Abstract:
A process that enables the user to select the type of display device to be adjusted. The user adjusts the brightness levels and color levels of the monitor to create a monitor profile for storage. The user then calibrates the selected monitor relative to a peripheral device such as a color printer device by comparing a printed test image to a displayed a gray scale image and a plurality of color images to establish a printer profile. The user then chooses to print an image by incorporating the printer profile or not.

Description:
CLAIM OF PRIORITY 
     Priority is claimed based on a prior provisional application entitled Method And Apparatus Of Adjusting Brightness Of A Display Monitor filed on May 4, 2001 and assigned application Ser. No. 60/288,443. A portion of the disclosure of this patent application contains material which subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the United State Patent and Trademark Office prosecution history or records, but otherwise reserves all copyrights whatsoever. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates in general to displaying apparatuses, and in more particular, to a displaying apparatus capable of adjusting brightness, contrast and colors of images appearing on the screen of the displaying apparatus so as to be identical absolute colors thereof. 
     2. Description of the Related Art 
     Generally, a displaying apparatus receives synchronous signals and red, green and blue (RGB) color signals supplied from a video card installed on a computer main body and displays them in the form of images on the screen thereof. The displaying apparatus includes a cathode ray tube CRT) monitor employing vacuum tubes or a liquid crystal display (LCD) monitor, and so on. 
     If an electron beam is emitted within the CRT monitor, the electron beam is bent by horizontal and vertical deflecting coils to strike a point on the screen. The inner surface of the screen is coated with phosphor, which emits lights if the beam is received therein. Since the electron beam continuously strikes each point on the screen, lights are emitted depending upon contact of the beam with the respective points, thereby displaying images on the screen. 
     The LCD monitor uses a property that if a voltage is applied to a liquid crystal layer stored in a space between two thin glass plates through a transparent electrode, a direction of orientation of the molecules of the liquid crystal is changed, and then the rate of light passing through the liquid crystal layer is changed. Usually, the liquid crystal in itself does not emit lights. A portion of the liquid crystal, to which a voltage is applied when lights are reflected by a reflecting plate in the backside thereof, becomes opaque, thereby making it unavailable for reflecting images. Because of this, the images are differentiated in brightness. The colors displayed on the screen of a display device often vary not only between different models of display devices, but also between different display devices of the same model. Efforts have been made in the art to calibrate individual display device in an effort to obtain uniformity between their colors. Frequently the black point is obtained by adjusting the whiteness in contrast of the monitor relative to an external, hand-held color card containing a black image. The color card must be present and used for each adjusting of the display device. Efforts such as the Interactive Method And System For Color Characterization And Calibration Of Display Device by Peter Engeldrum et al., U.S. Pat. No. 5,638,117, is an exemplar of the adjustment of the color in a central portion relative to a peripheral area by using a visual comparison between one or more matching cards viewed in juxtaposition to an image displayed on the screen of the display device. 
     The Method And Apparatus For Adjusting Television Display Control Using A Browser by T. A. Bruck, et al., U.S. Pat. No. 6,008,836, relies upon the user&#39;s adjustment of brightness in an effort to render an image within a colored box projected upon the screen, barely visible. This algorithm for executing this technique must be downloaded via WEB-TV from a web server. 
     The Color Calibration Of Display Device by J. M. Sach, U.S. Pat. No. 5,483,259, relies upon adjustment of the brightness control until a black area and an adjacent dark gray area become indistinguishable. 
     Japanese patent publication No. Heisei 08-194452, assigned to Canon, requires a user to adjust the color of the central portion of the screen to match peripheral patterns by using a keyboard, but lacks adjustment to obtain calibration of black points and white points. 
     The Display Calibration of A. D. Edgar, et al., U.S. Pat. No. 5,298,993, relies upon adjustment of the brightness by using a grid pattern, with adjacent patterns controlled to provide a continuous tone. 
