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: 20070127221
    Abstract: An exemplary computer enclosure includes a chassis, a pair of fixing members, a plurality of slats, and an actuating member. The chassis includes a pair of first parallel panels, and a second panel perpendicular to the first panels. The first panels and second panel cooperatively define an opening therebetween. The fixing members are attached to the first panels. The slats are pivotably attached to the first panels to adjustably shield the opening. Each of the slats includes a gear shaft fixed to an end thereof. The actuating member includes a rack bar slidably attached to one of the first panels to mesh with the gears shafts. The slats are rotatable clockwise or anticlockwise. Thus, the opening may be adjustably exposed to control an amount of air entering the chassis for dissipation of heat.
    Type: Application
    Filed: September 28, 2006
    Publication date: June 7, 2007
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yu-Hsu Lin, Ke-You Hu, Jian-Rong Zheng
  • Patent number: 7223623
    Abstract: A method for forming a modified semiconductor having a number of band gaps involves providing a semiconductor having a surface and a quantum region which emits photons in response to electrical or optical stimulation, the quantum region having an original band gap and being disposed under the surface and applying a number of layers of a number of materials to a number of selected regions of the surface, the materials being adapted to cause, upon thermal annealing, a number of different degrees of intermixing in a number of portions of the quantum region disposed immediately below each of the selected regions of the surface. The layers of materials can be applied in a dot or line pattern, or both, to increase the plurality of band gap tuning. The method includes thermally annealing the layers to the surface.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: May 29, 2007
    Assignees: Agency for Science, Technology and Research, National University of Singapore
    Inventors: Jing Hua Teng, Soo Jin Chua, Jian Rong Dong
  • Publication number: 20060146184
    Abstract: A video network comprises: a plurality of video sources to launch onto the network first, higher resolution, video data and second, lower resolution, video data providing a lower resolution representation of the higher resolution video data; at least one destination device operable to process video received via the network; a network switch for selectively routing data from the video sources to the destination devices; and a network control arrangement connected to the network switch and having: a display device; a graphical user interface (GUI) arranged to display, on the display device, the lower resolution representations of video data from at least a subset of the plurality of sources together with identifiers associating the lower resolution representations with the respective sources; means for user selection, by use of the GUI, of a source of video of the higher resolution and a corresponding destination device; and means for controlling the routing of the higher resolution video data from the selected
    Type: Application
    Filed: January 16, 2004
    Publication date: July 6, 2006
    Inventors: Clive Gillard, Matthew Compton, Daniel Wilson, Jian-Rong Chen
  • Patent number: 7049800
    Abstract: A switching mode voltage regulator comprises a pulse width modulator and an adjustable one-shot circuit to generate an adjustable signal based on an input voltage, an adjustable voltage, and a PWM signal from the pulse width modulator at light loading to switch a high-side switch of an output stage in the voltage regulator. The ON duty of the adjustable signal is controlled by the adjustable voltage, such that it will be larger than that of the PWM signal and as a result, the number of switching the switch of the output stage is decreased, thereby reducing the switching loss and improving the efficiency of the voltage regulator.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: May 23, 2006
    Assignee: Richtek Technology Corp.
    Inventors: Jian-Rong Huang, Liang-Pin Tai, Hung-I Wang, Chung-Lung Pai, Jing-Mong Liu
  • Patent number: 7023253
    Abstract: In a noise sensitivity improved switching system and method thereof, comprised sensing the output voltage of the switching system to generate a feedback signal, respectively amplifying the feedback signal by two gains to generate two signals in phase or out of phase, filtering one of the two amplified signals, and summing or comparing the filtered signal and the other one, thereby reducing the noise interference to the switching system.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: April 4, 2006
    Assignee: Richtek Technology Corp.
    Inventors: Jian-Rong Huang, Kuo-Ping Liu, Kent Huang, Liang-Pin Tai
  • Publication number: 20060049815
    Abstract: In a voltage regulator including an error amplifier to generate a first signal related to an output voltage of the voltage regulator, a current sense circuit to generate a second signal related to an inductor current of the voltage regulator, and a PWM comparator to generate a PWM signal in response to the first and second signals to regulate the output voltage, a current feed-through adaptive voltage position control comprises supplying ramp signal and offset signal to modify the PWM signal to thereby elliminate the offset of the output voltage.
