Video feedback for reducing data rate or increasing quality in a video processing system

• US 5,689,800 A
• Filed: 06/23/1995
• Issued: 11/18/1997
• Est. Priority Date: 06/23/1995
• Status: Expired due to Term

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Downs, Terry
• Primary Examiner(s): Peng, John K.
• Assistant Examiner(s): Flynn, Nathan J.
• Application Number:
  US08/494,013
• Time in Patent Office: 879 Days
• Field of Search: 348/15, 348/6, 348/7, 348/12, 348/9, 348/13, 348/14, 348/17, 348/16, 455/4.1, 455/4.2, 455/5.1, 395/326-332, 395/200.01, 395/200.04, 395/200.05
• US Class Current: 725/114
• CPC Class Codes: H04N 7/15 Conference systems
• CPC Class Codes: H04N 7/17363 at or near the user terminal

Abstract

A video processing system and method for processing video signals in the video processing system. According to a preferred embodiment, the video processing system comprises a source system having a processor for encoding video data and a transmitter for transmitting the encoded video data to a destination system. The video processing system further comprises the destination system, which comprises a processor for decoding encoded video data; a display device for displaying the decoded video data in a window of a monitor in accordance with at least one window display parameter. The at least one window display parameter may be changed, and the destination system can notify the source system of changes in the at least one window display parameter.

Claims

1. A method for processing video signals in a source computer, the method comprising the steps of:

(a) transmitting video data to a destination computer;

wherein;

the destination computer displays the video data;

the destination computer reduces one or more of the following video data display parameters;

window size, resolution, and color range; and

the destination computer notifies the source computer of the reduction of the one or more video data display parameters; and

(b) adjusting the transmission of video data transmitted to the destination computer in accordance with the reduction of the one or more video data display parameters.

2. The method of claim 1, wherein step (b) comprises the step of reducing the quality of video data transmitted to the destination computer in accordance with the reduction of the one or more video data display parameters.

3. The method of claim 2, wherein step (b) comprises the step of scaling video data for transmission to the destination computer in accordance with the reduction of the one or more video data display parameters.

4. The method of claim 1, wherein

step (b) comprises the step of reducing the quantity of video data pixels transmitted to the destination computer when the window size parameter is reduced.

5. The method of claim 1, wherein step (b) comprises the step of transmitting only black-and-white video data when the color range parameter is reduced.

6. The method of claim 1, wherein step (b) comprises the step of reducing the quantity and increasing the quality of video data pixels transmitted to the destination computer when the window size parameter is reduced.

7. A computer for a computer system comprising a source computer and a destination computer, wherein:

the computer is one of the source computer and the destination computer;

the source computer transmits video data to the destination computer;

the destination computer displays the video data;

the destination computer reduces one or more of the following video data display parameters;

window size, resolution, and color range;

the destination computer notifies the source computer of the reduction of the one or more video data display parameters; and

the source computer adjusts transmission of video data transmitted to the destination computer in accordance with the reduction of the one or more video data display parameters.

8. The computer of claim 7, wherein the source computer reduces the quality of video data transmitted to the destination computer in accordance with the reduction of the one or more video data display parameters.

9. The computer of claim 8, wherein the source computer adjusts the transmission of video data by scaling video data for transmission to the destination computer in accordance with the reduction of the one or more video data display parameters.

10. The computer of claim 7, wherein the source computer reduces the quantity of video data pixels transmitted to the destination computer when the window size parameter is reduced.

11. The computer of claim 7, wherein the source computer transmits only black-and-white video data when the color range parameter is reduced.

12. The computer of claim 7, wherein the source computer reduces the quality and increases the quality of video data pixels transmitted to the destination computer when the window size parameter is reduced.

13. A computer-readable medium having stored thereon a plurality of instructions, wherein the plurality of instructions, when executed by a processor of a source computer, cause the processor to perform the steps of:

(a) transmitting video data to a destination computer;

wherein;

the destination computer displays the video data;

the destination computer reduces one or more of the following video data display parameters;

window size, resolution, and color range; and

the destination computer notifies the source computer of the reduction of the one or more video data display parameters; and

(b) adjusting the transmission of video data transmitted to the destination computer in accordance with the reduction of the one or more video data display parameters.

14. The storage medium of claim 13, wherein step (b) comprises the step of reducing the quality of video data transmitted to the destination computer in accordance with the reduction of the one or more video data display parameters.

15. The storage medium of claim 14, wherein step (b) comprises the step of scaling video data for transmission to the destination computer in accordance with the reduction of the one or more video data display parameters.

16. The storage medium of claim 13, wherein step (b) comprises the step of reducing the quantity of video data pixels transmitted to the destination computer when the window size parameter is reduced.

17. The storage medium of claim 13, wherein step (b) comprises the step of transmitting only black-and-white video data when the color range parameter is reduced.

18. The storage medium of claim 13, wherein step (b) comprises the step of reducing the quantity and increasing the quality of video data pixels transmitted to the destination computer when the window size parameter is reduced.