     The Apparatus For Determining A Black Point On A Display Unit And Method Of Performing The Same by K. Ohara et al., U.S. Pat. No. 6,084,564, endeavors to facilitate a determination of a black point by setting a comparison brightness region in order to allow an easy distinction relative to a reference brightness region. A gamma point is controlled by using a standard region and a control region. 
     The Printer Calibration by Michael J. Vigneau, et al., U.S. Pat. No. 6,008,907, uses a pattern in an effort to adjust the color of the printed image to the display image formed on the screen of the display device. 
     Despite these efforts in the art, I have encountered significant problems attributable to color mismatch between peripheral devices, for example, monitors, printers, digital cameras, color scanners, and other appliances, and have recognized the need for a color management system that provides accurate and predicable color matching, and is available for use with any type of monitor as well as multi-monitor setups. 
     SUMMARY OF THE INVENTION 
     The present invention has been made keeping in mind the above-described shortcoming, and an object of the present invention is to provide a displaying apparatus which can be adjusted so as to allow colors of images displayed on the screen to be consistent with actual colors thereof. “Color”, is used in this application in a general sense to mean the hue, saturation and value for light sources, or hue, shade and value for objects. The term may also be used to compensate black, white or grayscale. 
     This and other objects of the present invention may be achieved by providing a method for adjusting a color of an image displayed on a displaying apparatus having a screen on which an image is displayed, comprising the steps of displaying the image on the screen; providing a non-active area so as to be adjacent to the image within the screen; and adjusting the brightness of the image to be matched with that of the non-active area. 
     Preferably, the method further comprises the step of reducing the size of the image to a predetermined size in the screen. 
     Preferably, the method further comprises the step of setting up the brightness and contrast of the image to the maximum value before the step of adjusting the brightness. 
     Preferably, the image includes a black color area inside thereof. 
     Preferably, the method further comprises the step of setting up a black point of a gamma property curve when the brightness of the black color area within the image matches with the brightness of the non-active area. 
     Preferably, the method further comprises the step of setting up a white point of the gamma property curve based on the black point and the maximum value of the brightness. 
     Preferably, the method further comprises the step of presenting a light condition setting window for selecting a light type of neighboring environment. 
     Preferably, the method further comprises the step of presenting a color adjust selecting window relative to each of R, G, B colors of the image. 
     Preferably, the method further comprises the steps of selecting at least one of the R, G, B colors in the color adjust selecting window; and adjusting the selected color so as to be matched with a reference color based on the black point and the white point. 
     Preferably, the method further comprises the steps of displaying a predetermined image having a reference contrast on the screen; and matching the contrast of the image with the reference contrast. 
     Preferably, the method further comprises the step of providing the non-active area so as to be adjacent to the predetermined image in the screen. 
     Preferably, the method further comprises the step of matching the contrast of the non-active area with the reference contrast. 
     Preferably, the method further comprises the step of setting up the contrast to the minimum value before the step of matching the contrast. 
     Preferably, the method further comprises the step of setting up a white point of a gamma property curve when the contrast of the non-active area is matched with the reference contrast. 
     Preferably, the method further comprises the step of setting up a black point of the gamma property curve through the white point and the minimum value of the contrast. 
     Preferably, the method further comprises the step of generating and storing a color profile including the white point, the lighting conditions and at least one of the adjusted colors. 
     According to another embodiment of the present invention, this and other objects may also been accomplished by providing an output color adjusting method of a displaying apparatus, comprising the steps of outputting a sample image to a printing device; presenting a reference color image based on a predetermined black point and white point; and adjusting the color so as to allow the color of the sample image to be matched with the reference color image. 
