In accordance with an aspect of the present invention, there is provided an apparatus for adjusting a screen of an monitor, comprising: an A / D for converting an analog R / G / B video signal into a digital R / G / B video signal in a monitor having an LCD module. A microcomputer that checks whether the resolution of the input image signal received from the converter, the horizontal / vertical synchronization signal is a resolution that can be supported by the LCD module, and outputs a corresponding control signal; and when the resolution that is not supported by the LCD module is input, A screen conversion unit which receives and compresses the digital R / G / B video signal converted by the A / D converter according to the control signal of the microcomputer and converts it into a video signal that can be displayed on the screen through a predetermined signal processing process; When the output signal of the screen conversion unit or the resolution supported by the LCD module is input, the display signal may be displayed on the screen according to the control signal of the microcomputer. And a scaler to process in-phase signal, in response to a control signal of the microcomputer is composed by including a switch for selecting the scaler or screen converting units has its features.
    [31] In accordance with an aspect of the present invention, there is provided an apparatus for adjusting a screen of an monitor, in which a monitor having an LCD module converts an analog R / G / B video signal into a digital R / G / B video signal. And a microcomputer that checks whether the resolution of the video signal input by receiving a horizontal / vertical synchronization signal is a resolution that can be supported by the LCD module and outputs a corresponding control signal, and when the resolution that is not supported by the LCD module is input. A screen converting unit for receiving and compressing an 8-bit digital G video signal converted by the A / D converter according to a control signal of the A / D converter and converting the image into a video signal displayable on a screen through a predetermined signal processing process; When the digital G video signal output from the unit or a resolution supported by the LCD module is input, the digital G video signal is output on the screen according to the control signal of the microcomputer. And a switching unit for selecting the scaler or the screen converting unit according to the control signal of the microcomputer.
    [32] Hereinafter, an apparatus for adjusting a screen of a monitor according to the present invention will be described in detail with reference to the accompanying drawings.
    [33] 2 is a block diagram showing a screen adjustment apparatus of the monitor according to the present invention, Figure 3 is a block diagram showing an embodiment of the screen adjustment apparatus of the monitor according to the present invention.
    [34] As shown in FIG. 2, the apparatus for adjusting a screen of a monitor according to the present invention outputs a control signal to determine a video mode according to horizontal and vertical sync signal frequencies transmitted from a main body and to perform a signal processing operation according to the video mode. RPL transmitted from the main body in accordance with the microcomputer 10, a PLL (Phase Locked Loop) 20 for generating a clock pulse according to the control signal of the microcomputer 10, and a clock pulse supplied from the PLL 20. A / D converter 30 for sampling a G / B video signal and converting it into a digital R / G / B video signal, and if a resolution not supported by the LCD module is input, according to the control signal of the microcomputer 10. The screen conversion unit 50 which receives the 8-bit digital R / G / B video signal converted by the A / D converter 30, compresses it, and converts it into a video signal that can be displayed on the screen through a predetermined signal processing process. And, the screen conversion unit 50 A scaler 60 that receives a digital R / G / B video signal or a digital R / G / B video signal converted by the A / D converter 30 and processes the digital R / G / B video signal to be displayed on a screen; Switching unit 40 for selecting the scaler 60 or the screen conversion unit 50 in accordance with the control signal of the microcomputer 10, OSD generation unit for generating an OSD in accordance with the control signal of the microcomputer 10 And an LCD module 90 for displaying an image signal selectively output according to the switching signal of the switching unit 40.
    [35] The screen converter 50 is a first bit converter for converting a digital 8-bit R / G / B video signal output from the A / D converter 30 into a digital R / G / B video signal of a predetermined bit A mixing unit 52 for mixing the digital R / G / B image signal converted by the first bit converting unit 51, and storing the mixed image signal in the mixing unit 52 And a second bit converter 54 for converting the video signal stored in the storage 53 into a digital 8-bit R / G / B video signal.
    [36] Referring to the operation of the screen adjustment apparatus of the monitor according to the present invention configured as described above are as follows.
