Patents by Inventor Hung-Yueh Chen

Hung-Yueh Chen 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: 20190237660
    Abstract: A magnetoresistive random access memory (MRAM) is provided in the present invention, including a conductive plug with a protruding portion extending outwardly on one side and a notched portion concaving inwardly on the other side of the upper edge of conductive plug, and a memory cell with a bottom electrode electrically connecting with the conductive plug, a magnetic tunnel junction (MTJ) on the bottom electrode, and a top electrode on the magnetic tunnel junction, wherein the bottom surface of memory cell completely overlaps the top surface of conductive plug.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 1, 2019
    Inventors: Hung-Chan Lin, Yu-Ping Wang, Hung-Yueh Chen
  • Patent number: 10362540
    Abstract: A method for monitoring paging messages in a mobile station with a subscriber identity card camping on a cell is provided. A paging message from the cell is monitored at a set of M predetermined time intervals. A first paging message with a first subscriber identity information being successively broadcasted in the paging channel at a Nth predetermined time interval and a (N+i)th predetermined time interval of the set of M predetermined time intervals is determined. A second paging message with a second subscriber identity information being successively broadcasted in the paging channel at the Nth predetermined time interval and a (N+j)th predetermined time interval of the set of M predetermined time intervals is determined, wherein j>i. The paging channel is monitored at a (N+i)th predetermined time interval and a (N+j)th predetermined time interval of following predetermined time intervals subsequent to the M predetermined time intervals.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: July 23, 2019
    Assignee: MEDIATEK INC.
    Inventors: Hung-Yueh Chen, Shuang-An Chou, Bin-Ruei Wang, Wen-Hung Wu
  • Patent number: 10355048
    Abstract: An isolation structure is disposed between fin field effect transistors of a magnetic random access memory (MRAM) device. The isolation structure includes a fin line substrate, having a trench crossing the fin line substrate. An oxide layer is disposed on the fin line substrate other than the trench. A liner layer is disposed on an indent surface of the trench. A nitride layer is disposed on the liner layer, partially filling the trench. An oxide residue is disposed on the nitride layer within the trench at a bottom portion of the trench. A gate-like structure is disposed on the oxide layer and also fully filling the trench.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: July 16, 2019
    Assignee: United Microelectronics Corp.
    Inventors: Chung-Liang Chu, Yu-Ruei Chen, Hung-Yueh Chen, Yu-Ping Wang
  • Publication number: 20180035380
    Abstract: A method for monitoring paging messages in a mobile station with a subscriber identity card camping on a cell is provided. A paging message from the cell is monitored at a set of M predetermined time intervals. A first paging message with a first subscriber identity information being successively broadcasted in the paging channel at a Nth predetermined time interval and a (N+i)th predetermined time interval of the set of M predetermined time intervals is determined. A second paging message with a second subscriber identity information being successively broadcasted in the paging channel at the Nth predetermined time interval and a (N+j)th predetermined time interval of the set of M predetermined time intervals is determined, wherein j>i. The paging channel is monitored at a (N+i)th predetermined time interval and a (N+j)th predetermined time interval of following predetermined time intervals subsequent to the M predetermined time intervals.
    Type: Application
    Filed: October 5, 2017
    Publication date: February 1, 2018
    Inventors: Hung-Yueh CHEN, Shuang-An CHOU, Bin-Ruei WANG, Wen-Hung WU
  • Patent number: 9794759
    Abstract: A paging channel is monitored at a special position of every predetermined time interval subsequent to the last monitored time. It is detected whether a same first identity information is repeatedly broadcasted in the paging channel at special positions of different predetermined time interval. A total number of periodically repeated messages containing the same first identity information is determined. A new time interval is determined by multiplying a time period between two successive repeated paging messages with the total number of periodically repeated paging messages, wherein the new time interval has a monitoring interval (having a plurality of predetermined time intervals) equaling to the length of the time period and a sleep interval. The paging channel is monitored at special positions of the plurality of predetermined time intervals in every new time interval subsequent to the last monitored time so as to receive subsequent paging messages from the cell.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: October 17, 2017
    Assignee: MEDIATEK INC.