     Preferably, the reference color image includes reference color images relative to each color of R, G, B, C, M and Y. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete appreciation of the present invention, and many of the attendant advantages thereof, will become readily apparent as the same becomes better understood by reference to the following detailed description when considered in conjunction with the accompanying drawings in which like reference symbols indicate the same or similar components, wherein: 
         FIG. 1  is a flow chart showing a color-adjusting method for a CRT monitor according to the present invention; 
         FIG. 2  is a flow chart showing a color-adjusting method for an LCD monitor according to the present invention; 
         FIG. 3  is a flow chart showing a color-adjusting method in the case of output by a printer according to the present invention; 
         FIG. 4  shows an initial screen according to a color-adjusting program employing the present invention; 
         FIG. 5  shows a screen on which brightness of the CRT monitor is set up according to selection of an initial status set-up in  FIG. 4 ; 
         FIG. 6  shows a screen on which brightness of the LCD monitor is set up according to selection of an initial status set-up in  FIG. 4 ; 
         FIG. 7  shows a screen for setting up a lighting environment according to selection of the initial status set-up in  FIG. 4 ; 
         FIG. 8  shows a screen for color adjustment according to selection of screen color adjustment in  FIG. 4 ; 
         FIG. 9  shows a screen for adjusting brightness of a printer when color adjustment of an output by a printer is selected in  FIG. 4 ; 
         FIG. 10  shows a screen for adjusting colors of a printer when color adjustment of an output by a printer is selected in  FIG. 4 ; 
         FIG. 11  shows a screen for outputting a sample image when printing of the sample image is selected in  FIG. 4 ; 
         FIG. 12  is a control block diagram of a CRT displaying apparatus; and 
         FIG. 13  is a control block diagram of an LCD displaying apparatus. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       FIG. 12  shows a control block diagram of a CRT monitor which is comprised of a video card  91  outputting RGB video signals and horizontal and vertical (H/V) synchronous signals, a video signal processing part  92  converting the RGB video signals into digital signals and synchronizing with the H/V synchronous signals, a deflection circuit part  93  deflecting the electron beam and a microcomputer  95  controlling the digitally converted RGB signals to be displayed on the screen according to the synchronous signal. These elements are well known in the art and need not be further explained herein. 
       FIG. 13  shows a control block diagram of an LCD monitor which is comprised of a video card  101 , a video processing part  102  converting RGB video signals into digital signals and adjusting the size of the video signals adaptively to comply with H/V synchronous signals, a frame memory  106  temporarily storing therein the video signals processed by the video processing part  102 , a panel driving part  103  driving an LCD panel  107  and a microcomputer  105  controlling the video processing part  102  so as to allow the video signals to be converted adaptively for display on the LCD panel  107  based on the synchronous signals. These elements are well known in the art and need not be further explained herein. 
     However, due to loss of RGB video signals, allowable tolerance of each part and difference in lights-emitting efficiency of displaying devices and so on, colors of images displayed on the screen of the CRT or the LCD become varied depending upon the makers of displaying apparatuses and respective models thereof. This has caused a problem that there exists a difference in colors of images outputted in image-outputting devices such as monitors, printers, digital cameras, colorful scanners, etc. 
     In digital photographic editing for example, photographs or other images are scanned and digitized, and are then displayed on a computer&#39;s monitor. A user may then alter certain attributes of the displayed digital image, and alterations appear on the display screen of the monitor. The altered image may be printed by a color printer on a sheet of paper or other printable media. 
     Gamma is a measure of the relationship between the brightness of color as it appears on a display screen of the monitor and a signal amplitude used by the monitor to generate that color. 
     Properties of displaying colors on a CRT monitor are briefly described as follows. Conventionally, it has been known that CRTs have a non-linear display characteristic on input value X applied to a display driver vs. relative brightness Yd. A transit input value X, leaving the zero level of the relative brightness, is called “Black Point” (BP). As is well known in the art, by representing the minimum level of each of the input value X, the relative brightness Yd with a digital number 0 (zero), and the maximum level thereof with a digital number 255, the display characteristic of the CRT can be approximated with the following exponential functions:
 
When  X&lt;BP , then  Yd= 0.
 
When  X&gt;BP , then  Yd={ ( X−BP )/(255− BP )} γ ×255,
         #where γ is a predetermined constant specific to the CRT display but is changeable due to, for example, aging of the CRT display.       

