Patents by Inventor Jan Chen

Jan 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: 20130047049
    Abstract: A device includes a first die coupled to an interconnect structure of an interposer. The first die includes a first BIST circuit configured to generate and output test signals to the interconnection structure of the interposer. A second die is coupled to the interconnect structure of the interposer and includes a second BIST circuit configured to receive signals from the interconnection structure of the interposer in response to the first BIST circuit transmitting the test signals. The second BIST circuit is configured to compare the signals received from the interconnection structure of the interposer to reference signals generated by the second BIST circuit.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 21, 2013
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ji-Jan CHEN, Nan-Hsin Tseng, Chin-Chou Liu
  • Patent number: 8360828
    Abstract: A cutting tool suitable for cutting a workpiece placed on a photocurable adhesive layer is provided. The cutting tool includes a main body, a cutting layer and a light emitting material. The cutting layer is disposed on a surface of the main body and is applicable in cutting the workpiece. The light emitting material is disposed inside the cutting layer or between the main body and the cutting layer. The light emitting material is suitable for emitting a light capable of curing the photocurable adhesive layer adjacent to a cutting path as the workpiece is cut by the cutting layer.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: January 29, 2013
    Assignee: Advanced Semiconductor Engineering, Inc.
    Inventors: Jan-Chen Huang, Chu-Ching Sung, Ming-Yu Huang
  • Publication number: 20120295588
    Abstract: In a near-field communication (NFC) service protection method of the mobile device, the mobile device includes an NFC controller, one or more security elements, a global positioning system (GPS) and a storage system. The method sets a security code for an NFC service of each of the security elements according to the geographic location of the mobile device as acquired by the GPS, and stores a security protection of the NFC service corresponding to each of the NFC services into the storage system. After an NFC service is selected from one of the security elements, and the NFC service is performed by executing an NFC application corresponding to the NFC service through the NFC controller. In addition, the method deletes the security code of the NFC service to disable the security protection of the NFC service when the NFC service needs to disable the security protection.
    Type: Application
    Filed: March 27, 2012
    Publication date: November 22, 2012
    Applicant: CHI MEI COMMUNICATION SYSTEMS, INC.
    Inventors: CHO-JAN CHEN, LI-YUN CHEN
  • Publication number: 20120252395
    Abstract: A receiver of a GNSS system is provided. The receiver comprises two mixers and a processing circuit. The first mixer down-converts an input radio-frequency signal comprising a first GNSS signal and a second GNSS signal into a first low-frequency signal. The second mixer down-converts the input radio-frequency signal into a second low-frequency signal. The processing circuit generates at least one phase-shifted low-frequency signal according to at least the first low-frequency signal, extract signal components of the first GNSS signal by rejecting signal components of the second GNSS signal according to the second low-frequency signal and the at least one phase-shifted low-frequency signal, and extract signal components of the second GNSS signal by rejecting signal components of the first GNSS signal according to the second low-frequency signal and the at least one phase-shifted low-frequency signal. The first and second GNSS signals are situated in different frequency ranges.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 4, 2012
    Inventors: Chi-Wei Cheng, Yueh-Hua Yu, Yi-Jan Chen
  • Patent number: 8213906
    Abstract: A method for generating one-time password (OTP) using a mobile phone registers a telephone number of the mobile phone on a website at first. A communication server generates a first random number and a second random number. Furthermore, the communication server generates a first OTP according to the first random number, and a subscriber identity module (SIM) card of the mobile phone generates a second OTP according to the second random number. The communication server checks if the second OTP is the same as the first OTP. If the second OTP is the same as the first OTP, the mobile phone has successfully logged onto the website.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: July 3, 2012
    Assignee: Chi Mei Communications Systems, Inc.
    Inventor: Cho-Jan Chen
  • Publication number: 20120146693
    Abstract: An apparatus for clock skew compensation is provided. The apparatus includes a first delay locked loop (DLL) module disposed in a first die and a second DLL module disposed in a second die. A first input terminal of the first DLL module receives a reference clock. A first input terminal of the second DLL module is electrically connected to an output terminal of the first DLL module. An output terminal of the second DLL module is electrically connected to a second input terminal of the first DLL module.
