JP4342152B2 - Color display device, method and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a color display device, a method for displaying a plurality of colors by changing the luminance of each emission color in a light emitting element capable of emitting a plurality of colors of light (for example, three color LEDs of R, G, B) Concerning program improvement.
[0002]
[Prior art]
2. Description of the Related Art In recent years, electronic technologies such as light emitting elements and their control have been improved year by year. A color display device that causes an operation panel of a car audio system, for example, to shine in different colors according to its operation mode by combining LEDs of various colors However, various devices have been proposed.
[0003]
As a specific example of a color display device, for example, in backlight illumination of an operation panel provided with a display unit, LEDs of three colors R, G, and B are driven to a desired brightness by PWM (pulse width modulation) driving by a display microcomputer. It has been proposed to realize a desired color tone and its change by controlling the color tone. Here, in the PWM drive, as shown in the conceptual diagram of FIG. 7, for a light emitter that can only control whether it emits light or emits light at a constant luminance, per unit time cycle (for example, about several milliseconds to several tens of milliseconds). By controlling the light emission time, a desired intermediate brightness is realized by the afterimage phenomenon of the eyes.
[0004]
As a function of this type of color display device, in addition to the illumination by the R, G, B brightness values of each color prepared in advance, R, G, There is a method in which a user's original color is created by adding a color adjustment (brightness adjustment) to adjust B appropriately, and this is stored and illuminated by illumination. The operation mode for performing color adjustment at this time is temporarily referred to as a “user color selection mode”.
[0005]
R, G, and B in this user color selection mode are usually handled with a width larger than the minimum increase / decrease width of the brightness that can be adjusted on the actual circuit, and such a large width in handling is “step”. be called.
[0006]
For example, even if the RGB luminance values can be set in a total of 128 steps from 0 to 127 on the actual circuit, the luminance value 0 is 0 steps and the luminance values 1 to 16 are 1 steps. The luminance value 17 to 32 is incremented by 2 steps, and the luminance value is incremented by 16 for one step, and the last luminance value 113 to 127 is incremented by 15 increments. Therefore, as shown in FIG. 4, the luminance values of RGB 0 to 127 can be expressed in a total of 9 stages with 0 to 8 steps.
[0007]
If the user performs 128-level adjustment for each RGB color, there is a problem that the number of key operations and the combination of RGB explosively increase and the processing becomes complicated. By using such steps, the luminance of each RGB color is increased. Can be selected from 9 stages, so the above-mentioned problem of complication can be avoided.
[0008]
Conventionally, the RGB luminance values of the respective colors prepared in advance are also held as initial values of step values corresponding to this one step, for example, 0, 16, 32,... 96, 112, 127. A set of R, G, and B luminance values is referred to as luminance data.
[0009]
For example, in such a prior art, a certain color “Mode Orange” is defined by luminance data such as R: 127, G: 32, and B: 0, and these RGB numbers are R: step number 8 , G: number of steps 2; B: number of steps corresponding to steps such as 0 steps are selected (FIG. 8A).
[0010]
In this case, FIG. 8 shows an example of performing RGB G luminance adjustment in the user color selection mode based on this color. In this case, when the number of steps 2 is increased by one step from the initial value state (FIG. 8A), the number of steps becomes 3 and the luminance value 48 is obtained (FIG. 8B). When one step is further increased, the number of steps becomes 4, and the luminance value becomes 64 (FIG. 8C). On the contrary, when one step is lowered, the number of steps becomes 3, and the luminance value becomes 48 (FIG. 8D). When the number of steps is further reduced by 1, the initial value of step number 2 is restored (FIG. 8E), and the luminance value becomes 32 of the initial value.
[0011]
The same applies to R and B. If the number of steps is changed back to the initial number of steps, the luminance value can be returned to the same state as the initial value. Therefore, if the RGB values of “Mode Orange” are changed and returned to their initial values, “Mode Orange” can be expressed again in the user color selection mode.
[0012]
[Problems to be solved by the invention]
However, in the prior art as described above, since the setting of each color prepared in advance is a combination of step values corresponding to the steps as described above, the luminance data is previously stored by an intermediate fraction that is out of the step. Could not set. For this reason, the color tone and brightness of a color prepared in advance are limited, and there is a problem that it is difficult to express subtle nuances.