     The black point BP can be changed by a brightness adjusting mechanism provided in the display. The black point also changes due to aging of the display and is seen to be different in level depending on the perception of individuals watching the display. Therefore, it becomes possible to set up a correct level of the black point by matching the input value with the color actually recognized. 
       FIG. 1  is a flow chart showing a color-adjusting method for the CRT monitor according to the present invention. Referring to this figure, the present invention will be described with focusing on an execution sequence of a color adjusting program realized as a software based on the color-adjusting method according to the present invention. 
     As illustrated in  FIG. 1 , when it is determined that the monitor is a CRT monitor at S 0 , a predetermined image (see  FIG. 5 ) is first displayed (active area of the screen) and brightness and contrast of the image are set up to the maximum value by use of a bright adjusting button and a contrast button on the CRT monitor at S 1 . Four corners of the image are respectively formed with an outline to indicate the size of the image, and a color of the inside image area is set to black. Next, the image is reduced to a predetermined size at S 2 . As the image is reduced, the reduced image is displayed in the center of the screen. Reduction can be made to an arbitrary fraction of its normal screen size, to perhaps forty (40%), fifty (50%) percent or approximately sixty (60%) percent. 
     The remaining area surrounding the reduced image constitutes a non-active area and is indicated in black (see  FIG. 5 ), and the black area within the reduced image is indicated lighter than the non-active area (that is, a black raster area of the CRT), creating a difference in brightness. Therefore, in order to match the brightness of the black area within the reduced image to the brightness of the non-active area on the outer circumference of the reduced image, a user operator part is adjusted so as to make the color values appear identical by reducing the brightness of the reduced image at S 3 . The black point of the monitor is set up by adjusting the brightness of the monitor, and the white point of the monitor can be obtained by adjusting the contrast value to the maximum value based on the set black point. As a next step, the reduced image is restored to its original size at S 4 . 
     Next, at S 5  a lighting environment setting is then selected from an initial menu window shown in  FIG. 4  and a lighting condition is selected according to the ambient light reference (fluorescent light, incandescent light, or sunlight) of the monitor, to set up the user&#39;s environmental lighting condition, and an ICM (image color matching) profile containing the black point, the white point and lighting information is generated and stored in memory at S 6 . 
     Thereafter, at S 7  a screen color adjustment is selected, as seen in  FIG. 4  (to be described later), to adjust the color, and a color adjusting screen is displayed (see  FIG. 8 ) for adjusting a gamma value so as to allow the red, green and blue colors to be matched with actual colors. One of the red, green or blue colors is selected in the color adjusting screen at S 8 , and color adjusting button (or a scroll bar) is adjusted at S 9  so as to match the color of the inner rectangle with the color of an outer rectangle which indicates a color relative to a random reference gamma point in a gamma curve obtained by the black point and the white point. S 10  indicates that the other two colors are also adjusted, by repeating steps S 8  and S 9  for each remaining color. 
     Once the color adjustment is completed, a property of gamma is added in the above-described ICM profile, thereby generating a new ICM profile at S 11  and stored in memory, that is, the ICM profile is updated with the latest information obtained in steps S 7 -S 10 . Then a color image is displayed based on the updated ICM profile at S 12 . 
       FIG. 2  is a flow chart showing a color-adjusting method for an LCD monitor according to the present invention. As illustrated in  FIG. 2 , when it is determined that the monitor is an LCD monitor at P 0 , since a color and a shade of the image on the LCD monitor are seen differently relative to a user&#39;s eyes, the main body of the LCD monitor is first adjusted, to thereby adjust a viewing angle of the monitor appropriately and correctly at P 1 . Next, a contrast is set to a minimum value through a user operator part of the monitor, to thereby set up a white point of the monitor at P 2 . The contrast is adjusted so as to allow a contrast of a sample image shown in  FIG. 6  (to be described later) to be matched with a contrast of the screen at P 3 . At this time, a black point of the LCD monitor can be obtained by adding the adjusted contrast brightness to the white point. 
