Method and apparatus for multiplexing audio program channels from one or more received broadcast streams to provide a playlist style listening experience to users

• US 20090320075A1
• Filed: 06/19/2008
• Published: 12/24/2009
• Est. Priority Date: 06/19/2008
• Status: Active Grant

• Current Assignee: Sirius XM Radio Inc. (Liberty Media Corporation)
• Original Assignee: XM Satellite Radio Incorporated (Liberty Media Corporation)
• Inventors: Marko, Paul D.
• Granted Patent: US 8,223,975 B2
• Time in Patent Office: Days
• US Class Current: 725/56
• CPC Class Codes: H04H 20/28 Arrangements for simultaneous broadcast of plural pieces of information
• CPC Class Codes: H04H 20/40 Arrangements for broadcast specially adapted for accumulation-type receivers
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04H 20/74 of satellite networks
• CPC Class Codes: H04H 40/27 specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
• CPC Class Codes: H04H 40/90 specially adapted for satellite broadcast receiving
• CPC Class Codes: H04H 60/91 Mobile communication networks for accessing the Internet H04H60/85

Abstract

A method and apparatus are provided for generating a personalized radio channel playlist by time division multiplexing songs from multiple received channels from one or more broadcast source streams in a queue. Users can specify favorite channels for building their personal playlists, or multiple default playlist channels can be provided by genre. Navigation tools permit users to see upcoming songs in their playlist queue and skip ahead and backward. Thumbs up/down buttons on the radio receiver permit entering a song or artist being played back into a favorites list that is used to search all channels for matches or a banned list used to block songs from future playlists. If matches are found, the channel carrying the favorite is extracted and added to the playlist. Channel searching for matches involves monitoring real-time song and artist labels for all channels carried in a separate data channel (e.g., Broadcast Information Channel (BIC)). Segments on the playlist are dynamically truncated to reduce the average time each segment is played to facilitate preview of playlist segments. Preview times can vary depending on the size of the playlist or number of channels used. During a preview of a segment, users can opt to listen to the full song or back up in the playlist to listen to a previous song. Connectivity options and web interfaces are provided to facilitate transfer and sharing of customization parameters for personalized radio configuration.

Claims

1. A method of generating a playlist from one or more received broadcast streams comprising:

receiving at least one broadcast stream comprising a plurality of multiplexed audio program channels, each of the audio program channels comprising audio segments for reception by all receivers configured to receive the at least one broadcast stream;

selecting a set of channels from among a plurality of preconfigured sets of channels, the preconfigured sets of channels comprising selected ones of the audio program channels in the broadcast stream;

simultaneously extracting each of the audio program channels in the selected set of channels from the received broadcast stream; and

generating a playlist by contemporaneously multiplexing and storing the audio segments in the extracted set of channels as they are received.

2. A method as claimed in claim 1, wherein the broadcast stream provides several genres of audio programming and several audio program channels for each of the genres, and the selected set of channels comprises a plurality of audio program channels containing audio segments corresponding to the same genre.

3. A method as claimed in claim 2, wherein the genres of audio programming comprise music genres.

4. A method as claimed in claim 1, wherein the broadcast stream provides several genres of audio programming and several audio program channels for each of the genres, and the selected set of channels comprises a plurality of audio program channels containing audio segments corresponding to at least two genres.

5. A method as claimed in claim 4, wherein the at least two genres are selected from the group consisting of music, news, sports, comedy, and talk shows.

6. A method as claimed in claim 1, wherein generating a playlist comprises listing the audio segments in the extracted set of channels for playback in the order of the respective start times of the audio segments in the broadcast stream.

7. A method as claimed in claim 6, wherein generating a playlist comprises storing the audio segments from the extracted set of channels from their respective start times to allow playback from the beginning of each of these audio segments, and further comprising:

providing a user with navigation control inputs to scroll forward and backward in the playlist to see the currently stored audio segments, and to select and playback the audio segments in the playlist, to expose a user to the audio segments in the extracted set of channels even when they are being presented simultaneously in the received broadcast stream.

8. A method as claimed in claim 7, further comprising automatically playing back the audio segments in the playlist in a preview mode by playing back truncated versions of the audio segments.

9. A method as claimed in claim 8, wherein providing a user with navigation control inputs comprises providing a user with a control input to select and playback a full length version of one of the audio segments.

