Patents by Inventor Chih-Wen Wu

Chih-Wen Wu 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: 20240421773
    Abstract: An electronic device includes a driving amplifier, a power amplifier, a power detector, and a bias circuit. The driving amplifier outputs a radio frequency (RF) signal. The power amplifier is electrically connected to the driving amplifier. The power amplifier includes an input end. The power amplifier receives the RF signal through the input end. The power amplifier amplifies the RF signal. The power detector is electrically coupled to the input end and detects the input power of the RF signal. The power detector outputs a driving voltage according to the input power. The bias circuit is electrically connected to the power amplifier and the power detector. The bias circuit outputs a first driving current to the power amplifier according to the driving voltage. The power amplifier amplifies the power of the RF signal from the input power to a target power according to the first driving current.
    Type: Application
    Filed: May 31, 2024
    Publication date: December 19, 2024
    Inventor: Chih-Wen WU
  • Patent number: 10965264
    Abstract: A bias circuit generates a bias current to an RF power amplifier used for transmitting RF signals, and the amount of the bias current supplied to the RF power amplifier can be configured in multiple modes through transistor switches that are controlled by mode control signals, so that the bias current supplied to the RF power amplifier can be adjusted according to the required power level of the transmitting RF signals. In addition, the bias current can be turned off by another transistor switch that is controlled by a power control signal for saving power while the RF power amplifier is not transmitting RF signals.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: March 30, 2021
    Assignee: Rafael Microelectronics, Inc.
    Inventors: Chih-Wen Wu, Po Chang Lin, Chun Hua Tseng
  • Patent number: 10903797
    Abstract: A bias circuit for supplying a bias current to an RF power amplifier by using a field-effect transistor (FET) that is controlled by a logic control signal, such as a CMOS logic control signal, for turning on or turning off the bias current supplied to the RF power amplifier, wherein the bias current will be supplied to the RF power amplifier when the FET is on, and the bias current will not be supplied to the RF power amplifier when the FET is off.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: January 26, 2021
    Assignee: Rafael Microelectronics, Inc.
    Inventors: Chih-Wen Wu, Szu-Yao Chu
  • Patent number: 10884324
    Abstract: The disclosure provides a moving apparatus for a projector. The projector includes a body, a processing unit and a projection lens. The moving apparatus includes a base having a through-base opening. At least one moving stage movably disposed on a front side surface of the base along a plane and has at least one through-stage opening aligned with the through-base opening. At least one magnetic component disposed on a carrier board, wherein a projection position of the projection lens is positioned by the at least one magnetic board through magnetic attraction. The at least one magnetic component is electrically connected to the processing unit.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: January 5, 2021
    Assignee: Coretronic Corporation
    Inventors: Chih-Wen Wu, Chien-Tsai Chueh
  • Publication number: 20200350881
    Abstract: A bias circuit generates a bias current to an RF power amplifier used for transmitting RF signals, and the amount of the bias current supplied to the RF power amplifier can be configured in multiple modes through transistor switches that are controlled by mode control signals, so that the bias current supplied to the RF power amplifier can be adjusted according to the required power level of the transmitting RF signals. In addition, the bias current can be turned off by another transistor switch that is controlled by a power control signal for saving power while the RF power amplifier is not transmitting RF signals.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 5, 2020
    Inventors: Chih-Wen Wu, Po Chang Lin, Chun Hua Tseng
  • Publication number: 20200266767
    Abstract: A bias circuit for supplying a bias current to an RF power amplifier by using a field-effect transistor (FET) that is controlled by a logic control signal, such as a CMOS logic control signal, for turning on or turning off the bias current supplied to the RF power amplifier, wherein the bias current will be supplied to the RF power amplifier when the FET is on, and the bias current will not be supplied to the RF power amplifier when the FET is off.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 20, 2020
    Inventors: Chih-Wen Wu, Szu-Yao Chu
  • Publication number: 20200004114
    Abstract: The disclosure provides a moving apparatus for a projector. The projector includes a body, a processing unit and a projection lens. The moving apparatus includes a base having a through-base opening. At least one moving stage movably disposed on a front side surface of the base along a plane and has at least one through-stage opening aligned with the through-base opening. At least one magnetic component disposed on a carrier board, wherein a projection position of the projection lens is positioned by the at least one magnetic board through magnetic attraction. The at least one magnetic component is electrically connected to the processing unit.
    Type: Application
    Filed: May 2, 2019
    Publication date: January 2, 2020
    Applicant: Coretronic Corporation
    Inventors: Chih-Wen Wu, Chien-Tsai Chueh
  • Patent number: 10481646
    Abstract: A computer housing including a plurality of panels including a front panel, a top panel, a rear panel, a bottom panel, a left panel, and a right panel coupled together to form the computer housing. The computer housing also includes a beveled portion disposed between at least one of (i) the front panel and the top panel, (ii) the top panel and the rear panel, (iii) the rear panel and the bottom panel, and (iv) the bottom panel and the front panel, and at least two engagement members disposed in each corner of the computer housing. At least one engagement member is disposed in the beveled portion and the at least two engagement members are disposed at a same distance from each other in each corner. The computer housing further includes a supporting member removably attached to each beveled portion.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: November 19, 2019
    Assignee: Cooler Master Technology Inc.