     A lighting environment setting is then selected from an initial menu window shown in  FIG. 4 , to set up the environmental lighting condition, thereby selecting a lighting condition according to the ambient light reference (fluorescent light, incandescent light, or sunlight) of the monitor at P 4 , and an ICM profile including the black point, the white point and lighting information is generated at P 5  and stored in memory. 
     As a next step, the screen color adjustment icon is selected in  FIG. 4 , to adjust a gamma property of a color of the image P 6 , the color adjusting screen (see  FIG. 8 ) for adjusting so as to allow the colors of red, green and blue to be matched with actual colors, and one of the red, green or blue colors is selected in the color adjusting screen at P 7 . The color of the inner rectangle is adjusted so as to be matched with the color of the outer rectangle indicated in color based on the random reference gamma point in the gamma curve obtained by the black point and the white point at P 8 . The remaining two colors are selected and adjusted through repetition of the steps P 7  and P 8  at P 9 . When the color adjustment is completed, a new ICM file is generated by adding the property of gamma to the earlier stored ICM file having stored therein the black point, the white point and the lighting conditions at P 10 . A color image is then displayed on the screen based on the updated ICM profile at P 11 . 
       FIG. 3  is a flow chart generating a color profile for a color image printer according to the present invention. Referring to  FIGS. 9 through 11  (to be described later), a method for adjusting a printer color will be applied through the following processes.  FIG. 4  shows an adjustment menu for selecting printer adjustment, as will be described later. 
     As shown in the  FIG. 3 , at T 1  a predetermined sample image (see  80  in  FIG. 11 ) is printed out by a printer. Next, the user must select in  FIG. 4  one of a brightness adjustment or color adjustment. In  FIG. 3 , I show that the user chooses brightness adjustment in step T 2 , but the order of choice is up to the user. 
     When the brightness adjustment is chosen at T 2 , a multi-shaded gray scale image is displayed on the screen. For brightness adjustment, step T 3 , the user adjusts the gray scale on the screen ( FIG. 9 , to be described later) of the monitor, while comparing it with the printed sample specimen, using two adjustment control functions of the monitor. One of which is an overall adjustment and the other of which is an individual (fine) adjustment. Overall adjustment is used to modify the brightness of the entire gray scale at one time. Fine adjustment is used to modify the brightness of one particular shade of gray. The user can adjust the full range of brightness through the use of a slider bar displayed on the screen. Step T 3  establishes the black and white characteristics of the printer. A test print can then be made to again compare the printed result with the displayed gray scale images. 
     The user then makes a selection of a color adjustment for adjusting color ( FIG. 4 ). When the color adjustment is chosen, a plurality of color images (Red, Green, Blue, Cyan, Magenta, Yellow) are displayed on the color adjusting window ( FIG. 10 , to be described later). 
     When a color adjusting function of a printing image is selected in  FIG. 4 , one of the plurality of colors (Red, Green, Blue, Cyan, Magenta, Yellow) is selected from the color adjusting window at T 4 . Overall adjustment or minute adjustment of color grade is performed while comparing the printed sample image to the selected color of the image on the screen at T 5 . That is, during step T 5  the user adjusts the screen color of the selected color image via a horizontal color scale control while comparing the printed sample image to the selected color image. The color of the selected color image can then be further adjusted by fine tuning (minute adjustment) during comparison with the printed sample image by user movement of three (RGB) vertical slider bars until the user perceives the color of the selected color image is identical to the printed sample image. In step T 6 , the user repeats steps T 4  and T 5  for each of the remaining five colors. 
     When adjustment of the color grade is completed, a printer profile is generated and stored at T 7 . A user then browses for and selects a random image to be printed out at T 8 . The selected image will be displayed on the screen. Then at T 9 , the user browses for and selects the printer profile that contains current information about the user&#39;s printer, in order to obtain image matching. An image signal whose color signal is adjusted based on the selected printer profile is outputted from the video card, and the image whose color is adjusted by the printer profile is displayed on the screen. At this time a pair of images will also be displayed on the screen. One of these images will lot show what will be a printing result without use of the printer profile and the other will show what will be a printed result using the printer profile. The user can select to print the image without the printer profile or the image with the printer profile. Subsequently, since the purpose of the color adjustment is to obtain an image with the printer profile that has the more accurate representation, in step T 10  the user selects to print the image with the printer profile. Steps T 2  through T 9  may been repeated if the color of the displayed simulated image does not match the printed image which has been generated using the printer profile for the image printed. 
