JP2009162946A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device in which the convenience of a function for adjusting display color is improved. <P>SOLUTION: In the image display device, a chromaticity diagram (color sample image) 32 where a color sample of each color defined by a chromaticity coordinate (color coordinate) is displayed in a position corresponding to the chromaticity coordinate is displayed and a cursor 31 is displayed on the chromaticity diagram 32. In the image display device, the cursor 31 is moved on the chromaticity diagram 32 according to an instruction from a user, so that the display color is adjusted so as to make displayed white color defined by the chromaticity coordinate corresponding to the display position of the cursor 31. The process of changing the white color according to the operation of the user is visually shown and it is easy to intuitively understand the degree of the change of the display color by the degree of the movement of the cursor. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an image display apparatus that displays a color image, and more particularly to an image display apparatus that can change a display color by a user operation.

  An image display device that displays a color image displays each color of R (red), G (green), and B (blue), and expresses various colors by adjusting the luminance of each of the RGB colors. When all the RGB luminance values are maximum, the color displayed by the image display device is white. In the conventional image display device, the display color can be adjusted by adjusting the ratio of the RGB signals. Specifically, the display color is adjusted by adjusting the amplification gain when the luminance signals are determined by amplifying the RGB color signals based on the image data. For example, if the gain of R is made larger than that of GB, the white color displayed by the image display device is more reddish and the color temperature is lowered.

Some conventional image display devices display an adjustment screen for adjusting the display color, and can adjust the display color using a GUI (Graphic user interface). FIG. 7 is a schematic diagram illustrating an example of an adjustment screen for adjusting the display color. In the example shown in FIG. 7A, a number line indicating the color temperature is displayed, and a cursor is displayed on the number line. By moving the cursor with the GUI, the color temperature is designated, and the RGB gain is adjusted according to the designated color temperature, and the display color is adjusted. In the example shown in FIG. 7B, for each of RGB, a number line indicating the amount of change in gain is displayed as a numerical value, and a cursor is displayed on the number line. The numerical values shown in the figure are arbitrary units. By moving the cursor using the GUI, the amount of gain change for each color is specified, and the RGB gain is adjusted according to the specified amount of change. Patent Document 1 discloses an image display device capable of adjusting a display color using a GUI.
JP 2004-297477 A

  When adjusting the display color using the adjustment screen shown in FIG. 7, there is a problem that it is not intuitively known how much the display color changes when the color temperature or the gain of each color is changed. In particular, when the image display device is a consumer television receiver, since most users do not have knowledge of the relationship between the color temperature or the gain of each color and the display color, the display color for the user can be changed. There is a problem that the convenience of the function to be adjusted is poor.

  The present invention has been made in view of such circumstances, and the object of the present invention is to display the display color by visually showing how white changes according to the operation of the user. An object of the present invention is to provide an image display device in which the convenience of the function to be adjusted is improved.

  An image display device according to the present invention displays a color sample image in which color samples defined by color coordinates in a predetermined color space are arranged at positions corresponding to the color coordinates in an image display device that displays a color image. And a means for displaying a cursor on the color sample image, and a white color that can be displayed is displayed in a color defined by color coordinates corresponding to a position on the color sample image on which the cursor is displayed. Adjustment means for adjusting color, receiving means for receiving an instruction to move the cursor on the color sample image, and moving the cursor display position on the color sample image according to the instruction received by the receiving means And a moving means for moving.

  In the present invention, the image display device displays a color sample image in which the color sample of each color defined by the color coordinates in a predetermined color space is displayed at a position corresponding to the color coordinates, and the cursor is displayed according to an instruction from the user. Is moved on the color sample image, and the display color is adjusted so that the displayed white color becomes the color defined by the color coordinate corresponding to the display position of the cursor.

  In the image display device according to the present invention, the receiving unit has a unit for receiving a movement instruction for continuously moving the cursor on the color sample image, and the moving unit is received by the receiving unit. According to a movement instruction, there is provided means for continuously moving the display position of the cursor on the color sample image.

