Video processing method and video processing system

• US 9,565,466 B2
• Filed: 02/11/2011
• Issued: 02/07/2017
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Xueshan Technologies Inc. (Wi-LAN Inc.)
• Original Assignee: MediaTek, Inc.
• Inventors: Hsu, Shih-Hsuan, Chen, Chun-Han
• Primary Examiner(s): Huynh, An Son P
• Application Number:
  US13/025,349
• Publication Number:
  US 20110234908A1
• Time in Patent Office: 2,188 Days
• Field of Search: 348/569, 348/725, 348/468
• US Class Current: 1/1
• 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 for receiving a video signal and for processing the video signal to obtain a plurality of video images and program information, and storing the program information in a program information buffer;

an on screen display (OSD) information memory for storing a plurality of initial attributes related to an OSD image;

a microprocessor for issuing an OSD paint command and accessing the program information buffer to obtain the program information;

an OSD control module for receiving the OSD paint command directing the OSD control module to begin painting a frame of the OSD image, the OSD control module acquiring the program information though the microprocessor, and converting the program information and the plurality of initial attributes to form the OSD image in response to the OSD paint command, wherein the plurality of initial attributes are defined by the video processing system receiving the video signal, wherein the OSD control module comprises;

a graphic unit directly converting the program information and the plurality of initial attributes to form the OSD image without storing the program information in the OSD information memory; and

an OSD image buffer storing the OSD image comprising a frame and the program information; and

a plane mixer for receiving the plurality of video images and the OSD image and selectively outputting the video images and the OSD image to a display device in response to control signals from the microprocessor.

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, wherein the plane mixer further blends the video images and the OSD image so that the OSD image is superimposed on the plurality of video images.

5. The video processing system as claimed in claim 1, wherein the plurality of initial attributes correspond to attributes of the OSD image.

6. The video processing system as claimed in claim 5, wherein the attributes of the OSD image comprise at least one of:

a frame position of the OSD image, a frame width of the OSD image, a frame color of the OSD image, or any combination thereof.

7. The video processing system as claimed in claim 1, wherein the OSD control module converts the plurality of initial attributes into a frame of the OSD image.

8. The video processing system as claimed in claim 1, wherein the plurality of initial attributes define a size and a location of the OSD image.

9. The video processing system as claimed in claim 1, wherein the OSD control module converts the plurality of initial attributes into a frame of the OSD image in response to the OSD paint command, and draws the converted program information on the frame to form the OSD image.

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

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

storing, by the video signal processor, the program information in the program information buffer;

storing, by an on screen display (OSD) information memory, a plurality of initial attributes related to an OSD image;

issuing an OSD paint command and accessing the program information buffer, by a microprocessor, to obtain the program information;

receiving, by an OSD control module, the OSD paint command directing the OSD control module to begin painting a frame of the OSD image in response to the OSD paint command;

acquiring, by the OSD control module, the program information through the microprocessor in response to the OSD paint command;

converting, by the OSD control module, the program information and the plurality of initial attributes to form the OSD image in response to the OSD paint command, wherein the plurality of initial attributes are defined by the video processing system, wherein the OSD control module comprises;

a graphic unit directly converting the program information and the plurality of initial attributes to form the OSD image without storing the program information in the OSD information memory;

storing, by an OSD image buffer, the OSD image comprising a frame and the program information;

and

receiving the plurality of video images and the OSD image and selectively outputting the video images and the OSD image, by a plane mixer, to a display device in response to control signals from the microprocessor.

11. The video processing method as claimed in claim 10, wherein acquiring, by the OSD control module, the program information through the microprocessor 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.

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

blending the plurality of video images and the OSD image so that the OSD image is superimposed on the video images.

13. The method as claimed in claim 10, wherein the OSD image is generated in a bitmap format.

14. The video processing method as claimed in claim 10, wherein acquiring, by the OSD control module, the program information from the microprocessor in response to the OSD paint command and converting, by the OSD control module, the program information and a plurality of initial attributes to form an OSD image in response to the OSD paint command further comprises:

converting the plurality of initial attributes into a frame of the OSD image in response to the OSD paint command; and

drawing the converted program information on the frame to form the OSD image.

15. A non-transitory computer-readable medium embodying a program executable in a computing device, the program, when executed by the client device causes the computing device to perform:

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

storing, by the video signal processor, the program information in the program information buffer;

storing, by an on screen display (OSD) information memory, a plurality of initial attributes related to an OSD image;

issuing an OSD paint command and accessing the program information buffer, by a microprocessor, to obtain the program information;

receiving, by an OSD control module, the OSD paint command directing the OSD control module to begin painting a frame of the OSD image in response to the OSD paint command;

acquiring, by the OSD control module, the program information through the microprocessor in response to the OSD paint command;

converting, by the OSD control module, the program information and the plurality of initial attributes to form the OSD image in response to the OSD paint command, wherein the plurality of initial attributes are defined by the video processing system;

directly converting, by a graphic unit, the program information and the plurality of initial attributes to form the OSD image without storing the program information in an OSD information memory;

storing, by an OSD buffer, the OSD image comprising a frame and the program information; and

receiving, by a plane mixer, the plurality of video images and the OSD image and selectively outputting the video images and the OSD image to a display device in response to control signals from the microprocessor.

16. The non-transitory computer-readable medium as claimed in claim 15, the program further performs:

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.

17. The non-transitory computer-readable medium as claimed in claim 16, wherein the program further performs transmitting the program information requiring request to the microprocessor after receiving the OSD paint command.

18. The non-transitory computer-readable medium as claimed in claim 15, wherein the program further performs blending the video images and the OSD image so that the OSD image is superimposed on the video images.

19. The non-transitory computer-readable medium as claimed in claim 15, wherein the program further performs converting the program information and the plurality of initial attributes to form the OSD image in a bitmap format.

20. The non-transitory computer-readable medium as claimed in claim 15, wherein the plurality of initial attributes define a size and a location of the OSD image.

21. The non-transitory computer-readable medium as claimed in claim 15, wherein the program further performs:

converting the plurality of initial attributes into a frame of the OSD image in response to the OSD paint command, and drawing the converted program information on the frame to form the OSD image.