Patents by Inventor Wen-Chi Wang

Wen-Chi Wang 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: 20190192437
    Abstract: The disclosure provides a powder form and a hydrogel composition for alleviating degenerative joint and tendon tear. The powder form consists essentially of a 120-380 parts by weight biodegradable copolymer; 15-75 parts by weight urea; and 100 parts by weight platelet-rich plasma; wherein the biodegradable copolymer has a structure of formula (I) or formula (II): wherein A comprises a hydrophilic polyethylene glycol polymer; B comprises a hydrophobic polyester polymer; BOX is bifunctional group monomer of 2, 2?-bis(2-oxazoline) used for coupling the blocks AB or BAB; and n is an integer greater than or equal to 0.
    Type: Application
    Filed: December 27, 2017
    Publication date: June 27, 2019
    Applicant: Industrial Technology Research Institute
    Inventors: Hsin-Hsin SHEN, Wen-Shiang CHEN, Chueh-Hung WU, Ming-Kuan SUN, Yu-Chi WANG, Sen-Lu CHEN, Wei-Lin YU, Lih-Tao HSU, Shih-Ping LIN
  • Patent number: 10305523
    Abstract: A transmitting device, for handling signal interference, comprises a first transmitting circuit, for processing a first plurality of baseband signals, to generate a first plurality of radio frequency signals; a second transmitting circuit, for processing a second plurality of baseband signals and a plurality of input signals, to generate a second plurality of radio frequency signals; a feedback circuit, coupled to the second transmitting circuit, for processing the second plurality of radio frequency signals and a plurality of leakage signals, to generate a plurality of error signals; and a control circuit, coupled to the first transmitting circuit, the second transmitting circuit and the feedback circuit, for generating the plurality of input signals according to the first plurality of baseband signals and the plurality of error signals.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: May 28, 2019
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chin-Liang Wang, Min-Chau Jan, Wen-Shan Wang, Yuan-Shuo Chang, Wu-Chi Wang, Ying-Hsi Lin
  • Publication number: 20190044526
    Abstract: The present application provides a vector quantization digital-to-analog conversion circuit, applied to an oversampling converter, characterized that the vector quantization digital-to-analog conversion circuit comprises a vector quantization circuit, configured to generate a vector quantization signal, a data weighted averaging circuit, coupled to the vector quantization circuit, comprising a plurality of data weighted averaging sub-circuits, configured to receive the vector quantization signal to generate a plurality of data weighted averaging signals; and a digital-to-analog conversion circuit, coupled to the data weighted averaging circuit, comprising a plurality of digital-to-analog conversion sub-circuits, configured to receive the data weighted averaging signal to generate the analog signal.
    Type: Application
    Filed: October 9, 2018
    Publication date: February 7, 2019
    Inventor: Wen-Chi Wang
  • Publication number: 20180336596
    Abstract: The present application provides an advertising system, which includes a signage device, wherein the signage device includes a display panel configured to play a video; a camera module configured to capture an image; a determining module configured to determine whether or not a human face exists in the image; a wireless transmission module, wherein the wireless transmission module transmits a connection information when the determining module determines that there is a human face in the image; a first communication module; and an user device, wherein the user device includes a wireless reception module; a second communication module; wherein the second communication module establishes a wireless connection with the first communication module according to the connection information when the wireless reception module receives the connection information, and the signage device transmits an audio signal to the user device via the wireless connection.
    Type: Application
    Filed: November 28, 2017
    Publication date: November 22, 2018
    Inventors: Wen-Chi Wang, Yen-Yin Huang
  • Patent number: 10084474
    Abstract: The present application provides a noise shaping circuit including a first modulation unit, configured to generate a first digital output signal according to a first digital input signal, the first modulation unit comprising a first quantizer; a first subtractor, coupled to an input terminal and an output terminal of the first quantizer, configured to generate a first quantization noise; and a second modulation unit, configured to generated a second digital output signal according to a second digital input signal, wherein the second digital input signal is related to the first quantization noise; wherein the noise shaping circuit generates an overall analog output signal according to the first digital output signal and the second digital output signal.