  In the present invention, the image display device continuously moves the cursor display position on the color sample image in accordance with an instruction from the user, and adjusts the display color corresponding to the cursor display position.

  The image display device according to the present invention further includes storage means for storing a plurality of parameter values in which parameter values that can be converted into color coordinates are predetermined, and the accepting means includes a plurality of parameter values stored by the storage means. A position on the color sample image corresponding to the color coordinates obtained by converting the parameter value selected in accordance with the selection instruction received by the receiving means. And a means for moving the display position of the cursor.

  In the present invention, the image display device stores a plurality of parameter values in advance, selects one of the parameter values according to an instruction from the user, and displays the cursor display position according to the selected parameter value. And adjust the display color.

  In the image display device according to the present invention, the color coordinates are chromaticity coordinates, the color sample image is a chromaticity diagram, and the adjusting means has a white chromaticity that can be displayed by the color displayed by the cursor. The display color that is the chromaticity represented by the chromaticity coordinates corresponding to the position on the degree diagram is configured to be adjusted.

  Further, in the present invention, the color sample image is a chromaticity diagram in which each color defined by chromaticity coordinates such as xy or uv is distributed, and the image display device has white chromaticity corresponding to the display position of the cursor. The display color is displayed so that the chromaticity represented by the chromaticity coordinates is obtained.

  In the present invention, the user moves the cursor on the color sample image while visually recognizing the displayed color sample image, and changes the display color so that the white color becomes the color indicated by the cursor on the color sample image. Can be adjusted. Since the cursor moves on the color sample image according to the user's operation, it is clearly shown how the white color changes according to the user's operation, and how much the cursor moves Intuitively understand whether the display color changes. Accordingly, it is possible to easily and intuitively adjust the display color displayed by the image display device to a color desired by the user, and the convenience of the function of adjusting the display color in the image display device is improved. The present invention has an excellent effect.

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
FIG. 1 is a block diagram showing the internal configuration of the image display apparatus of the present invention. The image display device includes a tuner 25 that receives a broadcast signal, and an external input unit 26 that receives data transmitted from an external device such as a recording device (not shown). The tuner 25 and the external input unit 26 are selectors. 24. The tuner 25 is connected to an antenna (not shown), receives a broadcast signal of analog broadcast or digital broadcast, and inputs data obtained by demodulating the received broadcast signal to the selector 24. The selector 24 is connected to the separation unit 23, selects either the tuner 25 or the external input unit 26, and inputs data from the selected side to the separation unit 23.

  The separation unit 23 separates the data input from the selector 24 into data related to an image, data related to sound, data related to an electronic program guide, and the like. The separation unit 23 is connected to the decoder 21 and inputs each of the separated data to the decoder 21. The decoder 21 decodes each data input from the separation unit 23. For example, the decoder 21 decodes data related to an image into image data having a predetermined format, and decodes data related to sound into audio data having a predetermined format. An audio processing unit 22 and an image processing unit 16 are connected to the decoder 21, and the decoder 21 inputs the decoded audio data to the audio processing unit 22 and inputs the image data to the image processing unit 16. The sound processing unit 22 executes a process of outputting sound according to the sound data to sound output means such as a speaker (not shown).

  The image processing unit 16 performs image processing necessary for displaying an image according to the image data in accordance with the image data input from the decoder 21. The image processing unit 16 performs necessary image processing such as AD conversion, YC separation, IP conversion, and color matrix conversion to generate color signals indicating the intensity of each color of the image RGB to be displayed. Output. A display unit 15 using a liquid crystal panel or a plasma panel is connected to the image processing unit 16 via a gain control unit 14. The gain control unit 14 generates each color signal component by amplifying the color signals of each RGB color with a preset gain, and inputs the generated signal component to the display unit 15. The display unit 15 displays a color image by developing each color of RGB with the brightness indicated by the input signal component.

