Patents by Inventor Wei-Hsuan Chang

Wei-Hsuan Chang 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).

  • Patent number: 10312870
    Abstract: A method for processing wireless signals and a wireless device are disclosed. The method for processing wireless signals is applied to the wireless device that includes an amplifier circuit amplifying wireless signals according to a base gain. The method for processing wireless signals includes steps of: setting the base gain as a first gain value in a first operation period; performing multiple packet detections in the first operation period and counting a total number of false alarms; determining a second gain value according to the total number of false alarms; and setting the base gain as a second gain value in a second operation period that is later than the first operation period.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: June 4, 2019
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Shen-Chung Lee, Wei-Hsuan Chang, Chifang Chang, Chenpeng Wen
  • Publication number: 20180324709
    Abstract: The present invention discloses a gain adjustment method for wireless communication. This method is carried out by a wireless transceiver, and an embodiment of the method comprises the following steps: obtaining at least one transceiving parameter of a wireless connection partner; determining an adaptive power gain according to the at least one transceiving parameter; having an idle power gain of a radio-frequency circuit of the wireless transceiver be the adaptive power gain for a period of time, or having the idle power gain of the radio-frequency circuit be the adaptive power gain until packet transmission operation or packet reception operation takes place within the period of time; and if none of the packet transmission operation and the packet reception operation takes place within the period of time, having the idle power gain of the radio-frequency circuit be an initial power gain right after the period of time.
    Type: Application
    Filed: April 2, 2018
    Publication date: November 8, 2018
    Inventors: WEI-HSUAN CHANG, SHEN-CHUNG LEE, CHI-FANG CHANG, YU-NAN LIN
  • Publication number: 20180241361
    Abstract: A method for processing wireless signals and a wireless device are disclosed. The method for processing wireless signals is applied to the wireless device that includes an amplifier circuit amplifying wireless signals according to a base gain. The method for processing wireless signals includes steps of: setting the base gain as a first gain value in a first operation period; performing multiple packet detections in the first operation period and counting a total number of false alarms; determining a second gain value according to the total number of false alarms; and setting the base gain as a second gain value in a second operation period that is later than the first operation period.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 23, 2018
    Inventors: Shen-Chung Lee, Wei-Hsuan Chang, Chifang Chang, Chenpeng Wen
  • Patent number: 9855412
    Abstract: A needleless connector module comprises: a sleeve tube, an elastic valve, a flow guiding unit and an extension unit. The elastic valve sleeves a guiding tube of the flow guiding unit. A hollow shoulder portion of the elastic valve abuts a slanted retaining wall of the sleeve tube. Under a first usage condition, the hollow head portion of the elastic valve encloses the guiding tube narrow portion, hiding the first guiding opening in the airtight seam. Under a second usage condition, an injection tube presses the top face of the elastic valve, a hollow head portion of the elastic valve presses downward, driving the valve inner wall to abut a waist platform formed on the guiding tube, such that the first guiding opening is exposed outside the airtight seam, and such that the first guiding opening is connected to an injection opening of the injection tube.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: January 2, 2018
    Assignee: LILY MEDICAL CORPORATION
    Inventors: Chih-Lung Chen, Wei Hsuan Chang, Chih-Wei Chiu
  • Publication number: 20170272980
    Abstract: This invention discloses a method for controlling a wireless communication device to transmit data packets. The method includes steps of: transmitting data packets; counting retry times of data packets in a predetermined time period and generating a result accordingly; comparing said result with a predetermined value and generating a comparison result accordingly; and reducing transmission time of data packets according to said comparison result.
