Audio/visual device for capturing, searching and/or displaying audio/visual material

• US 6,901,207 B1
• Filed: 03/30/2000
• Issued: 05/31/2005
• 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): NGUYEN, HUY THANH
• Application Number:
  US09/539,686
• Time in Patent Office: 1,888 Days
• Field of Search: 386/46, 386/83, 386/95, 386/96, 386/125, 386/69, 348/468
• US Class Current: 386/314
• 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 21/4622 Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet web site content organization and management for information retrieval from the Internet G06F16/958; transmission by internet of broadcast information H04H60/82; stock exchange data over packet-switching network H04L12/1804; push services including data channel over packet-switching network H04L12/1859
• CPC Class Codes: H04N 21/4828 for searching program descriptors retrieval of video data G06F16/739
• CPC Class Codes: H04N 21/8405 represented by keywords
• CPC Class Codes: H04N 5/85 on discs or drums
• CPC Class Codes: H04N 7/163 by receiver means only

Abstract

An audio/visual (A/V) device, such as a DVD player, assists a user in finding desired programming from among DVD programs, conventional broadcast television (TV) programs and World Wide Web transmitted programs. The programs contain close caption (CC) and A/V content. The A/V device captures and stores the CC and/or A/V content either for current or later manual use by the user or concurrent automatic searching for desired program content or information. Text-based searching is performed on the CC content for a match with user-specified textual search criteria. The audio context is searched for either a change that indicates a change in programming or a match with user-specified audio search criteria. A video still image is captured from the video content for manual viewing or automatic comparison to a desired image. The A/V device also presents the information, including the A/V content, captured CC content and search results, on either a conventional TV or higher resolution progressive monitor.

Claims

1. A device for receiving and playing back audio/visual (A/V) content selected from one of a plurality of different simultaneously and continuously supplied sources of A/V content, comprising:

a receiver connected to receive the A/V content from each of the different A/V content sources and including at least one A/V signal convert to convert the A/V content received from each of the A/V content sources into corresponding digital A/V signals, the digital A/V signals including an audio portion and a video portion;

a display circuit coupled to each receiver to receive the digital A/V signals, the display circuit including video encoding circuitry for converting the video portion of the received digital A/V signal into a video display signal, the display circuit including audio encoding circuitry for converting the audio portion of the received digital A/V signal into an audio display signal, the display circuit supplying the video and audio display signals for use in creating an A/V display of the A/V content of each digital A/V signal;

a content capture unit coupled to each receiver to receive and capture a portion of the digital A/V signals corresponding to the A/V content from all of the A/V sources, the content capture unit comprising at least one of a close caption (CC) data slicer or a digitizing audio capture unit or a video still image capture unit, the CC data slicer extracting CC content from the digital A/V signals from each of the A/V sources as the captured portion of the A/V contents, the digitized audio capturing unit extracting audio content from the digital A/V signals from each of the A/V sources as the captured portion of the A/V content, and the video still image capture unit extracting a still image from the digital A/V signals from each of the A/V sources as the captured portion of the A/V content;

storage memory coupled to the content capture unit to receive and store the captured portions of the digital A/V signals in a captured content segment of the storage memory, the storage memory also selectively coupled to the receivers to selectively receive and store the digital A/V signals in a full content segment of the storage memory, the storage memory further including an instruction segment for recording operating instructions;

a processor connected to the storage memory and each receiver; and

a user input device connected to the processor and the storage memory by which to supply user-selected search criteria and user-selected response criteria to the storage memory and the processor;

the processor responding to the operating instructions recorded in the instruction segment of the storage memory and the search and response criteria to operatively;

cause each receiver to receive the A/V content from each of the different A/V content sources in a scan sequence;

send the corresponding digital A/V signals supplied by each receiver from each of the different A/V content sources during the scan sequence to the content capture unit to enable the content capture unit to extract the captured portion of the A/V content from each of the different A/V sources during the scan sequence;

store the extracted captured portions of A/V content for each of the different A/V content sources in the captured content segment of the storage memory;

search through the extracted captured portions of A/V content in the captured content segment of the storage memory in accordance with the search criteria;

locate a match between the search criteria and at least one of the stored extracted captured portions of A/V content to thereby identify and select an A/V source containing A/V content correlated to the search criteria;

controlling each receiver and the storage memory to execute one of a plurality of different response actions in response to the user-selected response criteria, the response actions including recording in the full content portion of the storage memory the corresponding digital A/V signals from the selected A/V source for subsequent use by the display circuit to create a display, and supplying the corresponding digital A/V signals from the selected A/V source to the display circuit to create an instantaneous display of the AV content from the selected AV source substantially simultaneously with the continuous supply of A/V content from the selected AV content source.