  The image display device further includes a calculation unit that performs a calculation, a RAM that stores information associated with the calculation, a ROM that stores a program necessary for the calculation, and performs a calculation process necessary for the image display device. A control processing unit 11 for controlling the operation of each unit is provided. The control processing unit 11 is connected to the gain control unit 14 and the display unit 15, and further receives a signal from a memory unit (storage means) 12 composed of a nonvolatile memory and a remote controller (remote controller) not shown. A remote control receiving unit (accepting means) 13 for receiving is connected. The memory unit 12 stores material data of a color adjustment screen for adjusting the display color displayed by the display unit 15, and the control processing unit 11 performs color adjustment using the material data stored in the memory unit 12. A process screen is created and a color adjustment screen is displayed so as to overlap the image displayed on the display unit 15. Further, the memory unit 12 stores the gains of the set RGB colors, and the control processing unit 11 performs a process of setting the gain that the gain control unit 14 amplifies the color signal to the gain stored in the memory unit 12. . The remote control receiving unit 13 is an accepting unit in the present invention, accepts various instructions transmitted by the user operating the remote control, and the control processing unit 11 performs processing according to the instructions received by the remote control receiving unit 13. Execute.

  FIG. 2 is an explanatory diagram showing an example of a color adjustment screen displayed by the image display apparatus of the present invention. The color adjustment screen displays a chromaticity diagram 32, a color temperature display area 33 in which a plurality of buttons each corresponding to a predetermined color temperature are displayed, and a number line indicating a gain change amount for each of RGB. And a gain display area 34. The chromaticity diagram 32 is an image in which each color defined by chromaticity coordinates such as xy or uv is distributed, and although not fully expressed in FIG. 2, color samples of each color defined by the chromaticity coordinates are shown. It is displayed at the position corresponding to the chromaticity coordinates. That is, the user can visually confirm the color by looking at the chromaticity diagram 32. The chromaticity diagram 32 corresponds to the color sample image in the present invention.

  In the color temperature display area 33, a plurality of buttons with characters indicating high, low, medium or high color temperature are displayed, and the memory unit 12 realizes a predetermined color temperature associated with each button. For this reason, the gain of each RGB color is stored. For example, gains of RGB colors for realizing color temperatures of 8000K, 7000K, 6000K, 5000K, and 4000K are stored in association with the high, high-medium, medium, medium-low, and low buttons. In the gain display area 34, the current gain of each RGB color is displayed by expressing the amount of change from the initial value in an arbitrary unit.

  On the chromaticity diagram 32, a cursor 31 is displayed in an overlapping manner. The control processing unit 11 performs RGB so that the white chromaticity displayed by the display unit 15 becomes the chromaticity represented by the chromaticity coordinates corresponding to the position on the chromaticity diagram 32 where the cursor 31 is displayed. Processing to set the gain of each color is performed. The chromaticity coordinates such as xy or uv and the gain of each RGB color can be converted to each other using a predetermined conversion formula. However, the conversion coefficient included in the conversion formula varies depending on the characteristics of a display device such as a liquid crystal panel or a plasma panel included in the display unit 15. Therefore, the memory unit 12 stores conversion coefficients that are adjusted in advance according to the characteristics of the display unit 15, and the control processing unit 11 uses the conversion coefficients stored in the memory unit 12 to convert chromaticity coordinates and RGB colors. The gain controller 14 performs a process of setting the gain for amplifying the color signal to the gain converted from the chromaticity coordinates. The gain controller 14 amplifies the RGB color signals with the gain set by the control processor 11. For this reason, the display color displayed by the display unit 15 is a display color in which the white chromaticity becomes the chromaticity indicated by the cursor 31 on the chromaticity diagram 32.

