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• 5,175,769 [International: WO9302446] Method for Time-Scale modification of signals December
  29, 1992: A time-domain based technique for performing Time-Scale modification of audio signals in an extremely efficient manner. For speech signals, the technique changes the perceived speaking rate without introducing noise, frequency changes, or other artifacts; while preserving speaker identity, intonation, and normal pitch dynamics.
• 6,370,688 Method and apparatus for server broadcast of time-converging multi-media streams
  April 9, 2002: Technique and hardware for increasing the efficiency and capacity of media servers which provides unicast response-time then transitions users to multicast delivery mode for greater efficiency.
• 6,374,225 Method and apparatus for Creation of Listener Interest Filtered Works
  April 16, 2002: Technique and apparatus for inferring listener interest and aptitude from observations of the user-selected playback speeds during media presentations on apparatus with variable speed playback (also known as Time-Scale modification) capability.
• 6,598,228 Method and apparatus for controlling time-scale modification during multi-media broadcasts
  July 22, 2003: An embodiment of the present invention is a method for presentation of information received from a broadcaster which comprises the steps of: (a) receiving broadcast information; (b) receiving guidance information relating to presentation of the broadcast information; (c) analyzing the guidance information to determine a presentation rate; and (d) presenting the information at the presentation rate.
• 6,625,655 Method and apparatus for continuous playback of streamed media
  September 23, 2003: An embodiment of the present invention is an apparatus for preparing streaming media such as an audio or audio-visual work for playback which comprises: (a) a buffer which stores data corresponding to the streaming media; (b) a buffer monitor which determines an amount of data stored in the buffer; (c) a rate determiner, in response to output from the buffer monitor, that determines a playback rate; and (d) a time-scale modification system, responsive to the playback rate, that time-scale modifies at least a portion of the data in the buffer. In a further embodiments, a playback system plays back the time-scale modified data as a portion of the streaming media.
• 6,625,656 Method and apparatus for continuous playback of media
  September 23, 2003: An embodiment of the present invention is an apparatus for preparing media for playback which comprises: (a) a buffer which stores data corresponding to the media; (b) a time-scale modification system that time-scale modifies data output from the buffer at a playback rate; and (c) a rate determiner that determines the playback rate over an interval to control the amount of data in the buffer.
• 6,791,550 Management of presentation time in a digital media presentation system with variable rate presentation capability
  September 14, 2004: Method for managing Presentation Time in a digital rendering system for presentation of temporally-ordered data when the digital rendering system includes a Variable Rate Presentation capability. In a particular, one embodiment of the present invention is a method for converting Presentation Time to Data Time, and for reporting Presentation Time when only one time can be returned.
• 6,801,888 Method and apparatus to prepare listener-interest-filtered works
  October 5, 2004: An embodiment of the present invention is a method for generating a listener-interest-filtered work for an audio or audio-visual work, which method includes steps of: (a) generating one or more average speed contours for one or more audio or audio-visual works for one or more categories of users; (b) converting the one or more average speed contours to one or more conceptual speed association data structures; and forming a listener-interest-filtered conceptual speed association data structure from the one or more conceptual speed association data structures.
• 6,934,759 Method and apparatus for user-time-alignment for broadcast works
  August 23, 2005: An embodiment of the present invention is a method for broadcasting information from a server to a client which includes the steps of: (a) broadcasting information at predetermined starting times; (b) receiving a request for the information from the client at an arrival time different from the predetermined starting times; and (c) transmitting a time-scale modified version of the information to the client for a period of time.
• 7,043,433 [International: WO0120596] Method and apparatus to determine and use audience affinity and aptitude
  September 14, 2004: Embodiments of the present invention provide method and apparatus for determining audience affinity and/or aptitude in portions of media works and for developing information that represent measures of the audience affinity and/or aptitude. Further embodiments of present invention provide method and apparatus for utilizing the information to create altered media works and/or to present the altered media works to an audience. One embodiment of the present invention is a method for inferring audience affinity or aptitude with regard to content or properties of portions of a media work which includes: (a) presenting the media work to an audience; (b) obtaining user input regarding presentation rates for the portions of the media work; (c) correlating content or properties of the portion with the presentation rates; and; (d) associating audience affinity or aptitude with the correlated content or properties.
• 7,100,188 Method and apparatus for controlling time-scale modification during multi-media broadcasts
  August 29, 2006: One embodiment of the present invention is a method for presenting broadcast information that comprises steps of: (a) receiving broadcast information; (b) receiving guidance information relating to presentation of the broadcast information; (c) paying for a capability to alter or override at least a portion of the guidance information; (d) receiving user input to alter or override at least some of the guidance information; (e) analyzing the guidance information, the capability, and the user input to provide one or more presentation rates; and (f) presenting the information at the one or more presentation rates.
• 7,299,184 [International: WO0022611] Method and apparatus to prepare listener-interest-filtered works
  November 20, 2007: An embodiment of the present invention is a method for generating a listener-interest-filtered work for an audio or audio-visual work, which method includes steps of: (a) generating one or more average speed contours for one or more audio or audio-visual works for one or more categories of users; (b) converting the one or more average speed contours to one or more conceptual speed association data structures; and forming a listener-interest-filtered conceptual speed association data structure from the one or more conceptual speed association data structures.