Video Processing Method and Video Processing System

• US 20110234908A1
• Filed: 02/11/2011
• Published: 09/29/2011
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Xueshan Technologies Inc. (Wi-LAN Inc.)
• Original Assignee: MediaTek, Inc.
• Inventors: Chen, Chun-Han, Hsu, Shih-Hsuan
• Granted Patent: US 9,565,466 B2
• Time in Patent Office: Days
• US Class Current: 348/569
• CPC Class Codes: H04N 21/4312 involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4882 for displaying messages, e.g. warnings, reminders arrangements for providing short real-time information to substation in data switching networks H04L12/1895

Abstract

A video processing system is provided. A video signal processor receives a video signal, processes the video signal to obtain video images and program information and stores the program information in a program information buffer. A microprocessor issues an on screen display (OSD) paint command and accesses the program information buffer to obtain the program information. An OSD control module receives the OSD paint command and acquires the program information from the microprocessor, and converts the program information and initial attributes to form an OSD image in response to the OSD paint command.

Claims

1. A video processing system, comprising:

a video signal processor, receiving a video signal, processing the video signal to obtain a plurality of video images and program information, and storing the program information in a program information buffer;

a microprocessor, issuing an on screen display (OSD) paint command and accessing the program information buffer to obtain the program information; and

an OSD control module, receiving the OSD paint command and acquiring the program information from the microprocessor, and converting the program information and a plurality of initial attributes to form an OSD image in response to the OSD paint command.

2. The video processing system as claimed in claim 1, wherein the microprocessor accesses the program information buffer to obtain the program information and transfers the program information to the OSD control module in response to a program information requiring request, and wherein the OSD control module transmits the program information requiring request to the microprocessor after receiving the OSD paint command.

3. The video processing system as claimed in claim 1, wherein the program information buffer is comprised in the video signal processor.

4. The video processing system as claimed in claim 1, further comprising:

a plane mixer, receiving the video images and the OSD image and selectively outputting the video images and the OSD image to a display device.

5. The video processing system as claimed in claim 4, wherein the plane mixer further blends the video images and the OSD image so that the OSD image is superimposed on the video images.

6. The video processing system as claimed in claim 1, wherein the OSD control module comprises:

an OSD information memory, storing the initial attributes;

a graphic unit, converting the program information and the initial attributes to form the OSD image; and

an OSD image buffer, storing the OSD image.

7. The video processing system as claimed in claim 6, wherein the graphic unit converts the program information and the initial attributes to form the OSD image in a bitmap format.

8. A video processing method for a video processing system comprising a program information buffer, comprising:

receiving a video signal and processing the video signal to obtain a plurality of video images and program information;

storing the program information in the program information buffer;

issuing an on screen display (OSD) paint command to begin painting an OSD image;

acquiring the program information from the program information buffer in response to the OSD paint command; and

generating the OSD image according to the program information and a plurality of initial attributes.

9. The video processing method as claimed in claim 8, wherein the video processing system further comprises a microprocessor issuing the OSD paint command and an OSD control module receiving the OSD paint command, and the step of acquiring the program information in response to the OSD paint command further comprises:

issuing a program information requiring request in response to the OSD paint command by the OSD control module;

accessing the program information buffer to obtain the program information in response to the program information requiring request by the microprocessor; and

transferring the obtained program information to the OSD control module by the microprocessor.

10. The method as claimed in claim 8, further comprising:

blending the video images and the OSD image so that the OSD image is superimposed on the video images; and

displaying the blended OSD image and video images.

11. The method as claimed in claim 8, wherein the OSD image is generated in a bitmap format.

12. A video processing system, comprising:

a video signal processor, comprising a program information buffer, receiving a video signal, processing the video signal to obtain a plurality of video images and program information, and storing the program information in the program information buffer; and

an on screen display (OSD) control module, receiving an OSD paint command, and acquiring the program information from the program information buffer and converting the program information and a plurality of initial attributes to form an OSD image in response to the OSD paint command.

13. The video processing system as claimed in claim 12, further comprising:

a microprocessor, issuing the OSD paint command, receiving a program information requiring request, and accessing the program information buffer to obtain the program information and further transferring the program information to the OSD control module in response to the program information requiring request.

14. The video processing system as claimed in claim 13, wherein the OSD control module transmits the program information requiring request to the microprocessor after receiving the OSD paint command.

15. The video processing system as claimed in claim 12, further comprising:

a plane mixer, receiving the video images and the OSD image and selectively outputting the video images and the OSD image to a display device.

16. The video processing system as claimed in claim 15, wherein the plane mixer further blends the video images and the OSD image so that the OSD image is superimposed on the video images.

17. The video processing system as claimed in claim 12, wherein the OSD control module comprises:

an OSD information memory, storing the initial attributes;

a graphic unit, converting the program information and the initial attributes to form the OSD image; and

an OSD image buffer, storing the OSD image.

18. The video processing system as claimed in claim 17, wherein the graphic unit converts the program information and the initial attributes to form the OSD image in a bitmap format.