Patents by Inventor Yen-Chi Lee

Yen-Chi Lee 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).

  • Publication number: 20210265195
    Abstract: An embodiment is a structure including a first fin over a substrate, a second fin over the substrate, the second fin being adjacent the first fin, an isolation region surrounding the first fin and the second fin, a gate structure along sidewalls and over upper surfaces of the first fin and the second fin, the gate structure defining channel regions in the first fin and the second fin, a source/drain region on the first fin and the second fin adjacent the gate structure, and an air gap separating the source/drain region from a top surface of the substrate.
    Type: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Inventors: Yen-Ru Lee, Chii-Horng Li, Chien-I Kuo, Li-Li Su, Chien-Chang Su, Heng-Wen Ting, Jung-Chi Tai, Che-Hui Lee, Ying-Wei Li
  • Patent number: 11041708
    Abstract: An angle sensing device including a first object, a second object, a magnetic field source, and a first magnetic sensor is provided. The second object is adapted to be rotated with respect to the first object, so that an inclined angle of the second object with respect to the first object is changed. The magnetic field source is connected to the second object. The first magnetic sensor is connected to the first object, and configured to sense a magnetic field generated by the magnetic field source. When the second object is rotated with respect to the first object, the magnetic field sensed by the first magnetic sensor changes, so that an output signal of the first magnetic sensor corresponding to the magnetic field changes.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: June 22, 2021
    Assignee: iSentek Inc.
    Inventors: Wei-An Hsieh, Fu-Te Yuan, Yen-Chi Lee
  • Patent number: 11022632
    Abstract: An electric current sensor includes a substrate, a first sloped surface, a second sloped surface, at least one conductive wire, a first anisotropic magnetoresistor (AMR) unit, a second AMR unit, a first magnetization direction setting device, and a second magnetization direction setting device. The first sloped surface and the second sloped surface are disposed on the substrate and arranged in a first direction. The at least one conductive wire extends along a second direction and is disposed beside the substrate. The first AMR unit is disposed on the first sloped surface. The second AMR unit is disposed on the second sloped surface. The first magnetization direction setting device and the second magnetization direction setting device are configured to set magnetization directions of the AMR units.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: June 1, 2021
    Assignee: iSentek Inc.
    Inventors: Fu-Te Yuan, Yen-Chi Lee
  • Publication number: 20210033638
    Abstract: A motion sensing module including a plurality of first and second magneto-resistive sensors and a processor is provided. The processor executes the following steps S1 and S2. The step S1: the processor defines at least one first coordinate system from a first portion of the first magneto-resistive sensors and a second portion of the second magneto-resistive sensors. The processor defines at least one second coordinate system from a third portion of the first magneto-resistive sensors and a fourth portion of the second magneto-resistive sensors. The first and the second coordinate systems are rotational symmetry to each other. The step S2: the first and second magneto-resistive sensors generate a plurality of sensing results according to an external magnetic field. The processor performs calculations according to these sensing results based on the first and second coordinate systems to obtain a calculation result and measures motion information according to the calculation result.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: iSentek Inc.
    Inventors: Yen-Chi Lee, Fu-Te Yuan
  • Publication number: 20200132433
    Abstract: An angle sensing device including a first object, a second object, a magnetic field source, and a first magnetic sensor is provided. The second object is adapted to be rotated with respect to the first object, so that an inclined angle of the second object with respect to the first object is changed. The magnetic field source is connected to the second object. The first magnetic sensor is connected to the first object, and configured to sense a magnetic field generated by the magnetic field source. When the second object is rotated with respect to the first object, the magnetic field sensed by the first magnetic sensor changes, so that an output signal of the first magnetic sensor corresponding to the magnetic field changes.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 30, 2020
    Applicant: iSentek Inc.
    Inventors: Wei-An Hsieh, Fu-Te Yuan, Yen-Chi Lee
  • Publication number: 20200064379
    Abstract: An electric current sensor includes a substrate, a first sloped surface, a second sloped surface, at least one conductive wire, a first anisotropic magnetoresistor (AMR) unit, a second AMR unit, a first magnetization direction setting device, and a second magnetization direction setting device. The first sloped surface and the second sloped surface are disposed on the substrate and arranged in a first direction. The at least one conductive wire extends along a second direction and is disposed beside the substrate. The first AMR unit is disposed on the first sloped surface. The second AMR unit is disposed on the second sloped surface. The first magnetization direction setting device and the second magnetization direction setting device are configured to set magnetization directions of the AMR units.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Applicant: iSentek Inc.
