Jian Wen
Jian Wen Chen, Hsinchu City TW
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20090160503 | TRIANGLE WAVE GENERATOR AND SPREAD SPECTRUM CONTROL CIRCUIT THEREOF - A triangle wave generator with function of spreading frequency spectrum is provided. The triangle wave generator includes a switch control circuit, a current generator, an integrator, and a spread spectrum control circuit. The switch control circuit provides an internal clock and a switch control signal. The current generator is coupled to the switch control circuit and provides charge current according to the switch control signal. The integrator is coupled to the current generator and provides a triangle wave signal. The spread spectrum control circuit is coupled to the switch control circuit and the current generator for providing a current control signal according to the internal clock. | 06-25-2009 |
20100315143 | CIRCUIT AND METHOD FOR REDUCING POPPING SOUND - A circuit for reducing popping sound comprises a waveform generator, a voltage accumulator, and a comparator. The waveform generator is configured for generating a periodic waveform, and the voltage accumulator is configured for generating an increased voltage. The comparator is configured for comparing the periodic waveform with the increased voltage for generating a successive pulse signal. A percentage of a duty cycle in the successive pulse signal is increased gradually. | 12-16-2010 |
20110279158 | SLEW RATE CONTROL CIRCUIT AND METHOD THEREOF AND SLEW RATE CONTROL DEVICE - A slew rate control circuit is provided. The slew rate control circuit includes at least one switch and an inverter. A first end of the switch is coupled to a power terminal. A toggle end of the switch is coupled to a first control terminal. A second end of the switch is coupled to an output terminal. An output end of the inverter is coupled to the output terminal. An input end of the inverter is coupled to an input terminal. A voltage at the first control terminal conducts the switch to reduce the slew rate when a large voltage variation occurs at the output terminal. A method of controlling a slew rate and a slew rate control device are provided. | 11-17-2011 |
Jian Wen Chen, Beijing CN
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20090296636 | TRANSCEIVING APPARATUS AND DATA PROCESSING SYSTEM FOR COMMUNICATION BASE STATIONS - A base station apparatus adaptive for antenna arrays including at least one radio frequency (RF) header module, at least one data processing apparatus, and transceiving apparatus for transceiving data between the at least one radio frequency (RF) header module and the at least one data processing apparatus. The transceiving apparatus includes an uplink module to group data received by the RF header module according to grouping configuration information, and to transfer the grouped data to the data processing apparatus; and a downlink module to degroup the data from the data processing apparatus according to the grouping configuration information, and to transfer the degrouped data to the RF header module. Also provided are methods of receiving and sending data, and a computer readable article of manufacture tangibly embodying computer readable instructions for executing a computer implemented method of sending and receiving data for a base station. | 12-03-2009 |
20110075593 | WIRELESS COMMUNICATION TRANSCEIVER AND MODE-SWITCH DEVICE THEREOF - A wireless communication transceiver and a mode switch device thereof. The transceiver includes: a first band transmission path; a first band reception path; a second band transmission path; a second band reception path; a path switch and a control unit. In a dual band time division duplexing mode, the control unit controls the path switch so that the path switch connects a received radio frequency signal from an antenna to the first band reception path, and connects a transmitted radio frequency signal from the second band transmission path to the antenna in an odd cycle or an even cycle; and controls the path switch so that the path switch connects a received radio frequency signal from the antenna to the second band reception path, and connects a transmitted radio frequency signal from the first band transmission path to the antenna in another odd cycle or another even cycle. | 03-31-2011 |
20120134449 | SOFTWARE RADIO SYSTEM, DECODING APPARATUS AND METHOD THEREOF - The present invention relates to a software radio system and a decoding apparatus and method thereof. According to an embodiment of the present invention, there is provided a forward error correction decoding apparatus for a software radio system, including: a receiving module for receiving decoding tasks from a plurality of uplink channels; and a decoder matrix for executing the decoding tasks, wherein the decoder matrix is shared by the plurality of uplink channels. The decoding apparatus and method as well as the software radio system according to the embodiments of the present invention can be well adapted to the high computing capabilities, sufficient flexibility and scalability as required by base station systems for next-generation wireless communication systems. | 05-31-2012 |
20120140711 | TRANSCEIVING APPARATUS AND DATA PROCESSING SYSTEM FOR COMMUNICATION BASE STATIONS - A base station apparatus, methods of receiving and sending data, and a computer readable article of manufacture. A computer implemented method includes the following for receiving and sending data: receiving the data by an RF header module; grouping data received; transferring the grouped data to a data processing apparatus; distributing the grouped data into an uplink sub-channel; merging the distributed data using at least one downlink sub-channel; transferring the merged data to a transceiving apparatus; degrouping the merged data; and sending the merged data by RF header module. A method of receiving data, a method of sending data, and computer readable non-transitory articles of manufacture are also provided. | 06-07-2012 |
Jian Wen Zhang, Shenzhen CN
