Patents by Inventor Glenn Chang

Glenn Chang 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: 9742488
    Abstract: A satellite reception assembly may comprise a first module operable to demodulate a first one or more channels of a signal output by a direct broadcast satellite (DBS) low noise block downconverter (LNB). The first module may output a signal to a second module which may demodulate a second one or more channels of the signal output by the DBS LNB. The second module may be installed after the satellite reception assembly has been deployed upon a number of clients served by the satellite reception assembly reaching a threshold.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 22, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Publication number: 20170214478
    Abstract: Methods and systems are provided for use of tunable bandwidths. An example system may comprises a plurality of filters, with each of filters being configured for filtering signals corresponding to a particular frequency band associated with a particular stream. One or more adjustments may be determined and applied to one or more of the plurality of filters. The adjustments may comprise modifications to at least one frequency band associated with at least one of the plurality of filters. Leakage affecting the plurality of filters may be measured or estimated, and a compensation adjustment applicable to particular transmitted and/or received signals may be determined based on measured or estimated leakage. The leakage may be estimated based on analysis of digital baseband signals corresponding to transmitted and/or received signals.
    Type: Application
    Filed: January 10, 2017
    Publication date: July 27, 2017
    Inventors: Glenn Chang, Sridhar Ramesh, Tim Gallagher
  • Patent number: 9685983
    Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: June 20, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Subramanian Anantharaman Chandrasekarapuram, Anand Anandakumar, Stephane Laurent-Michel, Sheng Ye, Raja Pullela, Glenn Chang, Vamsi Paidi
  • Publication number: 20170171569
    Abstract: Methods and systems are provided for loop-through for multi-chip receivers. An example system may comprise a plurality of receiver chips, with each one of the plurality of receiver chips being operable to generate a corresponding output, and a first one of the plurality of receiver chips is operable to generate a loop-through feed based on processing of an input feed to the system, and each of remaining one or more receiver chips may be operable to process the loop-through feed to generate its corresponding output. The processing of the input feed in the first chip may comprise applying one or more processing functions may comprise one or both of amplification and analog-to-digital conversion. Each of the remaining one or more receiver chips may be operable to generate its corresponding output by applying one or more processing functions, comprising one or both of channelization and demodulation.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 15, 2017
    Inventors: Glenn Chang, Sridhar Ramesh, Curtis Ling
  • Patent number: 9634754
    Abstract: An Internet protocol low noise block downconverter (IP LNB), which may be within a satellite reception assembly, may be operable to determine location information and time information of the IP LNB, and may communicate the determined location information and the corresponding time information to a wireless communication device communicatively coupled to the IP LNB. The communicated location information may be configured to enable the wireless communication device to determine its location based on the determined location information and the corresponding time information. The IP LNB may determine the location information and/or the time information of the IP LNB based on global navigation satellite system (GNSS) signals, which may be received via the satellite reception assembly and may be processed via the IP LNB. The IP LNB may provide services based on the determined location information and/or the determined time information of the IP LNB.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: April 25, 2017
    Assignee: MAXLINEAR, INC.
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Patent number: 9635310
    Abstract: Methods and systems are provided for band translation with protection. A signal processing circuitry (chip) may be configured to handle a plurality of signals, comprising at least a first signal corresponding to internal communication within an in-premises network and at least a second signal originating from a source external to the in-premises network; and to process on-chip the plurality of input signals, to generate one or more output signals. In this regard, at least one output signal may comprise components corresponding to the first signal and the second signal; and the processing may be configured to mitigate on-chip, during generating of the one or more outputs, at least one effect of including in the at least one output signal a first component corresponding to one of the first signal and the second signal on a second component corresponding to the other one of the first signal and the second signal.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: April 25, 2017
    Assignee: MAXLINEAR, INC.
    Inventors: Glenn Chang, Raja Pullela, Sridhar Ramesh
  • Publication number: 20170111105
    Abstract: A satellite reception assembly that provides satellite television and/or radio service to a customer premises may comprise a wireless interface via which it can communicate with other satellite reception assemblies. Wireless connections between satellite reception assemblies may be utilized for providing satellite content between different satellite customer premises. Wireless connections between satellite reception assemblies may be utilized for offloading traffic from other network connections.
