Vicky B Kaku

7050505, May 23, 2006

Aug 6, 2002

10/213833

Vicky B. Kaku - San Diego CA, US

General Instrument Corporation - Horsham PA

H04N 7/12

37524029, 370429

Aliasing and routing of plural MPEG data streams are disclosed. Disclosed apparatus embodiments include, e. g. , a router or a cross-point switch that can route data packets from any source location(s) to any destination location(s). Such locations may be on multiple targets on a single processing board or may be on multiple boards in a chassis with a backplane linking the boards together. The disclosed aliasing and routing is achieved by processing MPEG data streams with associated PIDs so they can be transported between communicatively linked locations. This is achieved by generating a PID alias table with plural PID aliases for each input data stream; by removing at least one PID from each input data stream to thereby produce filtered data streams; by determining target destination(s) for each of the filtered data streams; and by buffering the filtered data streams so the filtered data streams can then be read and transported to respective target destination(s).

7356029, Apr 8, 2008

Apr 16, 2002

10/124602

Vicky B. Kaku - San Diego CA, US
Branislav N. Meandzija - Del Mar CA, US
Randall Silagi - San Diego CA, US

General Instrument Corporation - Horsham PA

H04L 12/56
H04J 3/24

370390, 370474

A system and method of multiplexing data into an MPEG transport stream are described. In particular, an IP packet is examined to determine if it is a multicast IP packet. If so, the IP packet is repackaged into one or more MPEG packets for transmission in the MPEG transport stream.

7408961, Aug 5, 2008

Apr 16, 2002

10/124610

Vicky B. Kaku - San Diego CA, US

General Instrument Corporation - Horsham PA

H04J 3/04
H04J 3/02

370535, 370537, 370542

Transcoder multiplexers that transport digital packets, such as MPEG2 packets, between boards in a chassis using a serial differential protocol are disclosed. The disclosed multiplexers achieve data transfer rates at least twice as fast as conventional systems. Digital data packets are thereby efficiently communicated to target processing engines on other boards across the backplane. Prior art requirements for custom backplane designs, together with discrete hardware for sending data in parallel form between boards, are obviated. Instead, a backplane architecture designed specifically for IP data traffic from any slot to any slot is utilized. Also, an improved protocol is applied for transmitting data serially between boards to provide an inexpensive, upgradeable and flexible hardware solution. Preferred embodiments use LVDS transmitter/receiver pairs with high link speeds.

20050068992, Mar 31, 2005

Sep 24, 2004

10/949500

Vicky Kaku - San Diego CA, US
James Heaton - Ramona CA, US

H04L012/56

370535000

The present method and apparatus provide high-speed data multiplexing of telecommunications data signals. In one of many possible embodiments, an apparatus provides for high-speed multiplexing of Motion Picture Experts Group (MPEG) transport streams in a cable network. The apparatus includes an input interface, a demultiplexer, and an output interface. The input interface is configured to receive a number of transport streams carrying programming services. The demultiplexer is configured to access user-defined logic and to generate the internal transport streams based on the user-defined logic. The demultiplexer is further configured to add the programming services to at least one of the internal transport streams based on the user-defined logic. The output interface is configured to output the internal transport streams.

20080025395, Jan 31, 2008

Jul 27, 2006

11/460341

Robert S. Nemiroff - Carlsbad CA, US
Chanchal Chatterjee - San Diego CA, US
Robert O. Eifrig - San Diego CA, US
Michael A. Grossman - San Diego CA, US
Vicky B. Kaku - San Diego CA, US
James R. Heaton - Ramona CA, US

GENERAL INSTRUMENT CORPORATION - Horsham PA

H04N 7/12

37524012, 37524026

Method and apparatus for motion estimation in a video encoder is described. In one example, a motion estimator includes registers, first-in-first out (FIFO) logic, costing logic, and processing logic. The registers are configured to store an even field and an odd field of a current macroblock pair in a current frame in a video stream. The FIFO logic is configured to store a reference window of a reference frame in the video stream. The costing logic is configured to produce cost data. The processing logic is coupled to the registers, the FIFO logic, and the costing logic. The processing logic is configured to generate common sums of absolute differences (SADs) for the current macroblock pair, generate SADs for partitions of the current macroblock pair from combinations of the common SADs, and cost and minimize the SADs for the partitions.

61953938, Feb 27, 2001

Jul 6, 1998

9/110930

Robert Nemiroff - San Diego CA
Vicky B. Kaku - San Diego CA

General Instrument Corporation - Horsham PA

H04B 166

37524028

A system for processing a sequence of video or other data frames at a data encoder during a sync loss. During a sync loss of input data at a video or other data encoder, substitute data such as black video is used to provide complete "clean" data frames to a compressor at the encoder. Artifacts due to compression and encoding of partial frames are avoided. If a sync loss is detected in the middle of a particular data frame that is input to the encoder, the remainder of the frame is completed with substitute data which is in sync with the earlier data in the frame. Additional complete frames of the substitute data are provided to the compressor following the particular data frame, still in sync with the particular frame, until such time that a sync recovery is detected, and a field or frame check is performed on the new, post-sync loss, data to gain confidence of the sync recovery. A null signal may be provided to the compressor after the last substitute frame, and prior to the post-sync loss frame after the frame in which the field or frame check occurs. Different frame and video clock rates in the post-versus pre-sync loss frames are automatically accounted for.

61378372, Oct 24, 2000

Jan 23, 1998

9/012815

Robert Nemiroff - San Diego CA
Vicky B. Kaku - San Diego CA

Motorola, Inc. - Schaumburg IL
General Instrument Corporation - Horsham PA

H04N 736

37524016

A method and apparatus for efficient motion estimation of a digital video image wherein memory capacity and processing requirements are reduced by 50% or more, and image quality is maintained. Only a portion of the pixel data of a search window is used to perform motion estimation. Specifically, a portion of the pixel data of a previous image is retrieved and stored in a memory according to a search window pattern such as a fixed checkerboard pattern. Pixel data from the current image is alternated between first and second inverse checkerboard patterns for successive comparison regions of the search window. The scheme is compatible with frame or field mode video sequences.