Patents by Inventor Ming-Chang Tsai

Ming-Chang Tsai 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: 11977302
    Abstract: A cholesteric liquid crystal display device and a driving method for improving non-uniform image quality of the cholesteric liquid crystal display device. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display panel and a liquid crystal drive unit. The cholesteric liquid crystal display panel is composed of multiple row circuit structures and multiple column circuit structures. The liquid crystal driving unit sequentially outputs column driving voltages to a plurality of column circuit structures in a scanning manner. After scanning the multiple column circuit structures, the liquid crystal driving unit applies an unselected voltage to the multiple column circuit structures together with more than 18 times the scanning unit time course, so as to make the brightness of the overall picture more uniform.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: May 7, 2024
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Ming-Liang Tsai, Wu-Chang Yang, Chi-Chang Liao
  • Publication number: 20240111139
    Abstract: An imaging lens assembly module includes a lens barrel, a catadioptric lens assembly, an imaging lens assembly, a first fixing element and a second fixing element. The lens barrel has a first relying surface and a second relying surface, which face towards an object side of the imaging lens assembly module. The catadioptric lens assembly relies on the first relying surface. The imaging lens assembly is disposed on an image side of the catadioptric lens assembly, and relies on the second relying surface. The first fixing element is for fixing the catadioptric lens assembly to the lens barrel. The second fixing element is for fixing the imaging lens assembly to the lens barrel. The catadioptric lens assembly is for processing at least twice internal reflections of an image light in the imaging lens assembly module, and for providing optical refractive power.
    Type: Application
    Filed: September 26, 2023
    Publication date: April 4, 2024
    Inventors: Lin-An CHANG, Chung Hao CHEN, Wen-Yu TSAI, Ming-Ta CHOU
  • Patent number: 11948528
    Abstract: The present invention relates to a driving method of a cholesteric liquid crystal display. It includes the steps in the following: driving each scan line by a dynamic driving scheme (DDS) including an Evolution phase; refreshing a frame of the cholesteric liquid crystal display by a full refresh mode, each scan line driven N times during the Evolution phase in the full refresh mode; and refreshing a part of the frame by a partial-refresh mode, each scan line driven M times in the Evolution phase in the partial-refresh mode, wherein M is greater than N.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: April 2, 2024
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Ming-Liang Tsai, Wu-Chang Yang, Chi-Chang Liao
  • Publication number: 20240071263
    Abstract: The present invention provides a display panel, including a backplane having flexibility, a first fixing member, a front frame having flexibility, and a display module provided between the backplane and the front frame. The backplane has a base plate with a first side. The first fixing member extends corresponding to the first side and has a first predetermined curvature. The first fixing member at least has a first wall body standing upright relative to the base plate, and the first fixing member is relatively fixed to the backplane, so that the curvature of the backplane can be adjusted corresponding to the first fixing member. The front frame is provided in a manner that extends correspondingly to the periphery of the backplane, and is relatively fixed to the backplane, so that the curvature of the front frame is relatively adapted to that of the backplane.
    Type: Application
    Filed: August 28, 2023
    Publication date: February 29, 2024
    Inventors: MING-CHIN TSAI, CHIA-HSIN JOW, CHI-CHANG CHEN, CHIA-HSIN CHANG
  • Publication number: 20230224735
    Abstract: A smart channel switching method based on history channel data, and its terminal device and readable storage medium are disclosed. The method includes the steps of: capturing a history current noise value or transmission capacity of each channel of a wireless device and obtaining a healthrate of the channel; obtaining a health ratio by the transmission quantity of each channel and the corresponding healthrate; comparing the health ratio with a threshold, and switching the connection of the wireless device to a channel with the health ratio below the threshold when the health ratio reaches the threshold. In this way, this invention obtains a health ratio by the history current noise value or transmission capacity of each channel, compares the health ratio with the threshold to determine whether the transmission capacity is sufficient, and switches a channel accordingly without requiring any change of the communication protocol.
    Type: Application
    Filed: February 15, 2022
    Publication date: July 13, 2023
    Inventors: MING-CHANG TSAI, TING-WEI LIU
  • Patent number: 11418229
    Abstract: A wireless switch control device and method are provided. The wireless switch control device includes a flexible printed circuit (FPC) board, a load switch, and a wireless control circuit. The FPC board has a first electrode region, a second electrode region, and a component placement region, where the first electrode region is in electrical contact with an anode of the battery module, and the second electrode region is in electrical contact with a cathode of the battery module. The load switch is provided in the component placement region, and coupled to a power supply circuit between the battery module and the electronic product. The wireless control circuit is provided in the component placement region, and coupled to both the load switch and the anode of the battery module. The wireless control circuit receives a setting instruction wirelessly, and controls the load switch according to the setting instruction.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 16, 2022
    Assignee: UNIVERSAL SCIENTIFIC INDUSTRIAL (SHANGHAI) CO., LTD.