10. A method as claimed in claim 7, wherein generating a playlist further comprises buffering the multiplexed audio segments on a first in first out (FIFO) basis and writing over the stored audio segments as new audio segments are received via the at least one broadcast stream.

11. A method as claimed in claim 1, wherein generating a playlist comprises:

buffering the audio segments from the extracted set of channels on a first-in-first-out (FIFO) basis; and

managing buffer capacity by overwriting the audio segments in the playlist on a FIFO basis using the audio segments in the set of channels that are currently being extracted from the received broadcast stream.

12. A method as claimed in claim 1, wherein generating a playlist comprises:

buffering the audio segments from the extracted set of channels on a first-in-first-out (FIFO) basis; and

managing buffer capacity by discarding new audio segments in the set of channels that are currently being extracted from the received broadcast stream when the buffer reaches a predetermined threshold of content waiting to be consumed.

13. A method as claimed in claim 1, further comprising delaying storing of the audio segments into the playlist for a selected period of time following their reception to prevent audio segments comprising any of disc jockey chatter, commercials and undesired content from being stored in the playlist.

14. A method as claimed in claim 1, further comprising not storing an audio segments into the playlist for a selected period of time or for a selected number of audio segments after an equivalent audio segment is determined to already exist in the playlist.

15. A method as claimed in claim 1, further comprising previewing audio segments in the playlist by playing back a truncated version of each of the audio segments.

16. A method as claimed in claim 15, further comprising varying the duration of the truncated versions of the audio segments depending on at least one condition selected from the group consisting of the number of audio segments stored in the playlist, a number of fast forward operations selected by the user during preview, and the rate of the at least one broadcast stream.

17. A method as claimed in claim 15, further comprising displaying titles of the audio segments in the playlist and a countdown timer indicating the amount of time left during playback of a truncated version of one of the audio segments.

18. A method as claimed in claim 15, further comprising:

generating an audible alert at a selected time before the end of playback of a truncated version of one of the audio segments; and

providing a user with a control input to select and playback a full length version of the audio segment being played back before the end of its preview.

19. A method as claimed in claim 1, further comprising playing back a full length version of a selected audio segment in response to a user input.

20. A method as claimed in claim 1, wherein receiving the at least one broadcast stream comprises receiving a high speed broadcast stream having a baseband rate that is faster than a real-time baseband audio stream rate.

21. A method as claimed in claim 1, wherein receiving the at least one broadcast stream comprises receiving at least one other stream selected from the group consisting of a satellite radio broadcast stream, a high speed high definition (HD) radio stream, a real-time HD radio stream, a WiFi stream, and wireless stream, the other stream comprising at least one audio program channel having audio segments, and wherein selecting a set of channels comprising an audio program channel from the other stream.

22. A method as claimed in claim 1, further comprising:

displaying at least one of a title, artist and channel identifier for each of the audio segments in the playlist; and

providing a user with navigation control inputs to scroll forward and backward in the playlist to see the currently stored audio segments, and to select and playback the audio segments in the playlist.

23. A method as claimed in claim 22, further comprising providing a user with a user control input to select and store one of the audio segments in the playlist to a favorite song file in a non-volatile memory.

24. A method as claimed in claim 1, wherein receiving the at least one broadcast stream comprises receiving a satellite digital audio radio service (SDARS) stream.

25. A method as claimed in claim 24, wherein receiving the at least one broadcast stream further comprises receiving a high definition radio broadcast stream.

26. A method as claimed in claim 1, further comprising selecting a set of channels based on user inputs indicating preferred audio program channels, and extracting the user selected set of channels for generating the playlist.

27. A method as claimed in claim 26, further comprising storing playlist configuration data comprising at least one of a user selected set of channels, and a playlist of audio segments generated using a user selected set of channels.

28. A method as claimed in claim 27, further comprising transferring the playlist configuration data between at least two playback devices.

29. A method as claimed in claim 1, further comprising inserting selected content into the playlist among the audio segments from the extracted set of channels.

30. A method as claimed in claim 29, wherein the selected content comprises commercials.

31. A method as claimed in claim 30, further comprising providing different tiers of subscription service to receive the at least one broadcast stream based on the amount of selected content that is inserted into the playlists.