  Next, the operation of the image display device of the present invention will be described. The image display apparatus has a function of executing a mode 1 in which gains are discretely changed and a mode 2 in which gains are continuously changed as a method of adjusting the gains of RGB colors. 3 and 4 are flowcharts showing a procedure of processing executed by the image display apparatus. The control processing unit 11 waits for reception of the display color adjustment instruction by the remote control receiving unit 13 when the user performs a predetermined operation on the remote control, such as when the user presses an adjustment button of the remote control (not shown). (S11). If no adjustment instruction has been received (S11: NO), the control processing unit 11 continues to wait for an adjustment instruction. When the adjustment instruction is received by the remote control receiving unit 13 (S11: YES), a color adjustment screen as shown in FIG. 2 is displayed on the display unit 15 (S12). Next, the control processing unit 11 uses a method for adjusting the gain of each RGB color by displaying a menu for selecting either mode 1 or mode 2 on the display unit 15 and receiving a mode designation. The system waits for reception of mode designation by performing a predetermined operation on the remote controller (S13). If no mode designation is accepted (S13: NO), the control processing unit 11 continues to wait for designation of mode designation. When the mode designation is received by the remote control receiving unit 13 (S13: YES), the control processing unit 11 determines whether or not the gain adjustment method designated by the accepted mode designation is mode 1 (S14). .

  When the designated gain adjustment method is mode 1 (S14: YES), the control processing unit 11 waits for reception of a selection instruction for selecting one color temperature from among a plurality of predetermined color temperatures. (S21). FIG. 5 is an explanatory diagram showing a color adjustment screen example in mode 1. One of the plurality of buttons indicating the predetermined color temperature displayed in the color temperature display area 33 in the color adjustment screen is highlighted. In the example in the figure, the high-middle button is selected. In step S21, for example, the user presses a cursor movement key provided on a remote controller (not shown), the remote controller transmits a signal according to the pressing of the cursor movement key, and the control processor 11 receives the remote controller receiver 13. According to the signal, the button highlighted in the color temperature display area 33 is switched, and a color temperature selection instruction associated with the highlighted button is received.

  When the selection instruction is received by the remote control receiving unit 13 in step S21 (S21: YES), the control processing unit 11 selects one color temperature according to the selection instruction (S22). Next, the control processing unit 11 reads the gain of each RGB color stored in the memory unit 12 in association with the selected color temperature (S23), and the gain control unit 14 reads the gain for amplifying the color signal. (S24). The gain control unit 14 amplifies the RGB color signals with the set gain, and as a result, the color temperature of the image displayed on the display unit 15 becomes the selected color temperature.

  Next, the control processing unit 11 calculates chromaticity coordinates from the set gain using the conversion coefficient stored in the memory unit 12 (S25). Next, the control processing unit 11 changes the display position of the cursor 31 in the chromaticity diagram 32 of the color adjustment screen displayed by the display unit 15 to a position corresponding to the calculated chromaticity coordinates, and the gain display area 34. The display of the gain inside is changed to a display showing the set gain (S26). In FIG. 5, a high-middle button, that is, a color temperature of 7000K is selected, and in the chromaticity diagram 32, the cursor 31 is displayed at the position of the chromaticity coordinates corresponding to the color temperature of 7000K. The cursors 312 and 313 when another color temperature is selected are indicated by broken lines in FIG. Since the color temperature associated with the button displayed in the color temperature display area 33 is a discrete value, the display position of the cursor 31 depends on which color temperature is selected as shown in FIG. It is changed discretely.

  After step S26 ends, the control processing unit 11 returns the process to step S21. When the selection instruction is not accepted in step S21 (S21: NO), the control processing unit 11 causes the user to perform a predetermined operation on the remote control, such as pressing the end button of the remote control (not shown). It waits for the remote control receiving unit 13 to accept a color adjustment end instruction (S27). If no termination instruction has been received (S27: NO), the control processing unit 11 returns the process to step S21. When the remote control receiving unit 13 receives an end instruction (S27: YES), the control processing unit 11 ends the process.

  If the gain adjustment method designated by the mode designation is mode 2 in step S14 (S14: NO), the control processing unit 11 sets the cursor shape in the color adjustment screen displayed on the display unit 15 to mode 1. The cursor shape is changed to a shape different from the cursor shape (S31). FIG. 6 is an explanatory diagram illustrating a color adjustment screen example in mode 2. The shape of the cursor 35 in the mode 2 is different from the shape of the cursor 31 in the mode 1, and is a cross cursor shape in which the tip of the arrow is directed vertically and horizontally. With such a shape, it is indicated that the cursor 35 is movable on the chromaticity diagram 32. Next, the control processing unit 11 waits for reception of a movement instruction for moving the cursor 35 on the chromaticity diagram 32 when the user performs a predetermined operation on the remote controller (S32). In step S32, for example, the user presses a cursor movement key provided on a remote controller (not shown), the remote controller transmits a signal according to the pressing of the cursor movement key, and the control processor 11 receives the remote controller receiver 13. In accordance with the received signal, a movement instruction in a direction corresponding to the cursor movement key pressed by the user is received.