    Inventor: Ming-Chang Tsai
  • Publication number: 20210226657
    Abstract: A wireless switch control device and method are provided. The wireless switch control device includes a flexible printed circuit (FPC) board, a load switch, and a wireless control circuit. The FPC board has a first electrode region, a second electrode region, and a component placement region, where the first electrode region is in electrical contact with an anode of the battery module, and the second electrode region is in electrical contact with a cathode of the battery module. The load switch is provided in the component placement region, and coupled to a power supply circuit between the battery module and the electronic product. The wireless control circuit is provided in the component placement region, and coupled to both the load switch and the anode of the battery module. The wireless control circuit receives a setting instruction wirelessly, and controls the load switch according to the setting instruction.
    Type: Application
    Filed: March 19, 2020
    Publication date: July 22, 2021
    Inventor: Ming-Chang Tsai
  • Patent number: 10783959
    Abstract: A method of compensating charge loss and source line bias in programing of non-volatile memory device including the steps of reading a previous program page with a low reference voltage to make an original previous program pattern, merging the original previous program pattern and a current program pattern to make a merged program pattern, reading the previous program page with a high reference voltage to make a verified previous program pattern, and merging the verified previous program pattern and the merged program pattern to make a compensated current program pattern.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: September 22, 2020
    Assignee: Powerchip Semiconductor Manufacturing Corporation
    Inventors: Chun-Yi Tu, Ming-Chang Tsai, Jui-Lung Weng
  • Publication number: 20200219561
    Abstract: A method of compensating charge loss and source line bias in programing of non-volatile memory device including the steps of reading a previous program page with a low reference voltage to make an original previous program pattern, merging the original previous program pattern and a current program pattern to make a merged program pattern, reading the previous program page with a high reference voltage to make a verified previous program pattern, and merging the verified previous program pattern and the merged program pattern to make a compensated current program pattern.
    Type: Application
    Filed: May 3, 2019
    Publication date: July 9, 2020
    Inventors: Chun-Yi Tu, Ming-Chang Tsai, Jui-Lung Weng
  • Patent number: 10290363
    Abstract: A non-volatile memory device and an error compensation method for verifying the same are provided. The non-volatile memory device includes a memory block, a word line driver, a bit line circuit and a controller. The memory block includes multiple memory cells. After a first programming process and a first verification process are performed on the memory cells, the controller performs reverse reading to the control terminals of the memory cells, applies a preset voltage to the control terminals of the memory cells according to preset programming data by using the word line driver, reads data from the memory cells by using the bit line circuit, and determines whether the data of each memory cell is normal according to the data read from the memory cells. When the data of specific memory cells is not normal, the controller performs a second programming process to the specific memory cells.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 14, 2019
    Assignee: Powerchip Technology Corporation
    Inventors: Ming-Chang Tsai, Chun-Yi Tu
  • Publication number: 20190115092
    Abstract: A non-volatile memory device and an error compensation method for verifying the same are provided. The non-volatile memory device includes a memory block, a word line driver, a bit line circuit and a controller. The memory block includes multiple memory cells. After a first programming process and a first verification process are performed on the memory cells, the controller performs reverse reading to the control terminals of the memory cells, applies a preset voltage to the control terminals of the memory cells according to preset programming data by using the word line driver, reads data from the memory cells by using the bit line circuit, and determines whether the data of each memory cell is normal according to the data read from the memory cells. When the data of specific memory cells is not normal, the controller performs a second programming process to the specific memory cells.
    Type: Application
    Filed: February 26, 2018
    Publication date: April 18, 2019
    Applicant: Powerchip Technology Corporation
    Inventors: Ming-Chang Tsai, Chun-Yi Tu
  • Patent number: 9383856
    Abstract: A touch sensing circuit and method is provided. The touch sensing circuit discriminates a common voltage change of a display panel couple to the touch sensor in a touch panel display apparatus. The touch sensor comprises a plurality of sensor electrodes. The touch sensing circuit includes a plurality of channel circuits, each of which includes a reset switch and a sensing switch for alternately conducting an associated sensor electrode to a reset voltage and a charge collecting circuit. The channel circuits are divided to different groups that operate according to interleaving timings for encompassing possible common voltage changes.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: July 5, 2016
    Assignee: MStar Semiconductor, Inc.
