MULTI-PROGRAM VIEWING IN A WIRELESS APPARATUS

• US 20070195737A1
• Filed: 01/12/2007
• Published: 08/23/2007
• Est. Priority Date: 02/21/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Walker, Gordon Kent, Raveendran, Vijayalakshmi R.
• Granted Patent: US 8,428,048 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04H 20/26 Arrangements for switching distribution systems
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/2365 Multiplexing of several video streams
• CPC Class Codes: H04N 21/4316 for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/4347 Demultiplexing of several video streams
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/4384 involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
• CPC Class Codes: H04N 21/47 End-user applications
• CPC Class Codes: H04N 21/4858 for modifying screen layout parameters, e.g. fonts, size of the windows
• CPC Class Codes: H04N 21/64315 DVB-H
• CPC Class Codes: H04N 5/45 Picture in picture , e.g. displaying simultaneously another television channel in a region of the screen

Abstract

This disclosure describes a number of techniques for processing multimedia data that can improve multi-program “picture-in-picture” viewing, particularly in a wireless mobile apparatus setting. In one example, a method includes receiving multiple channels of the multimedia data, decoding frames associated with two or more of the channels, presenting first frames of a first channel at a first frame rate, and presenting second frames of a second channel at a second frame rate while presenting the first frames, wherein the second frame rate is lower than the first frame rate. In another example, method includes receiving multiple channels of the multimedia data, receiving channel switch frames (CSFs) associated with the multiple channels, and simultaneously presenting the CSFs associated with two or more of the multiple channels to a user.

Claims

1. A method of processing multimedia data, the method comprising:

receiving multiple channels of the multimedia data;

receiving channel switch frames (CSFs) associated with the multiple channels;

decoding the CFSs; and

simultaneously presenting the CSFs associated with two or more of the multiple channels to a user.

2. The method of claim 1, wherein the CSFs are received in the multiple channels.

3. The method of claim 2, wherein the multiple channels include a media logical channel (MLC) comprising pointers to the CSFs within other channels.

4. The method of claim 1, wherein the multiple channels include a media logical channel (MLC) that contains the CSFs for other channels.

5. The method of claim 1, further comprising:

receiving user input selecting one of the multiple channels; and

presenting the selected one of the channels at a higher frame rate than that associated with presenting the CSFs.

6. An apparatus that processes multimedia data comprising:

a receiver that receives multiple channels of the multimedia data and receives channel switch frames (CSFs) associated with the multiple channels;

one or more decoders to decode at least some of the CSF; and

a display, wherein the display simultaneously presents the CSFs associated with two or more of the multiple channels to a user.

7. The apparatus of claim 6, wherein the CSFs are received in the multiple channels.

8. The apparatus of claim 7, wherein the multiple channels include a media logical channel (MLC) comprising pointers to the CSFs within other channels.

9. The apparatus of claim 6, wherein the multiple channels include a media logical channel (MLC) that contains the CSFs for other channels.

10. The apparatus of claim 6, wherein:

user input selecting one of the multiple channels is received; and

the display presents the selected one of the channels at a higher frame rate than that associated with presenting the CSFs.

11. An apparatus comprising:

means for receiving multiple channels of multimedia data;

means for receiving channel switch frames (CSFs) associated with the multiple channels;

means for decoding the CFSs; and

means for simultaneously presenting the CSFs associated with two or more of the multiple channels to a user.

12. The apparatus of claim 11, wherein the CSFs are received in the multiple channels.

13. The apparatus of claim 12, wherein the multiple channels include a media logical channel (MLC) comprising pointers to the CSFs within other channels.

14. The apparatus of claim 11, wherein the multiple channels include a media logical channel (MLC) that contains the CSFs for other channels.

15. The apparatus of claim 11, further comprising:

means for receiving user input selecting one of the multiple channels; and

means for presenting the selected one of the channels at a higher frame rate than that associated with presenting the CSFs.

16. A computer program product for processing multimedia data comprising:

a computer readable medium comprising instructions that upon execution cause a computer to;

receive multiple channels of the multimedia data;

receive channel switch frames (CSFs) associated with the multiple channels;

decode the CSFs; and

simultaneously present the CSFs associated with two or more of the multiple channels to a user.

17. A processor for processing multimedia data, the processor being adapted to:

receive multiple channels of the multimedia data;

receive channel switch frames (CSFs) associated with the multiple channels;

decode the CSFs; and

cause a display to simultaneously present the CSFs associated with two or more of the multiple channels to a user.