  When the movement instruction is received in step S32 (S32: YES), the control processing unit 11 displays the position of the cursor 35 in the chromaticity diagram 32 of the color adjustment screen displayed by the display unit 15 according to the received movement instruction. Is moved (S33). For example, when a specific cursor movement key of the remote controller is pressed for a long time, the cursor 35 moves greatly in the direction corresponding to the pressed cursor movement key, and when the cursor movement key is pressed for a short time, the cursor 35 is moved. Move small. Next, the control processing unit 11 acquires chromaticity coordinates corresponding to the display position of the moved cursor 35 in the chromaticity diagram 32 (S34), and uses the conversion coefficient stored in the memory unit 12, The gain of each RGB color is calculated from the acquired chromaticity coordinates (S35). Next, the control processing unit 11 sets the gains of the respective RGB colors for which the gain control unit 14 amplifies the color signal to the calculated gains (S36). The gain control unit 14 amplifies the color signals of each RGB color with the set gain, and as a result, the display unit 15 has a display color in which the chromaticity of white becomes the chromaticity indicated by the cursor 35 on the chromaticity diagram 32. Display an image. Next, the control processing unit 11 changes the display of the gain in the gain display area 34 of the color adjustment screen displayed on the display unit 15 to a display indicating the set gain (S37). The cursor 35 as shown in FIG. 6 continuously moves on the chromaticity diagram 32 in accordance with a movement instruction from the user, and an image is displayed on the display unit 15 in a display color corresponding to the display position of the cursor 35.

  After step S37 ends, the control processing unit 11 returns the process to step S32. When the movement instruction is not accepted in step S32 (S32: NO), the control processing unit 11 waits for the remote control receiving unit 13 to accept the color adjustment end instruction (S38). If no termination instruction has been received (S38: NO), the control processing unit 11 returns the process to step S32. When the end instruction is received by the remote control receiving unit 13 (S38: YES), the control processing unit 11 ends the process.

  As described above, the image display apparatus according to the present invention displays the chromaticity diagram 32 in which the color sample of each color defined by the chromaticity coordinates is displayed at the position corresponding to the chromaticity coordinates, and follows the instruction from the user. The cursor is moved on the chromaticity diagram 32, and the display color of the display unit 15 is adjusted so that the displayed white color becomes the color defined by the chromaticity coordinates corresponding to the display position of the cursor. When the image display apparatus executes the above processing, the user moves the cursor on the chromaticity diagram 32 while visually recognizing the chromaticity diagram 32, and the white color changes to the color indicated by the cursor on the chromaticity diagram 32. The display color can be adjusted as follows. A color sample is shown on the chromaticity diagram 32, and the cursor moves on the chromaticity diagram 32 in accordance with the user's operation. Thus, it is visually determined how the white color changes in accordance with the user's operation. It is clearly shown and it becomes easy to understand intuitively how much the display color changes when the cursor is moved. Therefore, it is possible to intuitively easily adjust the display color displayed on the display unit 15 to a color desired by the user, and the convenience of the function of adjusting the display color in the image display device is improved.

  In mode 1 of the present invention, one of a plurality of predetermined color temperatures is selected, and the display color and the display position of the cursor 31 are changed according to the selected color temperature. The display position of the cursor 31 is changed discretely, which is convenient when the display color of the display unit 15 is changed greatly. In mode 2 of the present invention, the display position of the cursor 35 is continuously moved on the chromaticity diagram 32 in accordance with a movement instruction from the user, and the display color is adjusted in accordance with the display position of the cursor 35. The display color of the display unit 15 also changes continuously, which is convenient for fine adjustment of the display color. The image display device according to the present invention is used after selecting one of a plurality of predetermined color temperatures in mode 1 and changing the display color and the display position of the cursor 31 according to the selected color temperature. A process in which a person accepts a fine adjustment instruction by a predetermined operation such as pressing a cursor movement key of a remote controller, and finely adjusts the gain of each RGB color displayed in the gain display area 34 individually for each RGB according to the received instruction. You may go. Even when this processing is performed, the display position of the cursor 31 on the chromaticity diagram 31 is changed.

