1
Patrick Sheehan: Network virtual memory for a cable television settop terminal. General Instrument Corporation of Delaware, Volpe and Koenig P C, July 14, 1998: US05781226 (212 worldwide citation)

The present invention comprises a memory management system employed in a settop terminal which utilizes memory available at the headend of a CATV system through a bidirectional CATV network to augment the memory resident within the settop terminal. The system includes a memory management unit that m ...


2
Mark K Eyer, Paul Moroney: Method and apparatus for incremental delivery of access rights. General Instrument Corporation of Delaware, Barry R Lipsitz, January 16, 1996: US05485577 (175 worldwide citation)

Incremental delivery of authenticated access rights to an access control processor is provided. Subgroups of the access rights are communicated to the processor in a plurality of messages. The subgroups are stored in different data banks within the processor, and validity designations associated wit ...


3
Mark K Eyer, Zicheng Guo: Method and apparatus for providing an interactive guide to events available on an information network. General Instrument Corporation of Delaware, Barry R Lipsitz, Ralph F Hoppin, September 1, 1998: US05801753 (171 worldwide citation)

Apparatus and methods are provided for implementing an interactive program guide on an information network. A plurality of database pages are communicated over the information network. Each page corresponds to a time slot over which events are available on the network. Schedule data for each event t ...


4
Chris Hoogenboom, Paul Moroney: Acquisition of desired data from a packetized data stream and synchronization thereto. General Instrument Corporation of Delaware, Barry R Lipsitz, Ralph F Hoppin, May 14, 1996: US05517250 (142 worldwide citation)

A video decompression processor acquires video data for a desired service from a packetized data stream. The data stream includes transport packets carrying different components of the desired service. Each component is identified by a unique packet identifier (PID). One of the components includes a ...


5
Chris Hoogenboom: Syntax parser for a video decompression processor. General Instrument Corporation of Delaware, Barry R Lipsitz, Ralph F Hoppin, October 15, 1996: US05566089 (135 worldwide citation)

A video syntax parser is provided for a video decompression processor. A compressed bitstream is examined until a start code is located. The start code is decoded to enable a particular parser state corresponding thereto to be initiated. The parser state is communicated to a plurality of subsystems ...


6
Mark K Eyer, Allen Shumate: Method and apparatus for impulse purchasing of packaged information services. General Instrument Corporation of Delaware, Barry R Lipsitz, Ralph F Hoppin, September 23, 1997: US05671276 (134 worldwide citation)

Impulse purchasing is provided for packages of services offered to consumers via an information network. A plurality of services is offered for individual purchase on an impulse basis via a user terminal coupled to the information network. The plurality of services is offered for purchase as a packa ...


7
Ray Nuber, Paul Moroney: Error detection and recovery for high rate isochronous data in MPEG-2 data streams. General Instrument Corporation of Delaware, Barry R Lipsitz, April 21, 1998: US05742623 (134 worldwide citation)

Error recovery is provided for isochronous data ("isodata") obtained from a data stream. Isodata transport packets are monitored to locate isodata presentation time stamps (PTSs). The presentation of isodata from a buffer is synchronized to a system time clock (STC) using timing information derived ...


8
Chris Hoogenboom, Bao Vuong: Pixel interpolation filters for video decompression processor. General Instrument Corporation of Delaware, Barry R Lipsitz, June 10, 1997: US05638128 (129 worldwide citation)

A method and apparatus are disclosed for interpolating pixels to obtain subpels for use by a video decompression processor. A prediction area is defined from which subpels are necessary to decompress a portion of a video image. Instead of reading all of the pixels from the prediction area and then p ...


9
Ray Nuber, Paul Moroney, G Kent Walker: Acquisition and error recovery of audio data carried in a packetized data stream. General Instrument Corporation of Delaware, Barry R Lipsitz, December 30, 1997: US05703877 (116 worldwide citation)

Audio data is processed from a packetized data stream carrying digital television information in a succession of fixed length transport packets. Some of the packets contain a presentation time stamp (PTS) indicative of a time for commencing the output of associated audio data. After the audio data s ...


10
Paul Moroney, Mark S Schmidt: Method and apparatus for modifying a transport packet stream to provide concatenated synchronization bytes at interleaver output. General Instrument Corporation of Delaware, Barry R Lipsitz, June 23, 1998: US05771239 (107 worldwide citation)

An MPEG transport packet stream or the like is modified to provide concatenated synchronization bytes at an output of an interleaver receiving the modified packet stream. A conventional sync byte located in a first transport packet is replaced with a first substitute sync byte. A conventional sync b ...