Patents by Inventor Weijun Tan

Weijun Tan 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: 10302086
    Abstract: An exhaust bearing seat, a screw compressor and an air-conditioning unit are provided. The exhaust bearing seat is provided with a discharge port, wherein an opening of the discharge port is orientated in such a way that, if the exhaust bearing seat is sheathed in a housing, gas exhausted from the discharge port has a component which rotates along an inner wall of the housing and around an axial direction of the housing. The discharge port is able to guide the gas flow to rotationally flow along the inner wall of the housing body and around the axial direction of the housing, which extends the flow path of the gas flow inside the housing, and facilitates the reduction of noise of the gas flow pulsation.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: May 28, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Qiaoming Yang, Rihua Li, Tianyi Zhang, Guanghui Xia, Gongsheng Tan, Weijun Lin, Hao Long, Yushi Bi, Yanhai Peng, Kang Xu
  • Patent number: 10302087
    Abstract: A compressor exhaust structure includes a machine body, an exhaust bearing seat provided at an exhaust end of the machine body and an oil separating barrel covering the exhaust bearing seat, the exhaust bearing seat is provided with a first exhaust chamber, the machine body is provided with a second exhaust chamber, a third exhaust chamber is formed between the exhaust bearing seat and an inner wall of the oil separating barrel, the first exhaust chamber is in fluid communication with the second exhaust chamber, the second exhaust chamber is in fluid communication with the third exhaust chamber, and the third exhaust chamber is in fluid communication with a discharge port of the oil separating barrel. The compressor exhaust structure increases the flow path of the gas flow, facilitates the insulation of gas flow noise and reduces gas flow pulsation.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: May 28, 2019
    Assignee: Gree Electric Appliances, Inc. of Zhuhai
    Inventors: Qiaoming Yang, Rihua Li, Tianyi Zhang, Guanghui Xia, Gongsheng Tan, Weijun Lin, Hao Long, Yushi Bi, Yanhai Peng, Kang Xu
  • Patent number: 9548081
    Abstract: Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for data processing to identify a defect on a medium.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: January 17, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Weijun Tan, Shaohua Yang
  • Patent number: 9525436
    Abstract: A data detector includes a branch metric calculator operable to calculate branch metrics for transitions between states in a trellis for the data detector, and a pruning circuit operable to prune prohibited states from the trellis. The states in the trellis comprise basic states and extended states, where the extended states have a greater number of bits than the basic states.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: December 20, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Weijun Tan, Bruce A. Wilson, Kelly K. Fitzpatrick, Seongwook Jeong
  • Publication number: 20160210996
    Abstract: Systems, methods, devices, circuits for data processing, and more particularly to systems and methods for data processing to identify a defect on a medium.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Inventors: Weijun Tan, Shaohua Yang
  • Publication number: 20160191083
    Abstract: A data detector includes a branch metric calculator operable to calculate branch metrics for transitions between states in a trellis for the data detector, and a pruning circuit operable to prune prohibited states from the trellis. The states in the trellis comprise basic states and extended states, where the extended states have a greater number of bits than the basic states.
    Type: Application
    Filed: December 24, 2014
    Publication date: June 30, 2016
    Inventors: Weijun Tan, Bruce A. Wilson, Kelly K. Fitzpatrick, Seongwook Jeong
  • Patent number: 9324363
    Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for data detection. As one example, a data processing system is described that includes a variance calculation circuit operable to calculate a variance of a data input; and a branch metric calculation circuit operable to calculate a branch metric based at least in part on the variance.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: April 26, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Weijun Tan, Shaohua Yang, Xuebin Wu
  • Patent number: 9281007
    Abstract: A communication channel structure and a decoding method supported by such a communication channel structure are disclosed. Such a communication channel includes a digital filter configured for filtering an input signal and two quantizer configured for quantizing the filtered signal. A first quantizer is utilized to quantize the filtered signal to produce a first quantized sample having a first precision and a second quantizer is utilized to quantize the filtered signal to produce a second quantized sample having a second precision, wherein the second precision is different from the first precision. The communication channel also includes an iterative decoder configured for utilizing the first quantized sample for a first global iteration of a decoding process and utilizing the second quantized sample for at least one subsequent global iteration of the decoding process.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 8, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Xuebin Wu, Yang Han, Weijun Tan, Shaohua Yang
  • Patent number: 9252989
    Abstract: A data dependent equalizer circuit includes a plurality of noise prediction filters. Respective ones of the noise prediction filters are configured to filter noise in sample data for at least one predetermined non-return to zero (NRZ) condition. A plurality of equalizers is communicatively coupled with the plurality of noise prediction filters. Respective ones of the plurality of equalizers are configured to yield equalized sample data that corresponds to the at least one predetermined NRZ condition for one or more of the noise prediction filters.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: February 2, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jin Lu, Shaohua Yang, Weijun Tan
  • Patent number: 9245586
    Abstract: Various systems and methods for media defect detection.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: January 26, 2016
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Wu Chang, Fan Zhang, Weijun Tan, Shaohua Yang
  • Patent number: 9202514
    Abstract: An apparatus for calibrating a noise predictive filter includes a noise-predictive filter operable to filter digital data samples to yield filtered data samples, a calibration circuit operable to calculate tap coefficients for the noise-predictive filter based at least in part on the digital data samples, and a gating circuit operable to select a portion of the digital data samples for use by the calibration circuit in calculating the tap coefficients.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: December 1, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Jianzhong Huang, Shaohua Yang, Haitao Xia, Fuminori Sai, Weijun Tan
  • Patent number: 9202519
