1
Peng Xu, Kaiwei Yao, Fred C Lee, Mao Ye, Jia Wei: Multiphase clamp coupled-buck converter and magnetic integration. Virginia Tech Intellectual Properties, Whitham Curtis & Christofferson P C, August 31, 2004: US06784644 (97 worldwide citation)

Voltage regulation, transient response and efficiency of a voltage regulator module (VRM) is improved where short duty cycles are necessitated by large differentials of input and output voltage by including at least one clamping of a tap of an inductance in series with an output of each of a plurali ...


2
Peng Xu, Bertrand Johan Edward Hontele, Jean Pierre Kuppen: Supply assembly for a led lighting module. Koninklijke Philips Electronics, Edward W Goodman, July 4, 2006: US07071762 (87 worldwide citation)

A supply assembly for an LED lighting module includes a control switch for supplying a constant current to the LED lighting module. A dual switching signal composed of low frequency bursts of high frequency pulses is applied to the control switch. By varying the low frequency component of the dual s ...


3
Peng Xu: Switching regulator with automatic multi mode conversion. Monolithic Power Systems, Perkins Coie, May 17, 2011: US07944191 (56 worldwide citation)

Methods and apparatus are disclosed for efficient switching regulators that adapt automatically to, and operate with, input voltages that are above, below, or equal to the output voltage. The disclosed switching regulators demonstrate advantages of both buck and boost converters at high efficiency.


4
Peng Xu: Current control method and circuit for light emitting diodes. Koninklijke Philips Electronics, March 31, 2009: US07511436 (52 worldwide citation)

A flow of a LED current (ILED2) through one or more LEDs is controlled by a LED current control circuit (50-54) implementing a method (30) that is independent of an input line and a load of the LED(s).


5
Hao peng Xu Duffy: Identification of differentially methylated and mutated nucleic acids. North Shore University Hospital Research, Kenyon & Kenyon, February 16, 1999: US05871917 (43 worldwide citation)

The present invention provides Methyl- (or Mutant-) Differential Display (MDD) methods and nucleic acid probes for detecting mutations and the methylation patterns of nucleic acids. The methods of the present invention are particularly useful for detecting and isolating genomic DNA fragments which a ...


6
Ajay Divakaran, Anthony Vetro, Huifang Sun, Peng Xu, Shih Fu Chang: Extraction of high-level features from low-level features of multimedia content. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Andrew J Curtin, July 13, 2004: US06763069 (33 worldwide citation)

A method extracts high-level features from a video including a sequence of frames. Low-level features are extracted from each frame of the video. Each frame of the video is labeled according to the extracted low-level features to generate sequences of labels. Each sequence of labels is associated wi ...


7
Peng Xu: Single driver for multiple light emitting diodes. Koninklijke Philips Electronics, March 22, 2011: US07911151 (24 worldwide citation)

A LED driver circuit (70, 80) employs a power source (IS, VS) for providing power at a power conversion frequency to a switching LED cell (30-32, 40-42). The switching LED cell (30-32, 40-42) switches between a radiating mode and a disabled mode at a LED driving frequency. In the radiating mode, the ...


8
Hao Peng Xu Duffy: Identificiaton of differentially methylated and mutated nucleic acids. North Shore Long Island Jewish Research Institute, Kenyon & Kenyon, September 9, 2003: US06617434 (17 worldwide citation)

The present invention provides Methyl- (or Mutant-) Differential Display (MDD) methods and nucleic acid probes for detecting mutations and the methylation patterns of nucleic acids. Regions of the genome are differentially methylated or mutated in different cell types, including cancerous cell types ...


9
Hao Peng Xu Duffy: Nucleic acids that encode testes specific protease and detect DNA hypomethylated in cancer cells. North Shore Long Island Jewish Research Institute, Kenyon & Kenyon, September 17, 2002: US06451555 (16 worldwide citation)

The present invention provides Methyl- (or Mutant-) Differential Display (MDD) methods and nucleic acid probes for detecting mutations and the methylation patterns of nucleic acids. The methods of the present invention are particularly useful for detecting and isolating genomic DNA fragments which a ...


10
Shi Feng Wang, Ji Peng Xu, Tsai Kuei Cheng: Case of server. Inventec Corporation, J C Patents, May 17, 2011: US07944700 (12 worldwide citation)

A case of server includes a chassis, a first top cover, a second top cover, at least a first tray, at least a second tray, an input/output interface circuit board, a mother board, and a third top cover. The first and the second top covers are fixed at two sides of the chassis, where an opening is fo ...