Patents by Inventor Jian Rong

Jian Rong 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: 20140253084
    Abstract: A power converter control circuit includes a feedback circuit and a pulse width modulation signal generating circuit for configuring a power stage circuit to provide power to a load. The feedback circuit generates a first gain signal and a second gain signal according to an output voltage sensing signal coupled with the load. The feedback circuit further generates a feedback signal according to the first gain signal and the second gain signal. The pulse width modulation signal generating circuit configures the operation of the power stage circuit according to the feedback signal and a reference signal. Moreover, the feedback circuit and the pulse width modulation signal generating circuit are configured on the same integrated circuit package.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 11, 2014
    Applicant: Richtek Technology Corporation
    Inventors: Ching-Jan CHEN, Shao-Hung LU, Jian-Rong HUANG
  • Patent number: 8766617
    Abstract: An exemplary method for improving voltage identification (VID) transient response is adapted to a voltage regulator and includes steps of: continuously sensing an inductor current of the voltage regulator to thereby output a current sense signal; during a steady state operation period, sampling the current sense signal to thereby obtain a sampling result for providing a droop control signal; after entering a VID transient period from the steady state operation period, holding the sampling result for providing the droop control signal; and taking the droop control signal as a consideration factor of producing a pulse width modulation signal to regulate an output voltage of the voltage regulator.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: July 1, 2014
    Assignee: Richtek Technology Corp
    Inventors: Yi-Cheng Wan, Jian-Rong Huang, Cheng-Feng Chung, Hung-Chun Peng
  • Publication number: 20140125688
    Abstract: The present invention provides a method for enhancing contrast of a color image displayed on a display system and an image processing system utilizing the same. In the present invention, the gray values of R, G, and B components of one color image are separately counted during processing the image. When calculating the corresponding output values for the gray values of R, G, and B components in each pixel, they are adapted to ratios between the gray values of R, G, and B components. Therefore, the present invention can effectively maintain the color distribution for a considerable degree and greatly enhance the image contrast.
    Type: Application
    Filed: April 25, 2013
    Publication date: May 8, 2014
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Jian-rong CHEN, Chun-chieh Chiu
  • Patent number: 8710815
    Abstract: The present invention discloses a voltage regulator, and a control circuit and a control method therefor. The method for controlling a voltage regulator comprises: receiving a dynamic voltage identification signal which instructs the voltage regulator to change its output voltage to a target voltage, and generating a compensation signal to shorten an interval for the output voltage of the voltage regulator to reach the target voltage.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: April 29, 2014
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Chieh-Min Feng, Ting-Hung Wang, Chung-Sheng Cheng, Jian-Rong Huang
  • Publication number: 20140021929
    Abstract: The present invention provides a multi-phase switching regulator and a droop circuit for use in the multi-phase switching regulator. The multi-phase switching regulator generates pulse width modulation (PWM) signals according to an output voltage and a droop signal, to drive a plurality of switching sets to convert an input voltage to the output voltage. The droop circuit detects the sum of the currents generated by the plurality of switching sets and provides the droop signal which is related to the sum of the currents to the multi-phase switching regulator. The droop signal can be used for over current protection (OCP) or for the droop control.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 23, 2014
    Applicant: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Yu-Ta Lin, Jian-Rong Huang, Yi-Cheng Wan, Chien-Hui Wang, Yuan-Wen Hsiao
  • Publication number: 20140016638
    Abstract: A packet-based data network including: an audio/video network including a packet-switched network over which data including audio and/or video data packets can be carried; at least one data source connected to the network and operable to assemble packetised data comprising audio/video data at a first resolution and at a second resolution greater than the first resolution, and to transmit data packets carrying multiple audio/video streams at the first resolution by multicast network transmission; and at least one client connected to the network, being a data handling device for handling packetised audio/video data and being arranged to join the multicast group to receive the multiple audio/video streams at the first resolution. The client is associated with a graphical user interface configured in conjunction with a processor to select an audio/video stream.