  In the present embodiment, the color temperature display area 33 including the button indicating the color temperature is displayed in the color adjustment screen. However, the image display apparatus of the present invention has predetermined RGB colors. Alternatively, a button indicating other parameters such as a set of gains may be displayed in the color adjustment screen. Further, in the present embodiment, the form in which the gain of each RGB color is stored in the memory unit 12 in association with the button displayed in the color adjustment screen and the gain is selected by selecting the button is shown. The image display apparatus may have a form in which other parameter values that can be converted into chromaticity coordinates, such as chromaticity coordinates themselves or color temperature, are stored in the memory unit 12 as parameter values associated with the buttons. . In addition, the image display device of the present invention may be configured such that parameter values set by the user, such as a color temperature desired by the user, are stored in the memory unit 12 as predetermined parameter values.

  In the present embodiment, the chromaticity coordinates are used as the color coordinates in the present invention and the chromaticity diagram is used as the color sample image. However, the image display device of the present invention is not limited to this. Other color coordinates and color sample images may be used. For example, the image display device may use a color space other than XYZ such as Lab or HSV as the color space and display a color sample image in which each color defined by the color coordinates in the used color space is distributed. Good.

It is a block diagram which shows the internal structure of the image display apparatus of this invention. It is explanatory drawing which shows the example of the screen for a color adjustment which the image display apparatus of this invention displays. It is a flowchart which shows the procedure of the process which an image display apparatus performs. It is a flowchart which shows the procedure of the process which an image display apparatus performs. 6 is an explanatory diagram illustrating an example of a color adjustment screen in mode 1. FIG. 6 is an explanatory diagram illustrating an example of a color adjustment screen in mode 2. FIG. It is a schematic diagram which shows the example of an adjustment screen for adjusting a display color.

Explanation of symbols

11 Control processing section 12 Memory section (storage means)
13 Remote control receiver (reception means)
14 Gain Control Unit 15 Display Unit 31 Cursor 32 Chromaticity Diagram (Color Sample Image)

Claims (4)

In an image display device that displays a color image,
Means for displaying a color sample image in which color samples defined by color coordinates in a predetermined color space are arranged at positions corresponding to the color coordinates;
Means for displaying a cursor on the color sample image;
Adjusting means for adjusting a display color so that white that can be displayed is a color defined by color coordinates corresponding to a position on the color sample image on which the cursor is displayed;
Receiving means for receiving an instruction for moving the cursor on the color sample image;
An image display apparatus comprising: moving means for moving the display position of the cursor on the color sample image in accordance with an instruction received by the receiving means. The accepting means is
Means for receiving a movement instruction for continuously moving the cursor on the color sample image;
The moving means is
The image display apparatus according to claim 1, further comprising a unit that continuously moves the display position of the cursor on the color sample image in accordance with a movement instruction received by the reception unit. Further comprising storage means for storing a plurality of parameter values in which parameter values that can be converted into color coordinates are predetermined;
The accepting means is
Means for accepting a selection instruction for selecting one parameter value from a plurality of parameter values stored in the storage means;
The moving means is
The means for moving the display position of the cursor to the position on the color sample image corresponding to the color coordinate obtained by converting the parameter value selected according to the selection instruction received by the receiving means. 2. The image display device according to 2. The color coordinates are chromaticity coordinates,
The color sample image is a chromaticity diagram;
The adjusting means is configured to adjust a display color in which the white chromaticity that can be displayed is a chromaticity represented by chromaticity coordinates corresponding to a position on a chromaticity diagram where the cursor is displayed. The image display device according to any one of claims 1 to 3, wherein

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