    Inventors: Hung-Yueh Chen, Shuang-An Chou, Bin-Ruei Wang, Wen-Hung Wu
  • Patent number: 9572174
    Abstract: A communication apparatus is provided. A processor is coupled to a first radio access technology (RAT) module, a second RAT module and a radio transceiver shared by the first and second RAT modules. The first RAT module camps on a first serving cell belonging to a first wireless network and is in a packet transfer mode to perform data transfer in the first wireless network via the radio transceiver. The second RAT module camps on a second serving cell belonging to a second wireless network. The processor schedules the second RAT module to receive at least one neighbor cell's information in a portion of a plurality of predetermined frames during the data transfer of the first RAT module via the radio transceiver.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: February 14, 2017
    Assignee: MEDIATEK INC.
    Inventors: Hung-Yueh Chen, Jui-Ping Lien, Chia-Yi Huang
  • Publication number: 20160157250
    Abstract: A paging channel is monitored at a special position of every predetermined time interval subsequent to the last monitored time. It is detected whether a same first identity information is repeatedly broadcasted in the paging channel at special positions of different predetermined time interval. A total number of periodically repeated messages containing the same first identity information is determined. A new time interval is determined by multiplying a time period between two successive repeated paging messages with the total number of periodically repeated paging messages, wherein the new time interval has a monitoring interval (having a plurality of predetermined time intervals) equaling to the length of the time period and a sleep interval. The paging channel is monitored at special positions of the plurality of predetermined time intervals in every new time interval subsequent to the last monitored time so as to receive subsequent paging messages from the cell.
    Type: Application
    Filed: February 2, 2016
    Publication date: June 2, 2016
    Inventors: Hung-Yueh CHEN, Shuang-An CHOU, Bin-Ruei WANG, Wen-Hung WU
  • Patent number: 9332460
    Abstract: The method and apparatus for CSFB are provided. The method includes transmitting a MO CS request to a LTE network or receiving a MT CS call notification from a LTE network; triggering or accepting a CSFB procedure by the UE; receiving redirection information from the LTE network; judging whether system information corresponding to candidate cells is provided in the redirection information; acquiring system information corresponding to candidate cells, wherein the system information includes location area identifications (LAI) corresponding to candidate cells in the redirection information to determine whether the candidate cells belong to a registered LA; setting the candidate cell belonging to the registered LA to a higher priority; selecting the candidate cell with the higher priority as a target cell; and connecting to the target cell first.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 3, 2016
    Assignee: MEDIATEK INC.
    Inventors: Chi-Chen Lee, Hung-Yueh Chen
  • Patent number: 9326199
    Abstract: A communications apparatus includes an RF signal processing device, a baseband signal processing device and a processor. The processor controls operations of the RF signal processing device and the baseband signal processing device, camps on a first cell of a first RAT, collects cell selection/reselection parameters of one or more frequencies of the first RAT in an autonomous fast return (AFR) list, switches from the first RAT to the second RAT to camp on a second cell of the second RAT, establishes a connection with a peer communications apparatus via the second cell, receives a connection release message or a channel release message from the second cell to release the connection, and switches from the second RAT to the first RAT by performing a cell selection procedure or a redirection procedure according to the AFR list to camp on a third cell of the first RAT.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: April 26, 2016
    Assignee: MEDIATEK INC.
    Inventors: Hung-Yueh Chen, Chi-Chen Lee, Chih-Yuan Tsai, Chun-Pin Chen, Yen-Cheng Lai
  • Patent number: 9264914
    Abstract: A method for monitoring paging messages in a mobile station with a subscriber identity card camping on a cell is provided. A paging channel is monitored at every end of predetermined time interval subsequent to the last monitored time. It is detected whether the same identity information is repeatedly broadcasted in the paging channel at different ends of predetermined time interval. A new time interval is determined when detecting that the same identity information is repeatedly broadcasted. The paging channel is monitored at every end of new time interval subsequent to the last monitored time so as to receive subsequent paging messages from the cell, wherein the new time interval is longer than the predetermined time interval.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: February 16, 2016
    Assignee: MEDIATEK INC.
