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Han Li

Han Li, Shanghai CN

Patent application numberDescriptionPublished
20110032683POWER MODULE AND CIRCUIT BOARD ASSEMBLY THEREOF - A power module includes a first bobbin, a primary winding coil, a circuit board assembly and a first magnetic core assembly. The primary winding coil is wound around the first bobbin. The circuit board assembly includes a printed circuit board, a second winding structure, at least one current-sensing element, a rectifier circuit and an electrical connector. The second winding structure has an output terminal. The current-sensing element includes a first conductor. The first conductor is a conductive sheet. A first end of the first conductor is in contact with the output terminal of the second winding structure. A second end of the first conductor is connected to the rectifier circuit. The primary winding coil is aligned with the second winding structure of the circuit board assembly and arranged within the first magnetic core assembly. The primary winding coil and the electrical connector are electrically connected with a system board.02-10-2011
20110038182POWER CONVERTER HAVING SYNCHRONOUS RECTIFIER AND CONTROL METHOD OF SYNCHRONOUS RECTIFIER - Disclosed is a power converter including a switching circuit; a transformer having a primary winding connected to the switching circuit and a secondary winding; a main control circuit connected to the switching circuit for outputting a main control signal to manipulate the switching circuit; at least one synchronous rectifier connected to the secondary winding; at least one current transformer connected to the synchronous rectifier for outputting a detecting signal according to a current flowing through the synchronous rectifier; and at least one synchronous rectification control circuit connected to a control terminal of the synchronous rectifier, the current transformer, and a control terminal of the switching circuit for receiving the detecting signal and the main control signal for manipulating the synchronous rectifier. In case that the main control circuit manipulates the switching circuit to turn on, the synchronous rectification control circuit manipulates the synchronous rectifier to turn on, and thereby allowing the synchronous rectification control circuit to manipulate the synchronous rectifier to turn off according to the detecting signal.02-17-2011
20110156643HIGH-VOLTAGE BATTERY CHARGING SYSTEM FOR USE IN ELECTRIC VEHICLE - A high-voltage battery charging system is installed in a vehicle body of the electric vehicle for charging a high-voltage battery unit within the vehicle body. The high-voltage battery charging system includes a rectifier circuit, a power factor correction circuit and a non-isolated DC-DC converting circuit. The rectifier circuit is connected to a common terminal for rectifying an AC input voltage into a rectified voltage. The power factor correction circuit is connected to the rectifier circuit and a bus for increasing a power factor and generating a bus voltage. The non-isolated DC-DC converting circuit is connected to the power factor correction circuit and the high-voltage battery unit for charging the high-voltage battery unit, wherein no transformer is included in the non-isolated DC-DC converting circuit.06-30-2011

Han Li, Beijing CN

Patent application numberDescriptionPublished
20090148168Optical Fiber Access Network and Commuication Protection Method Thereof - The present invention relates to an optical fiber access network and a communication protection method thereof. The optical fiber access network comprises an optical fiber communication system, a wireless communication system, a communication service switch device (06-11-2009
20090237512CAMERA SYSTEM AND ITS CONTROL METHOD - A camera system according to an embodiment includes a camera device, a control device, and an application server. The camera device, which includes a camera module and a power line communication (PLC) camera adaptation module, captures and provides audio/video information. The camera device modulates the audio/video information, and provides the modulated information. The camera device also demodulates the modulated signal transferred from a power line to obtain a control signal, and adjusts camera parameters according to the control signal. The control device connected to the PLC camera adaptation module via the power line. The control device demodulates a received modulated signal of the audio/video information, and provides the demodulated signal. According to a received control indication information, the control device generates a control signal, modulates the control signal, and controls the camera module. The application server stores and provides the audio/video information, camera device information and controlling purview information of the camera device. The application server also generates and provides the control indication information. A method for controlling camera is also disclosed. Embodiments of the present invention can control the camera device remotely without using a dedicated signal line.09-24-2009
20100008370HOME GATEWAY DEVICE - The present invention relates to a home gateway device. The home gateway device comprises a main processor to generate information process signals and control signals, a computer bus signal Ethernet adapter unit connected to the main processor to translate the signals between computer bus signals and Ethernet signals, an Ethernet frame process unit connected to the computer bus signal Ethernet adapter unit to forward the received Ethernet frame based on a prearranged policy, an inner interface unit connected to the Ethernet frame process unit to connect interior networking devices, and an outer communication module connected to the main processor and the Ethernet frame process unit. The centralized control of the home gateway device of the present invention can decrease the requirement that the household appliances should be intellectualized, thereby achieving more flexible control and reducing the cost. The uplink and downlink Ethernet signals are controlled by using the prearranged policy to separate the Ethernet signals for Internet access from the Ethernet signals of the household information appliances, and avoid the threat due to the unsafe factors.01-14-2010
20100106860APPARATUS, SYSTEM FOR PROCESSING INTERNETWORK COMMUNICATION AND COMMUNICATION CONNECTION-ADAPTATION METHOD - The invention relates to a network communication processing apparatus including: a communication connection selection and configuration unit and an internal interface unit connected in sequence. The invention relates to a network communication processing system including: a network communication processing apparatus, an external communication module and multiple network devices connected to the network communication processing apparatus. The present invention also relates to a method for communication connection adaptation comprising: identifying, by a network communication processing apparatus, available communication connection modes of a network device when it is connected; configuring the network device into a communication connection mode based on the available communication connection modes; and when the connection mode is changed, selecting, by the network communication processing apparatus, another connection mode and configures the network device into the another connection mode.04-29-2010
20100172362HOUSEHOLD GATEWAY SUBSYSTEM AND DIGITAL HOUSEHOLD SYSTEM BASED ON BUS - A household gateway subsystem, the subsystem comprises: a host device, for connecting an external network with the interior of the household, and controlling various information appliances in the household based on a digital bus; a user operating device, for communicating with the host device via a digital bus interface, and providing various user operating interfaces and control units. A digital household system is also provided, the system comprises: a household gateway subsystem, connected with an external communicating network by IP access; the household gateway subsystem comprises: a host device; a user operating device, for communicating with the host device via a digital bus interface; a number of wireless signal transceivers, connected with the host device of the household gateway subsystem.07-08-2010

Han Li, Cambridge, MA US

Patent application numberDescriptionPublished
20100024534METHOD TO MEASURE THE ELASTIC MODULUS AND HARDNESS OF THIN FILM ON SUBSTRATE BY NANOINDENTATION - A method of measuring the elastic modulus and hardness of a thin film on substrate using nanoindentation technique is provided. The method includes calculating a series of experimental corrected stiffness and contact radius pairs associated with one or more presumed parameters and information obtained from a loading curve associated with the thin film and substrate. Also, the method includes calculating a series of theoretical corrected stiffness and contact radius pairs associated with the same one or more presumed parameters and information obtained from the loading curve associated with the thin film and substrate. Furthermore, the method includes using results obtained from the experimental and theoretical corrected stiffness and contact radius pairs to compute the elastic modulus and hardness of the film material.02-04-2010