    Type: Grant
    Filed: November 26, 2017
    Date of Patent: September 25, 2018
    Assignee: Shenzhen Goodix Technology Co., Ltd.
    Inventor: Wen-Chi Wang
  • Patent number: 9031516
    Abstract: A transceiver includes an antenna, an impedance adjustment device, an RF (Radio Frequency) front-end circuit, a storage device, and a processor. The antenna receives an RF signal. The impedance adjustment device is coupled to the antenna, and includes a plurality of branch circuit with different impedance values and a switch module. The processor is coupled to the RF front-end circuit and controls the switch modules. In a comparison mode, the switch module selects to connect to the branch circuits individually, and the processor detects each RSSI (Received Signal Strength Indications) value corresponding to the branch circuit and records all of the RSSI values to the storage device respectively. In the comparison mode, the processor further compares the RSSI values to for highest one. Finally, the switch module selects the branch circuit corresponding to the highest RSSI value as a transmission branch.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: May 12, 2015
    Assignee: Accton Technology Corporation
    Inventor: Wen-Chi Wang
  • Publication number: 20140295777
    Abstract: A transceiver includes an antenna, an impedance adjustment device, an RF (Radio Frequency) front-end circuit, a storage device, and a processor. The antenna receives an RF signal. The impedance adjustment device is coupled to the antenna, and includes a plurality of branch circuit with different impedance values and a switch module. The processor is coupled to the RF front-end circuit and controls the switch modules. In a comparison mode, the switch module selects to connect to the branch circuits individually, and the processor detects each RSSI (Received Signal Strength Indications) value corresponding to the branch circuit and records all of the RSSI values to the storage device respectively. In the comparison mode, the processor further compares the RSSI values to for highest one. Finally, the switch module selects the branch circuit corresponding to the highest RSSI value as a transmission branch.
    Type: Application
    Filed: August 2, 2013
    Publication date: October 2, 2014
    Applicant: Accton Technology Corporation
    Inventor: Wen-Chi WANG
  • Patent number: 8411142
    Abstract: The present invention relates to an intellectual surveillance system and a monitoring method thereof. The intellectual surveillance system comprises a camera module and a terminal computer module, wherein the camera module is capable of monitoring and reacting various sudden situations, and then the camera module transmits images and messages of the situations to the terminal computer module through at least one BNC connector and at least one coaxial cable, further that, the terminal module is able to display the images and show a alert so as to complete a secure monitor without any RS-485 series communication port and digital IP camera. Besides, the intellectual surveillance system can control the actions of monitoring and reacting such situations automatically by using the monitoring method.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: April 2, 2013
    Assignee: VTC Electronics Corp.
    Inventors: Che-Yen Lee, Wen-Chi Wang, Julian Lin
  • Patent number: 8284925
    Abstract: A jack detection circuit includes a transition circuit and an AD converter. The transition circuit linearizes analog signals sent from a switching circuit. The AD converter converts the linearized analog signals to digital output signals thereby decreasing the complexity of signal recognition.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: October 9, 2012
    Assignee: Realtek Semiconductor Corp.