       FIG. 4  shows an initial menu window  10  according to a color-adjusting program employing the present invention,  FIG. 5  shows a window  20  on which brightness of the CRT monitor is set up according to selection of an initial status set-up in  FIG. 4  when the monitor is a CRT monitor, and  FIG. 6  shows a window  30  on which brightness of the LCD monitor is set up according to selection of the initial status set-up in  FIG. 4  when the monitor is an LCD monitor. 
     As illustrated in  FIG. 4 , the initial menu window  10  of the color-adjusting program is provided with a monitor color-adjusting icon  11  and a printer color-adjusting icon  13 . Below the monitor color-adjusting icon  11  are provided an icon  11   a  for setting up an initial state of the monitor and an icon  11   b  for adjusting a screen color, as lower menus (sub-menus). Below the printer color-adjusting icon  13  are provided an icon  13   a  for printing a sample image, an icon  13   b  for adjusting an output color and an icon  13   c  for adjusting brightness, as lower menus. 
     When the initial state setting icon  11   a  is selected in  FIG. 4 , a monitor type selecting as window, a brightness adjusting window and a lighting environment setting window are presented in sequence. As settings are completed in each window, the windows are transformed sequentially for the next set up. 
     If the monitor color adjusting icon  11   b  is selected from the initial menu window  10 , the monitor type selecting window (not shown) is presented in order to select either of a CRT monitor and an LCD monitor. If the CRT monitor is selected from the monitor type selecting window, the brightness adjusting window  20  formed with the outlines is displayed as shown in  FIG. 5  in order to indicate a size of the window. Here, if the horizontal size thereof is reduced after setting up brightness and contrast to the maximum values through the user operator part  24 , the horizontal value of the brightness adjusting window is reduced, thereby forming the non-active area  22  respectively in right and left sides of the brightness adjusting window  20 . At this time, the user sets up the initial state of the monitor by reducing brightness so as to allow the inside area of the brightness adjusting window  20  to be matched the brightness of the non-active area  22 . 
     If the LCD monitor is selected from the monitor type selecting window (not shown), the brightness adjusting window  30  of the LCD monitor is displayed as seen in  FIG. 6 . The brightness adjusting window  30  of the LCD monitor is, as seen in this figure, comprised of a reference contrast block  31  below it. Under the status that the contrast of the LCD monitor is set up to the minimum using the user operator part  33 , the contrast is again adjusted so as to match the contrast of the non-active area  35  of the screen based on the reference block  31 . 
       FIG. 7  shows a lighting environment setting window  40  displayed after setting up the brightness adjustment at the time of selection of the initial status set-up  11   a  in  FIG. 4 . In order to select the lighting condition of a use environment of the monitor, there are provided an icon  41  for fluorescent light, an icon  43  for incandescent light and an icon  45  for sunlight. The fluorescent light icon  41 , incandescent light icon  43  and sunlight icon  45  each have a respective plurality of icons as lower menus, to select the illuminance of the lights (200, 300, 400, 500 lux). Selection is made by use of scrolling buttons  46 . 
       FIG. 8  shows the color adjusting window  50  according to selection of screen color adjustment  11   b  in  FIG. 4 . The color adjusting window  50  is comprised of a plurality of color selecting icons  51  for selecting one of R, G and B colors and adjusting its color value, a color adjusting block including a color block  55  currently active in a reference color block  56  of the selected color and a color adjusting button  58  for adjusting the color value of the selected color. Here, if the color adjusting button  58  is adjusted, the color of the color block  55  becomes identical to the reference color block  56  provided outside the color block  55  because the color value of the color block  55  currently active has been increased or decreased. In this way, the color adjusting button  58  is selected so as to allow each color of R (red), G (green) and B (blue) to be matched with the reference color block  56 , and when a store icon  53  is selected, then an ICM profile is generated and stored in memory. 
