Patents by Inventor Ping-Sheng Chen

Ping-Sheng Chen 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: 10847969
    Abstract: A constant power protection circuit includes a voltage conversion circuit, a current detection circuit, a voltage detection circuit, a power setting circuit, a voltage feedback circuit, an addition circuit, a current feedback circuit, and a signal isolation unit. When an output voltage of the voltage conversion circuit is larger than a voltage of the voltage detection circuit and an output current of the voltage conversion circuit is larger than a current of the current detection circuit, the power setting circuit provides a comparison signal to the current feedback circuit, the current feedback circuit outputs a feedback signal to the signal isolation unit. According to a signal outputted from the signal isolation unit, the voltage conversion circuit enables a constant power mode.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: November 24, 2020
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Ping-Sheng Chen, Tso-Jen Peng
  • Publication number: 20190372336
    Abstract: A constant power protection circuit includes a voltage conversion circuit, a current detection circuit, a voltage detection circuit, a power setting circuit, a voltage feedback circuit, an addition circuit, a current feedback circuit, and a signal isolation unit. When an output voltage of the voltage conversion circuit is larger than a voltage of the voltage detection circuit and an output current of the voltage conversion circuit is larger than a current of the current detection circuit, the power setting circuit provides a comparison signal to the current feedback circuit, the current feedback circuit outputs a feedback signal to the signal isolation unit. According to a signal outputted from the signal isolation unit, the voltage conversion circuit enables a constant power mode.
    Type: Application
    Filed: August 14, 2018
    Publication date: December 5, 2019
    Inventors: Ping-Sheng CHEN, Tso-Jen PENG
  • Patent number: 10164539
    Abstract: A power conversion system with clamp mode switching includes a clamp conversion circuit, a switching circuit module, a PWM control module, and a feedback control module. The PWM control module stabilizes a feedback voltage when the feedback control module feeds the feedback voltage back to the switching circuit module and the PWM control module. The switching circuit module switches the clamp conversion circuit to operate in an active clamp mode or a non-active clamp mode.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: December 25, 2018
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Tso-Jen Peng, Ping-Sheng Chen
  • Patent number: 9899858
    Abstract: A power adapter with a power saving mode includes a power adaptation unit. The power adaptation unit includes a pulse width modulation control unit and a power saving signal receiver. The power saving signal receiver is electrically connected to the pulse width modulation control unit. When the power adapter enters a working status, the power adapter charges a battery. After the power saving signal receiver receives a battery fully-charged signal, the power adapter enters a sleeping status.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: February 20, 2018
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Ping-Sheng Chen, Yang Wang
  • Publication number: 20170149251
    Abstract: A power adapter with a power saving mode includes a power adaptation unit. The power adaptation unit includes a pulse width modulation control unit and a power saving signal receiver. The power saving signal receiver is electrically connected to the pulse width modulation control unit. When the power adapter enters a working status, the power adapter charges a battery. After the power saving signal receiver receives a battery fully-charged signal, the power adapter enters a sleeping status.
    Type: Application
    Filed: February 10, 2016
    Publication date: May 25, 2017
    Inventors: Ping-Sheng CHEN, Yang WANG
  • Patent number: 8769188
    Abstract: The invention provides a nonvolatile memory controller. In one embodiment, the nonvolatile memory controller receives new data for writing a nonvolatile memory from a host, and comprises a signature calculating circuit, a signature buffer, a signature comparison circuit, a data comparison circuit, and a nonvolatile memory interface circuit. The signature calculating circuit calculates a first signature according to the new data. The signature buffer outputs a second signature corresponding to old data stored in the nonvolatile memory, wherein the old data has the same logical address as that of the new data. The signature comparison circuit determines whether the first signature is identical to the second signature. The nonvolatile memory interface circuit writes the new data to the nonvolatile memory when the first signature is determined to be different from the second signature by the signature comparison circuit.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: July 1, 2014
    Assignee: Mediatek Inc.
    Inventors: Li-Chun Tu, Chao-Yi Wu, Ping-Sheng Chen
  • Patent number: 8381018
    Abstract: The invention provides a method for data recovery. In one embodiment, a memory comprises a plurality of pages for data storage. First, first data is obtained from a host. A first page for storing the first data is then selected from the pages of the memory. A start page link indicating the first page is then stored in the memory. The first data, a first page link indicating a next page, and first FTL fragment data corresponding to the first page are then written into the first page. Next data is then obtained from the host. The next data, a next page link indicating a subsequent page, and FTL fragment data corresponding to the next page are written into the next page.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: February 19, 2013
    Assignee: Mediatek Inc.
    Inventors: Chia-Wen Lee, Shih-Hsin Chen, Shih-Ta Hung, Ping-Sheng Chen, Po-Ching Lu
  • Publication number: 20120233362
    Abstract: A buffer management method operates by receiving a read command, wherein the read command comprises a read destination address for designating an associated area of a storage media; receiving write commands, wherein each of the write command comprises a data block and a write destination address for designating an associated location of the storage media to store the data block; buffering the data blocks of the write commands in a buffer; generating a latest list, wherein the latest list comprises a plurality of buffer indexes indicating buffer areas for storing the data blocks associated with the latest certain amount of received write commands; and determining whether the read destination address of the read command is associate with the latest list.
