Compose rate reduction for displays

• US 20050138569A1
• Filed: 12/23/2003
• Published: 06/23/2005
• Est. Priority Date: 12/23/2003
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Corriveau, Philip J., Baxter, Brent S., Walsh, Thomas E.
• Granted Patent: US 7,506,267 B2
• Time in Patent Office: Days
• US Class Current: 715/788
• CPC Class Codes: G06T 13/80 2D [Two Dimensional] animation, e.g. using sprites
• CPC Class Codes: G09G 2340/0435 Change or adaptation of the frame rate of the video stream
• CPC Class Codes: G09G 5/14 Display of multiple viewports

Abstract

Embodiments of the present invention blend frames over a specified temporal window to produce a smooth appearance at a reduced frame rate. As the window moves further or closer to the viewer, motion blur may be accomplished by temporal averaging. In particular, the temporal average is used to blend image information for a predefined/brief interval before and after the time of the output frame, retaining all of the image information, but in a slightly blurred form. After the relevant image information is retained, frames may be displayed at a reduced output rate while retaining sufficient information to reproduce a smoothly moving animation sequence.

Claims

1. A method of generating a motion blur, comprising:

generating a series of frames of a window;

dividing the series of frames into subsets of frames;

computing a weighted average for each subset of frames; and

displaying the weighted averaged frames.

2. The method claimed in claim 1, wherein generating a series of frames of a window further comprises:

representing x frames per second of an application window as it is opened for viewing.

3. The method claimed in claim 1, wherein dividing the series of frames into subsets of frames further comprises:

dividing the series of n frames into a series of n/x sets of frames, each set consisting of y frames.

4. The method claimed in claim 1, wherein computing a weighted average for each subset of frames further comprises:

using a temporal average to blend image information for a predefined/brief interval before and after the time of an output frame.

5. The method claimed in claim 1, wherein computing a weighted average for each subset of frames further comprises:

computing a weighted average for a selected number of adjacent high-speed frames.

6. A machine readable medium having stored therein a plurality of machine readable instructions executable by a processor to provide for motion blurring, comprising:

instructions to generate a series of frames of a window;

instructions to divide the series of frames into subsets of frames;

instructions to compute a weighted average for each subset of frames; and

instructions to display the weighted averaged frames.

7. The machine readable medium claimed in claim 6, wherein instructions to generate a series of frames of a window further comprises:

instructions to represent x frames per second of an application window as it is opened for viewing.

8. The machine readable medium claimed in claim 6, wherein instructions to divide the series of frames into subsets of frames further comprises:

instructions to divide the series of n frames into a series of n/x sets of frames, each set consisting of y frames.

9. The machine readable medium claimed in claim 6, wherein instructions to compute a weighted average for each subset of frames further comprises:

instructions to use a temporal average to blend image information for a predefined/brief interval before and after the time of an output frame.

10. The machine readable medium claimed in claim 6, wherein instructions to compute a weighted average for each subset of frames further comprises:

instructions to compute a weighted average for a selected number of adjacent high-speed frames.

11. A system comprising:

a display processor to generate a series of frames of a window, divide the series of frames into subsets of frames, compute a weighted average for each subset of frames, and displayng the weighted averaged frames.

12. The system claimed in claim 11, further comprising:

a memory controller in communication with the display processor.

13. The system claimed in claim 11, wherein the display processor is configured as a stand-alone device.

14. The system claimed in claim 11, further comprising:

a memory for storing the series of frames of the window.