System to add selectivley persistent resource data to unused bandwidth of digital movie

• US 5,745,642 A
• Filed: 07/26/1996
• Issued: 04/28/1998
• Est. Priority Date: 03/15/1996
• Status: Expired due to Fees

• Current Assignee: Broderbund Software, Inc (Riverdeep Group Plc)
• Original Assignee: Broderbund Software, Inc (Riverdeep Group Plc)
• Inventors: Ahn, Esteban
• Primary Examiner(s): TRAN, THAI Q
• Application Number:
  US08/687,698
• Time in Patent Office: 641 Days
• Field of Search: 395/154, 395/153, 386/95, 386/96, 386/98, 386/104, 386/105, 386/106, 348/552, 348/423, 348/461, 348/464, 348/465, 348/473, 348/474, 348/476, 348/477, 348/478, 348/479, 348/480
• US Class Current: 386/326
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1108 Web based protocols, e.g. webRTC
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/23611 Insertion of stuffing data into a multiplex stream, e.g. to obtain a constant bitrate synchronisation arrangements in time-division multiplex systems using bit stuffing for systems with different or fluctuating information rates H04J3/073
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/4143 embedded in a Personal Computer [PC]
• CPC Class Codes: H04N 21/42646 for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
• CPC Class Codes: H04N 21/42692 for reading from or writing on a volatile storage medium, e.g. Random Access Memory [RAM]
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 21/4348 Demultiplexing of additional data and 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: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99948 Application of database or data structure, e.g. distributed, multimedia, or image

Abstract

A method for improving the performance of a multimedia software by interleaving resource and movie data is provided. It is observed that movie data has uneven demand for bandwidth. There are frames of the movie data that utilize less than the bandwidth of some memory devices (e.g., CDROM) or communication networks (e.g., the Internet) and there are frames that require the maximum available bandwidth. One embodiment of the present invention involves interleaving resource data that is not used in the current frame into movie data of this frame if the movie data does not fully utilize the bandwidth. The resource data could be used in subsequent frames during the playing of the movie or after the termination of the movie. In another embodiment of the present invention, the resource data is broken into small pieces. These pieces can be easily interleaved into different frames so as to maximize the use of the transfer rate.

Claims

1. A method for recording data on a nonvolatile storage medium and playing said recorded data on a computer, said computer having a reader for reading said nonvolatile storage medium at a predetermined transfer rate and system RAM for temporary storage, said recorded data containing distal movie data and resource data to be used after playing said digital movie data, said method comprising the steps of:

recording said resource data, comprising the steps of;

encoding said digital movie data;

encoding said resource data such that said resource data is distinguishable from said encoded digital movie data;

determining an amount of encoded resource data that can be interleaved into said encoded digital movie data, said amount being related to an amount of encoded digital movie data needed for playing during a predetermined time interval;

interleaving said amount of encoded resource data into said encoded digital movie data; and

writing said interleaved data into said nonvolatile storage medium; and

playing back said interleaved data, comprising the steps of;

retrieving said interleaved data from said nonvolatile storage medium;

recovering said resource data from said retrieved interleaved data while said digital movie data is played;

loading at least a portion of said recovered resource data in said system RAM; and

upon completion of playing said digital movie data, using said loaded resource data.

2. The method of claim 1 wherein said recording step further comprises a step of dividing said resource data into a plurality of pieces.

3. The method of claim 2 wherein said digital movie data is organized in frames, and wherein said interleaving step comprises the step of interleaving said plurality of pieces into a plurality of frames.

4. The method of claim 3 wherein said recovering step comprises the steps of:

regenerating said plurality of pieces from said retrieved interleaved data; and

assembling said recovered pieces into said resource data.

5. The method of claim 1 wherein said digital movie data is organized in frames, and wherein said determining step further comprises the step of scanning a list of frame data sizes for each frame.

6. The method of claim 1 wherein said playing back step further comprises the step of discarding a portion of said retrieved resource data which is not used by an application program.

7. A method for communicating digital data via a network access device and for playing said digital data on a computer, said network access device capable of communicating digital data at a predetermined transfer rate, said computer having system RAM for temporary storage, said communicated data containing distal movie data and resource data to be used after playing said movie data, said method comprising the steps of:

encoding said digital movie data;

encoding said resource data such that said resource data is distinguishable from said encoded distal movie data;

determining an amount of encoded resource data that can be interleaved into said encoded distal movie data, said amount being related to an amount of encoded digital movie data needed for playing during a predetermined time interval;

interleaving said amount of encoded resource data into said encoded digital movie data;

communicating said interleaved data using said predetermined transfer rate; and

playing back said interleaved data on said computer, comprising the steps of;

recovering said resource data from said communicated interleaved data while said digital movie data is played;

loading at least a portion of said recovered resource data in said system RAM; and

upon completion of playing said digital movie data, using said loaded resource data.

8. The method of claim 7 further comprising a step of dividing, prior to encoding, said resource data into a plurality of pieces.

9. The method of claim 8 wherein said digital movie data is organized in frames, and wherein said interleaving step comprises the step of interleaving said plurality of pieces into a plurality of frames.

10. The method of claim 9 wherein said recovering step comprises the steps of:

regenerating said plurality of pieces from said communicated interleaved data; and

assembling said recovered pieces into said resource data.

11. The method of claim 7, wherein said digital movie data is organized in frames, and wherein said determining step further comprises the step of scanning a list of frame data sizes for each frame.

12. The method of claim 7 wherein said playing back step further comprises the step of discarding a portion of said communicated resource data which is not used by an application program.