Patents by Inventor Feng-Cheng Chang

Feng-Cheng 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).

  • Publication number: 20240080376
    Abstract: A task dispatching method for EPD tag devices includes receiving a task command; the server system forwarding the task command to a target router to which the target EPD tag device is connected; the target router checking whether the target EPD tag device is currently connected thereto; when it is determined that the target EPD tag device is not currently connected to the target router, the target router notifying the server system that the target EPD tag device is offline; in response to receiving an online notification indicating that the target EPD tag device is connected to another router, the server system updating a connection list accordingly, and forwarding the task command to an updated target router; and when it is determined that the target EPD tag device is currently connected to the target router, the target router delivering the task command to the target EPD tag device.
    Type: Application
    Filed: April 27, 2023
    Publication date: March 7, 2024
    Inventors: Chih-Cheng Chang, Feng-Hsiang Chung, Yi-Bin Yu
  • Publication number: 20240032783
    Abstract: An exemplary endoscope may be provided with a first shaft, a second shaft and an image capture module. The first shaft may extend from a distal end of an endoscope body and may include a distal opening and a proximal opening. The second shaft may extend through an interior of the first shaft and may also include a distal opening and a proximal opening. The image capture module may be in operable communication with the endoscope body distal end. The endoscope may be configured to clear debris from the image capture module with suction when the second shaft proximal opening and first shaft proximal opening are in alignment. Methods of use are also disclosed.
    Type: Application
    Filed: July 26, 2023
    Publication date: February 1, 2024
    Inventors: Sheng-Chi LIN, Feng-Cheng CHANG, Yu-Jen LIN
  • Patent number: 11801337
    Abstract: The present patent specification provides a medical device including an outer tube, an operation portion and a control portion. The operation portion is at least partially located in the outer tube. The control portion has a channel communicating with the outer tube along a first direction; a second end of the control portion is coupled with a first end of the outer tube so that the channel and the outer tube communicate with each other along the first direction. The control portion includes a control module including a suction control unit, a suction, a suction valve actuator and a switching unit. The suction control unit has a stopping unit and is configured to move along a second direction which is different from the first direction. The suction valve actuator is located at a side opposite the suction control unit with the channel therebetween and the suction valve actuator is configured to be activated by the suction control unit.
    Type: Grant
    Filed: December 30, 2021
    Date of Patent: October 31, 2023
    Assignee: Clearmind Biomedical Inc.
    Inventors: Sheng Chi Lin, Feng-cheng Chang, Yu Jen Lin
  • Publication number: 20230211064
    Abstract: The present patent specification provides a medical device including an outer tube, an operation portion and a control portion. The operation portion is at least partially located in the outer tube. The control portion has a channel communicating with the outer tube along a first direction; a second end of the control portion is coupled with a first end of the outer tube so that the channel and the outer tube communicate with each other along the first direction. The control portion includes a control module including a suction control unit, a suction, a suction valve actuator and a switching unit. The suction control unit has a stopping unit and is configured to move along a second direction which is different from the first direction. The suction valve actuator is located at a side opposite the suction control unit with the channel therebetween and the suction valve actuator is configured to be activated by the suction control unit.
