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
James H Wilkinson, Michael J Ludgate, Jonathan M Soloff, Jonathan J Stone: Image processing apparatus. Sony United Kingdom, William S Frommer, Alvin Sinderbrand, January 24, 1995: US05384869 (88 worldwide citation)

Image processing apparatus is described for filtering a digital representation of a raster scanned image into a plurality of sub-bands in the two-dimensional spatial frequency domain, the resolution of the raster scanned image in a first direction (usually the horizontal direction) being greater tha ...


3
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 ...


4
Jonathan J Stone: Video data compression apparatus for recording and reproducing compressed video data at their various compressed data rates. Sony Corporation, Sony United Kingdom, William S Frommer, Alvin Sinderbrand, March 18, 1997: US05612788 (67 worldwide citation)

Apparatus for recording and reproducing video data is described that utilizes data compression to increase storage capacity. Real time input video data is decorrelated, quantized and entropy encoded. User control of a compression control parameter, such as quantization step width, is provided so tha ...


5
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 ...


6
Jonathan J Stone: Data formatter for formatting variable length data words into fixed length data words. Sony United Kingdom, William S Frommer, Alvin Sinderbrand, November 28, 1995: US05471594 (28 worldwide citation)

A two stage data formatter is described for converting variable bit length code words into fixed bit length code words. The second formatting stage 12 splits the words into complete fixed length code words and returns any remainder bits to the first formatting stage 10. The first formatting stage 10 ...


7
John W Richards, Jonathan J Stone, Alan Turner, Carl W Walters, Mukesh Chouhan, Peter Kavanagh: Apparatus and methods for designing, analyzing or simulating signal processing functions. Sony Corporation, Sony United Kingdom, William S Frommer, Alvin Sinderbrand, March 12, 1996: US05499373 (23 worldwide citation)

Data to be processed is stored within data files 20. Associated with each data file 20 is a header file 18. The header files 18 store data specifying a wide range of attributes of the data within the data files 20. A user selects a particular signal processing function 14 that he desires to use and ...


8
John W Richards, Stephen M Keating, Jonathan J Stone: Apparatus and method for processing image data. Sony United Kingdom, William S Frommer, Alvin Sinderbrand, February 21, 1995: US05392071 (19 worldwide citation)

Image processing apparatus is described in which a source stream of data captured by a particular source is passed through a data splitter where it is split using one splitting technique into a plurality of split streams of data. These split streams of data each contain only part of the information ...


9
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, ...


10
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 ...