Patents by Inventor Gwo-Huei Wu

Gwo-Huei Wu 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: 20220175182
    Abstract: A brewing machine includes a liquid source, a dispensing outlet, and a motion device for moving the dispensing outlet according to at least one brewing pattern. The motion device includes a first transmission mechanism and a second transmission mechanism, the first transmission mechanism moves the second transmission mechanism to allow the second transmission mechanism to have a first motion trajectory, the second transmission mechanism moves the dispensing outlet to allow the dispensing outlet to have a second motion trajectory, and the first motion trajectory and the second motion trajectory have a substantially same shape.
    Type: Application
    Filed: November 29, 2021
    Publication date: June 9, 2022
    Applicant: Dachun Technology Co., Ltd.
    Inventors: Gwo-Huei WU, En-Hsin WU, Meng-En CHANG, Yu-Ching HUNG
  • Patent number: 8711664
    Abstract: An exemplary method of controlling an optical storage apparatus includes: driving a first mechanical mechanism of the optical storage apparatus by applying a first control signal to the first mechanical mechanism, wherein a second mechanical mechanism of the optical storage apparatus is inactive while the first mechanical mechanism is operating in response to the first control signal; adjusting the first control signal applied to the first mechanical mechanism when the second mechanical mechanism is requested to be active; and driving the second mechanical mechanism by applying a second control signal to the second mechanical mechanism while the first mechanical mechanism is operating in response to the adjusted first control signal.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: April 29, 2014
    Assignee: Mediatek Inc.
    Inventors: Kuan-Kai Juan, Jia-Hau Lin, Gwo-Huei Wu, Hung-Yen Chen, Chih-Chung Wu
  • Patent number: 8467280
    Abstract: A controller of an optical storage apparatus for generating a plurality of control signals is provided. The controller includes a code generator implemented for determining a plurality of control codes according to an input data associated with data recording, and generating the control signals to deliver the control codes. Each of the control codes represents one power level. Besides, regarding each of the control signals, a minimum transmission pulse length thereof corresponds to more than one power symbol period.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: June 18, 2013
    Assignee: Mediatek Inc.
    Inventors: Gwo-Huei Wu, Pi-Hai Liu, Chih-Ching Chen
  • Patent number: 8115661
    Abstract: A method and system for calibrating an initial driving signal for driving an optical pick-up head of an optical disk drive is provided. On one embodiment, said optical disk drive is utilized for reading or writing data on an optical disk, the optical disk includes a plurality of auto power control areas (APC areas) and a plurality of data areas, and the APC areas and the data areas are interleaved in between. In at least one of the APC areas that before the data areas for a normal data writing, an initial driving signal is used for the normal data writing to drive the optical pick-up head to emit laserbeam. A detected level of the laserbeam is then obtained. An update initial driving signal is then calibrated according to the detected level and a target level.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: February 14, 2012
    Assignee: Mediatek Inc.
    Inventors: Gwo-Huei Wu, Kuo-Jung Lan, Yu-Hsuan Lin, You-Wen Chang
  • Publication number: 20110314483
    Abstract: An exemplary method of controlling an optical storage apparatus includes: driving a first mechanical mechanism of the optical storage apparatus by applying a first control signal to the first mechanical mechanism, wherein a second mechanical mechanism of the optical storage apparatus is inactive while the first mechanical mechanism is operating in response to the first control signal; adjusting the first control signal applied to the first mechanical mechanism when the second mechanical mechanism is requested to be active; and driving the second mechanical mechanism by applying a second control signal to the second mechanical mechanism while the first mechanical mechanism is operating in response to the adjusted first control signal.
    Type: Application
    Filed: January 7, 2011
    Publication date: December 22, 2011
    Inventors: Kuan-Kai Juan, Jia-Hau Lin, Gwo-Huei Wu, Hung-Yen Chen, Chih-Chung Wu
  • Patent number: 8081544
    Abstract: A method and an apparatus for deciding a spherical aberration compensation (SAC) value for an optical storage medium are provided. The optical storage medium comprises at least one recording layer and a cover layer. The SAC value is suitable for a selected one of the at least one recording layer. First, a focus search on the optical storage medium is performed to derive a focus error (FE) signal in response to a testing SAC value. Then, a center level and a center basis corresponding to the testing SAC value according to the FE signal is determined. The SAC value according to the center level, the center basis, and the testing SAC value is also determined. When the center level and the center basis are equal, the SAC value is determined to be the testing SAC value.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: December 20, 2011
    Assignee: Mediatek, Inc.
    Inventors: Gwo-Huei Wu, Hsiang-Ji Hsieh, Chih-Yuan Chen, Chao-Ming Huang
  • Publication number: 20110188363
    Abstract: A method and system for calibrating an initial driving signal for driving an optical pick-up head of an optical disk drive is provided. On one embodiment, said optical disk drive is utilized for reading or writing data on an optical disk, the optical disk includes a plurality of auto power control areas (APC areas) and a plurality of data areas, and the APC areas and the data areas are interleaved in between. In at least one of the APC areas that before the data areas for a normal data writing, an initial driving signal is used for the normal data writing to drive the optical pick-up head to emit laserbeam. A detected level of the laserbeam is then obtained. An update initial driving signal is then calibrated according to the detected level and a target level.