    [37] First, the microcomputer 10 determines the type of the image mode according to the frequency of the horizontal / vertical synchronization signal transmitted from the main body, and the sampling clock corresponding thereto may be supplied to the A / D converter 30 and the scaler 60. The control signal is output to the PLL 20.
    [38] In addition, the microcomputer 10 determines whether the image mode input from the main body is a resolution that can be supported by the LCD module 90, and outputs a control signal corresponding thereto to the switching unit 40.
    [39] The switching unit 40 transmits the digital R / G / B image signal output from the A / D converter 30 to the screen conversion unit 50 or the scaler 60 according to the control signal of the microcomputer 10. Optionally output
    [40] That is, when the resolution input to the microcomputer 10 is out of the resolution range supported by the LCD module 70, a digital R / G / B image signal is output to the screen converting unit 50 to process a predetermined signal. Through the conversion to the displayable signal on the LCD module 70.
    [41] The 8-bit digital R / G / B video signal input to the screen converting unit 50 is input to the first bit converting unit 51 and converted into a 6-bit digital R / G / B video signal to compress the signal. Let's do it.
    [42] The compressed digital R / G / B video signal is input to the mixing unit 52, mixed, reduced to 1/3, and stored in the storage unit 53.
    [43] The signal stored in the storage unit 53 is input to the second bit converter 54 according to the control signal of the scaler 60 and divided into 8-bit digital R / G / B video signals (R, G). , B amount is the same value) is applied to the LCD module 70 to display the screen.
    [44] In addition, if the resolution input to the microcomputer 10 is a resolution that can be supported by the LCD module 70, the digital R / G / B image signal is output to the scaler 60 to adjust the size in units of frames, thereby adjusting the frame. It is stored in the buffer memory 70. The image stored in the storage unit 53 is displayed through the LCD module 90.
    [45] As described above, an embodiment of a screen adjusting apparatus for a monitor according to the present invention will be described with reference to FIG. 3.
    [46] The microcomputer 100 determines the video mode according to the horizontal and vertical sync signal frequencies transmitted from the main body, and outputs a control signal to perform a signal processing operation according to the video mode, and a clock according to the control signal of the microcomputer 100. A PLL (Phase Locked Loop) 200 that generates a pulse, and an A / D converter for sampling and converting an R / G / B video signal transmitted from a main body to digital according to a clock pulse supplied from the PLL 200 ( 300, an A / D converter 300 for converting an input analog R / G / B video signal into a digital R / G / B video signal, and a resolution not supported by the LCD module 900 is inputted. The screen converter 500 converts only the digital G video signal converted by the A / D converter 300 into a video signal that can be displayed on the screen through a predetermined signal processing process according to the control signal of the microcomputer. And the screen conversion unit 50 A scaler 600 for receiving a digital G video signal outputted from 0) or a digital R / G / B video signal converted by the A / D converter 300 and processing the digital G video signal into a video signal displayable on a screen; The switching unit 400 for selecting the scaler 600 or the screen converting unit 500 according to the control signal of the microcomputer 100 of 600 and the OSD is generated according to the control signal of the microcomputer 100. OSD generation unit 800 and the LCD module 900 for displaying an image signal selectively output according to the switching signal of the switching unit 400.
    [47] The screen converting unit 500 receives only an 8-bit digital G video signal output from the A / D converter 300 according to the switching signal of the switching unit 400 and converts the digital G video signal of a predetermined bit into a digital G video signal. 1-bit converter 501, a storage unit 502 for storing a predetermined bit digital G image signal converted by the first bit converter 501, and a digital G image stored in the storage unit 502. And a second bit converter 503 which extracts the signal according to the control signal of the scaler 600, reconverts it to an 8-bit digital G video signal, and outputs the signal to the scaler 600.
    [48] Referring to the operation of the screen adjustment device of the monitor according to the present invention configured as described above, the microcomputer 100 determines that more signals are received by the LCD module 900 is input, and the screen conversion unit according to the determination result The control signal is output to the switching unit 400 to drive 500.
    [49] At this time, the screen conversion unit 500 receives only one input signal of the 8-bit digital R / G / B signal output from the A / D converter 300 to display the screen in a single color.
