Kim Holt Matthews

US Patent:

7200670, Apr 3, 2007

Filed:

Jun 30, 2000

Appl. No.:

09/608473

Inventors:

John P. Hearn - New Providence NJ, US
Kim N. Matthews - Watchung NJ, US
Christopher C. Yu - Westfield NJ, US

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

G06F 15/16

US Classification:

709232, 709218, 709230, 709231, 370392

Abstract:

The payloads of IP packets are checked to actually determine if a packet contains MPEG-2 video rather than using predefined streams or priority levels that are assumed to contain such information as is done in the prior art. More specifically, the “sync” bytes of the MPEG-2 stream are searched for within the IP packet payload, and when a pattern indicative of the sync bytes is found the sync bytes are identified and the packet is determined to contain MPEG-2 video. The sync byte was defined in MPEG-2 for over-the-air broadcasting in order that a television receiver be able to synchronize the MPEG-2 transport stream packets. Note that the MPEG-2 video, e. g. , the MPEG-2 transport stream packets, may or may not be incorporated within real time protocol (RTP) packets before being incorporated into the IP packets.

US Patent:

8516531, Aug 20, 2013

Filed:

Sep 6, 2006

Appl. No.:

11/516418

Inventors:

John P. Hearn - New Providence NJ, US
Kim N. Matthews - Watchung NJ, US
Lesley Jen-Yuan Wu - Parsippany NJ, US

Assignee:

Alcatel Lucent - Paris

International Classification:

H04N 7/173
H04N 7/00

US Classification:

725 94, 725 95, 725 97, 348114

Abstract:

Technology which facilitates a reduction in time of the presentation of video content after a viewer changes channels is described. Frames of a video stream associated with a channel are analyzed to identify locations of access points in the video stream prior to relaying the video stream to a presentation device. Information indicating the locations of access points is stored. The video stream is then time shifted on a continuous basis and is transmitted to the presentation device which made the request for as long as the presentation device remains tuned to the channel corresponding to the request. A first available frame on or before an access point of the time shifted video stream is selected based on the stored information, which is used to commence the transmission of the time shifted video to the presentation device, which facilitates a more immediate presentation of video content.

US Patent:

53313488, Jul 19, 1994

Filed:

Jul 27, 1992

Appl. No.:

7/919792

Inventors:

Scott C. Knauer - Mountainside NJ
Kim N. Matthews - Watchung NJ
Arun N. Netravali - Westfield NJ
Eric D. Petajan - Watchung NJ
Robert J. Safranek - New Providence NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04N 7137

US Classification:

348402

Abstract:

An improved predictive encoder where the leak signal is a function of the buffer fullness of the encoder. More specifically, the signals stored in the encoder output buffer are further encoded based on the fullness of the buffer, and information about this further encoding is used in determining the leak factor level. In accordance with another improvement, this leak factor level is not constrained to granularity that is imposed by the decoder hardware. Removal of the constraint is accomplished by cycling through a sequence of permissible leak levels that averages at the desired level.

US Patent:

50400622, Aug 13, 1991

Filed:

Mar 19, 1990

Appl. No.:

7/495559

Inventors:

Scott C. Knauer - Mountainside NJ
Kim N. Matthews - Somerset NJ
Arun N. Netravali - Westfield NJ
Eric D. Petajan - Millburn NJ
Robert J. Safranek - New Providence NJ
Peter H. Westerink - Millburn NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04N 712
H04N 700

US Classification:

358141

Abstract:

A high definition television system that is characterized by low transmission bandwidth is achieved by removing redundancies in the signal and encoding the remaining signals. In the encoding, a portion of the signals to be transmitted is created in the form of an analog signal or a concatenated plurality of pulse amplitude coded samples (A-signal), and another portion of the signals to be transmitted is created in digital form (D-signal). The D-signal is consigned to a specified portion of the transmitted signal, leaving the remainder of the transmission capacity for the A-signal. When the normally created digital signals do not fully occupy the digital portion, enhanced operation results when selected ones of the analog signals or samples are excised from the A-signal, encoded digitally, and added to the D-signal. The excising of those signals leaves room in A-signal portion to include additional analog signals. This leads to an overall better image reproduction at the receiver.

