Display driving system

• US 20040222959A1
• Filed: 08/04/2003
• Published: 11/11/2004
• Est. Priority Date: 05/08/2003
• Status: Abandoned Application

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Lin, Chang-Cheng, Hsu, Cheng-Chih
• Application Number:
  US10/632,917
• Publication Number:
  US 20040222959A1
• Time in Patent Office: Days
• US Class Current: 345/98
• CPC Class Codes: G09G 2310/04 Partial updating of the display screen
• CPC Class Codes: G09G 2360/126 The frame memory having additional data ports, not inclusive of standard details of the output serial port of a VRAM
• CPC Class Codes: G09G 2360/18 Use of a frame buffer in a display terminal, inclusive of the display panel
• 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 5/399 using two or more bit-mapped memories, the operations of which are switched in time, e.g. ping-pong buffers

Abstract

The present invention relates to a display driving system. In this system, a plurality of memories capable of synchronously being read and written are used as frame buffers. When the image data is transmitted to the memory, the memory will synchronously output the image data to the display device. Therefore, in the inventive system, the memory capacity required for driving can be reduced and the circuit and control system can be simplified.

This display driving system comprises a plurality of memories capable of synchronously being read and written to be used as buffers for frame accessing, an image signal generator for processing digital image, a timing controller for being a memory and for timing controlling, a plurality of data drivers for receiving the image data and displaying it on the display device.

Claims

1. A display driving system capable of reducing the required memory space, and simplifying the control circuit, the system comprising:

a plurality of memories capable of synchronously being read and written for being used as buffers for frame accessing;

an image signal generator for processing the digital image;

a timing controller for controlling the plurality of memories capable of synchronously being read and written and the timing; and

a plurality of data drivers positioned on a display device panel for receiving the image data and displaying it on the panel.

2. The display driving system of claim 1, wherein the plurality of memories capable of synchronously being read and written are used for separately accessing the image data on the upper and lower half portions of the panel.

3. The display driving system of claim 1, wherein the output amount of the image data by the plurality of memories capable of synchronously being read and written is one half of the input amount of the image data.

9. The display driving system of claim 1, wherein the output amount of the image data by the first memory and the second memory is a half of the input amount of the image data.

4. A display driving system capable of reducing the required memory space and simplifying the control circuit, comprising:

a first memory for being a memory capable of synchronously being read and written;

a second memory for being a memory capable of synchronously being read and written;

an image signal generator for processing the digital image and being an image data source;

a timing controller for controlling the plurality of memories capable of synchronously being read and written and the timing;

a first data driver positioned on a display device panel for receiving the image data; and

a second data driver positioned on the display device panel for receiving the image data.

5. The display driving system of claim 4, wherein the first memory is connected to the first data driver.

6. The display driving system of claim 4, wherein the first memory is used for accessing the image data of the upper half portion of the panel.

7. The display driving system of claim 4, wherein the second memory is connected to the second data driver.

8. The display driving system of claim 4, wherein the second memory is used for accessing the image data of the lower half portion of the panel.