    Inventors: Hung-Yueh Chen, Shuang-An Chou, Bin-Ruei Wang, Wen-Hung Wu
  • Patent number: 9178758
    Abstract: A method for shortening a circuit switch fallback (CSFB) performing time includes determining a plurality of weighting values each associated with one of a plurality of frequencies to be measured during a CSFB procedure, determining a frequency measurement sequence for scheduling the frequencies to be measured in sequence according to the determined weighting values, and measuring a signal quality on the frequencies according to the frequency measurement sequence.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: November 3, 2015
    Assignee: MEDIATEK INC.
    Inventors: Hung-Yueh Chen, Chun-Pin Chen, Chih-Yuan Tsai
  • Patent number: 8894206
    Abstract: A diagnostic equipment having an auto-focusing function comprising a image detection device, a first scanning device, a mobile optical lens assembly, a focusing detection device and a first splitter assembly is provided. The image detection device comprises a first light source and a first photo detector. The first light source provides a first incident light and the first incident light incident to an object and becomes a first signal light. The first photo detector is for receiving the first signal light. The first scanning device is for adjusting a path of the first incident light and to scan the object. The mobile optical lens assembly has a lens and a mobile platform. The first splitter assembly is for transmitting the first and the second signal light to the first and the second photo detector, respectively.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 25, 2014
    Assignee: Industrial Technology Research Institute
    Inventors: Yuan-Chin Lee, Rung-Ywan Tsai, Chi-Shen Chang, Tai-Ting Huang, Hung-Yueh Chen, Hong-Chou Lyu
  • Patent number: 8878281
    Abstract: Methods and apparatus for non-volatile memory cells. A memory cell includes a floating gate formed over a substrate with a tunneling dielectric over an upper surface of the floating gate and an erase gate over the tunneling dielectric. Sidewall dielectrics enclose the tunneling dielectric. Assist gates and coupling gates are formed on either side of the memory cell and are spaced from the floating gate of the memory cell by the sidewall dielectrics. Methods for forming memory cells include depositing a floating gate over a dielectric layer over a semiconductor substrate, depositing a tunneling dielectric over the floating gate, depositing an erase gate over the tunneling dielectric, patterning the erase gate, tunneling dielectric and floating gate to form memory cells having vertical sides, and depositing sidewall dielectrics on the vertical sides of the memory cells to seal the tunneling dielectrics. Additional steps are performed to complete the cells.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 4, 2014
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chung-Jen Huang, Hung-Yueh Chen
  • Publication number: 20140286315
    Abstract: A communications apparatus includes an RF signal processing device, a baseband signal processing device and a processor. The processor controls operations of the RF signal processing device and the baseband signal processing device, camps on a first cell of a first RAT, receives a predetermined set of system information (SI) from one or more second cells of a second RAT and stores the predetermined set of SI in an SI early-reading database. When performing a RAT change procedure to switch from the first RAT to the second RAT is required, the processor further retrieves the predetermined set of SI of a target cell of the second RAT from the SI early-reading database and performs the RAT change procedure to camp on the target cell based on the retrieved predetermined set of SI.
    Type: Application
    Filed: February 25, 2014
    Publication date: September 25, 2014
    Applicant: MediaTek Inc.
    Inventors: Hung-Yueh CHEN, Chi-Chen LEE
  • Publication number: 20140286307
    Abstract: A communications apparatus includes an RF signal processing device, a baseband signal processing device and a processor. The processor controls operations of the RF signal processing device and the baseband signal processing device, camps on a first cell of a first RAT, receives a mobile terminated (MT) or mobile originated (MO) service request and determines whether performing a RAT change procedure to switch from the first RAT to a second RAT is required. When determining that performing the RAT change procedure is required, the processor directly camps on a target cell of the second RAT and transmits a MT or MO service response for responding the MT or MO service request to the target cell.