    Type: Application
    Filed: September 8, 2005
    Publication date: March 9, 2006
    Inventors: Hsin-Hsin Ho, Liang-Pin Tai, Hung-I Wang, Jian-Rong Huang, Jiun-Chiang Chen
  • Publication number: 20060012346
    Abstract: An overshoot suppression circuit comprises a switch for coupling to an output of a voltage regulation module and a voltage detector for detecting an output voltage at the output. When the load to the voltage regulation module changes from heavy to light to result in the output voltage higher than a threshold, the voltage detector turns on the switch to release energy from the output, and thereby the output voltage is suppressed to produce overshoot to damage the load coupled to the output.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 19, 2006
    Inventors: Jian-Rong Huang, Liang-Pin Tai, Peng-Ju Lan
  • Patent number: 6969980
    Abstract: A pulse width modulator includes an amplifier module, a comparator module, and a filter module. The amplifier module receives a feedback voltage signal from a passive network, and generates first and second non-inverted voltage signals and first and second inverted voltage signals in response to the feedback voltage signal. The comparator module receives the first and second non-inverted voltage signals and the first and second inverted voltage signals, and provides first and second differential voltage signals corresponding to the first and second non-inverted voltage signals and the first and second inverted voltage signals. The filter module is coupled between the amplifier module and the comparator module, and is operable so as to attenuate high frequency components of the first and second non-inverted voltage signals. As such, the presence of noise in the feedback voltage signal does not affect differential operation of the comparator module.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: November 29, 2005
    Assignee: Richtek Technology Corp.
    Inventors: Liang-Pin Tai, Kent Hwang, Jian-Rong Huang, Kuo-Ping Liu, Cheng-Hsuan Fan, Ko-Cheng Wang, Yu-Fan Liao
  • Publication number: 20050258813
    Abstract: A pulse width modulator includes an amplifier module, a comparator module, and a filter module. The amplifier module receives a feedback voltage signal from a passive network, and generates first and second non-inverted voltage signals and first and second inverted voltage signals in response to the feedback voltage signal. The comparator module receives the first and second non-inverted voltage signals and the first and second inverted voltage signals, and provides first and second differential voltage signals corresponding to the first and second non-inverted voltage signals and the first and second inverted voltage signals. The filter module is coupled between the amplifier module and the comparator module, and is operable so as to attenuate high frequency components of the first and second non-inverted voltage signals. As such, the presence of noise in the feedback voltage signal does not affect differential operation of the comparator module.
    Type: Application
    Filed: May 21, 2004
    Publication date: November 24, 2005
    Inventors: Liang-Pin Tai, Kent Hwang, Jian-Rong Huang, Kuo-Ping Liu, Cheng-Hsuan Fan, Ko-Cheng Wang, Yu-Fan Liao
  • Patent number: 6946823
    Abstract: A delta-sigma DC-to-DC converter comprises a pair of high-side and low-side switches switched to convert an input voltage to an output voltage, a sense circuit to sense the output voltage of the converter to generate a feedback signal, a transconductive amplifier to amplify a difference between the feedback signal and a threshold signal to generate a differential current, a charging circuit connected with the differential current to generate a charging voltage, and a driver to compare the charging voltage with two reference signals to generate the pair of low-side and high-side driving signals.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: September 20, 2005
    Assignee: Richtek Technology Corp.
    Inventors: Kent Huang, Liang-Pin Tai, Hung-I Wang, Jian-Rong Huang, Kuo-Ping Liu, Yu-Fan Liao
  • Publication number: 20050195823
    Abstract: A packet-based data network comprises: a packet-based network switch; a plurality of packetised data sources coupled to the network, the packetised data comprising at least one of audio data or video data; at least one destination, being a data handling device for handling data from the packetised data sources, coupled to the network; and a network control arrangement coupled to the network, the network control arrangement being arranged to provide virtual circuit-switched connections for transfer of packetised data from sources to destinations via the network switch by: a) assigning multicast group identifiers to the sources, so that the sources launch packetised data onto the network as multicast data packets identified by the multicast group identifiers; and b) instructing a destination to issue a request to the network switch to join the multicast group of a source so as to receive data packets from that source.
    Type: Application
    Filed: January 16, 2004
    Publication date: September 8, 2005
    Inventors: Jian-Rong Chen, Daniel Wilson
  • Patent number: 6927960
    Abstract: A circuit protection device includes an overheat protecting circuit connected to a main circuit and capable of being activated so as to shut down the main circuit when operating temperature of the main circuit reaches a predetermined value, and a current limiting circuit connected to the main circuit for preventing current through the main circuit from exceeding a predetermined threshold value. The current limiting circuit is further connected to the overheat protecting circuit and controls activation of the overheat protecting circuit when the current through the main circuit reaches the predetermined threshold value. Therefore, erroneous operation of the circuit protection device due to a shift in component characteristics of the overheat protecting circuit attributed to limitations in fabrication can be avoided.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: August 9, 2005
    Assignee: Richtek Technology Corp.
    Inventors: Jian-Rong Huang, Liang-Pin Tai, Jing-Meng Liu
  • Publication number: 20050153473
    Abstract: A method for forming a modified semiconductor having a number of band gaps involves providing a semiconductor having a surface and a quantum region which emits photons in response to electrical or optical stimulation, the quantum region having an original band gap and being disposed under the surface and applying a number of layers of a number of materials to a number of selected regions of the surface, the materials being adapted to cause, upon thermal annealing, a number of different degrees of intermixing in a number of portions of the quantum region disposed immediately below each of the selected regions of the surface. The layers of materials can be applied in a dot or line pattern, or both, to increase the plurality of band gap tuning. The method includes thermally annealing the layers to the surface.
