Universal decoder for use in a network media player

• US 7,240,120 B2
• Filed: 07/17/2002
• Issued: 07/03/2007
• Est. Priority Date: 08/13/2001
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Kridner, Jason, Nadeski, Mark, Frantz, Gene A, Gelabert, Pedro
• Primary Examiner(s): Najjar; Saleh
• Assistant Examiner(s): Hamza; Faruk
• Application Number:
  US10/196,919
• Publication Number:
  US 20030033449A1
• Time in Patent Office: 1,812 Days
• Field of Search: 709/231, 709217-219, 709201-203, 709/236, 709/238, 710/1
• US Class Current: 709/231
• CPC Class Codes: H04N 21/4437 Implementing a Virtual Machine [VM] virtual machines in general G06F9/45533
• CPC Class Codes: H04N 21/8193 dedicated tools, e.g. video decoder software or IPMP tool

Abstract

A media player coupled to a network contains a processor, non-volatile memory, volatile memory, a driver, and input and output ports. The media player receives a media file over the network that contains an encoded media stream and a universal decoder. The player'"'"'s processor converts or translates (or otherwise generates) the universal decoder into a player-specific decoder which may differ from the universal decoder. A library of routines stored in the non-volatile memory is used to create the player-specific decoder. The media stream downloaded to the media player may comprise audio, video, or any other desired type of media. In this manner, each media player can generate a decoder that differs, not only from the universal decoder, but may also differ from other media players thereby alleviating the burden on the media source from having to download the encoded media with a decoder specific to the target media player.

Claims

1. A media player which can be coupled to a network, comprising:

a processor;

a read only memory storing interpreter software and a library of routines executable by said processor, said interpreter software and said library of routines selected for a type media player from a plurality of corresponding sets of interpreter software and library of routines, each set corresponding to one of a plurality of types of media players;

an input port coupled to said processor which receives encoded media and a universal decoder; and

a driver coupled to said memory which provides decoded media to an output device;

said processor operable to

convert said universal decoder via said interpreter software and said library of routines into a player-specific decoder based on said universal decoder, and

decode said encoded media via said player-specific decoder.

2. The media player of claim 1, wherein said encoded media comprises encoded audio and said driver generates audio electrical signals based on said decoded media.

3. The media player of claim 1, wherein said encoded media comprises encoded video and said driver generates video electrical signals based on said decoded media.

4. The media player of claim 1, wherein said encoded media comprises encoded audio and video and said driver generates video electrical signals based on said decoded media.

5. The media player of claim 1 further including volatile memory coupled to said processor in which said processor stores said player-specific decoder.

6. The media player of claim 5 wherein said volatile memory stores the decoded media.

7. The media player of claim 6 wherein said driver retrieves said decoded media from said volatile memory.

8. A method of providing a media stream to a user of a media player, comprising:

(a) receiving an encoded media stream;

(b) receiving a universal decoder associated with said encoded media stream;

(c) storing interpreter software and a library of routines executable by a processor in read only memory on the media player, said interpreter software and said library of routines selected for a type media player from a plurality of corresponding sets of interpreter software and library of routines, each set corresponding to one of a plurality of types of media players;

(d) converting said universal decoder to a media player-specific decoder format using the interpreter software and the library of routines; and

(e) using said player-specific decoder to decode said encoded media stream.

9. The method of claim 8 wherein said encoded media stream comprises encoded audio.

10. The method of claim 8 wherein said encoded media stream comprises encoded video.

11. The method of claim 8 wherein said encoded media stream comprises encoded audio and video.

12. The method of claim 8 wherein the encoded media stream and universal decoder are received over a network.

13. The method of claim 8 wherein the encoded media stream and universal decoder are received over the Internet.

14. The method of claim 8 wherein the encoded media stream and universal decoder are received from a storage medium.

15. The method of claim 8 further including generating electrical signals indicative of said decoded media stream.

16. The method of claim 15 wherein said electrical signals represent audio and are provided to an audio output device.

17. The method of claim 15 wherein said electrical signals represent video and are provided to a video output device.

18. A media system, comprising:

a network containing a file which includes an encoded media stream and a universal decoder; and

a media player coupled to said network and comprising;

a processor;

a read only memory storing interpreter software and a library of routines executable by said processor, said interpreter software and said library of routines selected for a type media player from a plurality of corresponding sets of interpreter software and library of routines, each set corresponding to one of a plurality of types of media players;

an input port coupled to said processor which receives said file;

said processor operable to

convert said universal decoder via said interpreter software and said library of routines to generate a player-specific decoder based on said universal decoder, and

decode said encoded media via said player-specific decoder.

19. The media system of claim 18 wherein said media stream comprises audio.

20. The media system of claim 18 wherein said media stream comprises video.

21. A method of providing a media stream to a user of a media player comprising the steps of:

encoding the media stream in a predetermined encoding/decoding format;

generating a universal decoder for the predetermined encoding/decoding format applicable to a plurality of differing types of media players;

generating for each of the plurality of differing types of media players interpreter software and a corresponding library of routines, each interpreter software and corresponding library of routines operable to convert the universal decoder to a player-specific decoder for the corresponding type media player;

storing at the media player interpreter software and a library of routines corresponding to the type of the media player;

transmitting the encoded media stream and the universal decoder to the media player;

converting the universal decoder to a player-specific decoder at the media player employing the stored interpreter software and library of routines; and

decoding the encoded media stream at the media player employing the player-specific decoder.