[0013]
The present invention has been proposed to solve the above-described problems of the prior art, and an object of the present invention is to provide a color display device, method and program with an increased degree of freedom in color expression. Another object of the present invention is to consider the case where fractional values are included in RGB of the color prepared in advance, and increase the degree of freedom of expression of the color prepared in advance, and the luminance value to be changed based on it. It is to provide a color display device, method, and program for increasing the degree of freedom of user colors by matching only the brightness value in increments and using the others for user colors as they are.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, a first aspect of the invention provides a color display device that emits colors by combining a plurality of emission colors, and stores in advance a luminance value of each emission color corresponding to each basic color prepared in advance. The first storage means, the second storage means for storing in advance the relationship between each brightness value corresponding to each step for dividing the brightness value, and the desired brightness value among the brightness values corresponding to the selected basic color If the brightness value related to the change does not match any of the brightness values stored in the second storage means, the brightness value is stored in the second storage means when the brightness value is changed. A luminance value changing unit that matches any luminance value; and a unit that sets an arbitrary display color based on a luminance value that has been changed or not changed based on a basic color. To do.
[0015]
According to a third aspect of the present invention, the invention of the first aspect is grasped from the viewpoint of a method. In a color display method for emitting a color by a combination of a plurality of light emission colors, each light emission corresponding to each basic color prepared in advance. The brightness value of the color is stored in advance in the first storage means, and the relationship between each step for classifying the brightness value and each corresponding brightness value is stored in advance in the second storage means, and the selected base When a desired brightness value corresponding to a color is changed and the brightness value related to the change does not match any brightness value stored in the second storage means, the brightness value is changed A process for matching any one of the brightness values stored in the second storage means, a process for setting an arbitrary display color based on the brightness value changed or not changed based on the basic color, and It is characterized by including.
[0016]
According to a fifth aspect of the present invention, the invention of the first and third aspects is grasped from the viewpoint of a computer program. In a color display program for controlling a computer to emit light by a combination of a plurality of light emission colors, the program is provided. In the computer, the luminance value of each emission color corresponding to each basic color prepared in advance is stored in the first storage means in advance, and the relationship between each step of classifying the luminance value and each corresponding luminance value Is stored in advance in the second storage means, the desired one of the brightness values corresponding to the selected basic color is changed, and the brightness value relating to the change is stored in the second storage means. If none of the brightness values match, the brightness value is matched with one of the brightness values stored in the second storage means, and the brightness value is changed based on the basic color. Characterized in that to set the arbitrary display colors based on the changes that were not luminance value.
[0017]
In these aspects, it is not limited to the increment of the brightness value corresponding to each step, and by defining each brightness value of the basic color using an intermediate fraction freely, it is possible to set subtle and diverse basic illumination colors Become. In addition, if you leave such intermediate brightness values as they are and change the brightness values of the other colors, you can adjust and set the subtle lighting colors that match the user's preferences even in the user-set colors Freedom. In addition, the change of the brightness value is not made in units of minimum units, but the changed fractional value matches the brightness value of the step corresponding to the step and the increase / decrease is a unit of increments, so the display color is diversified and the operation and processing are complicated There is no inconvenience.
[0018]
According to a second aspect of the present invention, in the color display device according to the first aspect, the light emitting element is controlled to a luminance based on each luminance value by pulse width modulation driving.
[0019]
According to a fourth aspect of the present invention, the invention of the second aspect is grasped from the viewpoint of a method, and in the color display method according to the third aspect, the light emitting element is controlled to a luminance based on each luminance value by pulse width modulation driving. It is characterized by doing.
[0020]
According to a sixth aspect of the present invention, the invention according to the second or fourth aspect is grasped from the viewpoint of a computer program. In the color display program according to the fifth aspect, the program causes the computer to emit light emitting elements by pulse width modulation driving. The brightness is controlled based on each brightness value.
[0021]
In these aspects, a PWM drive for a light emitting element such as an LED provides a simple and inexpensive color display device which does not require multi-step voltage control and has excellent reliability and durability.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention (hereinafter referred to as “embodiments”) will be specifically described with reference to the accompanying drawings. Note that this embodiment can be realized by controlling a computer with a program. However, in this case, since the hardware and the implementation mode of the program can be variously changed, in the following description, each of the present invention and the present embodiment will be described. A virtual circuit block that realizes the function is used.
[0023]
[1. Constitution〕
The present embodiment is a car audio device (hereinafter referred to as “this device”) that includes a color display device that emits colors by a combination of a plurality of emission colors, and the color display is, for example, backlight illumination of an operation panel of this device Applies to The present embodiment also provides a color display method (hereinafter referred to as “the present method”) executed on the apparatus, a program for realizing the apparatus and the method, and a machine-readable recording medium on which such a program is recorded. Can also be grasped.
