Patents by Inventor Thulasinath G. Manickam
Thulasinath G. Manickam 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).
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Patent number: 8787430Abstract: A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the transmission medium. As a result, a very high data-rate transmission can be accomplished with low data-bit transmission on individual channels. A transmitter system and a receiver system are described for the communication system.Type: GrantFiled: September 14, 2009Date of Patent: July 22, 2014Assignee: Entropic Communications, Inc.Inventors: Sreen Raghavan, Thulasinath G. Manickam, Peter J. Sallaway
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Publication number: 20100002795Abstract: A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the transmission medium. As a result, a very high data-rate transmission can be accomplished with low data-bit transmission on individual channels. A transmitter system and a receiver system are described for the communication system.Type: ApplicationFiled: September 14, 2009Publication date: January 7, 2010Applicant: ENTROPIC COMMUNICATIONS, INC.Inventors: Sreen RAGHAVAN, Thulasinath G. MANICKAM, Peter J. SALLAWAY
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Patent number: 7613234Abstract: A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and/or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands).Type: GrantFiled: April 4, 2008Date of Patent: November 3, 2009Assignee: Entropic Communications, Inc.Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Patent number: 7590168Abstract: A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the transmission medium. As a result, a very high data-rate transmission can be accomplished with low data-bit transmission on individual channels. A transmitter system and a receiver system are described for the communication system.Type: GrantFiled: September 26, 2001Date of Patent: September 15, 2009Assignee: Entropic Communications, Inc.Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway
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Publication number: 20080285634Abstract: A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and/or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands).Type: ApplicationFiled: April 4, 2008Publication date: November 20, 2008Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Patent number: 7403752Abstract: A transceiver system according to the present invention transmits data utilizing the baseband and one or more frequency separated transmission bands. A baseband transmitter is combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. A baseband receiver is combined with one or more receivers that receive data from the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands). A transceiver circuit or chip according to the present invention includes a transmitter and a receiver and communicates with a corresponding transceiver chip. In some embodiments, one baseband PAM transmitter is combined with one frequency separated QAM transmitter.Type: GrantFiled: December 4, 2002Date of Patent: July 22, 2008Assignee: Vativ Technologies, Inc.Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Patent number: 7388904Abstract: A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and/or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands).Type: GrantFiled: June 3, 2003Date of Patent: June 17, 2008Assignee: Vativ Technologies, Inc.Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Patent number: 7333603Abstract: There is disclosed an echo canceller circuit for use in a full duplex transceiver of the type comprising a line driver capable of sending analog transmit signals through a cable and comprising a line receiver capable of receiving analog receive signals from the cable. An echo canceller impedance model circuit is coupled to an output of the line driver and is coupled to an input of the line receiver. The echo canceller impedance model circuit generates an echo canceller current that is equal in magnitude and opposite in phase to a current that represents signal echoes that are present in the analog receive signals. The echo canceller impedance model circuit has a variable impedance for generating the echo canceller current. The variable impedance has at least one variable resistor and at least one variable capacitor.Type: GrantFiled: December 27, 2005Date of Patent: February 19, 2008Assignee: National Semiconductor CorporationInventors: Peter J. Sallaway, Thulasinath G. Manickam, Sreen Raghavan
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Patent number: 7248890Abstract: A transceiver according to some embodiments of the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter of another transceiver and adjusts the power output of certain channels in a transmitter of the receiver. Upon start-up, the power output levels of signals in individual channels in the transmitter can be preset. A power balance can determine new power output levels of the transmitter from parameters in the receiver while receiving data transmitted by a similarly situated complementary transmitter in a second transceiver coupled to the transceiver. In some embodiments, a complementary receiver of the other transceiver determines the power outputs of the transmitter and the power levels are transmitted to the transmitter by the other transceiver.Type: GrantFiled: February 6, 2004Date of Patent: July 24, 2007Assignee: Vativ Technologies, Inc.Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Patent number: 7236757Abstract: A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the transmission medium. Additionally, a cross-channel interference filter in a receiver section corrects for cross-channel interference in the communication system. As a result, a very high data-rate transmission can be accomplished with low data-bit transmission on individual channels. A transmitter system and a receiver system are described for the communication system.Type: GrantFiled: February 6, 2002Date of Patent: June 26, 2007Assignee: Vativ Technologies, Inc.Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Patent number: 6980644Abstract: There is disclosed an echo canceller circuit for use in a full duplex transceiver of the type comprising a line driver capable of sending analog transmit signals through a cable and comprising a line receiver capable of receiving analog receive signals from the cable. An echo canceller impedance model circuit is coupled to an output of the line driver and is coupled to an input of the line receiver. The echo canceller impedance model circuit generates an echo canceller current that is equal in magnitude and opposite in phase to a current that represents signal echoes that are present in the analog receive signals. The echo canceller impedance model circuit has a variable impedance for generating the echo canceller current. The variable impedance has at least one variable resistor and at least one variable capacitor.Type: GrantFiled: May 12, 2000Date of Patent: December 27, 2005Assignee: National Semiconductor CorporationInventors: Peter J. Sallaway, Thulasinath G. Manickam, Sreen Raghavan
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Patent number: 6975674Abstract: There is disclosed a mixed mode equalization system for use in a transceiver capable of operating in a high frequency Ethernet local area network (LAN).Type: GrantFiled: May 12, 2000Date of Patent: December 13, 2005Assignee: National Semiconductor CorporationInventors: Abhijit M. Phanse, Peter J. Sallaway, Thulasinath G. Manickam
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Publication number: 20040247022Abstract: A transceiver according to the present invention receives data from a plurality of frequency separated transmission channels from a complementary transmitter and includes an interference filter for correcting for interference from transmitters other than the complementary transmitter. The interference filter, for example, can correct for near-end cross-talk and echo interference filtering and/or far-end crosstalk interference filtering is presented. A transceiver can include a transmitter portion and a receiver portion with one or more receivers coupled to receives signals in the plurality of frequency separated transmission channels. A baseband transmitter can be combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands).Type: ApplicationFiled: June 3, 2003Publication date: December 9, 2004Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Publication number: 20030134607Abstract: A transceiver system according to the present invention transmits data utilizing the baseband and one or more frequency separated transmission bands. A baseband transmitter is combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. A baseband receiver is combined with one or more receivers that receive data from the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands). A transceiver circuit or chip according to the present invention includes a transmitter and a receiver and communicates with a corresponding transceiver chip. In some embodiments, one baseband PAM transmitter is combined with one frequency separated QAM transmitter.Type: ApplicationFiled: December 4, 2002Publication date: July 17, 2003Inventors: Sreeen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Publication number: 20030112896Abstract: A transceiver system according to the present invention transmits data utilizing the baseband and one or more frequency separated transmission bands. A baseband transmitter is combined with one or more transmitters that transmit data into one of the frequency separated transmission bands. A baseband receiver is combined with one or more receivers that receive data from the frequency separated transmission bands. Any combination of modulation systems can be utilized (e.g. PAM for the baseband and QAM for the frequency separated bands). A transceiver circuit or chip according to the present invention includes a transmitter and a receiver and communicates with a corresponding transceiver chip. In some embodiments, one baseband PAM transmitter is combined with one frequency separated QAM transmitter.Type: ApplicationFiled: June 10, 2002Publication date: June 19, 2003Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Publication number: 20030087634Abstract: A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the transmission medium. Additionally, a cross-channel interference filter in a receiver section corrects for cross-channel interference in the communication system. As a result, a very high data-rate transmission can be accomplished with low data-bit transmission on individual channels. A transmitter system and a receiver system are described for the communication system.Type: ApplicationFiled: February 6, 2002Publication date: May 8, 2003Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway, Gerard E. Taylor
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Publication number: 20030081693Abstract: A communication system is disclosed that allows high data-rate transmission of data between components. N-bit parallel data is transmitted in K-frequency separated channels on the transmission medium so as to fully take advantage of the overall bandwidth of the transmission medium. As a result, a very high data-rate transmission can be accomplished with low data-bit transmission on individual channels. A transmitter system and a receiver system are described for the communication system.Type: ApplicationFiled: September 26, 2001Publication date: May 1, 2003Inventors: Sreen A. Raghavan, Thulasinath G. Manickam, Peter J. Sallaway