1
James Hedley Wilkinson: Video compression. Sony Corporation, Sony United Kingdom, William S Frommer, Alvin Sinderbrand, August 19, 1997: US05659365 (125 worldwide citation)

In video motion vector generation and compensation, it is common for the chrominance sampling rate to be half the luminance sampling rate. When only a luminance motion vector is used, there can be rounding problems if either the horizontal or vertical motion vector (or both) is odd valued and the lu ...


2
Andrew Collins, Andrew Roger Kilner, Victoria Sophia Jennings, Sebastian Aleksander Paszkowicz, Eric Rudolf Siereveld, Stephane Daniel Andre Charles Labrousse, Robert Mark Stefan Porter, Ratna Rambaruth, Clive Henry Gillard: Selectively displaying information based on face detection. Sony United Kingdom, Oblon Spivak McClelland Maier & Neustadt L, December 22, 2009: US07636456 (118 worldwide citation)

A display arrangement comprises an image display device having two or more sets of images for display; a camera directed towards positions adopted by users viewing the display; a face detector for detecting human faces in images captured by the camera, the face detector being arranged to detect face ...


3
James H Wilkinson: Apparatus for compressing image data employing entropy encoding of data scanned from a plurality of spatial frequency bands. Sony Corporation, Sony United Kingdom, William S Frommer, Alvin Sinderbrand, July 16, 1996: US05537493 (108 worldwide citation)

A data compression technique is described for use in systems employing frequency separation, such as wavelet separation, in which the sub bands (0 to 9) have different numbers of frequency component values therein. The sub bands are scanned to form a stream of data for feeding to an entropy encoder ...


4
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 ...


5
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 ...


6
Robert Mark Stefan Porter, Ratna Rambaruth: Face detection. Sony United Kingdom, Oblon Spivak McClelland Maier & Neustadt P C, February 26, 2008: US07336830 (72 worldwide citation)

Video face detection apparatus in which a test image from a video sequence is compared with an image property model derived from image properties of a region detected to contain a face in a preceding image in the video sequence comprises: selecting a predetermined proportion of pixels in the region ...


7
Martin Rex Dorricott, Penelope Susan Cox, David Colin Charles Shepherd: Data storage apparatus and method allocating sets of data. Sony Corporation, Sony United Kingdom, William S Frommer, Frommer Lawrence & Haug, August 24, 1999: US05943690 (69 worldwide citation)

A data storage apparatus has a plurality of storage spaces p for storing sets of data. Each of the spaces has: available (unused) space x.sub.1 for storage; a number x.sub.2 of data sets already stored; a number x.sub.3 of channels available for transferring data to the space; and a number x.sub.4 o ...


8
James Hedley Wilkinson: Motion compensated video processing. Sony Corporation, Sony United Kingdom, William S Frommer, Frommer Lawrence & Haug, September 22, 1998: US05812194 (69 worldwide citation)

A motion compensated video processing method includes encoding a video frame group I.sub.0 -I.sub.7 into one in which one frame I.sub.0 of the group is a basic input frame or `I `frame, and the other frames B.sub.1 -B.sub.7 are derived from calculating the difference between a current frame and two ...


9
James Hedley Wilkinson: Motion vector compensation using overlapping weighted windows. Sony Corporation, Sony United Kingdom, William S Fromer, Joe H Shallenburger, Fromer Lawrence & Haug, August 6, 2002: US06430316 (69 worldwide citation)

A soft windowing technique involves the use of a window for vector assisted frame differing, the window being larger than a macroblock of the structure defined over the video picture. The edges of each window taper so that overlapping windows provide the correct pixel weighting at the edges. For a s ...


10
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 ...