    Type: Application
    Filed: August 13, 2013
    Publication date: January 16, 2014
    Applicant: Sony Europe Limited
    Inventors: Jian-Rong CHEN, Daniel Wilson, Daphne Economou
  • Patent number: 8625589
    Abstract: A packet-based data network including: an audio/video network comprising: a packet-switched network over which data including audio and/or video data packets can be carried; at least one data source connected to the network and operable to assemble packetised data comprising audio/video data at a first resolution and at a second resolution greater than the first resolution, and to transmit data packets carrying multiple audio/video streams at the first resolution by multicast network transmission; at least one client connected to the network, being a data handling device for handling packetised audio/video data and being arranged to join the multicast group to receive the multiple audio/video streams at the first resolution, wherein the client is associated with a graphical user interface configured in conjunction with a processor to select an audio/video stream, and the processor is arranged to issue a unicast command to cause transmission of a selected audio/video stream at the second resolution from the
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: January 7, 2014
    Assignee: Sony United Kingdom Limited
    Inventors: Jian-Rong Chen, Daniel Wilson, Daphne Economou
  • Publication number: 20130276252
    Abstract: An oral care implement, such as a toothbrush (100), comprises a handle (110) and a head (120). A plurality of tooth cleaning elements (130) may be provided on a front surface (121) of the head (120). The head (120) is formed by a plurality of spaced-apart segments (140-145) made of a rigid material. The segments (140-145) are isolated from one another by channels (157-159B) containing an elastomeric material (146) that flexibly connects the segments (140-145) together. The oral care implement further comprises an elastomeric soft tissue cleaner (200) located on a rear surface (122) of the head (120) opposite the front surface (121) of the head (120). Each of the segments (140-145) comprises a protuberance (163-169) made of the rigid material that extends through the elastomeric soft tissue cleaner (200) and is exposed therethrough.
    Type: Application
    Filed: December 21, 2010
    Publication date: October 24, 2013
    Applicant: Colgate-Palmolive Company
    Inventors: Wen Jin Xi, Yu Liu, Jian Rong Zhou
  • Publication number: 20130255020
    Abstract: An oral care implement, such as a toothbrush, comprising a flexible head formed of a plurality of flexibly connected segments. In one embodiment, the invention can be an oral care implement comprising a handle and a head. The head can be formed by a plurality of spaced-apart segments constructed of a rigid material and separated by a channel containing an elastomeric material. An elastomeric cleaning element comprising, a base portion and an upper portion extends form a front surface of the head. The elastomeric cleaning element extends from and is connected to the elastomeric material of the channel so that the base portion overlies a portion of each of the front surfaces of the segments on opposing sides of the channel. In another embodiment, the invention can be the elastomeric cleaning element itself, irrespective of the type of head in which it is incorporated. In yet another embodiment, the base portion can be tapered.
    Type: Application
    Filed: December 21, 2010
    Publication date: October 3, 2013
    Inventors: Wen Jin Xi, Liu Yu, Jian Rong Zhou
  • Publication number: 20130255018
    Abstract: An oral care implement, such as a toothbrush. In one embodiment, the invention can be an oral care implement comprising a handle and a head. A plurality of tooth cleaning elements may be provided on a front surface of the head. The head is formed by a plurality of spaced-apart segments formed of a rigid material. The segments are isolated from one another by channels containing an elastomeric material that flexibly connects the segments together. The oral care implement further comprises an elastomeric soft tissue cleaner located on a rear surface of the head opposite the front surface of the head. The elastomeric soft tissue cleaner comprises a plurality of grooves that are aligned with the channels.
    Type: Application
    Filed: December 21, 2010
    Publication date: October 3, 2013
    Applicant: COLGATE-PALMOLIVE COMPANY
    Inventors: Wen Jin Xi, Liu Yu, Jian Rong Zhou
  • Publication number: 20130255021
    Abstract: An oral care implement, such as a toothbrush. In one aspect, the invention is an oral care implement comprising a handle and a head. A plurality of tooth cleaning elements may extend from a front surface of the head, which is formed by a plurality of spaced-apart segments formed of a rigid material, wherein the plurality of segments include a cruciform segment integrally formed with and extending from a distal end of the handle, a first pair of segments located on opposite sides of a longitudinal portion of the cruciform segment, and a second pair of segments located on opposite sides of the longitudinal portion of the cruciform segment, the first pair of segments located on an opposite side of a transverse portion of the cruciform segment from the second pair of segments. The segments of the first and second pairs are flexibly connected to the cruciform segment.