    Type: Application
    Filed: June 7, 2017
    Publication date: September 21, 2017
    Inventors: YU-NAN LIN, WEI-CHI LAI, SHEN-CHUNG LEE, CHUNG-YAO CHANG, WEI-HSUAN CHANG
  • Patent number: 9713037
    Abstract: This invention discloses a wireless communication device and a method of determining a target set of transmission rates of the wireless communication device. The wireless communication device transmits data packets according to a plurality of transmission rates included in the target set of transmission rates. The method includes steps of: providing a plurality of candidate sets of transmission rates; transmitting a plurality of data packets according to a primary set of transmission rates; counting retry times of the data packets in a predetermined period of time and generating a counting result; and selecting one of the candidate sets of transmission rates according to the counting result to be the target set of transmission rates.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: July 18, 2017
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Wei-Hsuan Chang, Chung-Yao Chang
  • Patent number: 9663611
    Abstract: A conjugated polymer for electronic devices can include a repeated unit having the structure of formula (I)
    Type: Grant
    Filed: July 23, 2014
    Date of Patent: May 30, 2017
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Yang Yang, Letian Dou, Wei-Hsuan Chang
  • Patent number: 9508813
    Abstract: The present invention provides a transistor comprising a substrate having a surface; a first deep well region in the substrate; a second deep well region in the substrate, isolated from and encircling the first deep well region; a first well region in the substrate and on the first deep well region; two second well regions in the second deep well region and respectively at two opposite sides of the first well region; a source region in the first well region and adjacent to the surface; two drain regions in the two second well regions respectively and adjacent to the surface; two gate structures on the surface, wherein each of the two gate structures is between the source region and one of the drain regions respectively; and a guard ring in the substrate encircling the second deep well region, and on the periphery of the transistor.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: November 29, 2016
    Assignee: UNITED MICROELECTRONICS CORPORATION
    Inventors: Yen-Ming Chen, Chiuling Lee, Min-Hsuan Tsai, Zheng Hong Chen, Wei Hsuan Chang, Tseng-Hsun Liu
  • Publication number: 20160329408
    Abstract: The present invention provides a transistor comprising a substrate having a surface; a first deep well region in the substrate; a second deep well region in the substrate, isolated from and encircling the first deep well region; a first well region in the substrate and on the first deep well region; two second well regions in the second deep well region and respectively at two opposite sides of the first well region; a source region in the first well region and adjacent to the surface; two drain regions in the two second well regions respectively and adjacent to the surface; two gate structures on the surface, wherein each of the two gate structures is between the source region and one of the drain regions respectively; and a guard ring in the substrate encircling the second deep well region, and on the periphery of the transistor.
    Type: Application
    Filed: May 7, 2015
    Publication date: November 10, 2016
    Inventors: YEN-MING CHEN, CHIULING LEE, MIN-HSUAN TSAI, ZHENG HONG CHEN, WEI HSUAN CHANG, TSENG-HSUN LIU
  • Patent number: 9473962
    Abstract: The present invention discloses a wireless transmission rate adjustment method for adjusting the wireless transmission rate of a wireless transmission device.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: October 18, 2016
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chien-Wei Hsin, Wei-Hsuan Chang, Chung-Yao Chang
  • Publication number: 20160152419
    Abstract: A delivery method for placing a plurality of objects at a plurality of predetermined positions of a loading component includes the following steps. A plurality of placement regions are defined, the plurality of objects are placed at the plurality of placement regions respectively, the quantity of the plurality of placement regions is equal to the quantity of the plurality of predetermined positions of the loading component, and the plurality of placement regions are corresponding to the plurality of predetermined positions one-by-one. Each object is picked up from each placement region, and placed at each predetermined position corresponding to each placement region.
    Type: Application
    Filed: April 2, 2015
    Publication date: June 2, 2016
    Inventors: CHIH-CHIEN LIN, WEI-HSUAN CHANG
  • Patent number: 9253759
    Abstract: A channel selection method includes steps of generating a plurality of test carriers on a plurality of different candidate channels, respectively; obtaining a plurality of channel quality information corresponding to the plurality of test carriers, respectively; generating a test result according to the plurality of channel quality information; and selecting a target channel from the plurality of candidate channels according to the test result.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: February 2, 2016
    Assignee: Realtek Semiconductor Corp.
    Inventors: Wei-Hsuan Chang, Chung-Yao Chang
  • Publication number: 20150189537
    Abstract: This invention discloses a wireless communication device and a method of determining a target set of transmission rates of the wireless communication device. The wireless communication device transmits data packets according to a plurality of transmission rates included in the target set of transmission rates. The method includes steps of: providing a plurality of candidate sets of transmission rates; transmitting a plurality of data packets according to a primary set of transmission rates; counting retry times of the data packets in a predetermined period of time and generating a counting result; and selecting one of the candidate sets of transmission rates according to the counting result to be the target set of transmission rates.