    Inventors: Guo-Kiang Hung, Hsuan-I Pan, Ming-Chang Tsai, Meng-Chang Lee, Shih-Tsung Yang
  • Patent number: 9381599
    Abstract: A manufacturing method of a heat dissipation assembly includes the following steps: an accommodating concave portion and hollow areas are formed on a board body, and the hollow areas are through the board body located in the accommodating concave portion. The board body located in the accommodating concave portion is extended, such that the hollow areas are closed by the board body adjacent to the hollow areas. A heat pipe is placed in the accommodating concave portion, and the width of the heat pipe and the width of the accommodating concave portion are substantially the same. A stamping treatment is performed on the board body surrounding the accommodating concave portion to form positioning protruding portions, and the positioning protruding portions protrude toward the accommodating concave portion, such that the heat pipe is fixed between the positioning protruding portions and the accommodating concave portion.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 5, 2016
    Assignee: QUANTA COMPUTER INC.
    Inventors: Chi-Hsueh Yang, Ming-Chang Tsai, Wei-Han Chen, Hsiao-Fan Chang
  • Publication number: 20160098080
    Abstract: A finger-touch tracking system is provided, including a magnet, a magnetic field sensing unit, and a computing unit. The magnet generates a magnetic field. The magnetic field sensing unit moves relative to the magnet, and has a substrate and a plurality of sensors disposed on the substrate. The sensors detect a magnetic flux density of the magnet, so as to generate a tracking signal reflecting a relative position of the magnet with respect to the magnetic field sensing unit. The computing unit receives the tracking signal via a network, and employs the received tracking signal as an input instruction upon the magnitude of the magnetic field.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 7, 2016
    Inventors: Bing-Yu Chen, Li-wei Chan, Rong-Hao Liang, Mike Y. Chen, Kai-Yin Cheng, Ming-Chang Tsai, Chao-Huai Su, Wen-Huang Cheng
  • Patent number: 9113169
    Abstract: This disclosure describes techniques for region-of-interest (ROI) encoding. In accordance with the techniques described herein, an encoding device may determine a temporal spatial dependency value for a candidate reference video block for inter-coding a current block in a video frame. The encoding device may compare the temporal spatial dependency value to a threshold value and select a coding mode for the current block based on the comparison. A decoding device may receive data defining a ROI as well as the temporal spatial dependency value and decode a video block in the ROI based at least in part on the temporal spatial dependency value. In this manner, the techniques of this disclosure may allow a video content viewer the ability to choose a ROI to watch.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: August 18, 2015
    Assignee: Qualcomm Incorporated
    Inventors: Ming-Chang Tsai, Chia-Yuan Teng, Yan Ye
  • Publication number: 20150165572
    Abstract: A manufacturing method of a heat dissipation assembly includes the following steps: an accommodating concave portion and hollow areas are formed on a board body, and the hollow areas are through the board body located in the accommodating concave portion. The board body located in the accommodating concave portion is extended, such that the hollow areas are closed by the board body adjacent to the hollow areas. A heat pipe is placed in the accommodating concave portion, and the width of the heat pipe and the width of the accommodating concave portion are substantially the same. A stamping treatment is performed on the board body surrounding the accommodating concave portion to form positioning protruding portions, and the positioning protruding portions protrude toward the accommodating concave portion, such that the heat pipe is fixed between the positioning protruding portions and the accommodating concave portion.
    Type: Application
    Filed: May 16, 2014
    Publication date: June 18, 2015
    Applicant: Quanta Computer Inc.
    Inventors: Chi-Hsueh YANG, Ming-Chang TSAI, Wei-Han CHEN, Hsiao-Fan CHANG
  • Patent number: 9036937
    Abstract: A repeated integral images method filters image data in only two passes, e.g., the first pass filters horizontal rows of pixels and a second pass filters vertical columns of pixels, or in a single pass. The filter performs at least one infinite impulse response (IIR) filter and at least one finite impulse response (FIR) filter on the image data. A plurality of IIR filters and FIR filters maybe performed to approximate a Gaussian filter. By minimizing the number of passes, the data flow between the processing unit and the storage unit is greatly reduced compared to conventional repeated integral images method thereby improving computation time.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: May 19, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, Pawan K. Baheti, Murali R. Chari, Raghuraman Krishnamoorthi
  • 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: 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: D742201
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: November 3, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yuan-Yuan Bao, Xiao-Zhi Fu, Ze-Lin Yao, Ming-Chang Tsai, Jui-Chi Su, Chi-Tung Mo