JOHN HENDERSON
Medical Practice in Princeton, NJ

6668018, Dec 23, 2003

Mar 5, 2002

10/090860

Larry Pearlstein - Newtown PA 18940
John Henderson - Princeton NJ 08540
Jack Fuhrer - Princeton Junction NJ 08550

H04N 736

37524012, 37524025

Methods and apparatus for improving the quality of images generated by reduced resolution video decoders and new and improved video decoders which produce reduced resolution images are described. Methods and apparatus for identifying conditions within an image which may significantly degrade image quality if particular portions of the image are used by a reduced resolution decoder as reference data are described. One specific embodiment is directed to a new video decoder which decodes portions of a single image, e. g. , frame, at different resolutions. Areas of the image along high contrast vertical or horizontal edges are decoded at full resolution while other portions of the same image are decoded at reduced resolution. By decoding and storing portions of reduced resolution images at full resolution for reference purposes, the risk of prediction errors resulting from the use of downsampling on reference frames is reduced.

6370192, Apr 9, 2002

Nov 20, 1997

08/974906

Larry Pearlstein - Newton PA
John Henderson - Princeton NJ
Jack Fuhrer - Princeton Junction NJ

Hitachi America, Ltd.

H04N 712

375240

Methods and apparatus for improving the quality of images generated by reduced resolution video decoders and new and improved video decoders which produce reduced resolution images are described. Methods and apparatus for identifying conditions within an image which may significantly degrade image quality if particular portions of the image are used by a reduced resolution decoder as reference data are described. In particular, techniques for identifying blocks of pixels, referred to as constant block regions, having approximately the same intensity in terms of luminance values, are discussed. High contrast vertical and/or horizontal edges will cause significant prediction errors in images generated by reduced resolution decoders under certain conditions. Methods for assessing when such conditions exist and a significant prediction error is likely to occur are described. In addition methods and apparatus for minimizing the effect of such prediction errors in downsampling decoders are also described.

6148033, Nov 14, 2000

Nov 20, 1997

8/974908

Larry Pearlstein - Newtown PA
John Henderson - Princeton NJ
Jack Fuhrer - Princeton Junction NJ

Hitachi America, Ltd. - Tarrytown NY

H04N 736, H04N 750

37524016

Methods and apparatus for improving the quality of images generated by reduced resolution video decoders and new and improved video decoders which produce reduced resolution images are described. Methods and apparatus for identifying conditions within an image which may significantly degrade image quality if particular portions of the image are used by a reduced resolution decoder as reference data are described. In particular, techniques for identifying blocks of pixels, referred to as constant block regions, having approximately the same intensity in terms of luminance values, are discussed. High contrast vertical and/or horizontal edges will cause significant prediction errors in images generated by reduced resolution decoders under certain conditions. Methods for assessing when such conditions exist and a significant prediction error is likely to occur are described. In addition methods and apparatus for minimizing the effect of such prediction errors in downsampling decoders are also described.

2006014, Jul 6, 2006

Feb 3, 2006

11/346643

John Henderson - Princeton NJ, US
Carl Scarpa - Plainsboro NJ, US

H01Q 3/00

342359000

Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.

2008008, Apr 17, 2008

Aug 15, 2007

11/839202

John Henderson - Princeton NJ, US
Carl Scarpa - Plainsboro NJ, US

H01Q 3/00, H01Q 3/24, H03D 1/04

375346000, 342372000, 343893000

Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.

2002008, Jun 27, 2002

Nov 30, 2001

10/020703

John Henderson - Princeton NJ, US
Carl Scarpa - Plainsboro NJ, US

H04N007/20, H01Q003/22, H01Q003/24, H01Q003/26, H01Q003/00, H04B001/38, H04M001/00, H01Q013/00, H01Q007/08, H01Q007/04

725/072000, 342/372000, 343/757000, 343/777000, 343/788000, 343/842000, 455/562000, 725/069000, 725/070000

Antennas with steerable antenna patterns and techniques for using such antennas are described. In accordance with the invention, antenna patterns with one or more NULLs are used. Through the use of digital control signals the antenna pattern is steered so that a source of signal interference, e.g., a multipath signal, will be located in a NULL. In this manner the received signal's S/N ratio can be maximized thereby facilitating demodulation. The techniques of the invention can be applied to television, computer devices, mobile devices and a wide range of other systems. Digital commands to control an antenna may include multiple information fields, e.g., a direction field, a channel field, a gain field and a polarity field. Antennas incapable of supporting the specified fields disregard information in fields which are not supported. Information in each supported field is decoded and used to adjust the corresponding antenna characteristic.

6061400, May 9, 2000

Nov 20, 1997

8/974907

Larry Pearlstein - Newtown PA
John Henderson - Princeton NJ
Jack Fuhrer - Princeton Junction NJ

Hitachi America Ltd. - Tarrytown NY

H04N 166, H04N 712

375240

Techniques for identifying blocks of pixels, referred to as constant block regions, having approximately the same intensity in terms of luminance values, are discussed. High contrast vertical and/or horizontal edges will cause significant prediction errors in images generated by reduced resolution decoders under certain conditions. Methods for assessing when such conditions exist and a significant prediction error is likely to occur are described. In addition methods and apparatus for minimizing the effect of such prediction errors in downsampling decoders are also described. One specific embodiment is directed to a new video decoder which decodes portions of a single image, e. g. , frame, at different resolutions. Areas of the image along high contrast vertical or horizontal edges are decoded at full resolution while other portions of the same image are decoded at reduced resolution. By decoding and storing portions of reduced resolution images at full resolution for reference purposes, the risk of prediction errors resulting from the use of downsampling on reference frames is reduced.