Jill Boyce

6343098, Jan 29, 2002

Feb 26, 1998

09/031035

Jill MacDonald Boyce - Manalapan NJ

Lucent Technologies Inc. - Murray Hill NJ

H04B 166

37524003

The invention provides a multi-resolution video encoding system which improves the computational efficiency associated with encoding a video sequence in two or more different resolutions. An illustrative embodiment includes a first encoder for encoding the sequence at a first resolution, and a second encoder for encoding the sequence at a second resolution higher than the first resolution. Information obtained from encoding the sequence at the first resolution is used to provide rate control for the sequence at the second resolution. This information may include, for example, a relationship between a quantization parameter selected for an image at the first resolution and a resultant output bitrate generated by encoding the image using the selected quantization parameter. The invention can be used with a variety of video encoding standards, including H. 261, H. 263, Motion-JPEG, MPEG-1 and MPEG-2.

6490705, Dec 3, 2002

Oct 22, 1998

09/176982

Jill MacDonald Boyce - Manalapan NJ

Lucent Technologies Inc. - Murray Hill NJ

H03M 1335

714776

In order to transmit an inter-frame coded video signal, such as an MPEG-coded video signal, over a packet-based network such as the Internet, the video signal associated with at least one video frame, is split ( ) into a high priority partition and a low priority partition. A systematic forward error erasure/correction (FEC) code ( ), such as a Reed Solomon (n,k) code, is then applied to bytes in the high priority partition. The forward error/erasure corrected high priority partition bytes and the low priority partition bytes are then combined ( ) into n packets for transmission over the packet network to a receiver/decoder. Each of the n transmitted packets contains a combination of both high priority partition data bytes and low priority partition information bytes. In k of those packets the high priority partition data bytes are all high priority partition information bytes and in n-k of those packets all the high priority partition data byte are parity bytes produced by the FEC coding. More specifically, for each high priority partition byte position within the n packets, the forward error/erasure correction code is applied using one high priority partition information byte from the same byte position in each of those k packets to determine n-k parity bytes, which are arranged, one byte per packet, in the n-k packets containing high priority partition parity bytes.

6542693, Apr 1, 2003

May 29, 1998

09/087068

Jill MacDonald Boyce - Manalapan NJ

Lucent Technologies Inc. - Murray Hill NJ

H04N 591

386 68, 386111

Reverse jog play can be provided quickly and simply in a player that plays a recorded stream of inter-frame encoded digital video by storing, in intra-coded frame format, frames that were previously decoded by the player and are in the vicinity of the frame currently being displayed. The intra-frame encoded versions of the decoded frames may be digitally stored in random access memory (RAM) or in some other storage medium that is easily accessible. The number of previously decoded frames may be a fixed number essentially independent of the frame structure of the video stream. Alternatively, the player stores each decoded frame from a predetermined, e. g. , the most recently or next to most recently decoded, intra-coded frame (I-frame) until the current frame. Thus, the number of useable stored frames is a function of the video stream structure, the design choices of the user, and the current frame being displayed. Optionally, when using reverse jog play, an additional series of frames is decoded and stored upon reaching a point near the I-frame toward which the display is moving.

6563876, May 13, 2003

May 10, 2001

09/853123

Jill MacDonald Boyce - Manalapan NJ
Larry Pearlstein - Newton PA

Hitachi America, Ltd.

H04B 166

37524015, 348567, 348568, 37524021, 37524025

Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.

6907079, Jun 14, 2005

Feb 11, 2003

10/364430

Cristina Gomila - Princeton NJ, US
Jill MacDonald Boyce - Manalapan NJ, US

Thomson Licensing S.A. - Boulogne-Billancourt

H04B001/66

37524025, 37524024, 37524012, 37524014, 37524026, 37524018, 382233, 382236, 382238, 382239, 382248, 382251

An encoder, decoder, and corresponding method are disclosed for encoding pixel data as a plurality of block transform coefficients and decoding encoded block transform coefficients to provide reconstructed pixel data, the encoder and/or decoder includes a conditional deblocking filter for filtering only block transitions meeting pre-selected pixel brightness level criteria, where the conditional deblocking filter method includes receiving at least one first pixel adjacent to a block transition, providing a signal indicative of the brightness of the at least one first pixel, comparing the brightness signal with at least one of an upper brightness threshold and a lower brightness threshold, and conditionally filtering a plurality of adjacent pixels including the first pixel at the block transition in response to the brightness comparison.

7151754, Dec 19, 2006

Sep 22, 2000

09/668242

Jill M. Boyce - Manalapan NJ, US
Haitao Zheng - Eatontown NJ, US

Lucent Technologies Inc. - Murray Hill NJ

H04Q 7/00

370328, 370469, 714746

A complete User Datagram Protocol (CUDP) is disclosed that reduces packet loss. Channel frame error information is used with a packet level forward error correction (FEC) coding technique to accommodate wireless multimedia traffic. Each packet, as well as the channel frame error information, is forwarded to a given application. The CUDP protocol further assists the FEC decoding process by forwarding the locations of corrupted frames to the FEC decoder. Maximal Distance Separable (MDS) codes can be applied to a group of packets, to achieve additional robustness. An MDS decoder utilizes the frame error information to recognize the erasures within each packet. The error information can be represented as a set of LTU error indicators associated with each packet (for FEC decoders requiring an erasure indicator). The error indicators point to the starting and ending location of the erroneous data. The error information can also be represented as a reformatted packet (for FEC decoders Recognizing Erasures).

7173970, Feb 6, 2007

Apr 30, 2002

10/136566

Jill MacDonald Boyce - Manalapan NJ, US
Larry Pearlstein - Newton PA, US

Hitachi America Ltd. - Tarrytown NY

H04N 11/04

37524015, 37524025

Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.

7295611, Nov 13, 2007

Apr 5, 2006

11/398164

Jill MacDonald Boyce - Manalapan NJ, US
Larry Pearlstein - Newton PA, US

Hitachi America, Ltd. - Tarrytown NY

H04N 7/12
H04N 11/04

37524012

Methods and apparatus for implementing a reduced cost HDTV/SDTV video decoder are disclosed. The described joint video decoder is capable of decoding HDTV pictures at approximately the resolution of standard definition television pictures and can be used to decode HDTV and/or SDTV pictures. The described video decoder may be used as part of a picture-in-picture decoder circuit for providing picture-in-picture capability without providing multiple full resolution video decoders. The reduction in decoder circuit complexity is achieved through the use of a plurality of data reduction techniques including the use of a preparser, downsampling, and truncating pixel values.