US Patent:

51344777, Jul 28, 1992

Filed:

Dec 11, 1990

Appl. No.:

7/626355

Inventors:

Scott C. Knauer - Mountainside NJ
Kim N. Matthews - Watchung NJ
Arun N. Netravali - Westfield NJ
Eric D. Petajan - Watchung NJ
Robert J. Safranek - New Providence NJ
Peter H. Westerink - Newark NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04N 712
H04N 718
H04N 544

US Classification:

358136

Abstract:

An HDTV receiver design includes a reconstruction section and an inner loop section. The reconstruction section comprises a receiving section for accepting the television receiver's antenna signals, for separating out the component signals from the received signals and for decoding the separated signals. The decoded signals are applied to a quantization decoder that is responsive to vector codebook and to applied quantized vector signals, and the output signals of the quantization decoder are applied to an inverse DCT circuit. The inner loop comprises an adder for adding an estimate signal to the output of the DCT circuit, a frame buffer, a motion compensation circuit that is capable of translating large blocks as well as small blocks and a leak circuit that modulates the output of the motion compensator circuit in accordance with a received leak control signal. The input to the frame buffer is also applied to conventional amplification and display circuits to form the familiar output of a television receiver.

US Patent:

51444232, Sep 1, 1992

Filed:

Dec 11, 1990

Appl. No.:

7/626356

Inventors:

Scott C. Knauer - Mountainside NJ
Kim N. Matthews - Watchung NJ
Arun N. Netravali - Westfield NJ
Eric D. Petajan - Watchung NJ
Robert J. Safranek - New Providence NJ
Peter H. Westerink - Newark NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04N 712
H04N 718

US Classification:

358133

Abstract:

A motion compensated encoder where motion vectors are selected based on the prediction error generated in localized areas of the encoded image and based on an available bit budget. The motion vectors are created by dividing the image into blocks of two sizes and by considering the best mix of large and small size blocks, and their associated motion vectors, that minimize the overall prediction error, within the constraints of the bit budget. For convenience, the image division is arranged so that a given number of small sized blocks forms one large sized block (e. g. 16:1). Also, the block sizes are arranged so that employing only large sized blocks does not exceed the given bit budget, while employing only the small sized blocks does exceed the given bit budget.

US Patent:

50438085, Aug 27, 1991

Filed:

Mar 19, 1990

Appl. No.:

7/495525

Inventors:

Scott C. Knauer - Mountainside NJ
Kim N. Matthews - Somerset NJ
Arun N. Netravali - Westfield NJ
Eric D. Petajan - Millburn NJ
Robert J. Safranek - New Providence NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H04N 700
H04N 712

US Classification:

358133

Abstract:

A high definition television system that is characterized by low transmission bandwidth is achieved by in a manner removing much of the redundancies in the signal, efficiently encoding the remaining signals, and transmitting the encoded signal in a manner that is most compatible with the applicable standards. Specifically, the television signal is encoded by developing motion vectors that describe the best motion estimate of the image to be transmitted, by developing motion estimation error signals, by encoding these error signals within the same bandwidth as occupied by standard NTSC signals and by transmitting the encoded error signals during periods that correspond to the active scan intervals of the NTSC TV signal. The motion vectors themselves, together with video and control signals, are transmitted during the NTSC retrace period.

US Patent:

53770145, Dec 27, 1994

Filed:

Jan 6, 1992

Appl. No.:

7/817206

Inventors:

Scott C. Knauer - Mountainside NJ
Kim N. Matthews - Watchung NJ
Arun N. Netravali - Westfield NJ
Eric D. Petajan - Watchung NJ

Assignee:

AT&T Corp. - Murray Hill NJ

International Classification:

H04N 5783
H04N 713

US Classification:

358335

Abstract:

An apparatus provides digital data representative of a compressed high definition video image signal in a manner such that a conventional video tape recorder (VTR) employing current electrical and mechanical technologies is adaptable for reading this data for display in special modes such as fast forward, reverse and still frame. To minimize the loss of data while the VTR is operating in one of these special modes, the data representative of the high definition image signal is decoded by the apparatus to yield available time slots in the data stream. These time slots are then filled with data which duplicates the most important of the original transmitted data then existing in other time slots in the data stream. This duplicating of the data increases the likelihood that the important picture information will be read by the VTR while operating in a special mode. To facilitate fast recovery from lost of synchronization, the apparatus utilizes a small fraction of the original image which is included in each section or slice of the transmitted image.