    Type: Application
    Filed: December 30, 2021
    Publication date: July 6, 2023
    Inventors: Sheng Chi LIN, Feng-cheng CHANG, Yu Jen LIN
  • Patent number: 11592495
    Abstract: Disclosed is a test system including a transmitter, a receiver, a measuring circuit, and a control circuit. The transmitter is coupled to the receiver in a DC coupling manner, and includes: a signal input circuit determining an output signal according to an input signal; a current source coupled between the signal input circuit and a low power-supply terminal and configured to determine a total current passing through the signal input circuit in a non-open/short-circuited condition; and a signal output wire circuit outputting the output signal for a performance test. The receiver includes: an impedance circuit coupled to the signal output wire circuit; and a coupling circuit coupling the impedance circuit with a high power-supply terminal. The measuring circuit measures a target current/voltage between the high power-supply terminal and low power-supply terminal to generate a measurement result.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: February 28, 2023
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Fei Xu, Wei-Xiong He, Feng-Cheng Chang
  • Publication number: 20230018206
    Abstract: A dual real-time clock battery power unit may comprise a top battery housing for retaining a first battery, having an exterior fastener arm for partially inserting beneath an exterior fastener lip of a bottom battery housing for retaining a second battery when the top and bottom battery housings are in a closed clamshell configuration. A positive terminal for contacting a second battery positive surface, and a bottom negative terminal for contacting a second battery negative surface may be mounted within the bottom battery housing. A top negative terminal may be mounted within the top battery housing to contact a first battery negative surface. The top and bottom battery housings may be operably connected to form the closed clamshell configuration disposing the bottom battery housing between the top battery housing and a printed circuit board (PCB), and electrically coupling the PCB to the top and bottom batteries, forming a parallel circuit.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 19, 2023
    Applicant: Dell Products, LP
    Inventors: Chih-Nan Peng, Feng-Cheng Chang, Chung-An Lin
  • Publication number: 20230000315
    Abstract: A medical device includes an outer tube, an operation portion at least partially located in the outer tube and a control portion having a channel communicated with the outer tube along the first direction. The second end of the control portion is coupled with the first end of the outer tube, so that the channel and the outer tube are communicated with each other along the first direction. The control portion includes a control module including a suction control unit having a stopping unit and configured to move along a second direction which is different form the first direction, a suction port actuator located at a side opposite to the suction control unit with the channel therebetween and a switching unit configured to switch the work status of the operation portion. The suction port actuator is configured to be activated by the suction control unit.
    Type: Application
    Filed: June 30, 2022
    Publication date: January 5, 2023
    Applicant: Clearmind Biomedical, Inc.
    Inventors: Sheng-Chi LIN, Feng-Cheng CHANG, Yu-Jen LIN
  • Publication number: 20220133138
    Abstract: A medical device configured to move an introducer into a passageway or tissue without the conventional use of an obturator or dilator while concurrently affording visual control over the movement of a distal end of the introducer in the passageway or tissue.
    Type: Application
    Filed: October 29, 2020
    Publication date: May 5, 2022
    Inventors: Sheng-chi Lin, Feng-cheng Chang, Yi-chen Wang
  • Patent number: 11275126
    Abstract: A test system includes a transmitter, capacitor, and receiver. The transmitter includes: an output circuit coupled to the receiver via the capacitor; a transmitting circuit transmitting a predetermined signal to a pad of the output circuit during a first test; a signal generator outputting a first signal and second signal to the pad during a first process and second process of a second test; and a comparator comparing the pad's signal with a reference signal in the first process and second process to determine whether the second test passes. The receiver includes: an input circuit coupled to the transmitter via the capacitor; a switch coupled between the input circuit and a receiving circuit to be conducting in the first test and second process and nonconducting in the first process; and the receiving circuit determining whether the first test passes according to the predetermined signal and assisting the capacitor in discharging.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: March 15, 2022
    Assignee: REALTEK SEMICONDUCTOR CORPORATION
    Inventors: Feng-Cheng Chang, Xiao-Guo Zheng, Wei-Xiong He
  • Patent number: 11076755
    Abstract: An endoscope particularly suited for endocranial procedures and a method of using the endoscope. In some examples the endoscope is rigid except for a bend/tilt portion near a distal end of a rigid tube that is inserted in a patient's cranium, which distal end is controlled in a degree and direction of tilt with a finger operated controller at the endoscope's handle. Some examples use telescoping tubes that allow customizing the endoscope size for specific procedures. A distal portion of the endoscope can be disposable, supplied in a sterile package for a single procedure, thus taking into account contamination dangers that are particularly high for intracranial and certain other interventions and the fact that it can be difficult or impossible to effectively autoclave heat-sensitive components of certain endoscopes or effectively sterilize them using other techniques.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 3, 2021
    Assignee: Clearmind Biomedical, Inc.