    Inventors: Fu-Te Yuan, Yen-Chi Lee
  • Publication number: 20190331714
    Abstract: A current sensing method and a current sensor are provided. The current sensing method includes the steps of: exciting a magnetic core to generate at least one pair of regions having opposite magnetization directions in the magnetic core; providing a current to pass through a sensing region of the magnetic core, so that the magnetic core correspondingly generates a magnetic field change; and sensing the magnetic field change of the magnetic core by a pickup coil wound around the magnetic core to output an output signal corresponding to the current.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 31, 2019
    Applicant: iSentek Inc.
    Inventors: Fu-Te Yuan, Yen-Chi Lee, Meng-Huang Lai
  • Patent number: 9503739
    Abstract: The disclosure is directed to techniques for encoder-assisted adaptive interpolation of video frames. According to the disclosed techniques, an encoder generates information to assist a decoder in interpolation of a skipped video frame, i.e., an S frame. The information permits the decoder to reduce visual artifacts in the interpolated frame and thereby achieve improved visual quality. The information may include interpolation equation labels that identify selected interpolation equations to be used by the decoder for individual video blocks. As an option, to conserve bandwidth, the equation labels may be transmitted for only selected video blocks that meet a criterion for encoder-assisted interpolation. Other video blocks without equation labels may be interpolated according to a default interpolation technique.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: November 22, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Gokce Dane, Khaled Helmi El-Maleh, Yen-Chi Lee
  • Patent number: 9357233
    Abstract: A video decoder performs a sequential error handling process to detect and conceal errors within a corrupted data segment of video data units. The decoder sequentially decodes a current data unit. Upon detecting an error, the decoder sets an error flag and resynchronizes decoding at the start of the next unit. If the error flag is set, the video decoder identifies the end of the corrupted data segment based on the start of the later unit. The decoder conceals data between the start of the current unit and the end of the corrupted data segment. If the error flag is not set, the decoder may decode the remainder of the current unit and proceed to decode the next available unit without performing error handling and concealment for the current unit. The decoder also may address reference unit mismatches caused by lost video data units.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: May 31, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Yen-Chi Lee, Min Dai, Chia-Yuan Teng
  • Patent number: 8976872
    Abstract: The disclosure is directed to techniques for picture-in-picture (PIP) processing for video telephony (VT). According to the disclosed techniques, a local video communication device transmits PIP information to a remote video communication device. Using the PIP information, the remote video communication device applies preferential encoding to non-PIP regions of video transmitted to the local video communication device.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: March 10, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yen-Chi Lee, Khaled Helmi El-Maleh, Ming-Chang Tsai
  • Patent number: 8977063
    Abstract: The disclosure is directed to techniques for region-of-interest (ROI) processing for video telephony (VT) applications. According to the disclosed techniques, a recipient device defines ROI information for video information transmitted by a sender device, i.e., far-end video information. The recipient device transmits the ROI information to the sender device. Using the ROI information transmitted by the recipient device, the sender device applies preferential encoding to an ROI within a video scene. ROI extraction may be applied to process a user description of a region of interest (ROI) to generate information specifying the ROI based on the description. The user description may be textual, graphical, or speech-based. An extraction module applies appropriate processing to generated the ROI information from the user description. The extraction module may locally reside with a video communication device, or reside in a distinct intermediate server configured for ROI extraction.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: March 10, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Yen-Chi Lee, Khaled Helmi El-Maleh, Ming-Chang Tsai
  • Patent number: 8942293
    Abstract: The disclosure is directed to techniques for picture-in-picture (PIP) processing for video telephony (VT). According to the disclosed techniques, a local video communication device transmits PIP information to a remote video communication device. Using the PIP information, the remote video communication device applies preferential encoding to non-PIP regions of video transmitted to the local video communication device.
    Type: Grant
    Filed: November 5, 2011
    Date of Patent: January 27, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yen-Chi Lee, Khaled Helmi El-Maleh, Ming-Chang Tsai
  • Publication number: 20140376637
    Abstract: The disclosure is directed to techniques for encoder-assisted adaptive interpolation of video frames. According to the disclosed techniques, an encoder generates information to assist a decoder in interpolation of a skipped video frame, i.e., an S frame. The information permits the decoder to reduce visual artifacts in the interpolated frame and thereby achieve improved visual quality. The information may include interpolation equation labels that identify selected interpolation equations to be used by the decoder for individual video blocks. As an option, to conserve bandwidth, the equation labels may be transmitted for only selected video blocks that meet a criterion for encoder-assisted interpolation. Other video blocks without equation labels may be interpolated according to a default interpolation technique.