    Type: Application
    Filed: May 17, 2012
    Publication date: September 13, 2012
    Applicant: MEDIATEK INC.
    Inventors: Tse-Hong WU, Shih-Hsin CHEN, Shih-Ta HUNG, KuanYu LAI, Tai-Liang LIN, Ping-Sheng CHEN
  • Patent number: 8259545
    Abstract: A controller for recovering disc management information is provided. The controller controls a pickup head unit to search the TDMAs for readable disc management information which is included in an in-use TDMA of the TDMAs; then determines whether a piece of information associated with an inconsistency flag of the readable disc management information is reliable. When the controller detects that the piece of information is unreliable, the controller determines at least a detection condition according to the information which is included in the readable disc management information and the in-use TDMA, and controls the pickup head unit to detect the recording medium to determine an update on the piece of information associated with the inconsistency flag under at least a detection condition. The controller generates update disc management information according to the readable disc management information and the update on the piece of information associated with the inconsistency flag.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: September 4, 2012
    Assignee: Mediatek Inc.
    Inventors: Shih-Ta Hung, Shih-Hsin Chen, Ping-Sheng Chen
  • Publication number: 20120216380
    Abstract: A tractor tool for a brake cylinder contains a body including a hollow cylinder, a fixed support, a movable control bar including two wings; the cylinder including an engaging portion, a first tube, a first plug, a first retaining block, a second plug, a second retaining block, and a positioning member; wherein the first tube includes a first inward conical fence; the first retaining block including two first semi-arcuate pieces connected; the second retaining block includes two second semi-arcuate pieces; wherein the first plug includes a second inward conical surface, and the second plug includes a third inward conical surface; the positioning member includes a conical controlling plane; a spindle assembly including the spindle, wherein the spindle includes a first segment and a second segment.
    Type: Application
    Filed: February 24, 2011
    Publication date: August 30, 2012
    Inventor: PING SHENG CHEN
  • Patent number: 8205059
    Abstract: An optical disc drive is provided, mainly comprising a buffer, a processor and a driving module for accessing an optical disc. The optical disc drive receives a plurality of write commands. Each write command comprises a data block and a destination address. The buffer buffers data blocks to be recorded to the optical disc with corresponding write commands in either a random mode or a sequential mode. The processor schedules a recording operation based on the write commands, and selectively switches the buffer to the random mode or to the sequential mode based on arrangements of data blocks buffered in the buffer. The driving module is controlled by the processor to perform the recording operation, whereby the data blocks are recorded to the optical disc when a start recording condition is met. Specifically, the start recording condition varies with the random or sequential modes.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: June 19, 2012
    Assignee: Mediatek Inc.
    Inventors: Tse-Hong Wu, Shih-Hsin Chen, Shih-Ta Hung, KuanYu Lai, Tai-Liang Lin, Ping-Sheng Chen
  • Publication number: 20110289352
    Abstract: The invention provides a method for data recovery. In one embodiment, a memory comprises a plurality of pages for data storage. First, first data is obtained from a host. A first page for storing the first data is then selected from the pages of the memory. A start page link indicating the first page is then stored in the memory. The first data, a first page link indicating a next page, and first FTL fragment data corresponding to the first page are then written into the first page. Next data is then obtained from the host. The next data, a next page link indicating a subsequent page, and FTL fragment data corresponding to the next page are written into the next page.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: MEDIATEK INC.
    Inventors: Chia-Wen Lee, Shih-Hsin Chen, Shih-Ta Hung, Ping-Sheng Chen, Po-Ching Lu
  • Publication number: 20110267931
    Abstract: A controller for recovering disc management information is provided. The controller controls a pickup head unit to search the TDMAs for readable disc management information which is included in an in-use TDMA of the TDMAs; then determines whether a piece of information associated with an inconsistency flag of the readable disc management information is reliable. When the controller detects that the piece of information is unreliable, the controller determines at least a detection condition according to the information which is included in the readable disc management information and the in-use TDMA, and controls the pickup head unit to detect the recording medium to determine an update on the piece of information associated with the inconsistency flag under at least a detection condition. The controller generates update disc management information according to the readable disc management information and the update on the piece of information associated with the inconsistency flag.
    Type: Application
    Filed: July 11, 2011
    Publication date: November 3, 2011
    Applicant: MEDIATEK INC.
    Inventors: Shih-Ta Hung, Shih-Hsin Chen, Ping-Sheng Chen
  • Patent number: 8009528
    Abstract: A method for recovering disc management information of a recording medium. (a) When the recording medium is not closed, a readable TDMS which is included in an in-use TDMA of TDMAs of the recording medium and is readable is searched for. (b) It is determined whether a piece of information associated with an inconsistency flag of the readable TDMS is reliable. (c) If the associated piece of information is unreliable, at least a detection condition is determined according to the information included in the readable TDMS and the in-use TDMA. (d) A detection procedure, constrained by the at least the detection condition, is performed on the recording medium for determining an update on the piece of information associated with the inconsistency flag. (e) An update TDMS is generated according to the readable TDMS and the update on the piece of information associated with the inconsistency flag.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: August 30, 2011
    Assignee: Mediatek Inc.