    Type: Application
    Filed: February 25, 2014
    Publication date: September 25, 2014
    Applicant: MediaTek Inc.
    Inventors: Hung-Yueh CHEN, Chi-Chen LEE
  • Patent number: 8768390
    Abstract: A surrounding cell monitoring method is applied in a mobile terminal wirelessly communicating with a first cell through a first target channel. The surrounding cell monitoring method includes the steps of: determining whether adjacent channel interference (ACI) of the target channel exists; determining whether a first power level of the adjacent channel is greater than a second power level of the target channel by a threshold difference when the ACI exists, when the ACI does exist; determining whether an adjacent BSIC of the adjacent channel can be decoded when the first power level is greater than the second power level by the threshold difference; and skipping an operation of decoding a target BSIC of the target channel when the adjacent BSIC of the adjacent channel can be decoded successfully.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: July 1, 2014
    Assignee: Mediatek Inc.
    Inventors: Jui-Ping Lien, Hung-Yueh Chen, Meng-Lin Wu, Chun-Sheng Lee
  • Publication number: 20140112119
    Abstract: A method for shortening a circuit switch fallback (CSFB) performing time includes determining a plurality of weighting values each associated with one of a plurality of frequencies to be measured during a CSFB procedure, determining a frequency measurement sequence for scheduling the frequencies to be measured in sequence according to the determined weighting values, and measuring a signal quality on the frequencies according to the frequency measurement sequence.
    Type: Application
    Filed: July 15, 2013
    Publication date: April 24, 2014
    Inventors: Hung-Yueh CHEN, Chun-Pin CHEN, Chih-Yuan TSAI
  • Publication number: 20140113636
    Abstract: The method and apparatus for CSFB are provided. The method includes transmitting a MO CS request to a LTE network or receiving a MT CS call notification from a LTE network; triggering or accepting a CSFB procedure by the UE; receiving redirection information from the LTE network; judging whether system information corresponding to candidate cells is provided in the redirection information; acquiring system information corresponding to candidate cells, wherein the system information includes location area identifications (LAI) corresponding to candidate cells in the redirection information to determine whether the candidate cells belong to a registered LA; setting the candidate cell belonging to the registered LA to a higher priority; selecting the candidate cell with the higher priority as a target cell; and connecting to the target cell first.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 24, 2014
    Applicant: Media Tek Inc.
    Inventors: Chi-Chen LEE, Hung-Yueh CHEN
  • Publication number: 20140106751
    Abstract: A communications apparatus includes an RF signal processing device, a baseband signal processing device and a processor. The processor controls operations of the RF signal processing device and the baseband signal processing device, camps on a first cell of a first RAT, collects cell selection/reselection parameters of one or more frequencies of the first RAT in an autonomous fast return (AFR) list, switches from the first RAT to the second RAT to camp on a second cell of the second RAT, establishes a connection with a peer communications apparatus via the second cell, receives a connection release message or a channel release message from the second cell to release the connection, and switches from the second RAT to the first RAT by performing a cell selection procedure or a redirection procedure according to the AFR list to camp on a third cell of the first RAT.
    Type: Application
    Filed: September 26, 2013
    Publication date: April 17, 2014
    Applicant: MediaTek Inc.
    Inventors: Hung-Yueh CHEN, Chi-Chen LEE, Chih-Yuan TSAI, Chun-Pin CHEN, Yen-Cheng LAI
  • Patent number: 8675581
    Abstract: A wireless communication device for eliminating performance degradation of a packet-switched (PS) data service. The device comprises a processor configured to receive a request to perform the PS data service with a first subscriber identity card, reduce a plurality of scheduled monitoring tasks associated with a second subscriber identity card, and perform the PS data service with the first subscriber identity card while using the reduced plurality of scheduled monitoring tasks to maintain mobility or receive network messages with the second subscriber identity card.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: March 18, 2014
    Assignee: Mediatek Inc.
    Inventors: Hung-Yueh Chen, Ming-Wan Hsu, Sian-Jheng Wong, Yi-Ting Chang