    Inventors: Jui Yuan Tsai, Wen Chi Wang, Wei Cheng Tang
  • Patent number: 8026977
    Abstract: A switching mechanism for a video camera includes: a control unit; a driving device connected with and controlled by the control unit; a first belt pulley connected with the driving device; a second belt pulley smaller than the first belt pulley in diameter; a belt looped around the first and second belt pulleys for power transmission, and including a first protuberance; a translation member provided with a second protuberance so that through a loose fitting connection between the two protuberances, the translation member is driven to move; and a positioning element having a positioning plane, at least two inclines, and at least two top surfaces, wherein the positioning plane and the at least two inclines are designed to contact the second protuberance of the translation member alternately so as to restrict and reposition the translation member.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: September 27, 2011
    Assignee: VTC Electronics Corporation
    Inventors: Tai-Kuo Wang, Wen-Chi Wang, Julian Lin
  • Publication number: 20110157364
    Abstract: The present invention relates to an intellectual surveillance system and a monitoring method thereof. The intellectual surveillance system comprises a camera module and a terminal computer module, wherein the camera module is capable of monitoring and reacting various sudden situations, and then the camera module transmits images and messages of the situations to the terminal computer module through at least one BNC connector and at least one coaxial cable, further that, the terminal module is able to display the images and show a alert so as to complete a secure monitor without any RS-485 series communication port and digital IP camera. Besides, the intellectual surveillance system can control the actions of monitoring and reacting such situations automatically by using the monitoring method.
    Type: Application
    Filed: April 28, 2010
    Publication date: June 30, 2011
    Applicant: VTC ELECTRONICS CORP.
    Inventors: Che-Yen Lee, Wen-Chi Wang, Julian Lin
  • Patent number: 7965934
    Abstract: A switching mechanism for a camera device includes a driving device, a first screw bar connecting to the driving device, a second screw bar connecting to the first screw bar, and a lead screw having an end coupled with the second screw bar. The first screw bar is driven by the driving device via a screw thread thereof, and the second screw bar is driven by the first screw bar via a screw thread thereof, thereby driving the lead screw for rotation. The screw nut is disposed on the lead screw and moved back and forth via the rotation of the lead screw. Two stop blocks disposed at two ends of the lead screw respectively are to limit two positions of the moved screw nut while the screw nut is moved beyond a threaded area of the lead screw, upon which time the screw nut is slightly engaged with the lead screw.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: June 21, 2011
    Assignee: VTC Electronics Corp.
    Inventors: Tai-Kuo Wang, Wen-Chi Wang, Julian Lin
  • Patent number: 7918613
    Abstract: A switching mechanism for a camera includes: a control unit; a driving device coupled with and actuated by the control unit; a first gear set coupled with the driving device; a second gear coupled with the first gear set and centrally provided with a rotary shaft having a shaft hole formed with threads; a spindle being female-connected to the shaft hole and which has an axial surface formed with outer threads corresponding to the threads of the shaft hole, thus allowing the second gear to move along and relative to the spindle; and a translation member positioned perpendicular to the spindle and provided with a rack for engaging with the second gear and thus driving the translation member to move perpendicular to the spindle. The second gear drives or does not drive the rack as the engagement therebetween is made or broken.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: April 5, 2011
    Assignee: VTC Electronics Corporation
    Inventors: Tai-Kuo Wang, Wen-Chi Wang, Julian Lin
  • Publication number: 20110007206
    Abstract: A switching mechanism for a video camera includes: a control unit; a driving device connected with and controlled by the control unit; a first belt pulley connected with the driving device; a second belt pulley smaller than the first belt pulley in diameter; a belt looped around the first and second belt pulleys for power transmission, and including a first protuberance; a translation member provided with a second protuberance so that through a loose fitting connection between the two protuberances, the translation member is driven to move; and a positioning element having a positioning plane, at least two inclines, and at least two top surfaces, wherein the positioning plane and the at least two inclines are designed to contact the second protuberance of the translation member alternately so as to restrict and reposition the translation member.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 13, 2011
    Applicant: VTC ELECTRONICS CORP.