    Inventors: Po-Hao Huang, Feng-Cheng Chang, Sheng-Chi Lin
  • Publication number: 20210116515
    Abstract: Disclosed is a test system including a transmitter, a receiver, a measuring circuit, and a control circuit. The transmitter is coupled to the receiver in a DC coupling manner, and includes: a signal input circuit determining an output signal according to an input signal; a current source coupled between the signal input circuit and a low power-supply terminal and configured to determine a total current passing through the signal input circuit in a non-open/short-circuited condition; and a signal output wire circuit outputting the output signal for a performance test. The receiver includes: an impedance circuit coupled to the signal output wire circuit; and a coupling circuit coupling the impedance circuit with a high power-supply terminal. The measuring circuit measures a target current/voltage between the high power-supply terminal and low power-supply terminal to generate a measurement result.
    Type: Application
    Filed: October 12, 2020
    Publication date: April 22, 2021
    Inventors: FEI XU, WEI-XIONG HE, FENG-CHENG CHANG
  • Publication number: 20210011091
    Abstract: A test system includes a transmitter, capacitor, and receiver. The transmitter includes: an output circuit coupled to the receiver via the capacitor; a transmitting circuit transmitting a predetermined signal to a pad of the output circuit during a first test; a signal generator outputting a first signal and second signal to the pad during a first process and second process of a second test; and a comparator comparing the pad's signal with a reference signal in the first process and second process to determine whether the second test passes. The receiver includes: an input circuit coupled to the transmitter via the capacitor; a switch coupled between the input circuit and a receiving circuit to be conducting in the first test and second process and nonconducting in the first process; and the receiving circuit determining whether the first test passes according to the predetermined signal and assisting the capacitor in discharging.
    Type: Application
    Filed: June 25, 2020
    Publication date: January 14, 2021
    Inventors: FENG-CHENG CHANG, XIAO-GUO ZHENG, WEI-XIONG HE
  • Patent number: 10441153
    Abstract: An endoscope particularly suited for endocranial procedures and a method of using the endoscope. In some examples the endoscope is rigid except for a bend/tilt portion near a distal end of a rigid tube that is inserted in a patient's cranium, which distal end is controlled in a degree and direction of tilt with a finger operated controller at the endoscope's handle. Some examples use telescoping tubes that allow customizing the endoscope size for specific procedures. A distal portion of the endoscope can be disposable, supplied in a sterile package for a single procedure, thus taking into account contamination dangers that are particularly high for intracranial and certain other interventions and the fact that it can be difficult or impossible to effectively autoclave heat-sensitive components of certain endoscopes or effectively sterilize them using other techniques.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: October 15, 2019
    Assignee: Clearmind BioMedical, Inc.
    Inventors: Po-Hao Huang, Feng-Cheng Chang, Sheng-Chi Lin
  • Publication number: 20190239740
    Abstract: An endoscope particularly suited for endocranial procedures and a method of using the endoscope. In some examples the endoscope is rigid except for a bend/tilt portion near a distal end of a rigid tube that is inserted in a patient's cranium, which distal end is controlled in a degree and direction of tilt with a finger operated controller at the endoscope's handle. Some examples use telescoping tubes that allow customizing the endoscope size for specific procedures. A distal portion of the endoscope can be disposable, supplied in a sterile package for a single procedure, thus taking into account contamination dangers that are particularly high for intracranial and certain other interventions and the fact that it can be difficult or impossible to effectively autoclave heat-sensitive components of certain endoscopes or effectively sterilize them using other techniques.