2. A device as defined in claim 1, wherein:

the CC data slicer receives the video portion of the digital A/V signals and captures and extracts the CC content from the video portion;

the digitizing audio capturing unit receives the audio portion of the digital A/V signals and captures and extracts the audio content from the audio portion; and

the video still image capture unit receives the video portion of the digital A/V signals and captures and extracts the video still image part of the video portion.

3. A device as defined in claim 1 wherein the user-selected search criteria comprises textual criteria related to the CC content captured by the CC data slicer, audio criteria related to the audio content captured by the digitizing audio capture unit, or video criteria related to the video still image captured by the video still image capture unit.

4. A device as defined in claim 1, wherein the response actions further include:

causing a visible alert from the display circuit;

causing an audible alert from display circuit;

displaying the CC content from the selected A/V source;

capturing the video still image from the selected A/V source; and

recording the CC content part from the selected A/V source in the storage memory.

5. A device as defined in claim 1, wherein:

the sources of A/V content comprise a DVD source, a broadcast programming source, and a web programming site.

6. A device as defined in claim 1, wherein:

the sources of A/V content include at least all of a DVD source, a broadcast programming source, and a web programming site;

one of the receivers comprises a DVD receiver for receiving DVD content from the DVD source;

one of the receivers comprises a TV tuner for receiving broadcast programming from the broadcast programming source; and

one of the receivers comprises a web browser for receiving web programming from the web programming site.

7. A device as defined in claim 6, wherein:

the one receiver which includes the DVD receiver includes a DVD decoder within the DVD receiver;

the one receiver which includes the TV tuner includes a video analog-to-digital converter (ADC) and the audio ADC; and

the one receiver which includes the web browser includes a web browser program which operates the web browser.

8. A device as defined in claim 1, wherein the display circuit further comprises:

a PAL/NTSC video encoder connected to at least one receiver.

9. A device as defined in claim 1, wherein the display circuit further comprises:

progressive monitor video encoding circuitry including a de-interlacing unit connected to one receiver, a video scaler connected to the de-interlacing unit, and a video digital-to-analog converter (DAC) connected to the video scaler.

10. A method of processing audio/visual (A/V) content in an A/V device, comprising:

providing a plurality of A/V channels each of which supplies different A/V content simultaneously and continuously with each of the other A/V channels;

receiving an A/V signal describing the A/V content from each A/V channel;

supplying the A/V signal from each A/V channel in a scan sequence which encompasses all of the plurality of A/V channels;

capturing a portion of the A/V signal from each A/V channel during the scan sequence;

selecting the captured portion of the A/V signal as one of a close caption (CC) portion, an audio portion, or a video still image storing the captured portion of the A/V signal;

specifying search criteria;

specifying response criteria;

searching through the captured portions of the A/V signals from each of the A/V channels in accordance with the search criteria;

locating a match between the search criteria and at least one of the captured portions of the A/V signals from each of the A/V channels to thereby identify and selected the A/V channel providing the A/V signals whose captured portion matches the search criteria; and

executing a response action in response to the response criteria, the response actions including one of recording the A/V signals from the selected A/V channel for subsequent use in creating a display of the A/V content from the corresponding A/V signals from the selected A/V channel or supplying the A/V signals from the selected A/V channel and creating an instantaneous display of the A/V content from the corresponding A/V signals from the selected A/V channel.

11. A method as defined in claim 10, wherein the user search criteria comprises textual criteria related to the CC portion of the A/V signal, audio criteria related to an audio portion of the A/V signal, or video criteria related to the video still image of the A/V signal.

12. A method as defined in claim 11, wherein the video criteria constitutes a predetermined tolerance of differences between the video still image and characteristics of a desired image.

13. A method as defined in claim 11 further comprising:

specifying save criteria for storing the captured portions, the save criteria are comprising at least one of a frequency for storing of the CC portion, a frequency for locating a match, predetermined amount of time of CC content stored before and/or after locating a match, or a time-based order of matched textual criteria.

