Patents by Inventor Chao-Hsin Lu

Chao-Hsin Lu 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: 20110029720
    Abstract: The invention provides a flash storage device. In one embodiment, the flash storage device comprises a flash memory and a controller. The flash memory comprises a plurality of blocks, wherein each of the plurality of blocks comprises a plurality of pages for storing data, and each of the plurality of pages has a physical address. The controller divides a plurality of logical addresses into a plurality of logical address ranges, records a plurality of partial link tables respectively storing a mapping relationship between logical addresses of a corresponding logical address range and corresponding physical addresses, stores the partial link tables in the flash memory, combines the partial link tables to obtain a link table, and converts logical addresses sent by a host to physical addresses according to the link table.
    Type: Application
    Filed: December 18, 2009
    Publication date: February 3, 2011
    Applicant: SILICON MOTION, INC.
    Inventor: Chao-Hsin Lu
  • Patent number: 7876142
    Abstract: A latch inverter includes a first PMOS transistor, a second PMOS transistor, a first NMOS transistor, a second NMOS transistor, a first level-adjusting unit and a second level-adjusting unit. The first level-adjusting unit changes the voltage level of the source of the second PMOS transistor in advance, and the second level-adjusting unit changes the voltage level of the drain of the second NMOS transistor in advance.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: January 25, 2011
    Assignee: Realtek Semiconductor Corp.
    Inventor: Chao-Hsin Lu
  • Patent number: 7822162
    Abstract: A current-mode differential signal transmitting circuit is disclosed, including a transmitter having a first transmitting module and a second transmitting module. The first transmitting module includes a plurality of first outputting units to output first data and a clock outputting signal. The second transmitting module includes a plurality of second outputting units for outputting second data, and the first and second transmitting modules share this clock outputting unit.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: October 26, 2010
    Assignee: Realtek Semiconductor Corp
    Inventors: Hsien-Chun Chang, Chao-Hsin Lu, Ming-Yen Hsu
  • Patent number: 7778321
    Abstract: A method for adjusting parameters of an adaptive equalizer makes use of a transmitted signal received by a receiving end to adjust parameters of an adaptive equalizer. First, signal strengths of a first frequency band and a second frequency band in the transmitted signal are detected. The signal strengths of the first frequency band and the second frequency band are then compared to get a compensation ratio, i.e., the total compensation quantity of the first frequency band to the second frequency band. Finally, the parameter setting of the equalizer is adjusted according to feedback of the compensation ratio. Optimum gain control of the adaptive equalizer can thus be accomplished to compensate signal attenuation to the transmitted signal caused by the channel.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: August 17, 2010
    Assignee: Realtek Semiconductor Corp.
    Inventors: Yu-Pin Chou, Chao-Hsin Lu
  • Patent number: 7778375
    Abstract: A clock generator and a data recovery circuit. The clock generator includes a voltage control oscillator (VCO) for generating a sampling clock and multi-phase clocks, a multiplexer for receiving the multi-phase clocks and selecting one of the multi-phase clocks to generate a selected clock according to a selection signal, a phase-frequency detector for receiving the selected clock and a reference clock and generating a phase-frequency error signal, a charge pump and loop filter for receiving the phase-frequency error signal and generating a control voltage, a phase detector for receiving the sampling clock and an input signal and generating a phase error signal, and a digital low-pass filter for receiving the phase error signal and generating the selection signal. The digital low-pass filter clears an accumulated phase error when it generates the selection signal to force the multiplexer to change the phase.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: August 17, 2010
    Assignee: Realtek Semiconductor Corp.
    Inventor: Chao-Hsin Lu
  • Publication number: 20090227222
    Abstract: A wireless receiver with automatic gain control and a method for automatic gain control of a receiving circuit utilized in a wireless receiver are provided. The receiving circuit includes a programmable gain amplifier and a low noise amplifier, and the method includes: comparing a gain code of the programmable gain amplifier with a predetermined code range, wherein the gain code is determined by a frequency signal received through the low noise amplifier; and adjusting a gain of the low noise amplifier when the gain code is out of the predetermined code range.
