Patents by Inventor Heng-Cheng Yeh

Heng-Cheng Yeh 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: 11527272
    Abstract: A pseudo-analog memory computing circuit includes at least one input circuit, at least one output circuit and at least one pseudo-analog memory computing unit. Each pseudo-analog memory computing unit is coupled between one of the at least one input circuit and one of the at least one output circuit and has at least one weight mode. Each pseudo-analog memory computing unit generates at least first computing result for a coupled output circuit according to a weight of a selected weight mode and at least one input signals of a coupled input circuit.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: December 13, 2022
    Assignee: XX Memory Technology Corp.
    Inventors: Li Che Chen, Cheng Jye Liu, Heng Cheng Yeh
  • Publication number: 20210407560
    Abstract: A pseudo-analog memory computing circuit includes at least one input circuit, at least one output circuit and at least one pseudo-analog memory computing unit. Each pseudo-analog memory computing unit is coupled between one of the at least one input circuit and one of the at least one output circuit and has at least one weight mode. Each pseudo-analog memory computing unit generates at least first computing result for a coupled output circuit according to a weight of a selected weight mode and at least one input signals of a coupled input circuit.
    Type: Application
    Filed: June 23, 2021
    Publication date: December 30, 2021
    Inventors: LI CHE CHEN, CHENG JYE LIU, HENG CHENG YEH
  • Patent number: 7711059
    Abstract: A MCM (multi-carrier modulation) receiver that utilizes a plurality sub-carriers (e.g., tones) to transmit information in a frame-by-frame manner. Identify a first subset of sub-carriers that have negligible ISI (inter-symbol interference) and ICI (inter-carrier interference), and a second subset of sub-carriers that ISI/ICI cancellation is needed to improve the performance. For sub-carriers in the first subset, conventional equalization is performed to obtained soft decisions. For those sub-carriers in the second subset, perform ISI cancellation then ICI cancellation along with equalization. For sub-carriers in the second subset, identify a series of third subsets (one for each of the sub-carriers in the second subset) that cause interference to the sub-carriers in the second set. For sub-carriers in the third subset, identify a series of fourth subsets from a previous frame that cause interference to the sub-carriers in the third set.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: May 4, 2010
    Assignee: Realtek Semiconductor Corp.
    Inventors: Heng-Cheng Yeh, Chia-Liang Lin
  • Patent number: 7693225
    Abstract: A MCM (multi-carrier modulation) receiver that utilizes a plurality tones to transmit information. Identify a first subset of tones that have negligible ISI (inter-symbol interference) and ICI (inter-carrier interference), and a second subset of tones that ISI/ICI cancellation is needed to improve the performance. For tones in the first subset, conventional FEQ (frequency-domain equalization) is performed to obtained soft decisions from the raw decisions. For those tones in the second subset, perform FEQ along with ICI/ISI cancellation. For tones in the second subset, identify a third subset (one for each of the tones in the second subset) to perform ICI cancellation and a series of fourth subsets (one for each of the tones in the second subset) to perform ISI cancellation.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: April 6, 2010
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chia-Liang Lin, Heng-Cheng Yeh, Cheng-Hsian Li
  • Publication number: 20070053453
    Abstract: A MCM (multi-carrier modulation) receiver that utilizes a plurality sub-carriers (e.g., tones) to transmit information in a frame-by-frame manner. Identify a first subset of sub-carriers that have negligible ISI (inter-symbol interference) and ICI (inter-carrier interference), and a second subset of sub-carriers that ISI/ICI cancellation is needed to improve the performance. For sub-carriers in the first subset, conventional equalization is performed to obtained soft decisions. For those sub-carriers in the second subset, perform ISI cancellation then ICI cancellation along with equalization. For sub-carriers in the second subset, identify a series of third subsets (one for each of the sub-carriers in the second subset) that cause interference to the sub-carriers in the second set. For sub-carriers in the third subset, identify a series of fourth subsets from a previous frame that cause interference to the sub-carriers in the third set.
    Type: Application
    Filed: August 16, 2006
    Publication date: March 8, 2007
    Inventors: Heng-Cheng Yeh, Chia-Liang Lin
  • Publication number: 20070019746
    Abstract: A MCM (multi-carrier modulation) receiver that utilizes a plurality tones to transmit information. Identify a first subset of tones that have negligible ISI (inter-symbol interference) and ICI (inter-carrier interference), and a second subset of tones that ISI/ICI cancellation is needed to improve the performance. For tones in the first subset, conventional FEQ (frequency-domain equalization) is performed to obtained soft decisions from the raw decisions. For those tones in the second subset, perform FEQ along with ICI/ISI cancellation. For tones in the second subset, identify a third subset (one for each of the tones in the second subset) to perform ICI cancellation and a series of fourth subsets (one for each of the tones in the second subset) to perform ISI cancellation.
    Type: Application
    Filed: October 24, 2005
    Publication date: January 25, 2007
    Inventors: Chia-Liang Lin, Heng-Cheng Yeh, Cheng-Hsian Li
  • Publication number: 20060098748
    Abstract: A multi-carrier communication system is disclosed. The multi-carrier communication system includes a transmitting module for generating a first time-domain signal by performing an inversed Fourier transform upon a transmitting data; a receiving module for receiving a second time-domain signal and for generating a decoded data by performing a Fourier transform upon the second time-domain signal; and an echo cancellation unit, coupled to the transmitting module and the receiving module, for generating a reconstructed data according to a plurality of computing coefficients, the decoded data, and the transmit data, and for adjusting the computing coefficients according to the reconstructed data.
    Type: Application
    Filed: November 9, 2005
    Publication date: May 11, 2006
    Inventors: Heng-Cheng Yeh, Po-Yuan Wang, Chia-Liang Lin, Cheng-Hsian Li, Pei-Chieh Hsiao