14. A method as defined in claim 10, wherein the response actions further include at least one of providing a visible alert providing an audible alert;

displaying the CC portion from the corresponding A/V signal from the selected A/V channel;

displaying the video still imaging of the A/V signal from the selected A/V channel in which the match was located.

15. A method as defined in claim 14, further comprising:

setting a priority for at least one of the response criteria and the search criteria.

16. A method as defined in claim 10, wherein the captured portion of the A/V signal for each A/V channel comprises CC content, and the method further comprises:

displaying the CC content of the selected A/V channel for viewing.

17. A method as defined in claim 16, further comprising:

displaying the CC content of more than one A/V channel for simultaneous viewing.

18. A method as defined in claim 16, further comprising:

receiving the CC content from the selected A/V channel at a first rate; and

displaying the CC content at a second rate different from the first rate.

19. A method as defined in claim 10, wherein the plurality of A/V channels includes at least one of a DVD source, a broadcast programming source, or a web programming site.

20. A method as defined in claim 10, wherein the plurality of A/V channels include at least all of a DVD source, a broadcast programming source, and a web programming site, and the method further comprises:

receiving DVD content from the DVD source as the A/V signal;

receiving broadcast programming from the broadcast programming source as the A/V signal; and

receiving web programming from the web programming site as the A/V signal.

21. A method as defined in claim 20, further comprising:

searching the captured portion of the A/V signal of at least one broadcast programming source and at least one DVD source simultaneously.

22. A method as defined in claim 20, wherein the web programming includes a live A/V broadcast with CC content.

23. A method as defined in claim 20, wherein the broadcast programming includes the CC portion, and the method further comprises:

displaying karaoke features for the CC portion of the broadcast programming.

24. A method as defined in claim 10, further comprising:

displaying the A/V signal of the selected A/V channel through video encoding circuitry which is a selected from either a PAL/NTSC video encoder or a progressive monitor video encoding circuitry.

25. A method as defined in claim 24, wherein the A/V signal is digital, and the method further comprises:

upon selecting the progressive monitor video encoding circuitry, the displaying is achieved de-interlacing the A/V signal,

scaling the de-interlaced A/V signal, and

converting the de-interlaced A/V signal from a digital signal to an analog signal.

26. A method as defined in claim 10, wherein the A/V device comprises a digital versatile disk (DVD) player for playing back DVD content on a display, and the DVD player comprises:

a video encoding circuit comprising a digital video input, a video signal converter and a display signal output, the digital video input receiving a digital video signal, the video signal converter converting the digital video signal into a display signal, and the display signal output providing the display signal to the display;

a source of compressed DVD content, the source of compressed DVD content constituting one of the A/V channels;

a DVD decoder comprising a DVD input connected to the DVD content source and a DVD output connected to the digital video input of the video encoding circuit, the DVD input receiving the compressed DVD content, and the DVD output providing decoded DVD content decoded from the compressed DVD content; and

a broadcast television (TV) tuner comprising a broadcast input and a program output, the broadcast input receiving multiple broadcast TV programs, each broadcast TV program constituting one of the A/V channels, and the program output connected to the digital video input of the video encoding circuit and providing a selected one of the multiple broadcast TV programs to the video encoding circuit;

and wherein;

the video encoding circuit converts either the selected TV program or the decoded DVD content into the display signal.

27. A method as defined in claim 26, wherein the DVD player further comprises:

a second broadcast TV tuner comprising a broadcast input and a program output, the broadcast input receiving the multiple broadcast TV programs, and the program output connected to the digital video input of the video encoding circuit and providing a second selected one of the multiple broadcast TV programs to the video encoding circuit;

and wherein;

the video encoding circuit converts the selected TV program first aforesaid, the second selected TV program or the decoded DVD content into the display signal.