    Type: Application
    Filed: September 5, 2014
    Publication date: December 25, 2014
    Inventors: Gokce Dane, Khaled Helmi El-Maleh, Yen-Chi Lee
  • Patent number: 8861601
    Abstract: The disclosure is directed to techniques for encoder-assisted adaptive interpolation of video frames. According to the disclosed techniques, an encoder generates information to assist a decoder in interpolation of a skipped video frame, i.e., an S frame. The information permits the decoder to reduce visual artifacts in the interpolated frame and thereby achieve improved visual quality. The information may include interpolation equation labels that identify selected interpolation equations to be used by the decoder for individual video blocks. As an option, to conserve bandwidth, the equation labels may be transmitted for only selected video blocks that meet a criterion for encoder-assisted interpolation. Other video blocks without equation labels may be interpolated according to a default interpolation technique.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: October 14, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Gokce Dane, Khaled Helmi El-Maleh, Yen-Chi Lee
  • Patent number: 8817879
    Abstract: Methods and systems for processing video data are described. A set of candidate motion vectors is selected from motion vectors associated with macroblocks in a first frame of video data and from motion vectors associated with macroblocks in a second frame of the video data. A statistical measure of the set is determined. The statistical measure defines a motion vector for a macroblock of interest in the second frame.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: August 26, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Ye, Gokce Dane, Yen-Chi Lee, Ming-Chang Tsai, Nien-Chung Feng, Karl Ni
  • Patent number: 8767839
    Abstract: One technique for implementing error control in response to a video data error comprises receiving an indication of a video data error from a video decoder, determining whether the video data error occurred on a reverse link of a wireless network between a video encoder and a network device, and applying error control in response to the video data error if the video data error did not occur on the reverse link. For example, the indication of the video data error may include a first sequence number (SN) of a packet comprising lost data, and determining whether the video data error occurred on the reverse link may include comparing first SN with a second SN of a packet associated with a most recent RL error.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: July 1, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Yen-Chi Lee, Nikolai Konrad Nepomuceno Leung
  • Patent number: 8737489
    Abstract: The disclosure is directed to techniques for picture-in-picture (PIP) processing for video telephony (VT). According to the disclosed techniques, a local video communication device transmits PIP information to a remote video communication device. Using the PIP information, the remote video communication device applies preferential encoding to non-PIP regions of video transmitted to the local video communication device.
    Type: Grant
    Filed: November 5, 2011
    Date of Patent: May 27, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yen-Chi Lee, Khaled Helmi El-Maleh, Ming-Chang Tsai
  • Patent number: 8724697
    Abstract: An apparatus performs efficient coding techniques to more efficiently locate motion vector data within neighboring video data units. The apparatus comprises a motion vector (MV) location unit that includes a look-up table (LUT), where the MV location unit obtains video data defining a plurality of video data units and processes the plurality of video data units. The apparatus further includes a geometric resolution unit that determines, while processing a current one of the plurality of video data units, which of the plurality of video data units neighbor the current video data unit. The MV location unit then accesses, for each of the neighboring video data units, the LUT to determine a location of a motion vector within a section of the video data to which the neighboring video data unit is associated.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 13, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yen-Chi Lee, Yiliang Bao
  • Patent number: 8660176
    Abstract: An apparatus performs efficient coding techniques to more efficiently resolve geometric relationships between video data units and thereby determine neighboring video data units for a current video data unit. The apparatus comprises a geometric resolution unit that obtains video data defining a plurality of video data units, and determines, for the current one of the plurality of video data units to be processed, a partition width and a video unit number of the current video data unit. The geometric resolution unit accesses, using the determined partition width and video unit number, a plurality of look-up tables (LUTs) to output one or more indices identifying one or more of the plurality of video data units that neighbor the current video data unit.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: February 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yen-Chi Lee, Yiliang Bao
  • Patent number: 8634457
    Abstract: An apparatus performs efficient coding techniques to more efficiently determine an availability of neighboring video data units determined for the current video data unit. The apparatus comprises an availability determination unit that maintains an availability counter. The availability determination unit determination unit increments the availability counter after each of the plurality of video data units are processed and determines, based on the availability counter, whether one or more of the plurality of video data units (i) have been previously processed and (ii) are available for use as neighboring video data units in the processing of a current one of the plurality of video data units video data units. The apparatus further processes the current video data unit based on the determination of whether one or more of the neighboring video data units are available.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: January 21, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Yen-Chi Lee, Kai Wang