Single-chip multi-output graphic system

• US 7,423,651 B2
• Filed: 10/13/2005
• Issued: 09/09/2008
• Est. Priority Date: 10/13/2005
• Status: Expired due to Fees

• Current Assignee: V. R. Technology Co., Ltd.
• Original Assignee: V. R. Technology Co., Ltd.
• Inventors: Chang, Jung-Che, Wang, Tai-Cheng
• Primary Examiner(s): Sajous; Wesner
• Application Number:
  US11/249,672
• Publication Number:
  US 20070085852A1
• Time in Patent Office: 1,062 Days
• Field of Search: 345 11- 13, 345/2.2, 345501-506, 345/519, 345629-630, 345/589, 345/597, 345/619, 345/600, 382/162, 382/167, 382164-165, 358518-519
• US Class Current: 345/519
• CPC Class Codes: G06F 3/1431 using a single graphics controller

Abstract

The present invention provides a single-chip but multi-output graphic system which provides identical or different graphic images on two display screens. The graphic system comprises at least a multimedia database, a first input process router, a second input process router, a first graphic processing unit and a second graphic processing unit. The first input process router selects the backdrop graphics and the moving object graphics (which are both provided by the multimedia database), feeds them into the first graphic processing unit and then outputs the processed graphics onto either the first display unit or the second display unit. Similarly, the second graphic processing units processes the backdrop graphics and the moving object graphics selected by the second input process router and then outputs the process graphics onto either the first display unit or the second display unit.

Claims

1. A single-chip multi-output graphic system, comprising:

a multimedia database, storing multiple backdrop graphics and multiple moving object graphics;

a first input process router for outputting a first set of backdrop graphics and moving object graphics from said multimedia database determined by a display rule;

a second input process router for outputting a second set of backdrop graphics and moving object graphics from said multimedia database determined by said display rule;

a first graphic processing unit, processing said first set of backdrop graphics and moving object graphics and providing output graphics to either a first display unit or a second display unit; and

a second graphic processing unit, processing said second set of backdrop graphics and moving object graphics and providing output graphics to said first display unit or said second display unit.

2. The single-chip multi-output graphic system as claimed in claim 1, wherein said first graphic processing unit comprises at least:

an overlay module, overlaying said first set of backdrop graphics and moving object graphics and producing a first index color; and

a palette module, converting said first index color into a first physical color; and

wherein said second graphic processing unit comprises at least;

an overlay module, overlaying said second set of backdrop graphics and moving object graphics and producing a second index color; and

a palette module, converting said second index color into a second physical color.

3. The single-chip multi-output graphic system as claimed in claim 2, wherein said system further comprises:

a first output overlay module for overlaying said first physical color and said second physical color and providing output to said first display unit; and

a first output router, selecting said first physical color from said first graphic processing unit according to said display rule and outputting said first physical color to said first output overlay module.

4. The single-chip multi-output graphic system as claimed in claim 3, wherein said system further comprises:

a second output router, selecting said second physical color from said second graphic processing unit according to said display rule and outputting said second physical color to said first output overlay module.

5. The single-chip multi-output graphic system as claimed in claim 2, wherein said system further comprises:

a first output overlay module for overlaying said first physical color and said second physical color and providing output to said first display unit; and

a second output router, selecting said second physical color from said second graphic processing unit according to said display rule and outputting said second physical color to said first output overlay module.

6. The single-chip multi-output graphic system as claimed in claim 4, wherein said system further comprises:

a second output overlay module for overlaying said first physical color and said second physical color and providing output to said second display unit; and

a third output router, selecting said first physical color from said first graphic processing unit according to said display rule and outputting said first physical color to said second output overlay module.

7. The single-chip multi-output graphic system as claimed in claim 6, wherein said system further comprises:

a fourth output router, selecting said second physical color from said second graphic processing unit according to said display rule and outputting said second physical color to said second output overlay module.