JP2005024918A - Display control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a display control device which displays desired information through a quick and accurate operation without burdening the user when a plularity of information of different functions are displayed on the same screen by using a display means having a touch panel. <P>SOLUTION: A control part 4, when a LOW CONT icon is touched on a displayed navigation screen, gives an image control signal that displays an equipment control screen in place of the navigation image, to an image processing/plotting circuit 3. The control part 4, when a present place icon is touched on the displayed equipment control screen, gives an image control signal that displays the navigation image in place of the equipment control image, to the image processing/plotting circuit 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display control device, and more particularly to a display control device that controls the content of an image displayed on a display device.
[0002]
[Prior art]
A display device with a touch panel is used to configure an operation unit that controls all operations necessary for multifunctional home appliances such as VTRs using a limited-size operation panel and minimum switch keys. An operating device has been proposed. According to a conventional proposal, the operation display unit includes a display unit that displays a symbol of the operation switch, a display control unit for displaying the symbol, a transparent touch keyboard installed on the display, and a pressed key on the keyboard. Means for detecting and outputting the position data of the device, mode control means for outputting the function and operation mode data by detecting the operation state of the device, and means for converting the position data of the press key into the control signal of the device (For example, refer patent document 1).
In addition, the liquid crystal display module contrast control enables the display contrast of the liquid crystal display module to be adjusted by fixing the power supply voltage output from the power supply circuit and controlling the effective voltage applied to the liquid crystal cell using only digital data. Methods and liquid crystal display devices have been proposed. According to this proposal, when a signal for turning off the display of a liquid crystal display module composed of a plurality of liquid crystal cells is used as a display off signal, image display is performed during the period of application of the scanning signal to each scanning electrode of the liquid crystal display module. The contrast of the liquid crystal display module is controlled by inserting the display off signal in a time shorter than the selection period of the liquid crystal cell in accordance with the contrast (see, for example, Patent Document 2).
[0003]
[Patent Document 1]
JP-A-3-189812 (page 2, upper right column, lines 7 to 16)
[Patent Document 2]
JP 11-337912 A (paragraph number “0010”)
[0004]
[Problems to be solved by the invention]
In general, when displaying information of different functions on the same screen using a display device having a touch panel, a method for displaying a menu screen for selecting information and allowing the user to select one of the information is displayed. There is a way to display at the same time. The method of displaying the information selection menu screen requires time and effort to display desired information. On the other hand, the method of displaying information of different functions at the same time may cause an erroneous operation because the area for displaying each piece of information becomes small. In the situation where the user views and operates the screen while performing other work, both methods are burdensome to the user. In particular, when the screen display itself interferes with the concentration of work, it is necessary to turn off the display device and erase the display. First, an operation to turn on the power of the display device has to be performed, which further burdens the user.
For example, in an in-vehicle navigation device using a display means having a touch panel, not only displays map information of driving guidance, but also displays icons for controlling audio equipment and air conditioner equipment in the vehicle, Some devices control these devices simply by touching the touch panel. In such a device, the screen display is erased when driving guidance is not required, so when controlling an audio device or air conditioner device, the screen erase is canceled and the device control menu is displayed. It was necessary to select the menu of the device to be controlled and display the icon of the device on the screen. For this reason, there is a problem that it takes time to control the audio device and the air-conditioning device, which hinders driving of the vehicle. On the other hand, in the state where icons are always displayed to control audio equipment and air conditioner equipment without erasing the screen, there is a problem that the night driving is hindered.
However, the above-described conventional operation device proposal, liquid crystal display module contrast control method, and liquid crystal display device proposal cannot solve such problems.
[0005]
The present invention has been made to solve the above-described problems. When displaying information on different functions on the same screen using a display device having a touch panel, the present invention can be performed quickly and accurately without burdening the user. An object of the present invention is to obtain a display control device capable of displaying desired information by simple operation.
[0006]
[Means for Solving the Problems]
The display control apparatus according to the present invention performs image processing on either the first image having a predetermined contrast or the second image having a lower contrast than the first image and outputs the processed image to a display unit having a touch panel. When the image processing means and the display switching icon in the first image displayed on the display means are touched, an image control signal for outputting the second image to the display means instead of the first image is displayed. When the display switching icon in the second image displayed on the display means is touched, an image control signal for outputting the first image to the display means is given to the image processing means instead of the second image. And a control signal generating means.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the configuration of an embodiment of the display control apparatus of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a display device in an in-vehicle navigation device to which the display control device of the present invention is applied. In FIG. 1, an LCD (liquid crystal display device) module 1 (display means) displays an input image with a contrast corresponding to the brightness of a backlight (not shown). The touch panel unit 2 is provided on the display surface of the LCD module 1 and generates a position detection signal by detecting contact of a finger or the like at an arbitrary position on the display surface. The video processing / drawing circuit unit 3 (image processing means) processes an image output to the LCD module 1. The control unit 4 (control signal generating means) processes the position detection signal from the touch panel unit 2 to give an image control signal to the video processing / drawing circuit unit 3 and to control the luminance of the backlight of the LCD module 1. A luminance control signal to be controlled is generated. The inverter circuit unit 5 applies a voltage corresponding to the luminance control signal from the control unit 4 to the backlight of the LCD module 1.
[0008]
Next, the operation will be described.