[0024]
First, the functional block diagram of FIG. 1 is a functional block diagram schematically showing the entire apparatus. This apparatus includes the following components shown in this figure. First, reference numeral 21 denotes a display device having LEDs of three colors R (red), G (green), and B (blue) as light emitters. These LEDs are based on RGB luminance values included in luminance data. The actual color display is performed by adjusting the brightness.
[0025]
Reference numeral 23 denotes a MAIN microcomputer for controlling the entire car audio apparatus. Reference numeral 25 denotes an operation key, and the display microcomputer 22 is a part for controlling the display 21 in order to take in data indicating which key is pressed from the operation key 25 and to perform display according to the pressed key. It is. The CD / MD mechanism 24 reproduces a CD or MD, and includes mechanisms such as a spindle motor, a disk chucking and loading mechanism, an optical pickup and its feeding mechanism.
[0026]
The function of the display microcomputer 22 can be grasped by dividing it into the following virtual circuit blocks shown in FIG. The preset memory 221 is a first storage unit that stores the luminance value of each emission color corresponding to each basic color prepared in advance. The step memory 222 is a second storage unit that stores in advance the relationship between each step of dividing the luminance value and each corresponding luminance value (hereinafter referred to as “step value”).
[0027]
The luminance value changing unit 223 changes the desired luminance value among the luminance values corresponding to the selected basic color in accordance with the key operation input from the operation key 25, and the luminance value related to the change is stored in the step memory 222. In the case where it does not match any of the step values stored in, the brightness value changing means for matching with any of the step values stored in the step memory 222 when the brightness value is changed. Such a change in luminance value is referred to as “luminance adjustment”.
[0028]
The user color setting unit 224 is a means for setting an arbitrary display color in the user color memory 225 as the user color “USER COLOR” based on the luminance value changed or not changed based on the basic color.
[0029]
The display microcomputer 22 is provided with a circuit for controlling each LED, which is a light emitting element, to a luminance based on each luminance value by pulse width modulation driving, but this circuit may be provided in the display 21.
[0030]
[2. Action)
The present embodiment configured as described above operates as follows.
[2-1. (Preset color mode transition)
Each basic color stored in the preset memory 221 and the user color “USER COLOR” set in the user color memory 225 are called “preset colors”. In this embodiment, these preset colors are displayed cyclically as shown in FIG. 2 by key operation. Specifically, every time a predetermined key is operated, the color changes from “COLOR SCAN” (described later) to “USER COLOR”. When the key is further pressed in “USER COLOR”, the display returns to “COLOR SCAN”.
[0031]
In addition, by performing another predetermined key operation on the preset color shown in the figure, it is possible to enter the user color selection mode. In this mode, the preset color RGB displayed immediately before is used as an initial value. , RGB brightness adjustment is performed.
[0032]
More specifically, as shown in FIG. 2, “COLOR SCAN” is a predetermined display such as blinking. When “COLOR SCAN” is entered and the user color selection mode is entered, “Indigo Blue” to “Lux Violet” are entered. The preset color is displayed for a certain period of time repeatedly until “LuxViolet” is returned to “Indigo Blue”, and the display operation is repeated for a certain period of time. .
[0033]
If the user color selection mode is entered during display from “Indigo Blue” to “COLOR OFF”, RGB brightness adjustment can be performed using RGB of the preset color as an initial value.
[0034]
When the user color selection mode is entered during “USER COLOR”, the initial value of “USER COLOR” at that time becomes the initial value of the color to be adjusted. This “USER COLOR” is obtained by storing other basic colors in the user color memory 225 as they are or after adjusting the luminance.
[0035]
[2-2. (Schematic example of brightness adjustment)
At the time of brightness adjustment, the brightness value changing unit 223 changes a desired brightness value corresponding to the selected basic color in accordance with a key operation input from the operation key 25, and the brightness related to the change. If the value does not match any of the step values stored in the step memory 222, the value is made to match any of the step values stored in the step memory 222 when the luminance value is changed.
[0036]
Here, RGB data of each basic color shown in FIG. 3 is stored in the preset memory 221 in advance, and the step memory 222 has the number of steps (0 to 8) as shown in FIG. It is assumed that the brightness values (0, 16,... 96, 112, 127) of the corresponding steps are stored. Among these, 5,14,15,25,28,36,72,78,107,108,110 in the respective luminance values constituting the luminance data of FIG. 3 are all intermediate luminances that do not coincide with the step values of FIG. Value (hereinafter referred to as “fractional value”).
[0037]
According to the present embodiment, such intermediate fractional values, for example, R: 14, G: 36 in “Surf Blue”, G: 5, B: 78 in “Aroma Pin”, and G: 15 in “Lux Violet” are used. It is possible to set a subtle basic illumination color that is not limited to the step value for each step.