    Type: Application
    Filed: March 26, 2019
    Publication date: August 8, 2019
    Inventors: PO-HAO HUANG, FENG-CHENG CHANG, SHENG-CHI LIN
  • Patent number: 10331597
    Abstract: Disclosed is a USB Type-C switching circuit configured for arranging a plurality of signals of a USB Type-C connector. The USB Type-C switching circuit can be used in products having DisplayPort Alternate mode, and includes a plurality of signal receivers/receivers, a plurality of series-parallel transforming circuits and a multiplexer. The signal receivers/receivers are connected to the USB Type-C connector to receive/transmit signals. The series-parallel transforming circuits are connected to the signal receivers/receivers to convert the signals between a parallel domain and a serial domain. The multiplexer is connected to the series-parallel transforming circuits to arrange the signals in the parallel domain according to a control signal.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: June 25, 2019
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Bing-Juo Chuang, Feng-Cheng Chang
  • Publication number: 20180235441
    Abstract: An endoscope particularly suited for endocranial procedures and a method of using the endoscope. In some examples the endoscope is rigid except for a bend/tilt portion near a distal end of a rigid tube that is inserted in a patient's cranium, which distal end is controlled in a degree and direction of tilt with a finger operated controller at the endoscope's handle. Some examples use telescoping tubes that allow customizing the endoscope size for specific procedures. A distal portion of the endoscope can be disposable, supplied in a sterile package for a single procedure, thus taking into account contamination dangers that are particularly high for intracranial and certain other interventions and the fact that it can be difficult or impossible to effectively autoclave heat-sensitive components of certain endoscopes or effectively sterilize them using other techniques.
    Type: Application
    Filed: April 23, 2018
    Publication date: August 23, 2018
    Inventors: PO-HAO HUANG, FENG-CHENG CHANG, SHENG-CHI LIN
  • Patent number: 9968249
    Abstract: An endoscope particularly suited for endocranial procedures and a method of using the endoscope. In some examples the endoscope is rigid except for a bend/tilt portion near a distal end of a rigid tube that is inserted in a patient's cranium, which distal end is controlled in a degree and direction of tilt with a finger operated controller at the endoscope's handle. Some examples use telescoping tubes that allow customizing the endoscope size for specific procedures. A distal portion of the endoscope can be disposable, supplied in a sterile package for a single procedure, thus taking into account contamination dangers that are particularly high for intracranial and certain other interventions and the fact that it can be difficult or impossible to effectively autoclave heat-sensitive components of certain endoscopes or effectively sterilize them using other techniques.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: May 15, 2018
    Assignee: Clearmind Biomedical, Inc.
    Inventors: Po-Hao Huang, Sheng-Chi Lin, Feng-Cheng Chang
  • Publication number: 20180032460
    Abstract: Disclosed is a USB Type-C switching circuit configured for arranging a plurality of signals of a USB Type-C connector. The USB Type-C switching circuit can be used in products having DisplayPort Alternate mode, and includes a plurality of signal receivers/receivers, a plurality of series-parallel transforming circuits and a multiplexer. The signal receivers/receivers are connected to the USB Type-C connector to receive/transmit signals. The series-parallel transforming circuits are connected to the signal receivers/receivers to convert the signals between a parallel domain and a serial domain. The multiplexer is connected to the series-parallel transforming circuits to arrange the signals in the parallel domain according to a control signal.
    Type: Application
    Filed: December 20, 2016
    Publication date: February 1, 2018
    Inventors: BING-JUO CHUANG, FENG-CHENG CHANG
  • Patent number: 9686105
    Abstract: The present disclosure provides a crystal-less clock and data recovery (CDR) circuit and a frequency detection method thereof. The CDR circuit includes a clock generator and a frequency detection module. The clock generator is operable to generate a clock signal. The frequency detection module coupled to the clock generator is configured for outputting a control signal to the clock generator to increase or decrease the frequency of the clock signal according to a data signal received and a transition density.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: June 20, 2017
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Feng-Cheng Chang, Xiao-Guo Zheng
  • Publication number: 20170079520
    Abstract: An endoscope particularly suited for endocranial procedures and a method of using the endoscope. In some examples the endoscope is rigid except for a bend/tilt portion near a distal end of a rigid tube that is inserted in a patient's cranium, which distal end is controlled in a degree and direction of tilt with a finger operated controller at the endoscope's handle. Some examples use telescoping tubes that allow customizing the endoscope size for specific procedures. A distal portion of the endoscope can be disposable, supplied in a sterile package for a single procedure, thus taking into account contamination dangers that are particularly high for intracranial and certain other interventions and the fact that it can be difficult or impossible to effectively autoclave heat-sensitive components of certain endoscopes or effectively sterilize them using other techniques.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 23, 2017
    Inventors: Po-Hao Huang, Sheng-Chi Lin, Feng-Cheng Chang