    Type: Application
    Filed: April 4, 2003
    Publication date: July 14, 2005
    Inventors: Jing Hua Teng, Soo Jin Chua, Jian Rong Dong
  • Publication number: 20050092424
    Abstract: Methods for manufacturing a composite rubber tire with a polyurethane tread comprise: treating an outer surface of an internal rubber body; preparing a polyurethane pre-polymer; improving the polyurethane pre-polymer; and applying the polyurethane pre-polymer to the treated outer surface of the internal rubber body to mold a polyurethane tread. Thereby, the composite rubber tire with the polyurethane tread is achieved and has excellent characteristics such as low rolling resistance, low oil consumption, excellent durability and low environmental contamination. Additionally, the methods constitute simple manufacturing processes that reduce manufacturing costs of the composite rubber tire with the polyurethane tread.
    Type: Application
    Filed: June 23, 2004
    Publication date: May 5, 2005
    Inventors: Hai Zhang, Tie-Jun Ma, Yan-Ping Ye, Yu-Hua Yi, Jian-Rong Shen, Jun Li
  • Publication number: 20050017767
    Abstract: In a noise sensitivity improved switching system and method thereof, comprised sensing the output voltage of the switching system to generate a feedback signal, respectively amplifying the feedback signal by two gains to generate two signals in phase or out of phase, filtering one of the two amplified signals, and summing or comparing the filtered signal and the other one, thereby reducing the noise interference to the switching system.
    Type: Application
    Filed: July 2, 2004
    Publication date: January 27, 2005
    Inventors: Jian-Rong Huang, Kuo-Ping Liu, Kent Huang, Liang-Pin Tai
  • Publication number: 20040257056
    Abstract: A switching regulator with improved load transient efficiency comprises an output stage to generate an output voltage, a pulse width modulation circuit to generate a pulse width modulation signal, a constant ON-time circuit to generate an ON-time signal in accordance with the pulse width modulation signal to drive the output stage, and a masking apparatus to mask the ON-time signal by the pulse width modulation signal to thereby drive the output stage during load transient. During load transient, the masking apparatus reduces the switching times of the output stage to thereby reduce the switching loss and thus improve the efficiency of the regulator.
    Type: Application
    Filed: May 7, 2004
    Publication date: December 23, 2004
    Inventors: Jian-Rong Huang, Liang-Pin Tai, Kent Huang, Hung-I Wang, Cheng-Hsuan Fan
  • Publication number: 20040255329
    Abstract: A network interface device connectable to a network, the device being arranged to receive a digital video data stream of a first resolution and, substantially in real time, to launch data packets representing the digital video data stream onto the network, comprises:
    Type: Application
    Filed: March 30, 2004
    Publication date: December 16, 2004
    Inventors: Matthew Compton, Jian-Rong Chen, Daniel Wilson
  • Publication number: 20040232900
    Abstract: A DC-to-DC converter comprises a sense circuit to sense the output voltage of the converter to generate a feedback signal, a transconductive amplifier to amplify a difference between the feedback signal and a threshold signal to generate a first current and to generate a second current in response to a load transient, a charging circuit connected with the first current to generate a charging voltage, a driver to compare the charging voltage with two reference signals to generate a pair of low-side and high-side driving signals, and a fast response circuit to compare a load transient signal corresponding to the second current with a third reference signal to generate a bypass signal to drive the output stage of the converter in the load transient.
    Type: Application
    Filed: May 17, 2004
    Publication date: November 25, 2004
    Inventors: Kent Huang, Liang-Pin Tai, Hung-I Wang, Jian-Rong Huang, Kuo-Ping Liu, Yu-Fan Liao
  • Publication number: 20040232901
    Abstract: A delta-sigma DC-to-DC converter comprises a pair of high-side and low-side switches switched to convert an input voltage to an output voltage, a sense circuit to sense the output voltage of the converter to generate a feedback signal, a transconductive amplifier to amplify a difference between the feedback signal and a threshold signal to generate a differential current, a charging circuit connected with the differential current to generate a charging voltage, and a driver to compare the charging voltage with two reference signals to generate the pair of low-side and high-side driving signals.
    Type: Application
    Filed: May 17, 2004
    Publication date: November 25, 2004
    Inventors: Kent Huang, Liang-Pin Tai, Hung-I Wang, Jian-Rong Huang, Kuo-Ping Liu, Yu-Fan Liao
  • Publication number: 20040135564
    Abstract: A switching mode voltage regulator comprises a pulse width modulator and an adjustable one-shot circuit to generate an adjustable signal based on an input voltage, an adjustable voltage, and a PWM signal from the pulse width modulator at light loading to switch a high-side switch of an output stage in the voltage regulator. The ON duty of the adjustable signal is controlled by the adjustable voltage, such that it will be larger than that of the PWM signal and as a result, the number of switching the switch of the output stage is decreased, thereby reducing the switching loss and improving the efficiency of the voltage regulator.
    Type: Application
    Filed: December 24, 2003
    Publication date: July 15, 2004
    Inventors: Jian-Rong Huang, Liang-Pin Tai, Hung-I Wang, Chung-Lung Pai, Jing-Mong Liu