    [50] For example, as illustrated in FIG. 3, the first bit converter 501 of the screen converter 500 that receives the 8-bit digital G signal converts the input 8-bit signal into 6 bits to compress the signal. The converted signal is stored in the storage unit 502.
    [51] The 6-bit digital G video signal stored in the storage unit 502 is output to the second bit converting unit 503 according to the control signal of the scaler 600 to be displayed on the LCD module 900. The 8-bit digital G video signal, which is converted into a video signal, is passed through the scaler 600 and displayed on the LCD module 900.
    [52] As described above, the apparatus for adjusting a screen of a monitor according to the present invention does not display a resolution even if a resolution which is not supported by the LCD module is displayed on the screen through a predetermined signal processing, thereby requesting a service center from users. At the same time, it is possible to minimize the dissatisfaction of consumers.
    权利要求:
    Claims (6)
    [1" claim-type="Currently amended] In monitors with LCD modules,
    An A / D converter for converting an input analog R / G / B video signal into a digital R / G / B video signal;
    A microcomputer that receives a horizontal / vertical synchronization signal and determines whether the resolution of the input image signal is a resolution supported by the LCD module and outputs a corresponding control signal;
    When a resolution that is not supported by the LCD module is input, the digital R / G / B video signal converted by the A / D converter is received and compressed according to the control signal of the microcomputer and then compressed on the screen through a predetermined signal processing process. A screen converting unit converting the video signal into a displayable signal;
    A scaler for processing an image signal displayable on a screen according to a control signal of the microcomputer when an output signal of the screen conversion unit or a resolution supported by the LCD module is input; And,
    And a switching unit for selecting the scaler or the screen conversion unit according to the control signal of the microcomputer.
    [2" claim-type="Currently amended] The method of claim 1,
    The screen conversion unit
    A first bit converter for converting an 8-bit digital R / G / B video signal output from the A / D converter into a digital R / G / B video signal having a predetermined bit;
    A mixing unit for mixing the digital R / G / B video signal of a predetermined bit converted by the first converter;
    A storage unit for storing the video signal mixed by the mixing unit;
    And a second bit converter configured to extract the video signal stored in the storage unit according to the control signal of the scaler, convert the video signal into an 8-bit digital R / G / B video signal, and output the converted image signal to the scaler. Device.
    [3" claim-type="Currently amended] The method of claim 2,
    And the predetermined bit is six bits.
    [4" claim-type="Currently amended] The method of claim 2,
    And a video signal output from the mixing unit is a black and white signal in which R / G / B video signals are mixed.
    [5" claim-type="Currently amended] In monitors with LCD modules,
    An A / D converter for converting an input analog R / G / B video signal into a digital R / G / B video signal;
    A microcomputer that receives a horizontal / vertical synchronization signal and determines whether the resolution of the input image signal is a resolution supported by the LCD module and outputs a corresponding control signal;
    If a resolution that is not supported by the LCD module is input, one of the 8-bit digital R / G / B video signals converted by the A / D converter is received and compressed according to the control signal of the microcomputer. A screen converting unit converting the image signal into a displayable image signal through a signal processing process;
    A scaler for processing a video signal displayable on the screen according to a control signal of the microcomputer when a digital video signal output from the screen converter or a resolution supported by the LCD module is input; And,
    And a switching unit for selecting the scaler or the screen conversion unit according to the control signal of the microcomputer.
    [6" claim-type="Currently amended] The method of claim 5,
    The screen conversion unit
    A first bit converter which receives a digital video signal of an 8-bit digital R / G / B video signal output from the A / D converter and converts it into a digital video signal having a predetermined bit;
    A storage unit for receiving and storing a digital image signal of a predetermined bit converted by the first bit converter;
    And a second bit converter which extracts a predetermined bit of digital video signal stored in the storage unit according to the control signal of the scaler, converts the digital video signal into an 8-bit digital video signal, and outputs it to the scaler. .
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2000-08-10|Application filed by 구자홍, 엘지전자주식회사
    2000-08-10|Priority to KR1020000046337A
    2002-02-20|Publication of KR20020013009A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020000046337A|KR20020013009A|2000-08-10|2000-08-10|Method and apparatus for controlling screen of monitor|
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