    Type: Application
    Filed: July 11, 2016
    Publication date: April 20, 2017
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Publication number: 20170041090
    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
    Type: Application
    Filed: October 19, 2016
    Publication date: February 9, 2017
    Inventors: Glenn Chang, Raja Pullela, Madhukar Reddy, Timothy Gallagher, Shanta Murthy Prem Swaroop, Curtis Ling, Vamsi Paidi, Wenjian Chen
  • Patent number: 9544076
    Abstract: A transceiver system may be configured to provide tunable bandwidths. The transceiver may comprise a signal processing component and a filtering component, which may comprise a plurality of filters. The signal processing component may determine one or more adjustments that are applicable to one or both of a first filter that is configured for filtering signals corresponding to a first frequency band associated with a first stream, and a second filter that is configured for filtering signals corresponding to a second frequency band associated with a second stream. The one or more adjustments may correspond to modifications in one or both of the first frequency band and the second frequency band. The one or more adjustments may be communicated to the filtering component, which may apply the adjustments to one or more of the plurality of filters.
    Type: Grant
    Filed: May 4, 2013
    Date of Patent: January 10, 2017
    Assignee: MAXLINEAR, INC.
    Inventors: Glenn Chang, Sridhar Ramesh, Timothy Gallagher
  • Patent number: 9531419
    Abstract: Methods and systems are provided for multi-chip receivers with loop-through feeds. A receiver that comprises plurality of chips may receive one or more input feeds, with each of the chips generating a corresponding output comprising data (e.g., channels) extracted from the one or more input feeds. Only a first chip may handle reception and/or initial processing of the one or more input feeds, with each one of the remaining chips processing a loop-through feed generated in the first chip, in order to generate the corresponding output of that chip. The loop-through feed may be generated based on the one or more input feeds. In this regard, the loop-through feed may comprise at least one of the one or more input feeds that is partially processed in the first one of the plurality of chips.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: December 27, 2016
    Assignee: MAXLINEAR, INC.
    Inventors: Glenn Chang, Sridhar Ramesh, Curtis Ling
  • Patent number: 9509422
    Abstract: A direct broadcast satellite (DBS) reception assembly may comprise an integrated circuit that is configurable between or among a plurality of configurations based on content requested by client devices served by the DBS reception assembly. In a first configuration, multiple satellite frequency bands may be digitized by the integrated circuit as a single wideband signal. In a second configuration, the satellite frequency bands may be digitized by the integrated circuit as a plurality of separate narrowband signals. The integrated circuit may comprise a plurality of receive paths, each of the receive chains comprising a respective one of a plurality of low noise amplifiers and a plurality of analog-to-digital converters.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: November 29, 2016
    Assignee: MAXLINEAR, INC.
    Inventors: Glenn Chang, Raja Pullela, Madhukar Reddy, Timothy Gallagher, Shanta Murthy Prem Swaroop, Curtis Ling, Vamsi Paidi, Wenjian Chen
  • Publication number: 20160329954
    Abstract: A satellite dish assembly may comprise a broadcast receive module and a basestation module. The broadcast receive module may be operable to receive a satellite signal, recover media carried in the satellite signal, and output the media. The basestation module may be operable to accept the media output by the broadcast receive module and transmit the media in accordance with one or more wireless protocols. In being conveyed from the broadcast receive module to the basestation, the media content may not traverse any wide area network connection. The one or more wireless protocols may comprise one or more of: a cellular protocol and IEEE 802.11 protocol. The satellite dish assembly may comprise a routing module that may be operable to route data between the broadcast receive module, the basestation, and a gateway.
    Type: Application
    Filed: July 15, 2016
    Publication date: November 10, 2016
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Publication number: 20160269863
    Abstract: An Internet protocol low noise block downconverter (IP LNB), which may be within a satellite reception assembly, may be operable to determine location information and time information of the IP LNB, and may communicate the determined location information and the corresponding time information to a wireless communication device communicatively coupled to the IP LNB. The communicated location information may be configured to enable the wireless communication device to determine its location based on the determined location information and the corresponding time information. The IP LNB may determine the location information and/or the time information of the IP LNB based on global navigation satellite system (GNSS) signals, which may be received via the satellite reception assembly and may be processed via the IP LNB. The IP LNB may provide services based on the determined location information and/or the determined time information of the IP LNB.
    Type: Application
    Filed: April 26, 2016
    Publication date: September 15, 2016
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Publication number: 20160261298
    Abstract: Receiver architectures and methods of processing harmonic rich input signals employing harmonic suppression mixers are disclosed herein. The disclosed receivers, mixers, and methods enable a receiver to achieve the advantages of switching mixers while greatly reducing the mixer response to the undesired harmonics. A harmonic mixer can include a plurality of mixers coupled to an input signal. A plurality of phases of a local oscillator signal can be generated from a single local oscillator output. Each of the phases can be used to drive an input of one of the mixers. The mixer outputs can be combined to generate a frequency converted output that has harmonic rejection.