FIG. 2 is a flowchart showing the operation of the display device of FIG. When the display device is activated, the navigation screen is first displayed with normal contrast (step ST1). FIG. 3 shows a display example of the navigation screen in the LCD module 1. As shown in FIG. 3, the navigation screen includes a plurality of types of icon images 12 in addition to the map information image 11. The plural types of icons include a navigation icon, a TV (television) icon, an AUDIO icon, an air conditioner icon, an information icon, and a LOW CONT icon 13 (display switching icon) for low contrast instruction.
[0009]
After the navigation screen is displayed, it is determined whether or not the LOW CONT icon 13 has been pressed (step ST2). When this icon is pressed, a low-contrast device control image is displayed on the screen, and the backlight brightness is set to a predetermined value (step ST3). FIG. 4 is a diagram showing a screen of a low contrast device control image transitioned from the navigation screen. On this screen, a plurality of operation icons (channel selection icon, volume icon, FM broadcast selection icon, CD selection icon) 14 for controlling the audio device, and operation icons (wind direction icon, air volume icon) for controlling the air conditioner device are displayed. , A temperature setting icon, a DEF icon, a ventilation icon) 15 and a current location icon 16 (display switching icon) which is a display switching operation icon.
[0010]
Note that the display switching operation icon is a TV icon on the low contrast device control image screen transitioned from the television broadcast screen, and the display switching operation is performed on the low contrast device control image screen transitioned from the audio screen. The operation icon is an AUDIO icon, and the display switching operation icon is an information icon on the screen of the low-contrast device control image transitioned from the information screen.
[0011]
In the screen of FIG. 4, it is determined whether or not an operation icon has been pressed (step ST4). If any of the operation icons has been pressed, it is determined whether or not the icon is the current location icon 16 (step ST4). ST5). If the current location icon 16 is pressed, the process proceeds to step ST1 to display the normal contrast navigation screen shown in FIG. On the other hand, when the pressed operation icon is one of the operation icons for controlling the audio device or the air conditioner device, a predetermined process corresponding to the operation icon is performed (step ST6). After the predetermined processing, the process proceeds to step ST4, and it is determined whether or not the operation icon is pressed.
[0012]
As described above, according to the first embodiment, the video processing / drawing circuit unit 3 controls a navigation image having a predetermined contrast or an audio device and an air conditioner device having a contrast lower than that of the navigation image. One of the device control images for image processing is subjected to image processing in accordance with the image control signal and output to the LCD module 1. When the LOW CONT icon 13 in the navigation image displayed on the LCD module 1 is touched, the control unit 4 performs video processing / drawing of an image control signal for outputting a device control image to the LCD module 1 instead of the navigation image. When the current location icon 16 in the device control image displayed on the LCD module 1 is applied to the circuit unit 3, an image control signal for outputting a navigation image to the LCD module 1 instead of the device control image is processed by video processing / Since it is given to the drawing circuit unit 3, when displaying information of different functions on the same screen using the LCD module 1 having the touch panel unit 2, desired information can be obtained quickly and accurately without burdening the user. The effect that it can display is acquired.
[0013]
【The invention's effect】
As described above, according to the present invention, the display control device performs image processing on either the first image having a predetermined contrast or the second image having a lower contrast than the first image to perform a touch panel. When the image processing means that outputs to the display means and the display switching icon in the first image displayed on the display means are touched, the second image is output to the display means instead of the first image. Image control that gives an image control signal to the image processing means and outputs the first image to the display means instead of the second image when the display switching icon in the second image displayed on the display means is touched Since the control signal generating means for supplying the signal to the image processing means is provided, when displaying information of different functions on the same screen using the display means having a touch panel, Without applying responsible, there is an effect that it displays the desired information by fast and accurate operation.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a display device in an in-vehicle navigation device to which a display control device according to Embodiment 1 of the present invention is applied.
FIG. 2 is a flowchart showing the operation of the display device of FIG.
3 is a diagram showing a display example of a navigation screen in the LCD module of FIG. 1. FIG.
FIG. 4 is a diagram showing a screen of a low-contrast device control image transitioned from a navigation screen.
[Explanation of symbols]
1 LCD module (display means), 2 touch panel section, 3 video processing / drawing circuit section (image processing means), 4 control section, 5 inverter circuit section.

Claims (4)

Image processing means for performing image processing on either a first image having a predetermined contrast or a second image having a lower contrast than the first image and outputting the processed image to a display means having a touch panel;
When the display switching icon in the first image displayed on the display means is touched, an image control signal for outputting the second image to the display means instead of the first image is processed in the image processing. And an image control signal for outputting the first image to the display means instead of the second image when the display switching icon in the second image displayed on the display means is touched. And a control signal generating means for supplying the image processing means to the display control device. The image processing means performs image processing on either the first image including the video information and the display switching icon or the second image including the icon for controlling a predetermined device and the display switching icon, and outputs the processed image to the display means. The display control apparatus according to claim 1. The image processing means includes a first image composed of navigation video information for vehicle travel guidance and a display switching icon for low contrast instructions, or an icon for controlling audio equipment and air conditioner equipment in the vehicle and a display switching icon for normal contrast instructions. The display control apparatus according to claim 1, wherein any one of the two images is subjected to image processing and output to a display unit. The image processing means includes a first image composed of television image information and a low contrast instruction display switching icon, or a second image composed of an icon for controlling an audio device and an air conditioner in the vehicle and a normal contrast instruction display switching icon. The display control apparatus according to claim 1, wherein any one of the above is subjected to image processing and output to the display means.

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