    Inventors: Shih-Ta Hung, Shih-Hsin Chen, Ping-Sheng Chen
  • Publication number: 20110119429
    Abstract: The invention provides a nonvolatile memory controller. In one embodiment, the nonvolatile memory controller receives new data for writing a nonvolatile memory from a host, and comprises a signature calculating circuit, a signature buffer, a signature comparison circuit, a data comparison circuit, and a nonvolatile memory interface circuit. The signature calculating circuit calculates a first signature according to the new data. The signature buffer outputs a second signature corresponding to old data stored in the nonvolatile memory, wherein the old data has the same logical address as that of the new data. The signature comparison circuit determines whether the first signature is identical to the second signature. The nonvolatile memory interface circuit writes the new data to the nonvolatile memory when the first signature is determined to be different from the second signature by the signature comparison circuit.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 19, 2011
    Applicant: MEDIATEK INC.
    Inventors: Li-Chun Tu, Chao-Yi Wu, Ping-Sheng Chen
  • Publication number: 20110004720
    Abstract: A method for performing random writing on a NV memory includes: writing page mapping information regarding a portion of a full range of addresses of the NV memory and providing at least one page mapping table corresponding to a predetermined size; and accessing the NV memory according to the page mapping information. An apparatus for performing full range random writing on an NV memory includes: a controller arranged to perform the full range random writing; and a program code, at least a portion of which is embedded within the controller or received from outside the controller. The controller executing the program code writes page mapping information regarding at least a portion of a full range of addresses of the NV memory and provides at least one page mapping table corresponding to a predetermined size. The controller executing the program code accesses the NV memory according to the page mapping information.
    Type: Application
    Filed: July 2, 2009
    Publication date: January 6, 2011
    Inventors: Chun-Ying Chiang, Ping-Sheng Chen
  • Patent number: 7821895
    Abstract: A data managing method for an optical disc drive writing data into an optical disc having defects is provided. The optical disc has a user data area and a spare area. The optical disc drive includes a first buffering space and a second buffering space. The data managing method includes: when the first buffering space receives a data corresponding to a defect, not suspending the first buffering space from receiving the user data, and transferring the data, corresponding to the defect and in the first buffering space, to the second buffering space; and when data amount in the second buffering space reaches a predetermined value, suspending the optical disc drive from writing data in the first buffering space into the user data area, and driving the optical disc drive to write data in the second buffering space into the spare area.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: October 26, 2010
    Assignee: Mediatek Inc.
    Inventors: Ping-Sheng Chen, Shih-Hsin Chen, Ching-Wen Hsueh, Ying-Che Hung
  • Publication number: 20090316551
    Abstract: An apparatus for writing encoded data into a storage medium includes a quality-check signal generator, a defect judgment unit and a verification unit. The quality-check signal generator is utilized for generating a quality-check signal; the defect judgment unit is coupled to the quality-check signal generator and is utilized for generating a defect judgment result according to the quality-check signal; and the verification unit is coupled to the defect judgment unit and is utilized for referring to the defect judgment result to selectively verify the encoded data that have been written into the storage medium.
    Type: Application
    Filed: March 17, 2009
    Publication date: December 24, 2009
    Inventors: Hang-Kaung Shu, Shih-Hsin Chen, Jin-Bin Yang, Ping-Sheng Chen
  • Patent number: 7607001
    Abstract: A method is provided for simultaneously loading and executing program code in a circuit system. The circuit system includes a plurality of memory devices, a microprocessor, and a loading circuit. The method includes dividing the program code into a plurality of code divisions and utilizing the microprocessor to execute at least a code division when the loading circuit loads any other code division into a memory device of the plurality of memory devices.
    Type: Grant
    Filed: December 27, 2004
    Date of Patent: October 20, 2009
    Assignee: Mediatek Incorporation
    Inventors: Li-Chun Tu, Ping-Sheng Chen
  • Publication number: 20090190448
    Abstract: A data managing method for an optical disc drive writing data into an optical disc having defects is provided. The optical disc has a user data area and a spare area. The optical disc drive includes a first buffering space and a second buffering space. The data managing method includes: when the first buffering space receives a data corresponding to a defect, not suspending the first buffering space from receiving the user data, and transferring the data, corresponding to the defect and in the first buffering space, to the second buffering space; and when data amount in the second buffering space reaches a predetermined value, suspending the optical disc drive from writing data in the first buffering space into the user data area, and driving the optical disc drive to write data in the second buffering space into the spare area.
    Type: Application
    Filed: April 2, 2009
    Publication date: July 30, 2009
    Inventors: Ping-Sheng Chen, Shih-Hsin Chen, Ching-Wen Hsueh, Ying-Che Hung