28. A method as defined in claim 10, wherein the A/V device comprises a digital versatile disk (DVD) player for playing back a digital video signal on a conventional television or progressive monitor, the DVD player comprising:

a source of the digital video signal derived from the A/V signal of the selected A/V channel, the digital video signal being interlaced and having a source resolution; and

a video encoding circuit comprising a digital video input, a video encoder, a de-interlacing unit, a video scaler, a video digital-to-analog converter (DAC) and a display signal output, the digital video input connected to the video encoder and the de-interlacing unit, the de-interlacing unit connected to the video scaler, the video scaler connected to the video DAC, and the video DAC connected to the display signal output;

and wherein;

the digital video input receives the digital video signal and provides the digital video signal to a selected one of either the video encoder or the de-interlacing unit;

the video encoder encodes the digital video signal into a conventional television signal having a first display resolution and provides the conventional television signal to the conventional television; and

the de-interlacing unit de-interlaces the digital video signal into a progressive video signal, the video scaler scales the progressive video signal into a scaled video signal having a second display resolution, the video DAC converts the scaled video signal into a display signal, and the display signal output provides the display signal to the progressive monitor.

29. A method as defined in claim 28, wherein with respect to the DVD player:

the first display resolution is equal to or less than the source resolution; and

the second display resolution is equal to or greater than the source resolution.

30. A method as defined in claim 28, wherein:

the source of the digital video signal comprises either a DVD source or a conventional broadcast television source.

31. A method as defined in claim 10, wherein the A/V device comprises a digital versatile disk (DVD) player for playing back the A/V signal from the selected A/V channel, the DVD player comprising:

a source of the A/V signal, the A/V signal comprising close caption (CC) content, audio content and video content, the source of the A/V signal being one of the plurality of A/V channels;

at least one content capture unit coupled to the source of the A/V signal, the content capture unit receiving at least a portion of the A/V signal and capturing part of the A/V signal, and each content capture unit comprising at least one of;

a CC data slicer;

an audio capture unit;

or

a video still image capture unit;

a captured content storage unit coupled to the content capture unit and comprising memory storage space, the memory storage space receiving the captured part of the A/V signal from the content capture unit and storing the captured part of the A/V signal.

32. A method as defined in claim 31, wherein:

the source of A/V signals comprise a DVD source and a conventional broadcast television source.

33. A method as defined in claim 32, wherein:

the sources of A/V signal is further comprise a World Wide Web A/V source.

34. A method as defined in claim 10, wherein the A/V device comprises a programmable storage device readable by a machine and which tangibly embodies a program of instructions executable by the machine to process A/V content by executing the following:

providing the plurality of A/V channels;

receiving the A/V signal from each A/V channel;

capturing a portion of the A/V signal, wherein the portion of the A/V signal comprises one of a CC portion, an audio portion, a video still image; and

storing the captured portion of the A/V signal.

35. A method as defined in claim 34, wherein the programmable storage device:

scans through the plurality of A/V channels in sequence;

receives the A/V signal from each of the A/V channels during the sequence of scanning;

captures the portion of the A/V signal from each of the A/V channels; and

stores the captured portion of the A/V signal from each of the A/V channels.

36. A method as defined in claim 35, wherein the programmable storage device further:

searches through the captured portions of the A/V signals from each of the A/V channels to locate the match with the search criteria.

37. A method as defined in claim 36, wherein the search criteria comprises at least one of textual criteria related to the CC portion of each A/V signal, audio criteria related to an audio portion of each A/V signal, or video criteria related to the video still image of each A/V signal.

38. A method as defined in claim 35, wherein the captured portion of the A/V signal for each A/V channel comprises CC content, and the method further comprises:

displaying the CC content of each A/V channel for viewing.

39. A method as defined in claim 34, wherein the method further comprises:

using at least two different ones of a DVD source, a broadcast programming source, and a web programming site as the plurality of A/V channels.

40. A method for processing A/V content in an A/V device comprising the steps of:

providing an A/V channel;

receiving an A/V signal from the A/V channel;

capturing a portion of the A/V signal, wherein the portion of the A/V signal comprises a CC portion, an audio portion, a video still image, or a combination thereof;

storing the captured portion of the A/V signal;

providing one or more A/V channels comprising a DVD source, a broadcast programming source, and a web programming site;

receiving DVD content from the DVD source, receiving broadcast programming from the broadcast programming source, receiving web programming from the web programming site, or a combination thereof; and

wherein;

the DVD content includes subtitle content which is played back at a first rate simultaneously with playback of the A/V content, the method further comprising;

capturing the subtitle content at a second rate that is faster than the first rate;

indexing the captured subtitle content; and

searching for matches within the indexed subtitle content.