    Inventors: Chih-Wen Wu, Chia-Hsiang Chi, Kuei-Yun Feng
  • Patent number: 10275082
    Abstract: An intelligent hybrid touch display device, including: a touch display unit; a rotary mechanical switch, being integrated with the touch display unit in a body; and a control unit, located in the body and including: a first interface for driving the touch display unit; a second interface coupled with the rotary mechanical switch; a touch and switch detection unit coupled with the first interface and the second interface; a transmission interface for communicating with at least one external device; and a processor and an operating system stored in a memory, the processor being coupled with the touch and switch detection unit and the transmission interface, and being used for executing a control program with a support of the operating system, so that the touch display unit and the rotary mechanical switch can cooperate to provide a hybrid operation for selecting, changing or activating function options.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: April 30, 2019
    Assignee: YICHENG PRECISION INC.
    Inventors: Jen-Chieh Chang, Chung-Lin Chia, Han-Chang Chen, Yen-Hung Tu, Chih-Wen Wu
  • Patent number: 10141892
    Abstract: A bias circuit for supplying a bias current to a RF power amplifier by using at least two voltage reference circuits coupled between the base terminal of a bipolar transistor and a voltage supply for generating a bias current to the RF power amplifier, wherein each of the at least two voltage reference circuits respectively clamps to a reference voltage at a corresponding terminal node of the voltage reference circuit on a conductive path having a current flowing from the voltage supply to the base terminal of the bipolar transistor, wherein when the current flowing out of the voltage supply increases, the current flowing through each of the at least two voltage reference circuits will also increases, so that the variation range of the bias current to the RF power amplifier will be kept in a smaller range compared with the variation range of the current flowing out of the power supply, thereby increasing the linearity of the RF power amplifier.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: November 27, 2018
    Assignee: RAFAEL MICROELECTRONICS, INC.
    Inventor: Chih-Wen Wu
  • Publication number: 20180299930
    Abstract: A computer housing including a plurality of panels including a front panel, a top panel, a rear panel, a bottom panel, a left panel, and a right panel coupled together to form the computer housing. The computer housing also includes a beveled portion disposed between at least one of (i) the front panel and the top panel, (ii) the top panel and the rear panel, (iii) the rear panel and the bottom panel, and (iv) the bottom panel and the front panel, and at least two engagement members disposed in each corner of the computer housing. At least one engagement member is disposed in the beveled portion and the at least two engagement members are disposed at a same distance from each other in each corner. The computer housing further includes a supporting member removably attached to each beveled portion.
    Type: Application
    Filed: May 25, 2017
    Publication date: October 18, 2018
    Inventors: Chih-Wen WU, Chia-Hsiang CHI, Kuei-Yun FENG
  • Publication number: 20170371492
    Abstract: A software-defined sensing system capable of responding to CPU commands, including: at least one input operation sensing module; at least one driving unit for driving the at least one input operation sensing module via at least one first interface; at least one control unit for receiving at least one sensors-configuration command via at least one second interface to control the at least one driving unit; at least one central processing unit, having at least one first function library to provide at least one sensors-configuration setting function for determining the sensors-configuration command; and at least one application program having at least one sensors-configuration function call instruction for generating the sensors-configuration command to provide at least one input sensing function.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 28, 2017
    Inventors: Han-Chang CHEN, Chung-Lin CHIA, Chih-Wen WU, Yen-Hung TU, Jen-Chieh CHANG
  • Publication number: 20170364205
    Abstract: An intelligent hybrid touch display device, including: a touch display unit; a rotary mechanical switch, being integrated with the touch display unit in a body; and a control unit, located in the body and including: a first interface for driving the touch display unit; a second interface coupled with the rotary mechanical switch; a touch and switch detection unit coupled with the first interface and the second interface; a transmission interface for communicating with at least one external device; and a processor and an operating system stored in a memory, the processor being coupled with the touch and switch detection unit and the transmission interface, and being used for executing a control program with a support of the operating system, so that the touch display unit and the rotary mechanical switch can cooperate to provide a hybrid operation for selecting, changing or activating function options.
    Type: Application
    Filed: September 1, 2017
    Publication date: December 21, 2017
    Inventors: Jen-Chieh CHANG, Chung-Lin CHIA, Han-Chang CHEN, Yen-Hung TU, Chih-Wen WU
  • Patent number: 9787307
    Abstract: A hybrid touch button, including: a touch display unit having a touch display area; a mechanical switch having a plurality of conductive contacts; and a control unit, having a power interface for coupling with a power source, a first interface coupled with the touch display area, a second interface coupled with the plurality of conductive contacts, and an output interface, wherein the control unit derives first input information from the first interface and second input information from the second interface, and determines an output configuration of the output interface according to the first input information and the second input information.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: October 10, 2017
    Assignee: YICHENG PRECISION INC.
