Patents by Inventor Chi-ping Nee
Chi-ping Nee 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: 8532145Abstract: A system for isolating individual channels in a broadcast signal is provided. The system includes a plurality of multipliers, each having an input and an output. A summer coupled to the outputs of each of the plurality of multipliers is provided to generate an output. A multiplication factor system provides a multiplication factor to each of the multipliers to select a predetermined frequency channel of the input signal.Type: GrantFiled: July 12, 2011Date of Patent: September 10, 2013Assignee: Conexant Systems, Inc.Inventor: Chi-Ping Nee
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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
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Patent number: 8335663Abstract: A system for signal processing is provided. The system includes a steady state processing system for receiving a signal. A general purpose processing system is coupled to the steady state processing system and includes a signal acquisition system for receiving the signal and generating acquisition data. The steady state processing system can receive the acquisition data from the signal acquisition system and use the acquisition data to acquire the signal.Type: GrantFiled: May 23, 2008Date of Patent: December 18, 2012Assignee: Conexant Systems, Inc.Inventors: Chi-Ping Nee, Shachar Kons, Uri Parker, Yoni Baron
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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
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Patent number: 8065593Abstract: An erasures assisted block code decoder and related method are provided. The erasures assisted block code decoder includes a first block decoder, an erasures processor, and a second block code decoder. The first block decoder, for example, a Reed-Solomon decoder, is configured to decode blocks of data elements, e.g., bytes, that were previously affected by bursty errors. The first block decoder is also configured to identify those of such blocks it is unable to decode. The erasures processor is configured to identify, as erasures, data elements in the un-decodable blocks by utilizing, in the erasures identification process, data elements in the decoded blocks that were corrected by the first block decoder. The second block decoder, e.g., the same or different Reed-Solomon decoder, is configured to decode one or more of the un-decodable blocks by utilizing, in the decoding, the erasures identified by the erasures processor.Type: GrantFiled: May 17, 2010Date of Patent: November 22, 2011Assignee: Trident Microsystems (Far East) Ltd.Inventors: Chi-Ping Nee, Abraham Krieger, Shachar Kons, Chun-Hsuan Kuo
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Publication number: 20110268138Abstract: A system for isolating individual channels in a broadcast signal is provided. The system includes a plurality of multipliers, each having an input and an output. A summer coupled to the outputs of each of the plurality of multipliers is provided to generate an output. A multiplication factor system provides a multiplication factor to each of the multipliers to select a predetermined frequency channel of the input signal.Type: ApplicationFiled: July 12, 2011Publication date: November 3, 2011Inventor: Chi-Ping Nee
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Patent number: 7983306Abstract: A system for isolating individual channels in a broadcast signal is provided. The system includes a plurality of multipliers, each having an input and an output. A summer coupled to the outputs of each of the plurality of multipliers is provided to generate an output. A multiplication factor system provides a multiplication factor to each of the multipliers to select a predetermined frequency channel of the input signal.Type: GrantFiled: July 23, 2008Date of Patent: July 19, 2011Assignee: Conexant Systems, Inc.Inventor: Chi-Ping Nee
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Publication number: 20110142175Abstract: A modem for use with a computer having a demodulator and a decoder, the modem comprises a hardware interface; a demodulator front-end having a first input and a first output, the first output of the demodulator front-end being configured to interface with the demodulator of the computer and to provide a demodulated front-end signal to the demodulator over the hardware interface; and a forward error correction (FEC) unit having a second input and a second output, the second input of the FEC unit being configured to interface with the demodulator of the computer and to receive a demodulated signal from the demodulator over the hardware interface, the demodulated signal being a demodulation of the demodulated front-end signal, and the second output of the FEC unit being configured to interface with the decoder of the computer and to provide an FEC signal to the decoder over the hardware interface.Type: ApplicationFiled: February 11, 2011Publication date: June 16, 2011Inventor: Chi-Ping Nee
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Patent number: 7907660Abstract: A modem for use with a computer having a demodulator and a decoder, the modem comprises a hardware interface; a demodulator front-end having a first input and a first output, the first output of the demodulator front-end being configured to interface with the demodulator of the computer and to provide a demodulated front-end signal to the demodulator over the hardware interface; and a forward error correction (FEC) unit having a second input and a second output, the second input of the FEC unit being configured to interface with the demodulator of the computer and to receive a demodulated signal from the demodulator over the hardware interface, the demodulated signal being a demodulation of the demodulated front-end signal, and the second output of the FEC unit being configured to interface with the decoder of the computer and to provide an FEC signal to the decoder over the hardware interface.Type: GrantFiled: February 26, 2008Date of Patent: March 15, 2011Assignee: Conexant Systems, Inc.Inventor: Chi-Ping Nee
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Publication number: 20100229070Abstract: An erasures assisted block code decoder and related method are provided. The erasures assisted block code decoder comprises a first block decoder, an erasures processor, and a second block code decoder. The first block decoder, for example, a Reed-Solomon decoder, is configured to decode blocks of data elements, e.g., bytes, that were previously affected by bursty errors. The first block decoder is also configured to identify those of such blocks it is unable to decode. The erasures processor is configured to identify, as erasures, data elements in the un-decodable blocks by utilizing, in the erasures identification process, data elements in the decoded blocks that were corrected by the first block decoder. The second block decoder, e.g., the same or different Reed-Solomon decoder, is configured to decode one or more of the un-decodable blocks by utilizing, in the decoding, the erasures identified by the erasures processor.Type: ApplicationFiled: May 17, 2010Publication date: September 9, 2010Inventors: Chi-Ping Nee, Abraham Krieger, Shachar Kons, Chun-Hsuan Kuo