[0038]
In addition, when adjusting brightness, leaving the intermediate brightness value as above and changing the brightness value of the other colors, it is possible to set subtle illumination colors even in user settings. The effect of becoming.
[0039]
For example, consider a case where color adjustment is performed in the user color selection mode as shown in FIG. 5 based on RGB of the basic color “Lux Violet” in FIG. In this case, the RGB of “Lux Violet” has an R luminance value of 96, a G luminance value of 15, and a B luminance value of 127. At this time, since the luminance value 15 of G does not match the step value, if expressed by the number of steps in the initial value state of FIG. 5A, the step number 1 corresponding to 16 which is the first step value larger than that is Become. However, since the luminance value G (green) is not changed at this time, the original luminance value G: 15 is stored.
[0040]
After that, if the number of steps of G is changed even once, the fractional value is matched with the most recent step value, that is, rounded. When one step is increased (FIG. 5B), step 2 is obtained, and the luminance value becomes 32 corresponding to the increment value. When the level is further increased by one step (FIG. 5C), the luminance value becomes 48, which is a step value corresponding to step 3. On the other hand, when 2 steps are lowered and the number of steps is returned to 1 (FIG. 5E), the luminance value becomes 16 which is a step value different from the initial 15. As a result, G: 15 of “Lux Violet”, which was the initial value, is rounded to a predetermined step value 16.
[0041]
In other words, when “Lux Violet” is taken as an example, the fractional value “G: 15” is used as it is without being changed, and only the luminance values of R and B are changed. An illumination color that cannot be set can be set.
[0042]
That is, in this embodiment, when the luminance value of a certain color included in the luminance data serving as the base (the initial RGB values shown in FIG. 3) is a fractional value, when the number of steps is changed once, Even when the number of steps is returned to the original initial value, the luminance value does not return to the original initial value, but is rounded to a predetermined luminance value for each step. In other words, as shown in the example of FIG. 5, if the number of steps of G, which is not a step value, is changed once in RGB, the luminance value is not set to the original 15 but rounded to 16, even when the original number of steps is returned to 1. Is included.
[0043]
Therefore, if it is desired to use the RGB fractional value of “Lux Violet” again, the user color selection mode may be entered again based on “Lux Violet”.
[0044]
After the necessary brightness adjustment as described above, when the user color selection mode is terminated by a predetermined key operation, the user color setting unit 224 changes the brightness value after the change based on the basic colors RGB. For those that have not been changed, the original luminance value is set in the user color memory 225 with the arbitrary display color as the user color “USER COLOR”.
[0045]
[2-3. Specific processing procedure)
A specific processing procedure of the brightness adjustment as described above is shown in a flowchart of FIG. Here, let us consider the RGB luminance adjustment of “Lux Violet” (hereinafter referred to as “Violet”) shown in FIG. In this case, as shown in FIG. 6, the user color selection mode is entered with RGB of “Violet” as an initial value by a long press operation of the COLOR key.
[0046]
Then, when the initial value of RGB of “Violet” is not changed (STEP 11) and the initial value of RGB of “Violet” is stored as “USER COLOR” as it is (STEP 19), for example, a long press operation of the ENTER key Is performed, memory processing and "USER COLOR" display are performed (STEP 18), and the user color selection mode is exited.
[0047]
If the initial RGB values of “Violet” are not changed (STEP 11) and are not saved (STEP 19), the same “Violet” as when the user color selection mode is entered exits the user color selection mode. As the time display (STEP 20), the user color selection mode is exited.
[0048]
On the other hand, when changing the RGB of “Violet” (STEP 11), one of the RGB is selected as a change target by operating the “<” / “>” (left and right direction keys) keys (STEP 12). Here, for example, the G value 15 of “Violet” is changed.
[0049]
Then, the step is increased or decreased for the selected color (STEP 13). Here, a case where the number of steps is increased is considered. That is, when the step number 2 is added by the “に よ り” (upward) key (STEP 14), the luminance value of G becomes 32 as a result.
[0050]
Then, it is determined whether or not the number of RGB steps is to be changed (STEP 16). If it is to be changed, the process returns to STEP 12. At this time, G is further selected and the process proceeds to STEP 13. Next, when it is selected to subtract the number of steps (STEP 13), for example, the step number is subtracted by 1 using the “∨” (downward) key (STEP 15), resulting in a step number of 1, and the luminance value at this time Is 16.