    Type: Application
    Filed: May 23, 2011
    Publication date: June 14, 2012
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yu Lee, Nai-Chen Cheng, Ji-Jan Chen, Yuan-Hua Chu, Ching-Yuan Yang
  • Patent number: 8142759
    Abstract: The invention discloses one glyco-molecular imaging method for grade classification of liver fibrosis and its glyco-molecular imaging agent. The agent combining with glyco-molecular imaging method for liver targeting could be used to differentiate the grade of liver fibrosis and follow-up evaluation of the therapeutic effect.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: March 27, 2012
    Assignee: Institute of Nuclear Energy Research
    Inventors: Mei-Hui Wang, Wuu-Jyh Lin, Shui-Cheng Lee, Lie-Hang Shen, Haw-Jan Chen
  • Patent number: 8144756
    Abstract: The present invention relates to a jitter measuring system, comprising: a delay circuit for receiving a clock signal and delaying the clock signal to generate a delay signal; a jitter amplifier for receiving the clock signal and delay signal to generate a first signal and a second signal; and a converter for converting a phase different between the first signal and the second signal into a relevant digital code; wherein the phase difference between the first signal and the second signal is an amplification of jitter.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: March 27, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Yu Lee, Nai-Chen Cheng, Ji-Jan Chen
  • Patent number: 8134353
    Abstract: The present invention discloses a multi-phase power converter, and a control circuit and a control method of the multi-phase power converter. The multi-phase power converter comprises multiple power conversion phases. The method comprises: determining whether to enter a phase-shedding mode; at a first time when entering the phase-shedding mode, disabling at least one of the power conversion phases; and at another time when entering the phase-shedding mode, disabling at least another one of the power conversion phases.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: March 13, 2012
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Ching-Jan Chen, Chun-Shih Huang, Kuo-Lung Tseng, Dan Chen
  • Patent number: 8113412
    Abstract: A method includes electrically grounding a first plurality of metal bumps on a first surface of an interconnection component to a common ground plate. A voltage contrast (VC) image of a second plurality of metal bumps of the interconnection component is generated. Grey levels of the second plurality of metal bumps in the VC image are analyzed to find defect connections between the second plurality of metal bumps and respective ones of the first plurality of metal bumps.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: February 14, 2012
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd
    Inventors: Nan-Hsin Tseng, Yun-Han Lee, Chin-Chou Liu, Ji-Jan Chen, Wei-Pin Changchien, Chien-Hui Chen
  • Patent number: 8094024
    Abstract: An exemplary amplitude shift keying (ASM) demodulator and a radio frequency identification (RFID) system using the same are provided. The ASM demodulator is adapted to demodulate an alternating current input signal and generate a demodulated envelope signal. The ASM demodulator includes a signal input terminal group, an input rectifier circuit, a current mirror circuit electrically coupled to the input rectifier circuit, an output stage electrically coupled to the current mirror circuit, and a low pass filter electrically coupled to the output stage. The input rectifier circuit is electrically coupled to the signal input terminal group and adapted to perform a rectifying operation applied to the alternating current input signal. The input rectifier circuit includes a plurality of electrically coupled transistors and a gate electrode of each of the transistors is unconnected with a source electrode and a drain electrode itself.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: January 10, 2012
    Assignee: Au Optronics Corp.
    Inventors: Yuan-Jiang Lee, Yueh-Hua Yu, Yi-Jan Chen, Yu-Hsuan Li
  • Patent number: 8093928
    Abstract: A signal source device is provided and includes a plurality of latch units, an inverter unit, and a voltage-shifting unit, which may include a capacitance unit. The plurality of latch units are substantially cascaded. The inverter unit is coupled to the latch units. The voltage-shifting unit has a first terminal coupled to the inverter unit and one of the latch units and a second terminal receiving a first input signal, for shifting a voltage level at the first terminal according to the first input signal.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: January 10, 2012
    Assignees: Mediatek Inc., National Taiwan University
    Inventors: Chih Wei Chang, Yi-Jan Chen
  • Patent number: 8090362
    Abstract: A system and method for displaying characters on a BLUETOOTH device using a mobile electronic device obtains a telephone number of an incoming call, and converts associated one or more characters into a bitmap picture in response to a determination that the telephone number is associated with one or more characters in a character encoding packet. The system and method further reads a resolution of the bitmap picture and a resolution of a display of the BLUETOOTH device, and adjusts the resolution of the bitmap picture to match the resolution of the display of the BLUETOOTH device. Furthermore, the system and method sends the bitmap picture or the telephone number to the BLUETOOTH device, and displays the bitmap picture on the display of the BLUETOOTH device.
    Type: Grant
    Filed: May 17, 2009
    Date of Patent: January 3, 2012
    Assignee: Chi Mei Communication Systems, Inc.