       FIG. 9  shows a window  60  for adjusting brightness of the printer when the brightness adjustment icon  13   c  is selected in  FIG. 4 ,  FIG. 10  shows a window  70  for adjusting colors of the printer when color adjustment icon  13   b  is selected in  FIG. 4 ,  FIG. 11  shows a window for outputting a sample image when the print sample image icon  13   a  is selected in  FIG. 4 . As explained earlier, the user first prints the sample image (see  FIG. 11 ) to provide a printed reference image used when adjusting brightness and colors of the output by the printer, and then the user adjusts the brightness and the colors from the printer brightness adjusting window  60  and the printer color adjusting window  70  referring to the printed image. 
     The printer brightness adjusting window  60  shown in  FIG. 9  is provided with an overall adjusting icon  64  for adjusting the brightness of the entire gray scale of a color value grade indicating bar  61  at one time, an individual adjusting icon  65  is provided for fine adjustment of the brightness of each gray color block in each color value grade in the color value grade indicating bar  61  indicating the gray color of various luminosities gradually, and a slider bar  63  is used for adjusting the color value responsive to selection of the overall adjusting icon  64  or the individual adjusting icon  65 . A window converting icon  68  is provided for switching from the current screen to a previous screen or a next screen. Selection of the next screen after brightness adjustment is completed converts the printer brightness adjusting window  60  into the printer color adjusting window  70 . 
     When the overall adjusting icon  64  is selected, all the grades of brightness can be adjusted at one time. When the individual adjusting icon  65  is selected, each grade of color value can be selectively adjusted. Therefore, if the user desires to adjust each grade of color value selectively, the individual adjusting icon  65  is selected, a color value grade which does not match with the printed image is selected, using a mouse, in the color value grade indicating bar  61  and the brightness thereof is adjusted through the slider bar  63 . Since the color value is adjusted in the printer color value adjusting window  60 , it is possible to match the color value seen on the screen with the color value of the printed image. 
     The printer color adjusting window  70  shown in  FIG. 10  is provided with a color selecting part  71  for selecting one of R (red), G (green), B (blue), C (cyan), M (Magenta) and Y (yellow), a color grade adjusting part  73  having an adjusting bar for adjusting a brightness grade of a selected color and a minute (fine) adjusting part  75  having R, G and B slider bars for minutely adjusting the colors of R (red), G (green), B (blue), C (cyan), M (magenta), Y (yellow). 
     The color of the printed image and that of the image on the monitor can be consistently adjusted by use of the color selected in the color adjusting window  70 . A color desired by the user to be adjusted is selected in the color selecting part  71 . The selected color is displayed in the color grade adjusting part  73  and the color is adjusted using the adjacent slider bar to achieve a color that is most similar to the color of the printed image. If necessary, the color can be further adjusted using the slider bars in the minute adjusting part  75 . A store icon  77  is selected if the color adjust is completed, thereby generating and storing a printer profile. 
     Here, the color adjusting method in the above-described embodiment is realized as an application software. However, the color adjusting method according to the present invention is capable of adjusting a color directly in the monitor, with realization of a program controlled by a microcomputer provided in the displaying apparatus. 
     With this configuration, a color of an image output from a video card of a computer main body is adjusted to match with an actual image on a screen of the displaying apparatus. The color of the image displayed on the screen and that of a printed image output from a printer can be adjusted to be matched with each other. In addition to the printer, colors between other image indicating apparatuses such as a scanner, a digital camera, etc. can be adjusted to be matched. 
     As described above, according to the present invention, there is provided a color adjusting method of a displaying apparatus capable of adjusting so as to match a color of the image indicated on the screen with an actual color. 
     Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.