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Patent number: 7734984Abstract: An erasures assisted block code decoder and related method are provided. The erasures assisted block code decoder includes a first block decoder, an erasures processor, and a second block code decoder. The first block decoder, for example, a Reed-Solomon decoder, is configured to decode blocks of data elements, e.g., bytes, that were previously affected by bursty errors. The first block decoder is also configured to identify those of such blocks it is unable to decode. The erasures processor is configured to identify, as erasures, data elements in the un-decodable blocks by utilizing, in the erasures identification process, data elements in the decoded blocks that were corrected by the first block decoder. The second block decoder, e.g., the same or different Reed-Solomon decoder, is configured to decode one or more of the un-decodable blocks by utilizing, in the decoding, the erasures identified by the erasures processor.Type: GrantFiled: November 10, 2006Date of Patent: June 8, 2010Assignee: Trident Microsystems (Far East) Ltd.Inventors: Chi-Ping Nee, Abraham Krieger, Shachar Kons, Chun-Hsuan Kuo
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Patent number: 7733252Abstract: A system for signal processing is provided. A sampling delay system generates a plurality of sampling delay values. A plurality of programmable delays each receives one of the sample delay values. A plurality of sample and hold units, each coupled to one of the programmable delays, generates a sample of a received signal in response to an input from the programmable delay.Type: GrantFiled: June 24, 2008Date of Patent: June 8, 2010Assignee: Conexant Systems, Inc.Inventors: Chi-Ping Nee, Mike C. Wang
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Patent number: 7720177Abstract: A known sequence of symbols is located within a transmitted sequence of symbols by estimating the phase differences between offset symbols within a portion or more of the transmitted sequence, estimating the phase differences between offset symbols in the known sequence, and determining that the symbols within the portion or more of the transmitted sequence are the known sequence if the phase difference estimates determined from the symbols within the portion or more of the transmitted sequence are substantially equal to the phase difference estimates determined from the known sequence.Type: GrantFiled: July 28, 2005Date of Patent: May 18, 2010Assignee: Trident Microsystems (Far East) Ltd.Inventors: Chi-Ping Nee, Durgaprasad Kashinath Shamain, Gdaliahou Kalit, Abraham Krieger
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Publication number: 20100020826Abstract: A system for isolating individual channels in a broadcast signal is provided. The system includes a plurality of multipliers, each having an input and an output. A summer coupled to the outputs of each of the plurality of multipliers is provided to generate an output. A multiplication factor system provides a multiplication factor to each of the multipliers to select a predetermined frequency channel of the input signal.Type: ApplicationFiled: July 23, 2008Publication date: January 28, 2010Inventor: Chi-Ping Nee
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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
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Publication number: 20090315747Abstract: A system for signal processing is provided. A sampling delay system generates a plurality of sampling delay values. A plurality of programmable delays each receives one of the sample delay values. A plurality of sample and hold units, each coupled to one of the programmable delays, generates a sample of a received signal in response to an input from the programmable delay.Type: ApplicationFiled: June 24, 2008Publication date: December 24, 2009Inventors: Chi-Ping NEE, Mike C. WANG
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Publication number: 20090292507Abstract: A system for signal processing is provided. The system includes a steady state processing system for receiving a signal. A general purpose processing system is coupled to the steady state processing system and includes a signal acquisition system for receiving the signal and generating acquisition data. The steady state processing system can receive the acquisition data from the signal acquisition system and use the acquisition data to acquire the signal.Type: ApplicationFiled: May 23, 2008Publication date: November 26, 2009Inventors: Chi-Ping Nee, Shachar Kons, Uri Parker, Yoni Baron
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Patent number: 7623580Abstract: A simultaneous multiple channel receiver (“SMCR”) for receiving a combined signal having a plurality of carrier signals, where each carrier signal in the plurality of carriers signals corresponds to a frequency channel, and in response, simultaneously producing a plurality of output data stream signals, is disclosed. The SMCR may include a down-converter front-end capable of receiving the combined signal, a plurality of digital signal processors, wherein each digital signal processor of the plurality of digital signal processors is capable of producing an output data stream signal of the plurality of output data stream signals, and a multi-band filter in signal communication with both the down-converter front-end and the plurality of digital signal processors.Type: GrantFiled: June 29, 2004Date of Patent: November 24, 2009Assignee: NXP B.V.Inventors: Kendal McNaught-Davis Hess, Manjit S. Gill, Donald Brian Eidson, Chi-Ping Nee, Mats Lindstrom, Abraham Krieger, Fred Harris
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Publication number: 20090217334Abstract: A modem for use with a computer having a demodulator and a decoder, the modem comprises a hardware interface; a demodulator front-end having a first input and a first output, the first output of the demodulator front-end being configured to interface with the demodulator of the computer and to provide a demodulated front-end signal to the demodulator over the hardware interface; and a forward error correction (FEC) unit having a second input and a second output, the second input of the FEC unit being configured to interface with the demodulator of the computer and to receive a demodulated signal from the demodulator over the hardware interface, the demodulated signal being a demodulation of the demodulated front-end signal, and the second output of the FEC unit being configured to interface with the decoder of the computer and to provide an FEC signal to the decoder over the hardware interface.Type: ApplicationFiled: February 26, 2008Publication date: August 27, 2009Applicant: CONEXANT SYSTEMS, INC.Inventor: Chi-Ping Nee
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Publication number: 20080069250Abstract: Various embodiments of multipath processing systems and methods are disclosed. One method embodiment, among others, comprises the steps of providing a frequency domain channel response corresponding to a received signal, and applying a fast Fourier transform (FFT) on the frequency domain channel response to provide multi-path channel information.Type: ApplicationFiled: September 18, 2006Publication date: March 20, 2008Inventor: Chi-Ping Nee