Extraction of audio/visual segment from digital versatile disk content

• US 7,039,298 B1
• Filed: 03/30/2000
• Issued: 05/02/2006
• Est. Priority Date: 03/30/2000
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: LSI Logic Corporation (Broadcom, Inc.)
• Inventors: Watkins, Daniel
• Primary Examiner(s): Tran, Thai
• Application Number:
  US09/539,681
• Time in Patent Office: 2,224 Days
• Field of Search: 386/45, 386/125, 386/126, 386/131, 360/13, 360/15, 369 83- 85
• US Class Current: 386/230
• CPC Class Codes: G11B 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 9/8042 involving data reduction

Abstract

A segment of audio/visual (A/V) content is extracted from the overall DVD content of a DVD program or disk. A DVD player with A/V segment extraction functionality receives commands from a user that identify start and stop points in the DVD content for the desired A/V segment and that specify each of the available DVD options or features which may be included in the extracted A/V segment. Relevant blocks of data within the DVD data structure of the DVD content are identified and new DVD-standard information for assembling a new complete DVD data structure containing only the extracted A/V segment and the available DVD options and features and additional non-DVD-standard information that can be played back on a conventional DVD player are added. The complete DVD data structure is assembled and either stored locally or sent to a remote destination device for remote playback, re-editing or other use.

Claims

1. A method of creating a selected segment of DVD formatted audio/visual data capable of being played on a DVD player from playable source DVD data, the playable source DVD data including audio/visual (A/V) content data and DVD formatting data for the content data, the A/V content data of the source DVD data formed by blocks of data, the method comprising:

instructing a user to (i) display a start frame using one or more playback control keys while the source DVD data is played back and (ii) identify the frame being displayed as the start frame by pressing a predetermine key;

instructing the user to (i) display a stop frame using the one or more playback control keys while the source DVD data is played back and (ii) identify the frame being displayed as the stop frame by pressing the predetermine key;

selecting a start point and a stop point within the source DVD data, based on the start frame and the stop frame identified by the user, to establish the extent of the selected segment as less than all of the source DVD data;

identifying blocks of data within the source DVD data as constituting the A/V content data of the selected segment;

copying the identified blocks of data;

determining DVD formatting data for the identified blocks of data; and

assembling (i) the identified blocks of data and (ii) the DVD formatting data determined for the identified blocks of data such that the assembled data can be played by a DVD player.

2. A method as defined in claim 1 further comprising the steps of:

identifying the blocks of DVD content data by playing back the source DVD data and reading the blocks of data between the start point and the stop point; and

assembling the selected playable segment of DVD formatted A/V data by playing back the source DVD data a second time, reading the blocks of data between the start point and stop point again, copying the identified blocks of data, and combining the copied blocks of data with the determined DVD formatting data.

3. A method as defined in claim 1 further comprising the step of:

sending the selected playable segment of DVD formatted A/V data to a remote DVD device.

4. A method as defined in claim 3 further comprising the step of:

sending the selected playable segment of DVD formatted A/V data as soon as the selected playable segment of DVD formatted A/V data is assembled without copying the selected playable segment of DVD formatted A/V data to a local memory.

5. A method as defined in claim 4 further comprising the steps of:

sequentially assembling a plurality of sub-portions of the selected playable segment of DVD formatted A/V data; and

sending each sub-portion while concurrently assembling the next sequential sub-portion.

6. A method as defined in claim 3 further comprising the step of:

temporarily buffering the selected playable segment of DVD formatted A/V data in a local storage buffer at a pace of the sending step.

7. A method as defined in claim 1 further comprising the step of:

storing the selected playable segment of DVD formatted A/V data in a local memory.

8. A method as defined in claim 1, wherein the start and stop points are indicated by time information, further comprising the step of:

converting the start and stop points from the time information into addresses of necessary addressable segments of the content data.

9. A method as defined in claim 1 further comprising the steps of:

selecting non-DVD-standard information that relates to or identifies the segment of DVD content and/or the extraction of the segment; and

assembling the selected playable segment of DVD formatted A/V data from the selected non-DVD-standard information.

10. A method as defined in claim 9 further comprising the step of:

selecting the non-DVD standard information from options including extraction time, segment number, user'"'"'s name, search used and segment source.

11. A method as defined in claim 9 further comprising the step of:

displaying the non-DVD standard information with conventional DVD subpicture unit overlay capabilities.

12. A method as defined in claim 1, wherein the DVD content data includes conventional DVD features, and the method further comprises the steps of:

selecting at least one of the conventional DVD features to be included in the selected playable segment of DVD formatted A/V data; and

identifying blocks of data from the content data relating to the selected DVD features.

13. A method as defined in claim 1 wherein the copied blocks of the content data are compressed.

14. A method as defined in claim 1 wherein the copied blocks of the content data are uncompressed.

15. A DVD device which interacts with a media containing a first DVD data structure capable of being played back by a conventional DVD player and which includes a desired segment of DVD content, comprising:

a DVD drive receptive of the media;

a DVD decoder connected to the DVD drive;

a controller connected to the DVD drive and the DVD decoder and operative to control the DVD drive to supply signals from the media and to control the DVD decoder to assemble the first DVD data structure from the signals supplied by the DVD drive, wherein the controller is further operative (i) to instruct a user to display a start frame using one or more playback control keys while the source DVD data is played back, (ii) to identify the frame being displayed as the start frame in response to the user pressing a predetermine key, (iii) to instruct the user to display a stop frame using the one or more playback control keys while the source DVD data is played back, (iv) to identify the frame being displayed as the stop frame in response to the user pressing the predetermine key, (v) to identify the desired segment from the first DVD data structure based on the start frame and the stop frame identified by the user while said first DVD data structure is played back, (vi) to control the DVD decoder to read the desired segment from the DVD content of the first DVD data structure, and

(vii) to assemble the desired segment into a second DVD data structure such that the desired segment can be played back by a conventional DVD player.

16. A DVD device as defined in claim 15 wherein:

the desired segment comprises a start point and stop point determined by the start frame and the stop frame provided by the user to identify the desired segment; and

the controller identifies the desired segment from the start point and the stop point.

17. A DVD device as defined in claim 16 wherein:

the DVD content comprises conventional DVD features between the start point and the stop point for the desired segment; and

the second DVD data structure comprises desired ones of the conventional DVD features included by the controller.

18. A DVD device as defined in claim 15 wherein:

the second DVD data structure comprises non-DVD-standard information related to or identifying the desired segment and/or the extraction of the desired segment, the non-DVD-standard information is provided by a user and included by the controller in assembling the second DVD data structure.

19. A DVD device as defined in claim 15 further comprising:

a communication interface connected to the DVD decoder and the controller and which communicates with a remote device, wherein the controller routes the second DVD data structure to the communication interface, which sends the second DVD data structure to the remote device.

20. A DVD device as defined in claim 19 wherein:

the controller assembles the second DVD data structure in sequential portions thereof and routes each portion to the communication interface while assembling the next sequential portion; and

the communication interface sends each sequential portion upon receipt thereof to the remote device.

21. A DVD device as defined in claim 15 further comprising:

a memory device in communication with the DVD decoder and the controller, wherein the controller stores the second DVD data structure in the memory device.