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20090091211 | ELECTRIC MOTOR - A small size permanent magnet direct current motor has a housing accommodating a permanent magnet stator and a wound rotor. The rotor has a rotor core with a diameter of 23 mm±3 mm and 12 poles and a cylindrical commutator. The motor has an output power of more than 25 watts. | 04-09-2009 |
20110203073 | BRUSH ROLL OF A VACUUM CLEANER - A vacuum cleaner has a brush roll which has a housing. A motor is disposed within the housing and has a pulley mounted on a shaft of the motor. A roller is disposed within the housing and has a drive wheel. A belt couples the pulley to the drive wheel, so that the motor can drive the roller. The roller has bristles for sweeping a surface to be cleaned. | 08-25-2011 |
Jian-Wen Chen, Yongjing Township TW
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20100111860 | Radioactive material containing chitosan for inhibiting cancer and preparation method thereof - A radioactive material containing chitosan for inhibiting cancer and a preparation method thereof are revealed. The adioactive material containing chitosan is formed by using SOCTA chelating agent to connect chitosan and radionuclides such as | 05-06-2010 |
Jian-Wen Deng, Yangjiang City CN
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20140183832 | COLLAPSIBLE PLATFORM TRUCK - A foldable platform truck includes a platform, two wheel-connecting bars rotatably attached to the platform, a handle assembly, a handle release and locking mechanism for controlling the handle assembly, a pair of first gear members and a pair of second gear members. The handle release and locking mechanism has an actuator to be operated to allow the handle assembly to pivot between an upright position and a horizontal position. When the handle assembly is in the horizontal position, the wheels are folded up underneath the platform and lie horizontally with respect thereto. And, when the handle assembly is pulled away from the platform to the upright position, the first gear members engage and turn the second gear members, resulting in the wheel-connecting bars rotating to fold out the wheels from underneath the platform toward an eventual perpendicular position with respect to the underside of the platform. | 07-03-2014 |
20150203136 | FOLDABLE LUGGAGE CARRIER - A foldable luggage carrier includes a frame, a supporting tray and a pair of wheeled carriages. The tray has a pair of pivot brackets pivotally connected to two leg portions of the frame such that the tray is pivotable between a forwardly extended position and a fold-up position. Each of the pivot brackets includes a pair of opposed plates and a cam portion at a corner. Each of the wheeled carriages includes a wheel bracket having a sleeve bearing rotatably supported on the leg portions of the frame to permit the wheeled carriages to pivot between rearwardly extended positions and folded-in positions. The sleeve bearing has a guiding slope section at a bottom to interact with each cam portion of the pivot bracket in a manner such that the wheeled carriages automatically pivot to the folded-in positions and the rearwardly extended positions when the tray is moved between the fold-up position and the forwardly extended position. | 07-23-2015 |
Jian-Wen Gao, Shenzhen CN
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20150268675 | TEMPERATURE DIFFERENCE COMPENSATION SYSTEM AND METHOD THEREOF - A temperature difference compensation system includes a rotary table configured to support a fixture, a hot air jet, an infrared thermometer, and a programmable logic controller electrically coupled to the hot air jet and the infrared thermometer. The hot air jet, the infrared thermometer, and the programmable logic controller are spaced from each other and positioned above the rotary table. The infrared thermometer is configured to measure a temperature of the fixture and transfer a value corresponding to the measured temperature to the programmable logic controller. The programmable logic controller is configured to control the hot air jet to heat the fixture according to the temperature measured by the infrared thermometer. | 09-24-2015 |
Jian-Wen Huang, Taipei TW
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20140315273 | BETA-MANNANASE HAVING IMPROVED ENZYMATIC ACTIVITY - A β-mannanase having increased enzymaic activity is disclosed. The β-mannanase has a modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of Tyrosine at position 216 with Tryptophan. | 10-23-2014 |
20150031110 | PHYTASE HAVING IMPROVED ENZYMATIC ACTIVITY - A phytase having improved enzymaic activity is disclosed. The phytase has a modified amino acid sequence of SEQ ID NO: 2, wherein the modification is a substitution of Valine at position 90 with Threonine. Alternatively, the phytase has a modified amino acid sequence of SEQ ID NO: 6, wherein the modification is a substitution of Asparagine at position 204 with Alanine or a substitution of Serine at position 206 with Alanine. | 01-29-2015 |
Jian-Wen Lin, Luzhu Township TW
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20130100394 | LIQUID CRYSTAL COMPOUND, AND LIQUID CRYSTAL DISPLAY - An embodiment of the invention provides a liquid crystal compound having the following formula: | 04-25-2013 |
20130235320 | LIQUID CRYSTAL COMPOUND AND LIQUID CRYSTAL DISPLAY - An embodiment of the disclosure provides a liquid crystal compound having the following formula: | 09-12-2013 |
20140118679 | Liquid-crystal compound with negative dielectric anisotropy, liquid-crystal display, and optoelectronic device - Disclosed is a liquid-crystal compound with negative dielectric anisotropy, having the chemical formula: | 05-01-2014 |
20150124210 | LIQUID CRYSTAL COMPOUND WITH NEGATIVE DIELECTRIC ANISOTROPY, LIQUID CRYSTAL DISPLAY, AND OPTOELECTRONIC DEVICE - Disclosed is a liquid crystal compound with negative dielectric anisotropy, having a general formula as Formula 1. | 05-07-2015 |
Jian-Wen Lin, Taoyuan County TW
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20120165528 | CHIRAL BINAPHTHYL COMPOUNDS - The present invention relates to chiral binaphthyl compounds having good solubility and high helical twisting power. The chiral binaphthyl compounds as dopants in the liquid crystal compositions can help enhance the display quality of the liquid crystal panels. | 06-28-2012 |