    Type: Application
    Filed: December 21, 2010
    Publication date: October 3, 2013
    Applicant: COLGATE-PALMOLIVE COMPANY
    Inventors: Wen Jin Xi, Liu Yu, Jian Rong Zhou
  • Patent number: 8539964
    Abstract: Hair curling tong (1) with a fixed handle (2) and a heated tube body (12) fixed thereto provided with clamp (17) that is fixed in a tilting way to the curling tong (1) and can be tilted between a closed position wherein the clamp (17) is held in contact with the tube body (12) by means of a spring (18) activated by a button (20) and an open position wherein the clamp is tilted away from the tube body (12), characterized in that the clamp (17) is fixed in a rotatable way to the curling tong (1) by means of a ring (10) which is rotatable over 360° around the longitudinal axis (X-X?) of the tube body (12).
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: September 24, 2013
    Assignee: Eurasia Concepts, Inc.
    Inventor: Li Jian Rong
  • Patent number: 8508206
    Abstract: The present invention discloses an adaptive constant ON time adjustment circuit, which generates a square wave signal having a constant normal ON time during normal operation, for controlling a power stage circuit to convert an input voltage to an output voltage. When the output voltage is shifted from low to high, during the transient period, the ON time is adjusted longer; and when the output voltage is shifted from high to low, during the transient period, the ON time is adjusted shorter.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: August 13, 2013
    Assignee: Richteck Technology Corporation
    Inventors: Yi-Cheng Wan, Hung-Chun Peng, Jian-Rong Huang, Kuo-Lung Tseng
  • Patent number: 8502515
    Abstract: A multiphase DC-DC converting circuit for providing power to a load is disclosed, having power stage circuits, channel current converting circuits, current detecting circuits, a transconductance amplifier circuit, a comparator circuit, and a channel current balance circuit. The current detecting circuits detect current signals of current channels, and the transconductance amplifier circuit and the comparator circuit are coupled with the current detecting circuits to receive the voltage difference across a resistor, and to generate a total current detecting signal provided to the load. The channel current converting circuit is coupled with the current detecting circuits to generate channel current detecting signals. The channel current balance circuit is coupled with the comparator circuit, the transconductance amplifier circuit and the channel current converting circuit to balance the current signals of the current channels.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: August 6, 2013
    Assignee: Richtek Technology Corporation
    Inventors: Yi-Cheng Wan, Jian-Rong Huang, Hung-Chun Peng
  • Patent number: D677058
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: March 5, 2013
    Assignee: Colgate-Palmolive Company
    Inventors: Wen Jin Xi, Guang Sheng Guo, Jian Rong Zhou
  • Patent number: D678679
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: March 26, 2013
    Assignee: Colgate-Palmolive Company
    Inventors: Wen Jin Xi, Yu Liu, Jian Rong Zhou
  • Patent number: D678680
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: March 26, 2013
    Assignee: Colgate-Palmolive Company
    Inventors: Wen Jin Xi, Yu Liu, Jian Rong Zhou
  • Patent number: D678681
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: March 26, 2013
    Assignee: Colgate-Palmolive Company
    Inventors: Wen Jin Xi, Guang Sheng Guo, Jian Rong Zhou
  • Patent number: D686825
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: July 30, 2013
    Assignee: Colgate-Palmolive Company
    Inventors: Wen Jin Xi, Yu Liu, Jian Rong Zhou
  • Patent number: D688876
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: September 3, 2013
    Assignee: Colgate-Palmolive Company
    Inventors: Wen Jin Xi, Yu Liu, Jian Rong Zhou