    Abstract: A communication system and a noise predictive calibration method are disclosed. The communication system includes a decoder configured to decode an input signal, wherein the decoder produces one of: a converged data output when the decoder decodes the input signal successfully, and a non-converged data output when the decoder decodes the input signal unsuccessfully. The communication system also includes a convergence monitor configured to determine a calibration procedure based on at least one of: a number of times where the decoder decodes successfully, and a number of times where the decoder decodes unsuccessfully. A noise predictive calibration circuit is configured to utilize output produced by the decoder without qualification when the convergence monitor indicates utilization of a first calibration procedure.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: December 1, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Bruce A. Wilson, Haitao Xia, Seongwook Jeong, Weijun Tan
  • Patent number: 9166622
    Abstract: The present invention is a programmable QC LDPC encoder for encoding user data. The encoder may be configurable for implementation with a read channel. The encoder may include a plurality of barrel shifter circuits. The barrel shifter circuits are configured for generating a plurality of parity bits based on interleaved user bits received by the encoder. The barrel shifter circuits are further configured for outputting the parity bits. The encoder may further include an encoder interleaver memory. The encoder interleaver memory may be communicatively coupled with the barrel shifter circuits and may receive the parity bits output from the barrel shifter circuits. The encoder interleaver may be configured for interleaving the parity bits. Further, the encoder may be configured for outputting the interleaved parity bits to a multiplexer. The barrel shifter circuits may generate the plurality of parity bits via an encoding algorithm: p=u*GT.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 20, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Shaohua Yang, Changyou Xu, Richard Rauschmayer, Hao Zhong, Weijun Tan
  • Publication number: 20150279421
    Abstract: A communication system and a noise predictive calibration method are disclosed. The communication system includes a decoder configured to decode an input signal, wherein the decoder produces one of: a converged data output when the decoder decodes the input signal successfully, and a non-converged data output when the decoder decodes the input signal unsuccessfully. The communication system also includes a convergence monitor configured to determine a calibration procedure based on at least one of: a number of times where the decoder decodes successfully, and a number of times where the decoder decodes unsuccessfully. A noise predictive calibration circuit is configured to utilize output produced by the decoder without qualification when the convergence monitor indicates utilization of a first calibration procedure.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 1, 2015
    Inventors: Bruce A. Wilson, Haitao Xia, Seongwook Jeong, Weijun Tan
  • Patent number: 9129653
    Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for coasting one or more calibration loops based upon identification of a probability of data inaccuracies. One embodiment is a data processing system that includes: a defect detector circuit operable to identify a defect region during a first pass processing of a received data set; a defect location buffer operable to maintain an indication of the defect region in the received data set; and a calibration circuit operable to adaptively update a calibration output during a second pass processing of the received data set, where updating the calibration output is disabled for one or more samples of the received data set corresponding to the indication of the defect region.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: September 8, 2015
    Assignee: Avago Technologies General IP (Singapore) PTE. LTD.
    Inventors: Shaohua Yang, Weijun Tan, Jefferson Singlelon, Xuebin Wu
  • Patent number: 9110821
    Abstract: Various embodiments of the present invention provide systems and methods for media defect detection. As an example, a method is discusses that includes: receiving a decoded output including a first multi-bit symbol; receiving a detected output including a second multi-bit bit symbol; calculating values based upon respective combinations of the first multi-bit symbol and the second multi-bit symbols; calculating a first product and the second product based upon some of the aforementioned values; and asserting a suspect symbol indicator indicating a probability that the symbol is incorrect when at least one of the first product and the second product is negative.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: August 18, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Weijun Tan, Fan Zhang, Shaohua Yang
  • Publication number: 20150228303
    Abstract: A communication channel structure and a decoding method supported by such a communication channel structure are disclosed. Such a communication channel includes a digital filter configured for filtering an input signal and two quantizer configured for quantizing the filtered signal. A first quantizer is utilized to quantize the filtered signal to produce a first quantized sample having a first precision and a second quantizer is utilized to quantize the filtered signal to produce a second quantized sample having a second precision, wherein the second precision is different from the first precision. The communication channel also includes an iterative decoder configured for utilizing the first quantized sample for a first global iteration of a decoding process and utilizing the second quantized sample for at least one subsequent global iteration of the decoding process.
    Type: Application
    Filed: March 5, 2014
    Publication date: August 13, 2015
    Applicant: LSI Corporation
    Inventors: Xuebin Wu, Yang Han, Weijun Tan, Shaohua Yang
  • Patent number: 9098105
    Abstract: Aspects of the disclosure pertain to a system and method for providing dynamic y-buffer size adjustment for retained sector reprocessing (RSR). The system and method implement dynamic y-buffer size adjustment for RSR for promoting improved Sector Failure Rate (SFR) performance of the system. The system is a read channel system.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: August 4, 2015
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Fan Zhang, Yang Han, Weijun Tan, Shaohua Yang
  • Patent number: 8996970
    Abstract: Various systems and methods for media defect detection.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: March 31, 2015
    Assignee: LSI Corporation
    Inventors: Fan Zhang, Weijun Tan, Shaohua Yang
  • Patent number: 8977937
    Abstract: The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for variable rate encoding and/or decoding in a data processing system. In some cases, embodiments include a variable length data decoder circuit that is operable to apply a decode algorithm to the encoded input based upon a first selected H-Matrix to yield a first decoded output and apply the decode algorithm to the encoded input based upon a second selected H-Matrix to yield a second decoded output.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: March 10, 2015
    Assignee: LSI Corporation
    Inventors: Fan Zhang, Shaohua Yang, Yang Han, Chung-Li Wang, Weijun Tan