    Type: Application
    Filed: March 4, 2008
    Publication date: September 10, 2009
    Inventors: Chao-Hsin Lu, Chang-Fu Kuo
  • Publication number: 20090190035
    Abstract: Disclosed is a video signal processing circuit, which comprises: first and second DC level adjusting circuits, for adjusting the DC level of a video signal to generate a first adjusted video signal and a second adjusted video signal respectively; an analog to digital converter, for sampling a data signal of the video signal according to a target clock signal; a sync signal separating circuit, for separating a sync signal from the first adjusted video signal; a sync signal processor, for detecting the existence of the sync signal, and outputting a sync clock signal if the sync signal exists; a multiplexer, for outputting one of the sync clock signal or predetermined clock signal as the target clock signal according to a selecting signal; and a processor unit, for controlling the first DC level adjusting circuit, the second DC level adjusting circuit, and for generating the selecting signal.
    Type: Application
    Filed: January 29, 2008
    Publication date: July 30, 2009
    Inventor: Chao-Hsin Lu
  • Patent number: 7453971
    Abstract: A sampling-error phase compensating device and a method thereof for sequentially sampling data signals and outputting sampled data signals.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: November 18, 2008
    Assignee: Realtek Semiconductor Corp.
    Inventor: Chao-Hsin Lu
  • Patent number: 7372298
    Abstract: A chip with an adjustable pinout function is disclosed. The chip includes a first pinout, a second pinout, a logic circuit, and a selecting circuit. The logic circuit includes a first port and a second port. The selecting circuit, which is coupled to the logic circuit, the first pinout, and the second pinout, controls the first pinout to be coupled to the first port or the second port, and controls the second pinout to be coupled to the first port or the second port.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: May 13, 2008
    Assignee: Realtek Semiconductor Corp.
    Inventors: Hung-Jen Chu, Chao-Hsin Lu, Shiu-Rong Tong, Yu-Pin Chou
  • Publication number: 20080030584
    Abstract: The invention discloses an image processing system comprising a video source system, a transmission medium, and a television system. The image processing systems of the video source system and the television system are equipped with an additional digital-to-analog converter and an additional analog-to-digital converter.
    Type: Application
    Filed: July 25, 2007
    Publication date: February 7, 2008
    Inventors: Jui-Yuan Tsai, Chao-Hsin Lu
  • Publication number: 20080025453
    Abstract: A sampling-error phase compensating device and a method thereof for sequentially sampling data signals and outputting sampled data signals.
    Type: Application
    Filed: October 2, 2007
    Publication date: January 31, 2008
    Applicant: REALTEK SEMICONDUCTOR CORP.
    Inventor: Chao-Hsin Lu
  • Patent number: 7279944
    Abstract: A clock signal generator and method thereof are provided for a system to generate an output signal. The apparatus comprises: a delay circuit for generating a delayed clock with a first time, a delay module for generating delayed signal(s), and a decision circuit for comparing the delayed signal(s) with the delayed clock to obtain the relative relation between the delay time and the first time and controlling a delay time of an input signal according to the relative relation to generate the output signal.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: October 9, 2007
    Assignee: Realtek Semiconductor Corp.
    Inventor: Chao-Hsin Lu
  • Patent number: 7250793
    Abstract: A low voltage differential signaling (LVDS) driving apparatus is disclosed, which comprises an LVDS output circuit to output an LVDS differential signal; a switch circuit coupled to the LVDS output circuit to control the phase of the LVDS differential signal; and a reference current control circuit to provide a control voltage to the LVDS output circuit such that the magnitude of the LVDS differential signal is determined based on the control voltage.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: July 31, 2007
    Assignee: Realtek Semiconductor Corp.
    Inventor: Chao-Hsin Lu
  • Publication number: 20070171991
    Abstract: A current-mode differential signal transmitting circuit is disclosed, including a transmitter having a first transmitting module and a second transmitting module. The first transmitting module includes a plurality of first outputting units to output first data and a clock outputting signal. The second transmitting module includes a plurality of second outputting units for outputting second data, and the first and second transmitting modules share this clock outputting unit.
