Patents by Inventor Yuh-Long Yeh

Yuh-Long Yeh 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: 9772637
    Abstract: A voltage regulation circuit is provided. The voltage regulation circuit regulates a level of a supply voltage provided by an automotive battery. The voltage regulation circuit includes a selector and an error amplifier. The selector receives a plurality of predetermined voltages and selects one of the plurality of predetermined voltages according to a control signal to serve as a first reference voltage. The error amplifier generates an error signal according to the first reference voltage and a feedback signal. The feedback signal is related to the supply voltage. The voltage regulation circuit regulates the level of the supply voltage according to the error signal.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: September 26, 2017
    Assignee: MediaTek Inc.
    Inventors: Chien-Wei Kuan, Jyh-Pyng Lay, Chih-Ching Yu, Yuh-Long Yeh
  • Publication number: 20150244200
    Abstract: A method for performing wireless charging control of an electronic device and an associated apparatus are provided, where the method includes the steps of: performing at least one frequency detection operation according to at least one signal of the electronic device to generate at least one detection result; and determining a specific set of program codes within a plurality of sets of program codes to be an active set of program codes according to the aforementioned at least one detection result, and loading the specific set of program codes from a non-volatile (NV) memory of the electronic device, to control wireless charging operations of the electronic device. For example, the aforementioned at least one signal of the electronic device can be at least one induced signal of a power input coil of the electronic device or at least one derivative of the aforementioned at least one induced signal.
    Type: Application
    Filed: November 27, 2014
    Publication date: August 27, 2015
    Inventors: Kuan-Kai Juan, Patrick Stanley Riehl, Anand Satyamoorthy, Yung-Chih Yen, Yuh-Long Yeh, Hung-Yen Chen, Jui-Ching Yang
  • Publication number: 20140361760
    Abstract: A voltage regulation circuit is provided. The voltage regulation circuit regulates a level of a supply voltage provided by an automotive battery. The voltage regulation circuit includes a selector and an error amplifier. The selector receives a plurality of predetermined voltages and selects one of the plurality of predetermined voltages according to a control signal to serve as a first reference voltage. The error amplifier generates an error signal according to the first reference voltage and a feedback signal. The feedback signal is related to the supply voltage. The voltage regulation circuit regulates the level of the supply voltage according to the error signal.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Inventors: Chien-Wei KUAN, Jyh-Pyng LAY, Chih-Ching YU, Yuh-Long YEH
  • Patent number: 7433279
    Abstract: A real-time wobble detector and an adaptive layer distance balancing calculator are added in a layer jump control device of a high-speed optical drive to solve failure and instability caused by the wobble effect of the optical drive during layer jump. A layer jump control method of the optical drive is also provided.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: October 7, 2008
    Assignee: Mediatek Incorporation
    Inventors: Yi-Ren Chung, Yuh-Long Yeh
  • Publication number: 20080127356
    Abstract: A method for securing firmware in a memory is provided. Memory data in the memory is checked. If the memory data in the memory meets a criterion, a host is allowed to read and write the entire memory. If not, the host is prevented from reading the entire memory.
    Type: Application
    Filed: November 27, 2006
    Publication date: May 29, 2008
    Applicant: MEDIATEK INC.
    Inventors: Chi-Chun Hsu, Yuh-Long Yeh, Ming-Yang Chao
  • Publication number: 20070247981
    Abstract: A real-time wobble detector and an adaptive layer distance balancing calculator are added in a layer jump control device of a high-speed optical drive to solve failure and instability caused by the wobble effect of the optical drive during layer jump. A layer jump control method of the optical drive is also provided.
    Type: Application
    Filed: January 8, 2007
    Publication date: October 25, 2007
    Inventors: Yi-Ren Chung, Yuh-Long Yeh
  • Publication number: 20070226727
    Abstract: A device having updatable firmware code includes a non-volatile memory for storing the firmware code; a clock enable controller for generating a clock signal according to a clock source signal when a clock disable signal is unasserted, and further for pausing the clock signal when the clock disable signal is asserted; a micro-controller coupled to the non-volatile memory for performing device operations according to the firmware code and the clock signal, and further for asserting a trigger signal to initiate an update process of the firmware code; and an update controller coupled to the micro-controller, the clock enable controller, and the non-volatile memory for asserting the clock disable signal and then updating the firmware code upon assertion of the trigger signal.
    Type: Application
    Filed: March 6, 2006
    Publication date: September 27, 2007
    Inventor: Yuh-Long Yeh
  • Patent number: 7184374
    Abstract: A real-time wobble detector and an adaptive layer distance balancing calculator are added in a layer jump control device of a high-speed optical drive to solve failure and instability caused by the wobble effect of the optical drive during layer jump. A layer jump control method of the optical drive is also provided.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: February 27, 2007
    Assignee: Mediatek Incorporation
    Inventors: Yi-Ren Chung, Yuh-Long Yeh
  • Publication number: 20050122859
    Abstract: The present invention discloses a method and an apparatus of mirror signal auto-calibration for an optical disk drive, and the apparatus comprises a preamplifier and a MIRR signal calibrator, wherein the preamplifier is used for receiving the signal outputted from an optical head to produce a MIRR signal and feeds the MIRR signal to a seek speed controller for controlling a seeking operation of the optical head. The MIRR signal calibrator is used for receiving and evaluating the MIRR signal so as to output a calibration signal to a MIRR signal generator as the basis for generating the MIRR signal.
    Type: Application
    Filed: June 1, 2004
    Publication date: June 9, 2005
    Inventors: Yuh-Long Yeh, Chen-Hsing Lo
  • Publication number: 20050052962
    Abstract: A real-time wobble detector and an adaptive layer distance balancing calculator are added in a layer jump control device of a high-speed optical drive to solve failure and instability caused by the wobble effect of the optical drive during layer jump. A layer jump control method of the optical drive is also provided.
    Type: Application
    Filed: December 9, 2003
    Publication date: March 10, 2005
    Inventors: Yi-Ren Chung, Yuh-Long Yeh