    Inventor: Cho-Jan Chen
  • Patent number: 8051394
    Abstract: A yield evaluating apparatus and a method thereof are provided. The yield evaluating apparatus includes a spatial correlation module. The spatial correlation module receives at least one process-related data and a plurality of circuit layouts and obtains a correlation coefficient between unit elements in the circuit layouts according to the process-related data. The spatial correlation module calculates a spatial correlation between elements in each of the circuit layouts according to the correlation coefficient and selects one of the circuit layouts according to the spatial correlations.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: November 1, 2011
    Assignees: Industrial Technology Research Institute, National Central University
    Inventors: Pei-Wen Luo, Jwu-E Chen, Chin-Long Wey, Liang-Chia Cheng, Ji-Jan Chen, Wen-Ching Wu
  • Publication number: 20110259166
    Abstract: A cutting tool suitable for cutting a workpiece placed on a photocurable adhesive layer is provided. The cutting tool includes a main body, a cutting layer and a light emitting material. The cutting layer is disposed on a surface of the main body and is applicable in cutting the workpiece. The light emitting material is disposed inside the cutting layer or between the main body and the cutting layer. The light emitting material is suitable for emitting a light capable of curing the photocurable adhesive layer adjacent to a cutting path as the workpiece is cut by the cutting layer.
    Type: Application
    Filed: September 3, 2010
    Publication date: October 27, 2011
    Applicant: ADVANCED SEMICONDUCTOR ENGINEERING, INC.
    Inventors: Jan-Chen Huang, Chu-Ching Sung, Ming-Yu Huang
  • Publication number: 20110187341
    Abstract: For a multiphase interleaved voltage regulator, an offset cancellation circuit is applied for each phase separately. The current loop gain of each phase is thus increased to mitigate the beat-frequency oscillation in phase currents when the beat frequency is below the bandwidth of the low-pass filter in the offset cancellation circuit, without introducing additional instability issue that is the drawback of increasing current-sensing gain.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 4, 2011
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: CHEN-HUA CHIU, CHING-JAN CHEN, DAN CHEN, WEI-HSU CHANG
  • Patent number: 7935833
    Abstract: A compound containing carboxylate ester and N2S2 ligand bi-functional groups and a manufacturing method thereof are disclosed. The S in the N2S2 ligand of the compound containing carboxylate ester and N2S2 ligand bi-functional groups includes a protective group so as to avoid to be oxidized and easy storage. In a complex reaction, the protective group is automatically released As to the active carboxylate ester, it is for reacting with compounds having amino groups such as amines, amino acids, peptides, or protein etc while the N2S2 ligand is for bonding with technetium or rhenium so as to form neutral complex. The compound containing carboxylate ester and N2S2 ligand bi-functional groups is applied to radiopharmaceuticals such as contrast agents for tissues and target agents.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: May 3, 2011
    Assignee: Atomic Energy Council-Institute of Nuclear Energy Research
    Inventors: Show-Wen Liu, Tsyh-Lang Lin, Cheng-Fang Hsu, Cheng-Hsien Lin, Tsai-Yueh Luo, Lie-Hang Shen, Haw-Jan Chen
  • Publication number: 20100225288
    Abstract: The present invention discloses a multi-phase power converter, and a control circuit and a control method of the multi-phase power converter. The multi-phase power converter comprises multiple power conversion phases. The method comprises: determining whether to enter a phase-shedding mode; at a first time when entering the phase-shedding mode, disabling at least one of the power conversion phases; and at another time when entering the phase-shedding mode, disabling at least another one of the power conversion phases.
    Type: Application
    Filed: July 2, 2009
    Publication date: September 9, 2010
    Inventors: Ching-Jan Chen, Chun-Shih Huang, Kuo-Lung Tseng, Dan Chen
  • Publication number: 20100219873
    Abstract: A signal source device is provided and includes a plurality of latch units, an inverter unit, and a voltage-shifting unit, which may include a capacitance unit. The plurality of latch units are substantially cascaded. The inverter unit is coupled to the latch units. The voltage-shifting unit has a first terminal coupled to the inverter unit and one of the latch units and a second terminal receiving a first input signal, for shifting a voltage level at the first terminal according to the first input signal.
    Type: Application
    Filed: March 2, 2009
    Publication date: September 2, 2010
    Applicants: MEDIATEK INC., NATIONAL TAIWAN UNIVERSITY
    Inventors: Chih Wei Chang, Yi-Jan Chen
  • Patent number: 7764577
    Abstract: A method for pre-calibrating a balance gain of an analog front end in an optical disk drive to calibrate a variation of a focus balance. The method includes the steps of: adjusting the balance gain of the focus balance; moving a lens and getting an S curve; and comparing a positive half cycle of the S curve with a negative half cycle of the S curve. When the positive half cycle is equal to the negative half cycle, it represents that the balance gain of the focus balance is optimized and the procedure ends; or otherwise the above-mentioned steps are repeated to adjust the balance gain of the focus balance again. Because the balance gain is pre-calibrated, the optimal power calibration, the successful disk-reading possibility, the write-in quality and the stability of the disk judging mechanism can be enhanced and the consistency and the stability of the product can be improved.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: July 27, 2010
    Assignee: Sunext Technology Co., Ltd.
    Inventor: Der Jan Chen