    Inventors: Tai-Kuo Wang, Wen-Chi Wang, Julian Lin
  • Patent number: 7868807
    Abstract: A data weighted average circuit is disclosed which includes a lookup unit and a storage unit. The invention uses a lookup table to speed up the circuit operation. Besides, the operation delay is not affected by various orders of the data weighted average circuit and various bit-widths of input data.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: January 11, 2011
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chang-Shun Liu, Yi-Chang Tu, Wen-Chi Wang
  • Publication number: 20100328796
    Abstract: A switching mechanism for a camera includes: a control unit; a driving device coupled with and actuated by the control unit; a first gear set coupled with the driving device; a second gear coupled with the first gear set and centrally provided with a rotary shaft having a shaft hole formed with threads; a spindle being female-connected to the shaft hole and which has an axial surface formed with outer threads corresponding to the threads of the shaft hole, thus allowing the second gear to move along and relative to the spindle; and a translation member positioned perpendicular to the spindle and provided with a rack for engaging with the second gear and thus driving the translation member to move perpendicular to the spindle. The second gear drives or does not drive the rack as the engagement therebetween is made or broken.
    Type: Application
    Filed: June 25, 2009
    Publication date: December 30, 2010
    Applicant: VTC Electronics Corp.
    Inventors: Tai-Kuo Wang, Wen-Chi Wang, Julian Lin
  • Publication number: 20100295933
    Abstract: The present invention discloses a watertight monitoring device and comprises: fixing frame, a watertight cover, an image-capturing module, an upper cover, at least an adjustment tab, at least a plastic film, a front cover, and a rear cover; wherein the fixing frame has an outer surface provided with a recess having at least a through hole, the plastic film having an end coupled with the bottom edge of the adjustment tab and an opposite end passing sequentially through the aperture of the watertight cover and the through hole of the recess on the outer surface of the fixing frame and coupled with the adjustment rod of the image-capturing module, wherein the projecting portion of the adjustment tab can be pushed along the outer surface of the monitoring device so that the adjustment tab is moved in the arc direction, and the plastic film thus driving the adjustment rod of the image-capturing module so as to adjust functions of the image-capturing module.
    Type: Application
    Filed: May 25, 2009
    Publication date: November 25, 2010
    Applicant: VTC ELECTRONICS GROUP
    Inventors: Ming-Feng Hsieh, Wen-Chi Wang, Julian Lin
  • Publication number: 20100278525
    Abstract: A switching mechanism for a camera device includes a driving device, a first screw bar connecting to the driving device, a second screw bar connecting to the first screw bar, and a lead screw having an end coupled with the second screw bar. The first screw bar is driven by the driving device via a screw thread thereof, and the second screw bar is driven by the first screw bar via a screw thread thereof, thereby driving the lead screw for rotation. The screw nut is disposed on the lead screw and moved back and forth via the rotation of the lead screw. Two stop blocks disposed at two ends of the lead screw respectively are to limit two positions of the moved screw nut while the screw nut is moved beyond a threaded area of the lead screw, upon which time the screw nut is slightly engaged with the lead screw.
    Type: Application
    Filed: May 1, 2009
    Publication date: November 4, 2010
    Applicant: VTC ELECTRONICS GROUP
    Inventors: Tai-Kuo Wang, Wen-Chi Wang, Julian Lin
  • Patent number: 7697697
    Abstract: An apparatus and method of automatic identification an external audio input/output device. The external device connected to an audio jack is identified as an audio output or input device, according to the impedance thereof. Furthermore, the present invention automatically selects the most suitable internal circuit to connect to the external device.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: April 13, 2010
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chu-Ting Su, Yi-Shu Chang, Wen-Chi Wang
  • Patent number: 7633418
    Abstract: A sigma-delta modulator and an output rate reduction method are disclosed. The sigma-delta modulator comprises an integrator, an analog-to-digital converter, and a controller. An input signal is received by the integrator to generate an integrated signal. The integrated signal is then converted by the analog-to-digital converter into a digital modulation signal. The input signal is received by the controller to calculate an input signal power. The analog-to-digital converter can be controlled by the controller based on a predetermined power value and a sum of the input signal power and a total quantization error power. By the way mentioned above, the out rate of the sigma-delta modulator is reduced.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: December 15, 2009
    Assignee: Realtek Semiconductor Corp.
    Inventor: Wen-Chi Wang