    Type: Application
    Filed: April 11, 2011
    Publication date: August 4, 2011
    Applicant: MEDIATEK INC.
    Inventors: Gwo-Huei Wu, Kuo-Jung Lan, Yu-Hsuan Lin, You-Wen Chang
  • Patent number: 7948409
    Abstract: A method for calibrating an initial driving signal for driving an optical pick-up head of an optical disk drive is provided. On one embodiment, said optical disk drive is utilized for reading or writing data on an optical disk, the optical disk comprises a plurality of auto power control areas (APC areas) and a plurality of data areas, and the APC areas and the data areas are interleaved in between. First, in the APC areas, an initial driving signal is used to drive the optical pick-up head to emit laserbeam. A detected level of the laserbeam is then obtained. An update initial driving signal is then calibrated according to the detected level and a target level.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: May 24, 2011
    Assignee: Mediatek Inc.
    Inventors: Gwo-Huei Wu, Kuo-Jung Lan, Yu-Hsuan Lin, You-Wen Chang
  • Patent number: 7944784
    Abstract: A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A wobble signal and a tracking error signal are generated based on an output of the detector, and the wobble signal is sampled according to the tracking error signal. A determination about whether the detector is at the groove track or the land track is made based on the tracking error signal and a comparison of sampled values of the wobble signal.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: May 17, 2011
    Assignee: MediaTek Inc.
    Inventors: Gwo-Huei Wu, Yuh Cheng, Chao-Ming Huang, Chih-Yuan Chen, Ching-Ning Chiu
  • Publication number: 20110075530
    Abstract: A controller of an optical storage apparatus for generating a plurality of control signals is provided. The controller includes a code generator implemented for determining a plurality of control codes according to an input data associated with data recording, and generating the control signals to deliver the control codes. Each of the control codes represents one power level. Besides, regarding each of the control signals, a minimum transmission pulse length thereof corresponds to more than one power symbol period.
    Type: Application
    Filed: November 23, 2009
    Publication date: March 31, 2011
    Inventors: Gwo-Huei Wu, Pi-Hai Liu, Chih-Ching Chen
  • Patent number: 7804746
    Abstract: A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A wobble signal and a tracking error signal are generated based on an output of the detector, and the wobble signal is sampled according to the tracking error signal. A determination about whether the detector is at the groove track or the land track is made based on the tracking error signal and a comparison of sampled values of the wobble signal.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: September 28, 2010
    Assignee: MediaTek Inc.
    Inventors: Gwo-Huei Wu, Yuh Cheng, Chao-Ming Huang, Chih-Yuan Chen, Ching-Ning Chiu
  • Publication number: 20100157783
    Abstract: A detector is scanned across an optical storage medium having groove tracks and land tracks, each track having a wobble structure, to detect light reflected from the optical storage medium. A wobble signal and a tracking error signal are generated based on an output of the detector, and the wobble signal is sampled according to the tracking error signal. A determination about whether the detector is at the groove track or the land track is made based on the tracking error signal and a comparison of sampled values of the wobble signal.
    Type: Application
    Filed: March 3, 2010
    Publication date: June 24, 2010
    Applicant: MEDIATEK, INC.
    Inventors: Gwo-Huei Wu, Yuh Cheng, Chao-Ming Huang, Chih-Yuan Chen, Ching-Ning Chiu
  • Publication number: 20100039908
    Abstract: A method for calibrating an initial driving signal for driving an optical pick-up head of an optical disk drive is provided. On one embodiment, said optical disk drive is utilized for reading or writing data on an optical disk, the optical disk comprises a plurality of auto power control areas (APC areas) and a plurality of data areas, and the APC areas and the data areas are interleaved in between. First, in the APC areas, an initial driving signal is used to drive the optical pick-up head to emit laserbeam. A detected level of the laserbeam is then obtained. An update initial driving signal is then calibrated according to the detected level and a target level.
    Type: Application
    Filed: October 22, 2009
    Publication date: February 18, 2010
    Applicant: MEDIATEK INC.
    Inventors: Gwo-Huei Wu, Kuo-Jung Lan, Yu-Hsuan Lin, You-Wen Chang
  • Publication number: 20100027392
    Abstract: An apparatus for calibrating an optical storage device includes a clock generator, a jitter meter, and a calculation unit. The clock generator is utilized for providing a clock signal; the jitter meter is utilized for obtaining a plurality of data-to-data jitter values of a plurality of radio frequency (RF) signals according to the clock signal; and the calculation unit is utilized for determining a minimum jitter value among the plurality of data-to-data jitter values.
