Patents by Inventor Daw-I Wang

Daw-I Wang 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: 20080157996
    Abstract: A universal remote controller is used to remotely control electronic devices and has a casing, a memory module, a control panel, an IR module and a wireless transmission module. The memory module is mounted in the casing and has a storage unit and at least one I/O interface. The storage unit stores digital image data of internal settings of the universal remote controller and communication protocol codes of electronic devices initialized with the remote controller. The control panel is mounted in and is exposed through the casing, has multiple control keys and is capable of generating control signals in response to specific control keys pressed. The wireless transmission module decodes and transforms digital data in the storage unit into television carrier signals and transmits the television carrier signals to a television when the universal remote controller is near the television.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Inventors: Tain-Rein Chen, Daw-I Wang
  • Publication number: 20060239151
    Abstract: An optical disc system for recording data includes an optical pickup unit for accessing data on the disc rotating at a constant angular velocity and producing a wobble signal; a spindle motor for rotating the disc according to a control signal; a circuit for generating the control signal according to a rotation speed of the spindle motor, the circuit not being coupled to the wobble signal; a phase locked loop for extracting a carrier frequency of the wobble signal; a clock synthesizer for producing a channel clock corresponding to a linear velocity, according to the wobble signal carrier frequency; an encoding unit for encoding incoming data utilizing the channel clock, and then for producing a corresponding data signal for driving the optical pickup unit to record data to the optical disc; whereby data recording does not need to be synchronized with the spindle motor operation.
    Type: Application
    Filed: July 3, 2006
    Publication date: October 26, 2006
    Inventors: Daw-I Wang, Chih-Long Dai
  • Publication number: 20050078585
    Abstract: An optical disc drive includes an optical pickup for reading an RF datum in an optical disc, an FM demodulator for demodulating the RF datum so as to generate a bi-phase datum, a bi-phase data rule checker for checking if phases at each edge of neighboring bit cells are different, a bi-phase data corrector for generating a plurality of bi-phase data when the bi-phase data rule checker detects that at least one pair of phases at the edges of neighboring bit cells are not different, a bi-phase demodulator for demodulating the plurality of bi-phase data so as to generate a plurality of ATIP signals, a CRC checker for testing the plurality of ATIP signals, and a multiplexer for selecting a correct ATIP signal according to a test result of the CRC checker.
    Type: Application
    Filed: December 12, 2003
    Publication date: April 14, 2005
    Inventor: Daw-I Wang
  • Patent number: 6711107
    Abstract: The system and method is used for CAV (Constant Angular Velocity) control format recording, whereas the existing disk data is recorded under CLV (Constant Linear Velocity) control format recording. When the PUH receives a laser driver signal, it generates a feed signal and a wobble signal. The feed signal is received by the automatic power control; thereafter the automatic power control generates a first control signal used for causing the laser driver to adjust the laser driver signal. After the ATIP decoder receives the wobble signal, the ATIP decoder generates and outputs ATIP decoded data to the CLV value detector. The CLV value detector receives ATIP decoded data and generates a CLV decoded data to the laser power control. The laser power control receives the CLV decoded data and generates a second control signal used for causing the automatic power control to adjust the first control signal.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: March 23, 2004
    Assignee: Acer Laboratories Inc.
    Inventors: Chi-Mou Chao, Daw-I Wang, Tsung Yueh Shih
  • Publication number: 20040017745
    Abstract: An optical disc system for recoding data onto an optical disc while the optical disc is rotating at a constant angular velocity. The optical disc system includes a PLL for extracting a carrier frequency of a wobble signal outputted from an optical pick-up, a channel synthesizer electrically connected to the PLL for generating a channel clock according to the carrier frequency and a rotating factor of a spindle motor, a data encoder for encoding inputted data according to the channel clock, and a driving circuit for controlling the optical pick-up to record data onto the optical disc according to the encoded data.
    Type: Application
    Filed: November 18, 2002
    Publication date: January 29, 2004
    Inventors: Daw-I Wang, Chih-Long Dai
  • Publication number: 20020114234
    Abstract: The system and method is used for CAV (Constant Angular Velocity) control format recording, whereas the existing disk data is recorded under CLV (Constant Linear Velocity) control format recording. When the PUH receives a laser driver signal, it generates a feed signal and a wobble signal. The feed signal is received by the automatic power control; thereafter the automatic power control generates a first control signal used for causing the laser driver to adjust the laser driver signal. After the ATIP decoder receives the wobble signal, the ATIP decoder generates and outputs ATIP decoded data to the CLV value detector. The CLV value detector receives ATIP decoded data and generates a CLV decoded data to the laser power control. The laser power control receives the CLV decoded data and generates a second control signal used for causing the automatic power control to adjust the first control signal.
    Type: Application
    Filed: August 2, 2001
    Publication date: August 22, 2002
    Inventors: Chi-Mou Chao, Daw-I Wang, Tsung Yueh Shih
  • Patent number: RE43237
    Abstract: The system and method is used for CAV (Constant Angular Velocity) control format recording, whereas the existing disk data is recorded under CLV (Constant Linear Velocity) control format recording. When the PUH receives a laser driver signal, it generates a feed signal and a wobble signal. The feed signal is received by the automatic power control; thereafter the automatic power control generates a first control signal used for causing the laser driver to adjust the laser driver signal. After the ATIP decoder receives the wobble signal, the ATIP decoder generates and outputs ATIP decoded data to the CLV value detector. The CLV value detector receives ATIP decoded data and generates a CLV decoded data to the laser power control. The laser power control receives the CLV decoded data and generates a second control signal used for causing the automatic power control to adjust the first control signal.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: March 13, 2012
    Assignee: MediaTek Inc.
    Inventors: Tsung-Yueh Shih, Chi-Mou Chao, Daw-I Wang