Patents by Inventor Gadi Kalit
Gadi Kalit 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: 8554203Abstract: A satellite signal demodulator is configured to use frequency-based channel scanning to sense the presence of a channel and to obtain the frequency profile of the channel. Once the channel is identified and the profile is obtained, channel extraction is used to identify the frequency parameters for a given channel. A coarse parameter estimation is performed to obtain a coarse estimate of the symbol rate (SR) and the center frequency (fc) of the channel. The coarse estimation can then be followed by a fine estimation of the symbol rate and center frequency (fc), using a bit tracking loop (BTL) lock indicator.Type: GrantFiled: September 7, 2012Date of Patent: October 8, 2013Assignee: Conexant Systems, Inc.Inventors: Prasad Shamain, Chi-ping Nee, Gadi Kalit
-
Patent number: 8549377Abstract: An LDPC decoder, applicable to LDPC codes including codes where check nodes within the same group are connected to a common bit node, successively processes groups of check nodes in a particular iteration, including updating bit nodes in that same iteration responsive to messages generated in response to processing a group of check nodes. Within an iteration, the LDPC decoder may also track the number of unresolved parity check equations, and cease iterating or output to an outer block decoder if that number reaches a local minima or standard minimum, falls below a predetermined threshold, or its rate of change falls below a predetermined threshold, indicating a lack of convergence or false convergence condition. The LDPC decoder may also provide a feedback assist to a demodulator. Also, a novel memory configuration may store messages generated by the decoder in the course of check node processing.Type: GrantFiled: August 2, 2010Date of Patent: October 1, 2013Assignee: Entropic Communications, Inc.Inventors: Shachar Kons, Yoav GoldenBerg, Gadi Kalit, Eran Arad, Shimon Gur, Ronen Hershkovitz
-
Publication number: 20120329383Abstract: A satellite signal demodulator is configured to use frequency-based channel scanning to sense the presence of a channel and to obtain the frequency profile of the channel. Once the channel is identified and the profile is obtained, channel extraction is used to identify the frequency parameters for a given channel. A coarse parameter estimation is performed to obtain a coarse estimate of the symbol rate (SR) and the center frequency (fc) of the channel. The coarse estimation can then be followed by a fine estimation of the symbol rate and center frequency (fc), using a bit tracking loop (BTL) lock indicator.Type: ApplicationFiled: September 7, 2012Publication date: December 27, 2012Applicant: CONEXANT SYSTEMS, INC.Inventors: Prasad Shamain, Chi-Ping Nee, Gadi Kalit
-
Patent number: 8270896Abstract: A satellite signal demodulator is configured to use frequency-based channel scanning to sense the presence of a channel and to obtain the frequency profile of the channel. Once the channel is identified and the profile is obtained, channel extraction is used to identify the frequency parameters for a given channel. A coarse parameter estimation is performed to obtain a coarse estimate of the symbol rate (SR) and the center frequency (fc) of the channel. The coarse estimation can then be followed by a fine estimation of the symbol rate and center frequency (fc), using a bit tracking loop (BTL) lock indicator.Type: GrantFiled: May 1, 2006Date of Patent: September 18, 2012Assignee: Conexant Systems, Inc.Inventors: Prasad Shamain, Chi-Ping Nee, Gadi Kalit
-
Patent number: 7958424Abstract: A multi-channel decoder system has a decoder core at least a portion of which is configurable as a LDPC decoder that, during decoding processing, divides check nodes of a node representation of a LDPC code into a plurality of groups, and, during an iteration, sequentially processes the groups while processing in parallel the check nodes within each group, thus improving decoding throughput.Type: GrantFiled: December 16, 2005Date of Patent: June 7, 2011Assignee: Trident Microsystems (Far East) Ltd.Inventors: Shachar Kons, Gadi Kalit, Eran Arad, Shimon Gur, Yoav GoldenBerg, Abraham Krieger
-
Patent number: 7770090Abstract: An LDPC decoder, applicable to LDPC codes including codes where check nodes within the same group are connected to a common bit node, successively processes groups of check nodes in a particular iteration, including updating bit nodes in that same iteration responsive to messages generated in response to processing a group of check nodes. Within an iteration, the LDPC decoder may also track the number of unresolved parity check equations, and cease iterating or output to an outer block decoder if that number reaches a local minima or standard minimum, falls below a predetermined threshold, or its rate of change falls below a predetermined threshold, indicating a lack of convergence or false convergence condition. The LDPC decoder may also provide a feedback assist to a demodulator. Also, a novel memory configuration may store messages generated by the decoder in the course of check node processing.Type: GrantFiled: December 16, 2005Date of Patent: August 3, 2010Assignee: Trident Microsystems (Far East) Ltd.Inventors: Shachar Kons, Yoav GoldenBerg, Gadi Kalit, Eran Arad, Shimon Gur, Ronen Hershkovitz
-
Publication number: 20100003915Abstract: A satellite signal demodulator is configured to use frequency-based channel scanning to sense the presence of a channel and to obtain the frequency profile of the channel. Once the channel is identified and the profile is obtained, channel extraction is used to identify the frequency parameters for a given channel. A coarse parameter estimation is performed to obtain a coarse estimate of the symbol rate (SR) and the center frequency (fc) of the channel. The coarse estimation can then be followed by a fine estimation of the symbol rate and center frequency (fc), using a bit tracking loop (BTL) lock indicator.Type: ApplicationFiled: May 1, 2006Publication date: January 7, 2010Applicant: CONEXANT SYSTEMS, INC.Inventors: Prasad Shamain, Chi-ping Nee, Gadi Kalit
-
Publication number: 20070011564Abstract: A multi-channel decoder system has a decoder core, at least a portion of which comprises or is configurable as a LDPC decoder, a plurality of channels to and from the decoder core, and control logic for controlling application of the decoder core to data carried by one or more of the channels.Type: ApplicationFiled: December 16, 2005Publication date: January 11, 2007Inventors: Shachar Kons, Gadi Kalit, Eran Arad, Shimon Gur, Yoav Goldenberg, Abraham Krieger
-
Patent number: 6724829Abstract: A system for use in transmitting digital data includes a modulation element that receives block of digital data and modulates each block using one of at least two modulation types, such as QPSK and k-QAM, where k is a power of 2. The system also includes an automatic power control element that applies a selected gain value to each of the blocks of data before transmission. The automatic power control element selects each of the gain values from a group of at least two predetermined gain values, each of which corresponds to one of the modulation types. In general, the modulation types have different associated average power levels, and the power control element selects the gain values to maintain substantially constant average transmission power level among all of the blocks of data.Type: GrantFiled: March 18, 1999Date of Patent: April 20, 2004Assignee: Conexant Systems, Inc.Inventors: Shimon Tzukerman, Gadi Kalit, Ladd S. El Wardani