    Inventors: Jen-Chieh Chang, Chung-Lin Chia, Han-Chang Chen, Yen-Hung Tu, Chih-Wen Wu
  • Patent number: 9778784
    Abstract: A touch display driving circuit capable of responding to CPU commands, including: a first interface receiving touch configuration data from a CPU and outputting touch report data to the CPU; a second interface coupling with a touch display module; a control unit executing a touch detection procedure on the touch display module via the second interface to derive touch detected data, and processing the touch detected data to generate the touch report data, wherein the touch detection procedure is determined according to the touch configuration data determining a connection configuration of at least one multiplexer and a weighting configuration of at least one touch point, and the content of the touch report data include a sensed pressure profile, a finger print, a palm print, an ear image, characteristics of a finger print, characteristics of a palm print, or characteristics of an ear image.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: October 3, 2017
    Assignee: RICH IP TECHNOLOGY INC.
    Inventors: Han-Chang Chen, Chung-Lin Chia, Chih-Wen Wu, Yen-Hung Tu, Jen-Chieh Chang
  • Patent number: 9733753
    Abstract: A flat self-luminous touch switch, including: a self-luminous touch unit, including at least one flat self-luminous pixel and a pixel driving interface; and a switch control unit, including a first driving interface and a second driving interface, wherein, the first driving interface is coupled with the pixel driving interface to provide at least one pixel driving signal and transmit a touch detection signal; and the second driving interface provides an analog switch channel and/or at least one digital output signal according to a detection result of the touch detection signal.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: August 15, 2017
    Assignee: RICH IP TECHNOLOGY INC.
    Inventors: Han-Chang Chen, Yen-Hung Tu, Chung-Lin Chia, Chih-Wen Wu, Jen-Chieh Chang
  • Patent number: 9690421
    Abstract: A touch system using a processor to configure a touch detection architecture and including a sensor unit, a connection unit, a touch scan unit, a touch detection unit, and a processor unit. The sensor unit has a plurality of sensors. The connection unit determines a sensors-joined configuration of the plurality of sensors according to at least one connection control signal. The touch scan unit coupling at least one touch signal to the connection unit according to at least one scan configuration signal. The touch detection unit outputting the touch signal and deriving touch information from a parameter of the touch signal according to at least one operation mode configuration signal. The processor unit outputting the at least one connection control signal, the scan configuration signal, and the operation mode configuration signal according to a content of a control table, and receiving the touch information.
    Type: Grant
    Filed: October 17, 2015
    Date of Patent: June 27, 2017
    Assignee: RICH IP TECHNOLOGY INC.
    Inventors: Jen-Chieh Chang, Chung-Lin Chia, Han-Chang Chen, Yen-Hung Tu, Chih-Wen Wu
  • Patent number: 9477365
    Abstract: A touch display device having auxiliary capacitor, including: at least one touch operation area, each having two opposing substrates, between which are a first electrode, a first conductive line coupled with the first electrode, a second electrode, a second conductive line coupled with the second electrode, and a display layer neighboring both the first electrode and the second electrode; a display driver unit for outputting at least one display driving voltage; a touch detection unit having at least one touch signal sensing port; at least one auxiliary capacitor, each coupled with one of the at least one touch operation area; and at least one switch element; wherein, each of the at least one display driving voltage is coupled to one of the at least one touch operation area via one of the at least one switch element.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: October 25, 2016
    Assignee: RICH IP TECHNOLOGY INC.
    Inventors: Han-Chang Chen, Yen-Hung Tu, Chung-Lin Chia, Chih-Wen Wu, Jen-Chieh Chang
  • Patent number: 9430076
    Abstract: A driving circuit capable of enabling a display structure to provide a touch function, including: a first multiplexing interface for coupling with multiple gate driving lines; a second multiplexing interface for coupling with at least one storage capacitor driving line; a third multiplexing interface for coupling with multiple source driving lines; a fourth multiplexing interface for coupling with multiple transparent electrodes; and a control unit for driving the gate driving lines via the first multiplexing interface to form a capacitive network on a TFT display structure, and performing a capacitive touch detection procedure on the capacitive network via an interface selected from a group consisting of the second multiplexing interface, the third multiplexing interface, the fourth multiplexing interface, and any combination thereof.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: August 30, 2016
    Assignee: RICH IP TECHNOLOGY INC.
    Inventors: Han-Chang Chen, Yen-Hung Tu, Chung-Lin Chia, Chih-Wen Wu
  • Publication number: 20160239145
    Abstract: A touch button system having externally programmable display, including: at least one touch display button, each having a touch display area, a button operation data output interface, and a display data input interface; and a control unit, including at least one touch display interface, at least one input interface, and at least one output interface, wherein, the at least one touch display interface is coupled with the display data input interface and the button operation data output interface of the at least one touch display button for transmitting display data and deriving button operation data; the at least one input interface is used for receiving image data from an external device, and the control unit generates the display data according to the image data; and the at least one output interface is used for outputting at least one operation code.
    Type: Application
    Filed: December 17, 2015
    Publication date: August 18, 2016
    Inventors: Jen-Chieh CHANG, Chung-Lin CHIA, Han-Chang CHEN, Yen-Hung TU, Chih-Wen WU