    Type: Application
    Filed: May 16, 2016
    Publication date: September 8, 2016
    Inventors: Kishore Seendripu, Raymond Montemayor, Sheng Ye, Glenn Chang, Curtis Ling
  • Patent number: 9425887
    Abstract: A satellite dish assembly may comprise a broadcast receive module and a basestation module. The broadcast receive module may be operable to receive a satellite signal, recover media carried in the satellite signal, and output the media. The basestation module may be operable to accept the media output by the broadcast receive module and transmit the media in accordance with one or more wireless protocols. In being conveyed from the broadcast receive module to the basestation, the media content may not traverse any wide area network connection. The one or more wireless protocols may comprise one or more of: a cellular protocol and IEEE 802.11 protocol. The satellite dish assembly may comprise a routing module that may be operable to route data between the broadcast receive module, the basestation, and a gateway.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: August 23, 2016
    Assignee: MAXLINEAR, INC.
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Patent number: 9391689
    Abstract: A satellite reception assembly that provides satellite television and/or radio service to a customer premises may comprise a wireless interface via which it can communicate with other satellite reception assemblies. Wireless connections between satellite reception assemblies may be utilized for providing satellite content between different satellite customer premises. Wireless connections between satellite reception assemblies may be utilized for offloading traffic from other network connections.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: July 12, 2016
    Assignee: Maxlinear, Inc.
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Publication number: 20160198221
    Abstract: One or more circuits for use in a transceiver that is collocated with a satellite dish, may receive a satellite signal carrying media content, and remove content protection from the received media content. After removing the first content protection, the one or more circuits may apply second content protection to the media content. The content protection applied by the one or more circuits may adhere to a different protocol, utilize different keys, and/or otherwise be distinguishable from the content protection that was removed. After applying the content protection, the one or more circuits may transmit the media content onto one or more links between the satellite dish and one or more client devices. The removal of the content protection may comprise descrambling and/or decrypting the media content. The application of the content protection may comprise scrambling and/or encrypting the media content.
    Type: Application
    Filed: August 31, 2015
    Publication date: July 7, 2016
    Inventors: Brian Sprague, Glenn Chang, Timothy Gallagher, Sridhar Ramesh
  • Publication number: 20160182160
    Abstract: Receiver architectures and methods of processing harmonic rich input signals employing harmonic suppression mixers are disclosed herein. The disclosed receivers, mixers, and methods enable a receiver to achieve the advantages of switching mixers while greatly reducing the mixer response to the undesired harmonics. A harmonic mixer can include a plurality of mixers coupled to an input signal. A plurality of phases of a local oscillator signal can be generated from a single local oscillator output. Each of the phases can be used to drive an input of one of the mixers. The mixer outputs can be combined to generate a frequency converted output that has harmonic rejection.
    Type: Application
    Filed: February 29, 2016
    Publication date: June 23, 2016
    Inventors: Kishore Seendripu, Raymond Montemayor, Sheng Ye, Glenn Chang, Curtis Ling
  • Publication number: 20160128136
    Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.
    Type: Application
    Filed: November 2, 2015
    Publication date: May 5, 2016
    Inventors: Anand Anandakumar, Sheng Ye, Stephane Laurent-Michel, Glenn Chang, Raja Pullela, Vamsi Paidi
  • Publication number: 20160127119
    Abstract: A system comprises a microwave backhaul outdoor unit having a first resonant circuit, phase error determination circuitry, and phase error compensation circuitry. The first resonant circuit is operable to generate a first signal characterized by a first amount of phase noise and a first amount of temperature stability. The phase error determination circuitry is operable to generate a phase error signal indicative of phase error between the first signal and a second signal, wherein the second signal is characterized by a second amount of phase noise that is greater than the first amount of phase noise, and the second signal is characterized by a second amount of temperature instability that is less than the first amount of temperature instability. The phase error compensation circuitry is operable to adjust the phase of a data signal based on the phase error signal, the adjustment resulting in a phase compensated signal.
    Type: Application
    Filed: December 21, 2015
    Publication date: May 5, 2016
    Inventors: Subramanian Anantharaman Chandrasekarapuram, Anand Anandakumar, Stephane Laurent-Michel, Sheng Ye, Raja Pullela, Glenn Chang, Vamsi Paidi