    Type: Application
    Filed: August 19, 2014
    Publication date: July 2, 2015
    Inventors: Wei-Hsuan CHANG, Chung-Yao CHANG
  • Publication number: 20150157799
    Abstract: A needleless connector module comprises: a sleeve tube, an elastic valve, and a flow guiding unit. The elastic valve sleeves an upper guiding tube of the flow guiding unit. A hollow shoulder portion of the elastic valve abuts a slanted retaining wall of the sleeve tube. Under a first usage condition, the hollow head portion of the elastic valve encloses the upper guiding tube narrow portion, hiding the first guiding opening in the airtight seam. Under a second usage condition, an injection tube presses the top face of the elastic valve, a hollow head portion of the elastic valve presses downward, driving the valve inner wall to abut a waist platform formed on the guiding tube, such that the first guiding opening is exposed outside the airtight seam, and such that the first guiding opening is connected to an injection opening of the injection tube.
    Type: Application
    Filed: August 2, 2014
    Publication date: June 11, 2015
    Inventors: CHIH-LUNG CHEN, WEI-HSUAN CHANG, CHIH-WEI CHIU
  • Publication number: 20150157800
    Abstract: A needleless connector module comprises: a sleeve tube, an elastic valve, a flow guiding unit and an extension unit. The elastic valve sleeves a guiding tube of the flow guiding unit. A hollow shoulder portion of the elastic valve abuts a slanted retaining wall of the sleeve tube. Under a first usage condition, the hollow head portion of the elastic valve encloses the guiding tube narrow portion, hiding the first guiding opening in the airtight seam. Under a second usage condition, an injection tube presses the top face of the elastic valve, a hollow head portion of the elastic valve presses downward, driving the valve inner wall to abut a waist platform formed on the guiding tube, such that the first guiding opening is exposed outside the airtight seam, and such that the first guiding opening is connected to an injection opening of the injection tube.
    Type: Application
    Filed: August 4, 2014
    Publication date: June 11, 2015
    Inventors: CHIH-LUNG CHEN, WEI HSUAN CHANG, CHIH-WEI CHIU
  • Patent number: 9019705
    Abstract: A server system and a server thereof are provided. The server system includes a rack, a server, and a fan module, wherein the server and the fan module are located in the rack. The server includes a chassis, a circuit board, a first heat source, a second heat source, a liquid cooling device, and a shielding cover. The circuit board is disposed on the chassis, and the first heat source and the second heat source are disposed on the circuit board. The liquid cooling device is thermally connected to the second heat source covered by the shielding cover. When the fan module is in operation, outside air is taken into the server by the fan module. The flow rate of an air flow passing by the first heat source is greater than that of another air flow passing by the second heat source capped by the shielding cover.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: April 28, 2015
    Assignees: Inventec (Pudong) Technology Corporation, Inventec Corporation
    Inventors: Kai-Yang Tung, Wei-Hsuan Chang
  • Patent number: 8995248
    Abstract: A power adjusting apparatus communicating with a remote terminal is provided. The apparatus includes: a transceiving unit transmitting a plurality of test packets by a plurality of powers; a processing unit coupled to the transceiving unit, and deciding a transmission power for transmitting a subsequent packet according to at least one retransmission number of transmitting the test packets.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: March 31, 2015
    Assignee: Realtek Semiconductor Corp.
    Inventors: Wei-Hsuan Chang, Chung-Yao Chang, Der-Zheng Liu, Kuang-Yu Yen
  • Publication number: 20150028265
    Abstract: A conjugated polymer for electronic devices can include a repeated unit having the structure of formula (I)
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Inventors: Yang Yang, Letian Dou, Wei-Hsuan Chang
  • Publication number: 20140169195
    Abstract: The present invention discloses a wireless transmission rate adjustment method for adjusting the wireless transmission rate of a wireless transmission device.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 19, 2014
    Applicant: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Chien-Wei Hsin, Wei-Hsuan Chang, Chung-Yao Chang
  • Publication number: 20140121607
    Abstract: A switchable device for closed suction catheters includes a device body and a two-way switch valve. The device body is formed with a valve sleeve, a patient tubing adaptor, a side port, and a catheter adaptor. The valve sleeve is formed with a cavity therein to allow the two-way switch valve to correspondingly rotate with respect to the device body. The catheter adaptor and the patient tubing adaptor are formed on opposing ends of the valve sleeve, thereby able to establish an unobstructed path therebetween. The side port is slantingly formed and extended from the patient tubing adaptor for smooth passage of flow therebetween. A groove is formed on one end of the patient tubing adaptor as a 360-degree freely rotatable coupling element thereof.
    Type: Application
    Filed: April 20, 2013
    Publication date: May 1, 2014
    Applicant: LILY MEDICAL CORPORATION
    Inventor: WEI HSUAN CHANG