Patents by Inventor Chia-Lin Chiu

Chia-Lin Chiu 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: 8502472
    Abstract: A light emitting diode (LED) driving apparatus is disclosed. The LED driving apparatus includes a power converter, a voltage sample-and-hold and comparison circuit, and a pre-charge clock generator. The power converter has a power transistor switch for processing power conversion and outputs a driving voltage at an output terminal. The voltage sample-and-hold and comparison circuit enters a sample-and-hold mode or a comparing mode according to a dimming status signal. The voltage sample-and-hold and comparison circuit samples and holds a feedback voltage to obtain a pre-storage voltage during the sample-and-hold mode and compares the pre-storage voltage with the feedback voltage to obtain a comparison result during the comparing mode. The voltage sample-and-hold and comparison circuit generates a pre-charge enable signal according to the comparison result.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: August 6, 2013
    Assignee: Novatek Microelectronics Corp.
    Inventors: Tsung-Hau Chang, Chia-Lin Chiu
  • Publication number: 20120139439
    Abstract: A light emitting diode (LED) driving apparatus is disclosed. The LED driving apparatus includes a power converter, a voltage sample-and-hold and comparison circuit, and a pre-charge clock generator. The power converter has a power transistor switch for processing power conversion and outputs a driving voltage at an output terminal. The voltage sample-and-hold and comparison circuit enters a sample-and-hold mode or a comparing mode according to a dimming status signal. The voltage sample-and-hold and comparison circuit samples and holds a feedback voltage to obtain a pre-storage voltage during the sample-and-hold mode and compares the pre-storage voltage with the feedback voltage to obtain a comparison result during the comparing mode. The voltage sample-and-hold and comparison circuit generates a pre-charge enable signal according to the comparison result.
    Type: Application
    Filed: February 15, 2011
    Publication date: June 7, 2012
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Tsung-Hau Chang, Chia-Lin Chiu
  • Patent number: 8148911
    Abstract: The present invention relates to a current-balance circuit and a backlight module having the same. The current balance circuit includes a current balance unit, a control unit, and a detection unit. The current balance unit is connected to a plurality of light units to regulate the current of the plurality of light units, independent from the effects of input voltage. The detection unit is connected to the plurality of light units and the current balance unit to detect the minimum operating voltage for the plurality of light units. The control unit, connected to the current balance unit, controls the operation of the plurality of light units.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: April 3, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Ke-Horng Chen, Chia-Lin Chiu, Ling Li, Chia-Lin Liu, Chi-Neng Mo
  • Patent number: 8018170
    Abstract: An LED driving module suitable to drive a plurality of LED strings in parallel connection is disclosed. The LED driving module includes a voltage converting apparatus, a conduction voltage detecting apparatus, a reference voltage generating apparatus and a current-adjusting apparatus. The voltage converting apparatus produces a driving voltage according to a conduction voltage. The conduction voltage detecting apparatus detects the conducting states of the LED strings for producing a conduction voltage and an enabling signal. The reference voltage generating apparatus generates a first reference voltage according to the enabling signal. The current-adjusting apparatus produces a plurality of driving currents according to the first reference voltage, and the driving currents flow through the LED strings.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 13, 2011
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ke-Horng Chen, Chia-Lin Chiu, Lan-Shan Cheng
  • Publication number: 20100148679
    Abstract: The present invention relates to a current-balance circuit and a backlight module having the same. The current balance circuit includes a current balance unit, a control unit, and a detection unit. The current balance unit is connected to a plurality of light units to regulate the current of the plurality of light units, independent from the effects of input voltage. The detection unit is connected to the plurality of light units and the current balance unit to detect the minimum operating voltage for the plurality of light units. The control unit, connected to the current balance unit, controls the operation of the plurality of light units.
    Type: Application
    Filed: April 29, 2009
    Publication date: June 17, 2010
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Ke-Horng CHEN, Chia-Lin CHIU, Ling LI, Chia-Lin LIU, Chi-Neng MO
  • Publication number: 20090261743
    Abstract: An LED driving module suitable to drive a plurality of LED strings in parallel connection is disclosed. The LED driving module includes a voltage converting apparatus, a conduction voltage detecting apparatus, a reference voltage generating apparatus and a current-adjusting apparatus. The voltage converting apparatus produces a driving voltage according to a conduction voltage. The conduction voltage detecting apparatus detects the conducting states of the LED strings for producing a conduction voltage and an enabling signal. The reference voltage generating apparatus generates a first reference voltage according to the enabling signal. The current-adjusting apparatus produces a plurality of driving currents according to the first reference voltage, and the driving currents flow through the LED strings.
    Type: Application
    Filed: June 27, 2008
    Publication date: October 22, 2009
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Ke-Horng Chen, Chia-Lin Chiu, Lan-Shan Cheng
  • Publication number: 20080086056
    Abstract: An ultrasonic transducer comprising a flexible membrane, a first electrode in the flexible membrane, a second electrode in the flexible membrane, and a chamber in the flexible membrane between the first electrode and the second electrode.
    Type: Application
    Filed: October 10, 2007
    Publication date: April 10, 2008
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ming-Wei CHANG, Hsu-Cheng DENG, Tien-Chu FAN, Chih-Min LAI, Gwo-Shiang LEE, Chia-Lin CHIU
  • Publication number: 20040249285
    Abstract: A flexible ultrasonic transducer, comprising a plurality of ultrasonic transducer elements. Each of the ultrasonic transducer elements in turn comprises a base, a membrane and a first and a second electrode. The base is made of soft material, having an upper side and a lower side, with a support set on the upper side. The membrane is able to perform vibrations, having an outer side and an inner side, which is laid on the support. The first electrode is placed on the base and the second electrode placed in the membrane, the first and second electrodes being connected with a voltage source. Manufacturing the flexible ultrasonic transducer requires less steps without increasing cost. By having a flexible shape, emission and reception of ultrasonic waves as well as an effective area are enhanced, with less attenuation of ultrasonic waves, resulting in more effective sensing.
    Type: Application
    Filed: August 25, 2003
    Publication date: December 9, 2004
    Inventors: Tse-Min Deng, Tien-Chu Fan, Gwo-Shiang Lee, Ming-Wei Chang, Chih-Min Lai, Chia-Lin Chiu