1
Jonathan J Stone, Terence R Hurley: Compression of video signals. Sony Broadcast & Communications, William S Frommer, Alvin Sinderbrand, June 29, 1993: US05223926 (150 worldwide citation)

A digital video signal is compressed by spatial sub-band filtering to form data sets constituting respective sub-bands of the two-dimensional spatial frequency domain. The data sets for a field or frame are stored. A first sequencer controls writing, in accordance with a desired sequence, of the sto ...


2
Jonathan M Soloff, Jonathan J Stone, Terence R Hurley: Data compression apparatus and method. Sony United Kingdom, William S Frommer, Alvin Sinderbrand, November 9, 1993: US05260781 (80 worldwide citation)

A data compression system in which decorrelated data is fed to an entropy encoder (20) in batches having an internal monotonic decrease in average information content from start to end. This results in longer zero runs and more rapid attainment of end of block codes. A data sequencing circuit (18) c ...


3
Terence R Hurley, Jonathan J Stone, James H Wilkinson: Storage of video signals. Sony Broadcast & Communications, William S Frommer, Alvin Sinderbrand, July 27, 1993: US05231487 (35 worldwide citation)

Apparatus for storing a video signal includes a signal compression arrangement constituted by a spatial two-dimensional sub-band filtering arrangement that filters a digital video signal to form data sets constituting respective sub-bands of the two-dimensional spatial frequency domain, a quantizer ...


4
Ahmed Sadjadian, Terence R Hurley, Simon M Manze: Sampling frequency conversion using interrupt control. Sony United Kingdom, William S Frommer, Alvin Sinderbrand, July 11, 1995: US05432511 (18 worldwide citation)

A sampling frequency converter having an oversampler for operating on input data supplied to the converter, a signal processor for controlling operation of the sampling frequency converter and for generating oversampled output data from the oversampled input data, and a downsampler for generating ou ...


5
Jonathan J Stone, Terence R Hurley, James H Wilkinson: Compression of video signals. Sony Broadcast & Communications, William S Frommer, Alvin Sinderbrand, May 25, 1993: US05214502 (16 worldwide citation)

To enable a digital composite color video signal (NTSC or PAL) to be compressed directly, that is without dividing it into its components and compressing the components separately, the digital composite color video signal is decorrelated, for example by spatial sub-band filtering, to form data sets, ...


6
Richard Morcom, Terence R Hurley: Downsampling and prefilter implementation in television systems. Independent Broadcasting Authority, Watson Cole Grindle & Watson, October 13, 1987: US04700345 (11 worldwide citation)

A filter for filtering analog or digital samples using two sections, each including a multiplier stage having a plurality of multiplier sections, each with a respective output but a common input for applying a plurality of coefficients to a sample input to the multiplier stage, and a delay and summi ...


7
Jonathan M Soloff, Jonathan J Stone, Terence R Hurley, James H Wilkinson: Sub band filters. Sony United Kingdom, William S Frommer, Alvin Sinderbrand, December 7, 1993: US05268905 (10 worldwide citation)

A sub-band filter system in which the frequency separated data is multiplexed together at the output of each filter stage. The stream of multiplexed data produced can have a block-by-block format or a sample-by-sample format. In the latter case, the filtering can be effected by a finite impulse resp ...


8
Ahmad Sadjadian, Terence R Hurley: Method of and apparatus for deriving a key signal from a digital video signal. Sony Corporation, Sony United Kingdom, William S Frommer, Alvin Sinderbrand, July 23, 1996: US05539475 (10 worldwide citation)

In deriving a key signal for a digital mixer from an input video signal, most values of the key signal are derived by a clip and gain circuit. However, in the special case where the normalized product values for adjacent pixels lie on opposite sides of the upper and lower bounds, the following equat ...


9
Clive H Gillard, James H Wilkinson, Michael J Ludgate, Jonathan M Soloff, Rajan Bhandari, Terence R Hurley: Digital signal recording and/or reproducing apparatus that evenly distributes field data across tracks. Sony Corporation, Sony United Kingdom, William S Frommer, Alvin Sinderbrand, April 9, 1996: US05506687 (9 worldwide citation)

A digital video tape recording/playback system having a plurality of recording heads (A, B, C, D) on a rotating head mechanism 94 for recording slanting tracks 108 which extend diagonally across a tape 82 provides processing of video signals in a plurality of data processing channels with selective ...


10
Jonathan J Stone, Terence R Hurley: Data compression. Sony Corporation, Sony United Kingdom, William S Frommer, Alvin Sinderbrand, March 18, 1997: US05613091 (7 worldwide citation)

A signal processing system includes a compression encoder 16 for compressing an input block of data samples including a plurality of sub-blocks, each sub-block including an array of data samples, into a block of compressed data. A sequencer 14' accesses the data samples of the input block to be pass ...