Bhavesh C Bhatt

20020073426, Jun 13, 2002

Dec 8, 2000

09/733185

Bhavesh Bhatt - Franklin Park NJ, US

G06F003/00
H04N005/445
G06F013/00

725/046000, 725/044000

The present invention partitions the EPG, allowing storage of portions of the EPG in separate memory components. Based on viewer preferences, the invention identifies preferred portions of the EPG and stores these portions in the more rapid memory. The more rapid memory can be electronic, or RAM. The invention partitions the EPG into at least three portions: the channel portion, the schedule portion and the program portion. The invention further divides each portion into a subportion (or submodule) including only preferred data. The invention updates the information stored in the memory module having the most rapid access. The invention also detects infrequently accessed portions of the EPG stored in the most rapid memory and moves the infrequently accessed portions to memory with slower access. The memory with slower access can be magnetic, or a hard drive. Storing only preferred portions of a program guide in memory having rapid access maintains the speed of access to the preferred portions of the EPG and increases the amount of available memory with rapid access.

55304842, Jun 25, 1996

May 19, 1995

8/446125

Bhavesh B. Bhatt - Franklin Park NJ
Nicola J. Fedele - Kingston NJ
Glenn A. Reitmeier - West Trenton NJ

Thomson Multimedia S.A - Courbevoie

H04N 701

348556

An adaptive scan format converter (14, FIG. 1; FIG. 2) at a transmitter/encoder of a video signal processing system such as a high definition television (HDTV) system, as a function of what format is desired for coding and transmission via an output channel. Similarly, at a receiver, a received scan format is automatically converted (36, FIG. 1; FIG. 2) to a desired format for display as needed. For example, a received interlaced signal (I) will be automatically converted to progressive (P) format to be compatible with a progressive scan display device (39). A received progressive signal will be passed to the display device without format conversion. Automatic scan conversion is performed seamlessly so that, for example, the conversion between progressive main television program material and interlaced commercial material is produced without artifacts and is essentially invisible to a viewer.

62980882, Oct 2, 2001

May 28, 1997

8/864310

Bhavesh Bhatt - Franklin Park NJ
Raymond Lowe - North Caldwell NJ

Sarnoff Corporation - Princeton NJ

H04B 166

37524028

A method and apparatus for splicing a first information stream into a second information stream to produce an output information stream containing compressed digital data. The first and second information streams are synchronized using a common timing reference, thereby avoiding temporal discontinuity errors in an information stream decoder.

60286393, Feb 22, 2000

Dec 19, 1997

8/994078

Bhavesh Bhalchandra Bhatt - Franklin Park NJ
Ragnar Hlynur Jonsson - Reykjavik, IS

Thomson Consumer Electronics, Inc. - Indianapolis IN

H04N 701

348441

A process and apparatus for converting an MPEG-2 bitstream into an SMPTE-259 compatible bitstream is characterized by a frame rate converter which is selectively enabled to drop every 1001st frame of the incoming MPEG-2 bitstream depending on the input bitstream frame rate. If the input bitstream frame rate is other than 29. 97 or 59. 94 Hz, a frame dropper is enabled to discard every 1001st frame. The present converter can convert many different types of input bitstreams, such as all I types, IPIP types, or complex GOP types containing I, P, and B frames. The enabled frame dropper will drop either the I or P frame if it occurs as the 1001st frame, but if the 1001st frame is of the B frame type, the pixel information of the B frame is dropped. This produces a minimum in loss of information during the conversion. The format converter allows existing SMPTE-259 routing equipment to route and utilize MPEG-2 bitstreams, such as HDTV applications.

53156196, May 24, 1994

May 15, 1992

7/883735

Bhavesh B. Bhatt - Franklin Park NJ

RCA Thomson Licensing Corporation - Princeton NJ

H04L 512
H04L 2302

375 94

A television receiver responds to a quadrature amplitude modulated (QAM) signal containing symbols mapped into a four quadrant grid-like constellation defined by I and Q axes. Demodulated I and Q components are processed by a carrier recovery network which adjusts the parameters of a locally generated carrier reference signal so as to maintain a desired orientation of the QAM constellation. The carrier recovery network includes a time multiplexed processor, including a signal multiplier, exhibiting plural operating modes in a digital phase locked loop exhibiting a loop delay of one symbol period.

55172130, May 14, 1996

Sep 29, 1994

8/315050

Bhavesh B. Bhatt - Franklin Park NJ
Adolf Dsouza - Indianapolis IN

Thomson Consumer Electronics, Inc. - Indianapolis IN

H03H 730

375232

A blind equalization process (200) for an adaptive equalizer including a plurality of taps, each having a corresponding coefficient, is disclosed which comprises the following steps. Blind equalization (204) is performed on a subset of the coefficients in the adaptive equalizer. Then, if the coefficients have converged (206), a decision directed adaptive equalization process (220) is initiated.

56106610, Mar 11, 1997

May 19, 1995

8/446092

Bhavesh B. Bhatt - Franklin Park NJ

Thomson multimedia S.A. - Courbevoie

H04N 701

348446

An adaptive scan format converter (14 FIG. 1; FIG. 2) at a transmitter/encoder of a video signal processing system such as a high definition television (HDTV) system, as a function of what format is desired for coding and transmission via an output channel. Similarly, at a receiver, a received scan format is automatically converted (36, FIG. 1; FIG. 2) to a desired format for display as needed. For example, a received interlaced signal (I) will be automatically converted to progressive (P) format to be compatible with a progressive scan display device (39). A received progressive signal will be passed to the display device without format conversion. Automatic scan conversion is performed seamlessly so that, for example, the conversion between progressive main television program material and interlaced commercial material is produced without artifacts and is essentially invisible to a viewer.

57745129, Jun 30, 1998

Jun 27, 1996

8/666463

Bhavesh Bhalchandra Bhatt - Franklin Park NJ

RCA Thomson Licensing Corporation - Princeton NJ

H04L 2706

375376

A higher order phase loop filter includes an integrator consisting of an adder (25) and a delay element (31) arranged in a feedback loop between the output port of such adder and one of its input ports. Signal to be filtered is applied to a second input port of the adder. A detector (30) is coupled to the output of the adder to detect limiting values, which, when detected, conditions the detector to reset the current value in the delay element of the integrator to a fixed value such as zero. Resetting the delay element momentarily lowers the order of the filter and speeds system response time in the presence of noise.