DISPLAY CONTROL DEVICE TO DISPLAY IMAGE DATA

• US 20100085370A1
• Filed: 09/29/2009
• Published: 04/08/2010
• Est. Priority Date: 03/29/2007
• Status: Active Grant

• Current Assignee: Cypress Semiconductor Corporation (Infineon Technologies AG)
• Original Assignee: Fujitsu Microelectronics Limited (Fujitsu Limited)
• Inventors: USUI, Minoru
• Granted Patent: US 9,463,692 B2
• Time in Patent Office: Days
• US Class Current: 345/564
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: G07C 5/12 in graphical form
• CPC Class Codes: G09G 2340/0464 Positioning
• CPC Class Codes: G09G 2340/0471 Vertical positioning
• CPC Class Codes: G09G 2340/0478 Horizontal positioning
• CPC Class Codes: G09G 2340/0485 Centering horizontally or vertically
• CPC Class Codes: G09G 3/3674 Details of drivers for scan electrodes
• CPC Class Codes: G09G 3/3685 Details of drivers for data electrodes
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: G09G 5/363 Graphics controllers
• CPC Class Codes: G09G 5/393 Arrangements for updating the contents of the bit-mapped memory
• CPC Class Codes: G09G 5/395 Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen G09G5/399 takes precedence
• CPC Class Codes: G09G 5/40 characterised by the way in which both a pattern determined by character code and another pattern are displayed simultaneously, or either pattern is displayed selectively, e.g. with character code memory and APA, i.e. all-points-addressable, memory

Abstract

In the display of an image including a fixed background image and a variation image of the background image, at least one of the amount of data to be held and the amount of work to be processed is reduced. A display control device acquires pixel description data including a combination of position information for specifying a position on a pixel array and address information for specifying an address in an image storage unit of image data which is displayed at the position specified by the position information. Furthermore, the display control device reads out the image data from the address of the image storage unit specified by the address information and specifies the position on the pixel array specified by the image description data to the display to input the read out image data.

Claims

1. A display control device to cooperate with an information processing device including an image storage unit and with a display device to display an image by setting image data for respective pixels of a pixel array, and to cause said display device to display the image data read from said image storage unit of said information processing device, said display control device comprising:

a pixel description data acquiring unit to acquire pixel description data containing a combination of position information specifying a position on the pixel array and address information specifying an address, on said image storage unit, of the image data that is displayed in the specified position;

an image reading unit to read the image data from the address, on said image storage unit, specified by the address information; and

a control unit to input the readout image data specified by the pixel description data to said display device with the position on the pixel array specified.

2. A display control device according to claim 1, further comprising a specifying information acquiring unit to acquire specifying information for specifying the pixel description data that is acquired by said pixel description data acquiring unit in plural pieces of pixel description data.

3. A display control device according to claim 1, wherein the pixel description data further contains data length information for specifying a data quantity of the image data, and

said image reading unit reads the image data having the data quantity specified by the data length information.

4. An information processing device including a display control device and a processing device,

said display control device comprising:

an image storage unit stored with image data;

an interface connectable to a display device to display an image by setting the image data into respective pixels of a pixel array;

a pixel description data acquiring unit to acquire pixel description data containing a combination of position information specifying a position on the pixel array and address information specifying an address, on said image storage unit, of the image data that is displayed in the specified position;

an image reading unit to read the image data from the address, on said image storage unit, specified by the address information; and

a control unit to input the readout image data specified by the pixel description data to said display device with the position on the pixel array specified,

said processing device comprising;

a generating unit to generate the pixel description data; and

a command unit to give a command to said display control device to start up processes with the generated pixel description data.

5. An information processing device according to claim 4, further comprising a timer to start up said display control device at an interval of a predetermined period of time.

6. An information processing device according to claim 4, wherein said image storage unit includes a first image storage unit stored with a background image and a second image storage unit stored with an image of a dynamic area against the background image, and

said image reading unit reads, as specified by the address information, the image data from said first image storage unit or said second image storage unit.

7. A storage medium storing a display control program to control a display device to receive an input of image data and to display an image of the image data, the program including instructions that, when executed by a computer, cause the computer to perform:

acquiring pixel description data containing a combination of position information specifying a position on a pixel array and address information specifying an address, on an image storage unit, of the image data that is displayed in the specified position;

reading the image data from the address, on said image storage unit, specified by the address information; and

inputting the image data specified by the pixel description data to said display device with the position on the pixel array specified.