    Type: Application
    Filed: January 26, 2007
    Publication date: July 26, 2007
    Inventors: Hsien-Chun Chang, Chao-Hsin Lu, Ming-Yen Hsu
  • Patent number: 7242735
    Abstract: A data recovery system and method is disclosed, which comprises an oversampler, a phase detection circuit, a data pick circuit, a data overlap/skip detection circuit and a data correction circuit. The oversampler oversamples an input signal and thus generates oversampled signals. The phase detection circuit receives for detecting transitions of the oversampled signals and outputting a phase signal. The data pick circuit receives the phase signal, accordingly groups the oversampled signals into n groups and picks one group as an output data. The data overlap/skip detection circuit determines if data is overlapped or skipped according to the phase signal and the last phase signal. The data correction circuit corrects data when data is overlapped or skipped and outputs an accurate output data.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: July 10, 2007
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chao-Hsin Lu, Yi-Shu Chang, Shiu-Rong Tong, Kuang-Hsi Hsieh
  • Publication number: 20070071157
    Abstract: A clock recovery circuit for generating an output clock corresponding to an input signal is disclosed. The clock recovery circuit includes: a phase detection unit for receiving the input signal and the output clock and generating a phase error signal according to the input signal and the output clock; a serial-to-parallel converting unit coupled to the phase detection unit for converting the serial phase error signal to a plurality of parallel phase error signals; a plurality of charging/discharging units coupled to the serial-to-parallel converting unit for generating an adjustment signal according to the parallel phase error signals; and an oscillator for generating the output clock according to the adjustment signal.
    Type: Application
    Filed: September 4, 2006
    Publication date: March 29, 2007
    Inventor: Chao-Hsin Lu
  • Publication number: 20060220687
    Abstract: A chip with an adjustable pinout function is disclosed. The chip includes a first pinout, a second pinout, a logic circuit, and a selecting circuit. The logic circuit includes a first port and a second port. The selecting circuit, which is coupled to the logic circuit, the first pinout, and the second pinout, controls the first pinout to be coupled to the first port or the second port, and controls the second pinout to be coupled to the first port or the second port.
    Type: Application
    Filed: March 24, 2006
    Publication date: October 5, 2006
    Inventors: Hung-Jen Chu, Chao-Hsin Lu, Shiu-Rong Tong, Yu-Pin Chou
  • Publication number: 20060097767
    Abstract: A clock signal generator and method thereof are provided for a system to generate an output signal. The apparatus comprises: a delay circuit for generating a delayed clock with a first time, a delay module for generating delayed signal(s), and a decision circuit for comparing the delayed signal(s) with the delayed clock to obtain the relative relation between the delay time and the first time and controlling a delay time of an input signal according to the relative relation to generate the output signal.
    Type: Application
    Filed: November 8, 2005
    Publication date: May 11, 2006
    Inventor: Chao-Hsin Lu
  • Publication number: 20060078079
    Abstract: A clock generator and a data recovery circuit. The clock generator includes a voltage control oscillator (VCO) for generating a sampling clock and multi-phase clocks, a multiplexer for receiving the multi-phase clocks and selecting one of the multi-phase clocks to generate a selected clock according to a selection signal, a phase-frequency detector for receiving the selected clock and a reference clock and generating a phase-frequency error signal, a charge pump and loop filter for receiving the phase-frequency error signal and generating a control voltage, a phase detector for receiving the sampling clock and an input signal and generating a phase error signal, and a digital low-pass filter for receiving the phase error signal and generating the selection signal. The digital low-pass filter clears an accumulated phase error when it generates the selection signal to force the multiplexer to change the phase.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 13, 2006
    Inventor: Chao-Hsin Lu
  • Publication number: 20060074682
    Abstract: A method to assess signal transmission quality and the adjust method thereof are proposed. First, different time points of a control signal at a receiving end are acquired and the number of signal transition in a predetermined time interval is counted. Next, the number of signal transition is recorded and compared to obtain a comparison result. The quality of control signal is then determined based on the comparison result. Besides, the parameter setting of the receiving end is adjusted according to the quality of the control signal received by the receiving end to get a better performance setting.
    Type: Application
    Filed: September 15, 2005
    Publication date: April 6, 2006
    Inventors: Yu-Pin Chou, Chao-Hsin LU, Hsu-Jung Tung