Patents by Inventor Robindra Joshi
Robindra Joshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10158445Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: GrantFiled: June 30, 2011Date of Patent: December 18, 2018Assignee: Avago Technologies International Sales Pte. LimitedInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Patent number: 9025710Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: GrantFiled: June 30, 2011Date of Patent: May 5, 2015Assignee: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Patent number: 8934586Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: GrantFiled: June 30, 2011Date of Patent: January 13, 2015Assignee: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Patent number: 8718589Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: GrantFiled: June 30, 2011Date of Patent: May 6, 2014Assignee: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Patent number: 8666005Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: GrantFiled: June 30, 2011Date of Patent: March 4, 2014Assignee: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Patent number: 8462837Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.Type: GrantFiled: October 14, 2011Date of Patent: June 11, 2013Assignee: Broadcom CorporationInventors: Thuji Simon Lin, Steven Jaffe, Robindra Joshi
-
Publication number: 20120275508Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.Type: ApplicationFiled: October 14, 2011Publication date: November 1, 2012Applicant: Broadcom CorporationInventors: Thuji Simon Lin, Steven Jaffe, Robindra Joshi
-
Publication number: 20120082278Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: ApplicationFiled: June 30, 2011Publication date: April 5, 2012Applicant: BROADCOM CORPORATIONInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Publication number: 20120082272Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: ApplicationFiled: June 30, 2011Publication date: April 5, 2012Applicant: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Publication number: 20120082277Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: ApplicationFiled: June 30, 2011Publication date: April 5, 2012Applicant: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Publication number: 20120082276Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: ApplicationFiled: June 30, 2011Publication date: April 5, 2012Applicant: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Publication number: 20120083235Abstract: Method and apparatuses are disclosed to substantially compensate for various unwanted interferences and/or distortions within a communications receiver. Each of these apparatuses and methods estimate the various unwanted interferences and/or distortions within the communications receiver. Each of these apparatuses and methods remove the estimates of the various unwanted interferences and/or distortions within the communications receiver from one or more communications signals within the communications receiver to substantially compensate for the various unwanted interferences and/or distortions.Type: ApplicationFiled: June 30, 2011Publication date: April 5, 2012Applicant: Broadcom CorporationInventors: Ramon Alejandro Gomez, Bruce J. Currivan, Massimo Brandolini, Young Shin, Francesco Gatta, Hanli Zou, Loke Kun Tan, Lin He, Thomas Joseph Kolze, Leonard Dauphinee, Robindra Joshi, Binning Chen
-
Patent number: 8040941Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.Type: GrantFiled: August 7, 2007Date of Patent: October 18, 2011Assignee: Broadcom CorporationInventors: Thuji Simon Lin, Steven Jaffe, Robindra Joshi
-
Patent number: 7489725Abstract: A feedforward filter has a plurality of feedforward filter taps, including a feedforward filter reference tap. The reference tap of the feedforward filter is positioned proximate a center position of the feedforward filter. A ramping circuit assembly has an input port configured to receive at least one decision feedback filter tap coefficient from a decision feedback filter. A coefficient ramping circuit is configured to provide a ramped output for at least one of the decision feedback filter tap coefficients. The ramped output is varied over time from a first value to a second value. The second value is dependent upon the value of a decision feedback filter tap coefficient. An output port of the ramping circuit assembly is configured to communicate information representative of the ramped output(s) to a precoder.Type: GrantFiled: May 19, 2004Date of Patent: February 10, 2009Assignee: Broadcom CorporationInventors: Steven T. Jaffe, Robindra Joshi, David Jones, Thuji Simon Lin
-
Publication number: 20080304596Abstract: Certain aspects of a method and system for receiving audio, video and data services with advanced television systems committee (ATSC) enabled television sets may be provided. Aspects of the method may include conversion of a plurality of received quadrature amplitude modulated (QAM) signals into a plurality of vestigial side band (VSB) signals within a set-top box. The set top box may tune to each of the plurality of received QAM signals and demodulate each of the plurality of received QAM signals into a plurality of bitstreams and demultiplex the plurality of bitstreams. The demultiplexed plurality of bitstreams may be modulated into a plurality of VSB signals. The plurality of VSB signals may be modulated into a plurality of RF signals. One or more of the plurality of RF signals may be communicated to at least one of a plurality of VSB enabled television sets.Type: ApplicationFiled: June 12, 2007Publication date: December 11, 2008Inventors: Loke Tan, Lionel J. D'Luna, Robindra Joshi
-
Publication number: 20080215652Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.Type: ApplicationFiled: August 7, 2007Publication date: September 4, 2008Applicant: Broadcom CorporationInventors: Thuji Simon LIN, Steven Jaffe, Robindra Joshi
-
Patent number: 7254167Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of selectable predetermined integer bits, e.g., k or k+1 data bits, is grouped into a selectable integer number of bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.Type: GrantFiled: October 18, 2001Date of Patent: August 7, 2007Assignee: Broadcom CorporationInventors: Thuji Simon Lin, Steven Jaffe, Robindra Joshi
-
Publication number: 20060120472Abstract: A method of compensating for carrier frequency and phase errors of a received multi-carrier modulated signal. The received multi-carrier signal including modulated carriers for transmitting known data and unmodulated carriers for error correction, comprising, time domain down converting the received multi-carrier signal to base-band to provide a down-converted signal, the down-converted signal including a plurality of modulated carriers for transmitting known data and unmodulated carriers for error correction. Sampling an unmodulated carrier of the down-converted signal to provide received data samples. Providing a reference signal derived from the unmodulated carrier of the down-converted signal. And, estimating phase errors from a phase difference between the ummodulated carrier and the reference signal derived from the unmodulated carrier of the down-converted signal to provide a plurality of received sample phase error estimates for each modulated carrier.Type: ApplicationFiled: January 12, 2006Publication date: June 8, 2006Inventors: Robindra Joshi, Jeffrey Putman, Thuji Lin, Paul Yang
-
Publication number: 20040252755Abstract: A feedforward filter has a plurality of feedforward filter taps, including a feedforward filter reference tap. The reference tap of the feedforward filter is positioned proximate a center position of the feedforward filter. A ramping circuit assembly has an input port configured to receive at least one decision feedback filter tap coefficient from a decision feedback filter. A coefficient ramping circuit is configured to provide a ramped output for at least one of the decision feedback filter tap coefficients. The ramped output is varied over time from a first value to a second value. The second value is dependent upon the value of a decision feedback filter tap coefficient. An output port of the ramping circuit assembly is configured to communicate information representative of the ramped output(s) to a precoder.Type: ApplicationFiled: May 19, 2004Publication date: December 16, 2004Applicant: BROADCOM CORPORATIONInventors: Steven T. Jaffe, Robindra Joshi, David Jones, Thuji Simon Lin
-
Patent number: 6553063Abstract: A device of dynamic communication of information allows, on the average, non-integer bits per symbol transmission, using a compact code set or a partial response decoding receiver. A stream of k or k+1 data bits is grouped into bit vectors which then are mapped onto corresponding signal constellations forming transmission symbols. Two or more symbols can be grouped and further encoded, so that a symbol is spread across the two or more symbols being communicated. Sequence estimation using, for example, maximum likelihood techniques, as informed by noise estimates relative to the received signal. Each branch metric in computing the path metric of a considered sequence at the receiver is weighted by the inverse of the noise power. It is desirable that the constellation selection, sequence estimation and noise estimation be performed continuously and dynamically.Type: GrantFiled: October 29, 1999Date of Patent: April 22, 2003Assignee: Broadcom CorporationInventors: Thuji Simon Lin, Steven Jaffe, Robindra Joshi