1
Nigel Seth Smith, Cameron Bates, Samson Lim, William van Rassel, Robert Yoneda, Keith Lucas: Communications format for a subscription television system permitting transmission of individual text messages to subscribers. Scientific Atlanta, Banner Birch McKie & Beckett, December 26, 1989: US04890321 (368 worldwide citation)

A subscription television system in which individual decoders are enabled to receive individually addressed messages is disclosed. The composite signal, including video and teletext, also comprises addressed packets which are detected by decoders and which indicate that a message addressed to a part ...


2
Nigel Seth Smith, Cameron Bates, Samson Lim, William van Rassel, Robert Yoneda, Keith Lucas: Communication of individual messages to subscribers in a subscription television system. Scientific Atlanta, Banner Birch McKie & Beckett, May 9, 1989: US04829569 (364 worldwide citation)

A subscription television system in which individual decoders are enabled to receive individually addressed messages is disclosed. The composite signal, including video and teletext, also comprises addressed packets, which are detected by decoders and which indicate that a message addressed to a par ...


3
Anthony J Wasilewski, Keith Lucas: System and method for transmitting a plurality of digital services. Scientific Atlanta, Woodcock Washburn Kurtz Mackiewicz & Norris, March 21, 1995: US05400401 (329 worldwide citation)

A plurality of digital services are carried in a multiplex data stream to a plurality of remote locations. The multiplex data stream comprises a continuous sequence of frames. Each frame comprises two consecutive fields, and each field comprises a plurality of lines. A first group of the lines in ea ...


4
Keith Lucas: Information display scheme for subscribers of a subscription television system. Scientific Atlanta, Banner Birch McKie & Beckett, December 5, 1989: US04885775 (253 worldwide citation)

An information display scheme for displaying subscriber unique information to subscribers of a subscription communications system. The system comprises template page receiving means coupled to the communications system for receiving a template page as a format for the subscriber unique information, ...


5
Nigel Seth Smith, Cameron Bates, Samson Lim, William van Rassel, Robert Yoneda, Keith Lucas: Method and apparatus for communication of video, audio, teletext, and data to groups of decoders in a communication system. Scientific Atlanta, Banner Birch McKie & Beckett, September 12, 1989: US04866770 (131 worldwide citation)

A communication system enabling transmission of individual subscriber teletext messages, audio and video to individual subscribers and permitting group communications of audio, video, teletext and data information from a single central subscriber location, such as a corporate head office to a plural ...


6
John D Lowry, Keith Lucas: Method and apparatus for creating encrypted and decrypted television signals. Scientific Atlanta, Banner Birch McKie & Beckett, February 10, 1987: US04642688 (129 worldwide citation)

A method and apparatus for creating a television signal and encrypting or decrypting the signal at the same time. Luminance and chrominance information are received by the apparatus and stored in separate television scan line stores. The stored liminance and chrominance information is read out from ...


7
Nigel Seth Smith, Cameron Bates, Samson Lim, William van Rassel, Robert Yoneda, Keith Lucas: Method for controlling copying of protected information transmitted over a communications link. Scientific Atlantic, Banner Birch McKie & Beckett, December 26, 1989: US04890319 (100 worldwide citation)

A subscription television system for distributing program material protected by copyright to subscribers comprises a transmitter including a data insertion circuit for inserting a control bit in a transmitted signal comprising other control data and the protected program material. A receiver of the ...


8
Paul D Israelsen, Keith Lucas: Motion filter for digital television system. Scientific Atlanta, Woodcock Washburn Kurtz Mackiewicz & Norris, August 17, 1993: US05237413 (61 worldwide citation)

A method and apparatus for processing fields of a video signal that are to be combined into a frame, compressed and communicated over a digital communications system. The processing technique increases the spatial correlation between pixels at a cost of slightly reduced resolution in areas of the fr ...


9
Paul D Israelsen, Keith Lucas: Method and apparatus for transforming between fixed-rate vector quantized data and variable rate vector quantized data. Scientific Atlanta, Woodcock Washburn Kurtz Mackiewicz & Norris, July 27, 1993: US05231485 (49 worldwide citation)

A method and apparatus is disclosed wherein fixed rate vector quantized data is transmitted from a first location to a second location via a first medium. The fixed rate vector quantized data is received at the second location and transformed to variable rate vector quantized data. Then, the transfo ...


10
Keith Lucas: Error detection and concealment using predicted signal values. Scientific Atlanta, Banner Birch McKie & Beckett, January 12, 1988: US04719642 (46 worldwide citation)

The system transmits blocks of N signal values preceded by block code words which are used at the receiver to detect errors. In the transmitter, the digital value of the intelligence signal being transmitted is sent to a predictor, a comparator, and an N-word delay line. The predictor estimates the ...