    Type: Application
    Filed: August 4, 2008
    Publication date: February 4, 2010
    Inventors: Gwo-Huei Wu, Yi-Chen Tseng
  • Patent number: 7567054
    Abstract: A control circuit and a control method of controlling a rotation frequency of a spindle in an optical disc drive, the control circuit comprising: a spindle controller, electrically coupled to the spindle, for driving the spindle to rotate an optical disc according to a rotation control signal; a detector, electrically coupled to the spindle controller, for detecting the rotation frequency and for generating detecting signals; a frequency-adjusting module, electrically coupled to the detector, for adjusting at least one of the detecting signals to reduce a rotation frequency difference between detecting signals; a signal selector, electrically coupled to the frequency-adjusting module, for receiving output signals generated from the frequency-adjusting module and then outputting the rotation control signal.
    Type: Grant
    Filed: March 1, 2006
    Date of Patent: July 28, 2009
    Assignee: Media Tek Inc.
    Inventors: Yu-Hsuan Lin, Jin-Bin Yang, Chih-Ching Chen, Gwo-Huei Wu
  • Publication number: 20090185462
    Abstract: A focus controller and a focus control method are provided. The method allows the optical access apparatus focus from a current data layer onto a target layer. Each of the current layer and the target layer corresponds to a Spherical Aberration Compensation (SAC) value and a focus error related parameter. The method adjusts the SAC value in use to a temporary SAC value, adjusts the focus error related parameter in use to a temporary focus error related parameter, focuses on the target layer, adjusts the focus error related parameter in use to the focus error related parameter corresponding to the target layer, and adjusts the SAC value in use to the focus error related parameter corresponding to the target layer.
    Type: Application
    Filed: January 16, 2009
    Publication date: July 23, 2009
    Applicant: MEDIATEK INC.
    Inventors: Gwo-Huei Wu, Chih-Yuan Chen, Yuh Cheng
  • Publication number: 20090180362
    Abstract: A method and an apparatus for deciding a spherical aberration compensation (SAC) value for an optical storage medium are provided. The optical storage medium comprises at least one recording layer and a cover layer. The SAC value is suitable for a selected one of the at least one recording layer. First, a focus search on the optical storage medium is performed to derive a focus error (FE) signal in response to a testing SAC value. Then, a center level and a center basis corresponding to the testing SAC value according to the FE signal is determined. The SAC value according to the center level, the center basis, and the testing SAC value is also determined. When the center level and the center basis are equal, the SAC value is determined to be the testing SAC value.
    Type: Application
    Filed: January 13, 2009
    Publication date: July 16, 2009
    Applicant: MEDIATEK INC.
    Inventors: Gwo-Huei Wu, Hsiang-Ji Hsieh, Chih-Yuan Chen, Chao-Ming Huang
  • Publication number: 20090034378
    Abstract: An optical data accessing apparatus and method for changing the access from a first data layer to a second data layer of an optical storage medium are provided. The first data layer corresponds to a first SAC value, while the second data layer corresponds to a second SAC value. A processor of the optical data accessing apparatus is adapted for: (1) generating and sending a focus off signal to a pickup control unit to disable focus control; (2) generating a target value for an SAC to adjust an SAC value from the first SAC value to the target value, wherein the target value is between the first SAC value and the second SAC value; and (3) generating and sending a focus activation signal to the pickup control unit to re-enable the focus control to focus on the second data layer while the SAC value reaches the target value.
    Type: Application
    Filed: July 21, 2008
    Publication date: February 5, 2009
    Applicant: MEDIATEK INC.
    Inventors: Gwo-Huei Wu, Ching-Ning Chiu, Hsiang-Ji Hsieh, Chih-Yuan Chen, Shih-Jung Chiu
  • Patent number: 7376063
    Abstract: A control circuit of an optical storage device includes a loop phase calculation unit for calculating a closed loop phase of a servo system according to at least one error signal of the servo system and a system control unit coupled to the loop phase calculation unit for generating an optimized control parameter according to the closed loop phase to perform compensation control, wherein the servo system comprises a tracking servo control system or a focusing servo control system, the compensation control is radial tilt control or focus balance adjustment, and the optimized control parameter is at least one optimized control parameter determined according to a plurality of closed loop phases calculated by the loop phase calculation unit.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: May 20, 2008
    Assignee: Media Tek Inc.
    Inventors: Yuh Cheng, Gwo-Huei Wu
  • Publication number: 20070205737
    Abstract: A control circuit and a control method of controlling a rotation frequency of a spindle in an optical disc drive, the control circuit comprising: a spindle controller, electrically coupled to the spindle, for driving the spindle to rotate an optical disc according to a rotation control signal; a detector, electrically coupled to the spindle controller, for detecting the rotation frequency and for generating detecting signals; a frequency-adjusting module, electrically coupled to the detector, for adjusting at least one of the detecting signals to reduce a rotation frequency difference between detecting signals; a signal selector, electrically coupled to the frequency-adjusting module, for receiving output signals generated from the frequency-adjusting module and then outputting the rotation control signal.
    Type: Application
    Filed: March 1, 2006
    Publication date: September 6, 2007
    Inventors: Yu-Hsuan Lin, Jin-Bin Yang, Chih-Ching Chen, Gwo-Huei Wu