[0051]
Then, it is determined whether or not the number of RGB steps is to be changed (STEP 16). If not changed, it is determined whether or not to perform memory processing (STEP 17). If no memory processing is performed here, the RGB value is set. Returning to “Violet” and exiting the mode (STEP 20), when performing memory processing (STEP 17), for example, a long press operation of the ENTER key is performed. Thus, the memory processing for storing “USER COLOR” in the user color memory 225 based on the content of the brightness adjustment at that time, and the display of the “USER COLOR” are performed (STEP 18), and the user color selection mode is exited.
[0052]
[3. effect〕
As described above, the present embodiment is not limited to the increment of the luminance value corresponding to each step, but by defining each luminance value of the basic color using an intermediate fraction freely, subtle and diverse basic illumination The color can be set. In addition, if you leave such intermediate brightness values as they are and change the brightness values of the other colors, you can adjust and set the subtle lighting colors that match the user's preferences even in the user-set colors Freedom. Moreover, the change of the brightness value is not done in units of minimum units, but the changed fractional value is matched with the brightness value of the step corresponding to the step and the increase / decrease is a unit of increment, so the display color is diversified and the operation and processing are complicated There is no inconvenience.
[0053]
In particular, according to the present embodiment, a simple and inexpensive color display device that does not require multi-step voltage control and has excellent reliability and durability is provided by PWM driving of a light emitting element such as an LED.
[0054]
[4. Other embodiments]
In addition, this invention is not limited to said each embodiment, Other embodiments which are illustrated below are included. For example, LED or PWM drive is not essential, and the present invention can be applied to any light emitter such as electroluminescence, and to other drive systems.
[0055]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a color display device, method, and program with an increased degree of freedom in color expression.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing a configuration of an embodiment of the present invention.
FIG. 2 is a conceptual diagram showing a display order of preset colors in the embodiment of the present invention.
FIG. 3 is a view showing the contents of a preset memory in the embodiment of the present invention.
FIG. 4 is a view showing the contents of a step memory in an embodiment of the present invention.
FIG. 5 is a conceptual diagram showing an example of luminance adjustment in the embodiment of the present invention.
FIG. 6 is a flowchart showing a procedure of luminance adjustment in the embodiment of the present invention.
FIG. 7 is a conceptual diagram showing PWM (pulse width modulation) driving.
FIG. 8 is a conceptual diagram illustrating an example of luminance adjustment.
[Explanation of symbols]
21 ... Display 22 ... Display microcomputer 23 ... MAIN microcomputer 24 ... CD / MD mechanism 25 ... Operation key 221 ... Preset memory 222 ... Increment memory 223 ... Luminance value changing unit 224 ... User color setting unit 225 ... User color memory STEP ... Procedure Each step

Claims (6)

In a color display device that emits a color by combining a plurality of emission colors,
First storage means for storing in advance the luminance value of each emission color corresponding to each basic color prepared in advance;
A second storage means for storing in advance the relationship between each step for classifying the brightness value and each corresponding brightness value;
When the desired brightness value corresponding to the selected basic color is changed and the brightness value related to the change does not match any brightness value stored in the second storage means, the brightness value Brightness value changing means for matching with any one of the brightness values stored in the second storage means when changing
Means for setting an arbitrary display color based on a luminance value changed or not changed based on a basic color;
A color display device comprising: The color display device according to claim 1, wherein the light emitting element is controlled to have a luminance based on each luminance value by pulse width modulation driving. In a color display method for emitting a color by combining a plurality of emission colors,
The brightness value of each emission color corresponding to each basic color prepared in advance is stored in advance in the first storage means,
The relationship between each luminance value corresponding to each step of dividing the luminance value is stored in advance in the second storage means,
When the desired brightness value corresponding to the selected basic color is changed and the brightness value related to the change does not match any brightness value stored in the second storage means, the brightness value A process of matching any one of the brightness values stored in the second storage means when
A process for setting an arbitrary display color based on a luminance value that has been changed or not changed based on the basic color;
A color display method comprising: 4. The color display method according to claim 3, wherein the light-emitting element is controlled to have a luminance based on each luminance value by pulse width modulation driving. In a color display program for emitting a color by combining a plurality of emission colors by controlling a computer,
The program is stored in the computer,
The brightness value of each emission color corresponding to each basic color prepared in advance is stored in advance in the first storage means,
The relationship between each luminance value and the corresponding luminance value is stored in advance in the second storage means,
When the desired brightness value corresponding to the selected basic color is changed and the brightness value related to the change does not match any brightness value stored in the second storage means, the brightness value To match any one of the brightness values stored in the second storage means when
A color display program for setting an arbitrary display color based on a luminance value which is changed or not changed based on a basic color. The color display program according to claim 5, wherein the program causes the computer to control the light emitting element to a luminance based on each luminance value by pulse width modulation driving.

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