Techniques to display multimedia data during operating system initialization

Patent metadata

Field	Value
Publication number	US-9883156-B2
Application number	US-201113997208-A
Country	US
Kind code	B2
Filing date	Nov 30, 2011
Priority date	Nov 30, 2011
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

Techniques for displaying multimedia data during operating system initialization are described. In some embodiments, a method may comprise initializing a computing system, initializing a media playback system of the computing system using a first processor circuit and initializing an operating system of the computing system using a second processor circuit. In various embodiments, during the operating system initialization, one or more multimedia streams may be outputted using the media playback system. Other embodiments are described and claimed.

First claim

The invention claimed is:

1. A computer-implemented method, comprising:
initializing a computing system;
initializing a media playback system of the computing system using a first processor circuit;
initializing an operating system of the computing system using a second processor circuit;
during the operating system initialization:
receiving a program stream at demultiplexer logic of the media playback system;
extracting video and audio streams from the program stream to form an elementary stream;
performing error correction on the elementary stream;
sending the elementary stream to a first circular buffer in a reserved portion of system memory;
retrieving the elementary stream from the first circular buffer by pre-processor logic of the media playback system;
sending a compressed bit stream to a second circular buffer in the reserved portion of system memory based on the error correction; and
generating one or more multimedia streams based on the elementary stream;
outputting the one or more multimedia streams using the media playback system in place of operating system graphics configured to be output by the operating system during operating system initialization.

2. The computer-implemented method of claim 1 , comprising:
determining that the operating system initialization is complete;
interrupting the multimedia output using the second processor circuit; and
outputting one or more graphical user interface elements of the operating system using the second processor circuit.

3. The computer-implemented method of claim 1 , the one or more multimedia streams comprising high definition video and audio streams.

4. The computer-implemented method of claim 1 , the first processor circuit comprising a system-on-chip (SOC) media processor circuit and the second processor circuit comprising a central processing unit (CPU).

5. The computer-implemented method of claim 1 , comprising:
retrieving the compressed bit stream from the second circular buffer by decoder logic of the media playback system;
decoding the compressed bit stream using one or more decoding algorithms to generate one or more raw video and audio data streams; and
sending the one or more raw video and audio data streams to a third circular buffer in the reserved portion of system memory.

6. The computer-implemented method of claim 5 , comprising:
retrieving the one or more raw video and audio data streams from the third circular buffer by post-processor logic of the media playback system;
performing one or more of noise reduction or picture scaling on the one or more raw video and audio data streams to generate one or more multimedia streams; and
outputting the one or more multimedia streams.

7. An article of manufacture comprising a non-transitory computer-readable storage medium containing instructions that if executed enable a system to:
initialize a computing system;
initialize a media playback system of the computing system using a first processor circuit;
initialize an operating system of the computing system using a second processor circuit;
receive a program stream at demultiplexer logic of the media playback system;
extract video and audio streams from the program stream to form an elementary stream;
perform error correction on the elementary stream;
send the elementary stream to a first circular buffer in a reserved portion of system memory
retrieve the elementary stream from the first circular buffer by pre-processor logic of the media playback system;
send a compressed bit stream to a second circular buffer in the reserved portion of system memory based on the error correction;
generate one or more multimedia streams based on the elementary stream; and
during the operating system initialization, output the one or more multimedia streams using the media playback system in place of operating system graphics configured to be output by the operating system during operating system initialization.

8. The article of claim 7 , comprising instructions that if executed enable the system to:
determine that the operating system initialization is complete;
interrupt the multimedia output; and
output one or more graphical user interface elements of the operating system.

9. The article of claim 7 , the one or more multimedia streams comprising high definition video and audio streams.

10. The article of claim 7 , comprising instructions that if executed enable the system to:
retrieve the compressed bit stream from the second circular buffer by decoder logic of the media playback system;
decode the compressed bit stream using one or more decoding algorithms to generate one or more raw video and audio data streams; and
send the one or more raw video and audio data streams to a third circular buffer in the reserved portion of system memory.

11. The article of claim 10 , comprising instructions that if executed enable the system to:
retrieve the one or more raw video and audio data streams from the third circular buffer by post-processor logic of the media playback system;
perform one or more of noise reduction or picture scaling on the one or more raw video and audio data streams to generate one or more multimedia streams; and
output the one or more multimedia streams.

12. An apparatus, comprising:
a first processor circuit operative to:
initialize a media playback system,
receive a program stream at demultiplexer logic of the first processor circuit;
extract video and audio streams from the program stream to form an elementary stream,
perform error correction on the elementary stream, and
generate one or more multimedia streams based on the elementary stream; and
a second processor circuit operative to initialize an operating system;

the media playback system operative to output the one or more multimedia streams during the operating system initialization in place of operating system graphics configured to be output by the operating system during operating system initialization;
the first processor circuit comprising a system-on-chip (SOC) media processor circuit and the second processor circuit comprising a central processing unit (CPU);
the SOC media processing circuit comprising the demultiplexer logic, the demultiplexer logic operative to receive the program stream from a media source, and send the elementary stream to a first circular buffer in a reserved portion of system memory;
the SOC media processing circuit comprising pre-processor logic operative to retrieve the elementary stream from the first circular buffer, and send a compressed bit stream to a second circular buffer in the reserved portion of system memory based on the error correction.

13. The apparatus of claim 12 , the second processing circuit operative to determine that the operating system initialization is complete, send an interrupt to the first processing circuit to stop the multimedia stream output, and output one or more graphical user interface elements of the operating system.

14. The apparatus of claim 12 , the SOC media processing circuit comprising:
decoder logic operative to retrieve the compressed bit stream from the second circular buffer, decode the compressed bit stream using one or more decoding algorithms to generate one or more raw video and audio data streams, and send the one or more raw video and audio data streams to a third circular buffer in the reserved portion of system memory.

15. The apparatus of claim 14 , the SOC media processing circuit comprising:
post-processor logic operative to retrieve the one or more raw video and audio data streams from the third circular buffer, perfor

Assignees

• Zhou Hua
• Song Qing Jian
• Intel Corp

Inventors

• Zhou Hua
• Song Qing Jian

Classifications

• H04N9/80 Primary

  Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback · CPC title

• H04N21/4432 Primary

  Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server (resetting in general G06F1/14; program loading or initiating in general G06F9/445; bootstrapping in general G06F9/4401; secure boots of computer platforms G06F21/57) · CPC title

• H04N21/44

  Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs · CPC title

• G06F9/4406

  Loading of operating system · CPC title