Methods and systems for achieving transition effects with MPEG-encoded picture content

• US 20060285586A1
• Filed: 08/10/2005
• Published: 12/21/2006
• Est. Priority Date: 05/16/2005
• Status: Abandoned Application

• Current Assignee: Ensequence Incorporated
• Original Assignee: Ensequence Incorporated
• Inventors: Westerman, Larry A.
• Application Number:
  US11/200,957
• Publication Number:
  US 20060285586A1
• Time in Patent Office: Days
• US Class Current: 375/240
• CPC Class Codes: H04N 19/126 Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
• CPC Class Codes: H04N 19/179 the unit being a scene or a shot
• CPC Class Codes: H04N 19/48 using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data motion estimation in a transform domain H04N19/547; processing of decoded motion vectors H04N19/513
• CPC Class Codes: H04N 19/61 in combination with predictive coding

Abstract

Methods and systems of using a single MPEG frame to produce a fade effect that extends over more than one frame period. An example system includes a computer-based device that includes a receiver that receives an MPEG formatted image from a source system over a network, a component that modifies a sequence header of the received MPEG formatted image based on a predetermined fade event, and a decoder that decodes the MPEG formatted image with the modified sequence header. Also, the system includes a display device that displays the decoded image.

Claims

1. A method comprising:

receiving MPEG formatted images;

generating one or more fade frame images between at least two of the received MPEG formatted images; and

displaying the MPEG formatted images with the generated fade frame images.

2. The method of claim 1, wherein generating includes:

modifying a sequence header of one of the received MPEG formatted images based on a pre-determined fade event; and

decoding the MPEG formatted image with the modified sequence header to generate fade frame images.

4. The method of claim 2, further comprising repeating decoding a number of times based on the pre-determined fade event.

5. The method of claim 4, wherein the pre-determined fade event includes a manually selected fade signal.

6. The method of claim 4, wherein the pre-determined fade event includes an automatically selected fade signal.

8. The method of claim 2, wherein the received MPEG formatted image is a B-frame formatted image.

9. The method of claim 8, further comprising repeating modifying a number of times based on the pre-determined fade event.

10. The method of claim 9, wherein the pre-determined fade event includes a manually selected fade signal.

11. The method of claim 9, wherein the pre-determined fade event includes an automatically selected fade signal.

3. The method of claim 3, wherein at least one of the received MPEG formatted images is a P-frame formatted image.

7. The method of claim 3, wherein modifying includes modifying a non-intra quantizer matrix included within the sequence header.

12. A system comprising:

a computer-based device comprising;

a receiver configured to receive MPEG formatted images; and

a component configured to generate one or more fade frame images between at least two of the received MPEG formatted images; and

a display device configured to display the MPEG formatted images with the generated fade frame images.

13. The system of claim 12, wherein the component modifies a sequence header of one of the received MPEG formatted images based on a pre-determined fade event, and decodes the MPEG formatted image with the modified sequence header.

14. The system of claim 13, wherein the received MPEG formatted images include one or more P-frame formatted image.

15. The system of claim 13, wherein the decoder repeats decoding the P-frame formatted image a number of times based on the pre-determined fade event.

16. The system of claim 15, wherein the pre-determined fade event includes a manually selected fade signal.

17. The system of claim 15, wherein the pre-determined fade event includes an automatically selected fade signal.

18. The system of claim 13, wherein the component modifies a non-intra quantizer matrix included within the sequence header.

19. The system of claim 13, wherein the received MPEG formatted image is a B-frame formatted image.

20. The system of claim 19, wherein the component repeats modifying the sequence header a number of times based on the pre-determined fade event.

21. The system of claim 20, wherein the pre-determined fade event includes a manually selected fade signal.

22. The system of claim 20, wherein the pre-determined fade event includes an automatically selected fade signal.