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).
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Publication number: 20240080376Abstract: 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: ApplicationFiled: April 27, 2023Publication date: March 7, 2024Inventors: Chih-Cheng Chang, Feng-Hsiang Chung, Yi-Bin Yu
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Publication number: 20240032783Abstract: 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: ApplicationFiled: July 26, 2023Publication date: February 1, 2024Inventors: Sheng-Chi LIN, Feng-Cheng CHANG, Yu-Jen LIN
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Patent number: 11801337Abstract: 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: GrantFiled: December 30, 2021Date of Patent: October 31, 2023Assignee: Clearmind Biomedical Inc.Inventors: Sheng Chi Lin, Feng-cheng Chang, Yu Jen Lin
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Publication number: 20230211064Abstract: 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: ApplicationFiled: December 30, 2021Publication date: July 6, 2023Inventors: Sheng Chi LIN, Feng-cheng CHANG, Yu Jen LIN
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Patent number: 11592495Abstract: 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: GrantFiled: October 12, 2020Date of Patent: February 28, 2023Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Fei Xu, Wei-Xiong He, Feng-Cheng Chang
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Publication number: 20230018206Abstract: 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: ApplicationFiled: July 13, 2021Publication date: January 19, 2023Applicant: Dell Products, LPInventors: Chih-Nan Peng, Feng-Cheng Chang, Chung-An Lin
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Publication number: 20230000315Abstract: 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: ApplicationFiled: June 30, 2022Publication date: January 5, 2023Applicant: Clearmind Biomedical, Inc.Inventors: Sheng-Chi LIN, Feng-Cheng CHANG, Yu-Jen LIN
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Publication number: 20220133138Abstract: 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: ApplicationFiled: October 29, 2020Publication date: May 5, 2022Inventors: Sheng-chi Lin, Feng-cheng Chang, Yi-chen Wang
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Patent number: 11275126Abstract: 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: GrantFiled: June 25, 2020Date of Patent: March 15, 2022Assignee: REALTEK SEMICONDUCTOR CORPORATIONInventors: Feng-Cheng Chang, Xiao-Guo Zheng, Wei-Xiong He
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Patent number: 11076755Abstract: 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: GrantFiled: March 26, 2019Date of Patent: August 3, 2021Assignee: Clearmind Biomedical, Inc.Inventors: Po-Hao Huang, Feng-Cheng Chang, Sheng-Chi Lin
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Publication number: 20210116515Abstract: 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: ApplicationFiled: October 12, 2020Publication date: April 22, 2021Inventors: FEI XU, WEI-XIONG HE, FENG-CHENG CHANG
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Publication number: 20210011091Abstract: 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: ApplicationFiled: June 25, 2020Publication date: January 14, 2021Inventors: FENG-CHENG CHANG, XIAO-GUO ZHENG, WEI-XIONG HE
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Patent number: 10441153Abstract: 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: GrantFiled: April 23, 2018Date of Patent: October 15, 2019Assignee: Clearmind BioMedical, Inc.Inventors: Po-Hao Huang, Feng-Cheng Chang, Sheng-Chi Lin
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Publication number: 20190239740Abstract: 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: ApplicationFiled: March 26, 2019Publication date: August 8, 2019Inventors: PO-HAO HUANG, FENG-CHENG CHANG, SHENG-CHI LIN
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Patent number: 10331597Abstract: 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: GrantFiled: December 20, 2016Date of Patent: June 25, 2019Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Bing-Juo Chuang, Feng-Cheng Chang
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Publication number: 20180235441Abstract: 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: ApplicationFiled: April 23, 2018Publication date: August 23, 2018Inventors: PO-HAO HUANG, FENG-CHENG CHANG, SHENG-CHI LIN
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Patent number: 9968249Abstract: 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: GrantFiled: November 30, 2016Date of Patent: May 15, 2018Assignee: Clearmind Biomedical, Inc.Inventors: Po-Hao Huang, Sheng-Chi Lin, Feng-Cheng Chang
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Publication number: 20180032460Abstract: 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: ApplicationFiled: December 20, 2016Publication date: February 1, 2018Inventors: BING-JUO CHUANG, FENG-CHENG CHANG
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Patent number: 9686105Abstract: 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: GrantFiled: January 12, 2016Date of Patent: June 20, 2017Assignee: REALTEK SEMICONDUCTOR CORP.Inventors: Feng-Cheng Chang, Xiao-Guo Zheng
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Publication number: 20170079520Abstract: 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: ApplicationFiled: November 30, 2016Publication date: March 23, 2017Inventors: Po-Hao Huang, Sheng-Chi Lin, Feng-Cheng Chang