Patents by Inventor Jen-Chih Chang

Jen-Chih 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: 20240140765
    Abstract: An overhead hoist transfer apparatus includes a rail assembly including a straight rail having an empty section, and a curved rail having a curved empty section; an engine including a first LSD having first and second wheels at two sides respectively; and a second LSD having third and fourth wheels at two sides respectively; a moving carriage driven by the engine and suspended from the rail assembly; first and second guide wheels disposed on the first LSD; third and fourth guide wheels disposed on the second LSD; and two guide boards disposed above a joining point of the straight rail and the curved rail. An elevation of the guide boards is equal to that of the guide wheels. The guide board includes a straight edge and a curved edge.
    Type: Application
    Filed: September 27, 2023
    Publication date: May 2, 2024
    Inventors: Jung-Chieh Chang, Yi-Sheng Chen, Jen-Yung Hsiao, Chia-Fu Hsiao, Wei-Qi Lao, Chen-Chih Chan, Caung-Yu Liu
  • Publication number: 20240116707
    Abstract: A powered industrial truck includes a lateral movement assembly including four sliding members and four pivotal members both on a wheeled carriage, four links having a first end pivotably secured to the sliding member and a second end pivotably secured to either end of the pivotal member, a motor shaft having two ends pivotably secured to the pivotal members respectively, a first electric motor on one frame member, and four mounts attached to the sliding members respectively; two lift assemblies including a second electric motor, a shaft having two ends rotatably secured to the sliding members respectively, two gear trains at the ends of the shaft respectively, a first gear connected to the second electric motor, a second gear on the shaft, and a first roller chain on the first and second gears; two electric attachments on the platform and being laterally moveable, each attachment. The mount has rollers.
    Type: Application
    Filed: September 21, 2023
    Publication date: April 11, 2024
    Inventors: Jung-Chieh Chang, Yi-Sheng Chen, Jen-Yung Hsiao, Chia-Fu Hsiao, Wei-Qi Lao, Chen-Chih Chan, Chung-Yu Liu
  • Patent number: 11259210
    Abstract: A method executed by a mobile communication device is provided. The method includes at least the following steps: connecting to a non-cellular network for communicating data traffic in a first channel; determining an idle timeslot ratio of the first channel used by the non-cellular network in a first period of time; and in response to the idle timeslot ratio in the first period of time being lower than a first threshold, switching the data traffic communication from the non-cellular network to a cellular network or another non-cellular network, or switching the data traffic communication from the first channel to a second channel used by the non-cellular network, or providing a notification to a user of the mobile communication device.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: February 22, 2022
    Assignee: MEDIATEK INC.
    Inventors: Jen-Chih Chang, Tsung-I Lin, Bin-Sung Liao, Xian-Ren Wu, Ko-Hsu Su
  • Patent number: 11076450
    Abstract: The invention provides method and associated user equipment for improving versatility of a cellular network in a network system. The network system may have a packet core which may include a security gateway for facilitating an unlicensed network to interwork with the packet core. The method may include: by a user equipment, accessing a multimedia subsystem via the security gateway over the cellular network, instead of the unlicensed network.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: July 27, 2021
    Assignee: MEDIATEK INC.
    Inventors: Sheng-Kai Chang, Po-Yu Liang, Jen-Chih Chang
  • Publication number: 20210219181
    Abstract: A method executed by a mobile communication device is provided. The method includes at least the following steps: connecting to a non-cellular network for communicating data traffic in a first channel; determining an idle timeslot ratio of the first channel used by the non-cellular network in a first period of time; and in response to the idle timeslot ratio in the first period of time being lower than a first threshold, switching the data traffic communication from the non-cellular network to a cellular network or another non-cellular network, or switching the data traffic communication from the first channel to a second channel used by the non-cellular network, or providing a notification to a user of the mobile communication device.
    Type: Application
    Filed: May 6, 2020
    Publication date: July 15, 2021
    Inventors: Jen-Chih CHANG, Tsung-I LIN, Bin-Sung LIAO, Xian-Ren WU, Ko-Hsu SU
  • Publication number: 20200252793
    Abstract: The invention provides method and associated user equipment for improving versatility of a cellular network in a network system. The network system may have a packet core which may include a security gateway for facilitating an unlicensed network to interwork with the packet core. The method may include: by a user equipment, accessing a multimedia subsystem via the security gateway over the cellular network, instead of the unlicensed network.
    Type: Application
    Filed: June 10, 2019
    Publication date: August 6, 2020
    Inventors: Sheng-Kai CHANG, Po-Yu LIANG, Jen-Chih CHANG
  • Publication number: 20140041734
    Abstract: A quick connector includes a socket-shaped main body, and penetrating containing holes formed around the periphery of the main body for containing a first latch element for fixing an external tool connector. The first latch element is controlled by a first control element to fix or loosen the external tool connector. The main body includes aslant penetrating U-shaped slide grooves formed above the containing holes, and each slide groove includes a second latch element pushed by a spring that is sheathed on the periphery of the main body to displace the second latch element in the slide groove and in an axial direction of the main body. The second control element is disposed above the first control element, and the first and second control elements control the latch elements respectively to execute two-stage actions of removing the connector and prevent accidents caused by a possible shootout of the connector.
    Type: Application
    Filed: August 8, 2012
    Publication date: February 13, 2014
    Applicant: SU BEI GUANG CORPORATION
    Inventor: Jen-Chih Chang
  • Patent number: 8646811
    Abstract: A quick connector includes a socket-shaped main body, and penetrating containing holes formed around the periphery of the main body for containing a first latch element for fixing an external tool connector. The first latch element is controlled by a first control element to fix or loosen the external tool connector. The main body includes aslant penetrating U-shaped slide grooves formed above the containing holes, and each slide groove includes a second latch element pushed by a spring that is sheathed on the periphery of the main body to displace the second latch element in the slide groove and in an axial direction of the main body. The second control element is disposed above the first control element, and the first and second control elements control the latch elements respectively to execute two-stage actions of removing the connector and prevent accidents caused by a possible shootout of the connector.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: February 11, 2014
    Assignee: Su Bei Guang Corporation
    Inventor: Jen-Chih Chang
  • Patent number: 8319838
    Abstract: A method for enabling an auto-focus function, an electronic device thereof, a recording medium thereof, and a computer program product using the method are provided for the electronic device having a function of capturing images. In the present method, whether the electronic device is in a static state is first detected. If the electronic device is remained in the static state for a first time period, an auto-focus function is enabled and the electronic device is switched to the focusing mode. As a result, a user no longer needs to start the auto-focus function manually, and convenience and fluency of capturing images can be increased substantially.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: November 27, 2012
    Assignee: HTC Corporation
    Inventors: Chi-Pang Chiang, Jen-Chih Chang, An-Chi Tai
  • Patent number: 8231111
    Abstract: A foam generating apparatus has a body with an inlet end at one end and an outlet end at the other end; a wind averaging piece contained in the body and adjacent to the inlet end, a buffer space being defined between the side of the wind averaging piece toward the inlet end and the inner edge of the inlet end, and the wind averaging piece being provided with a plurality of radially arranged through holes; and a porous body disposed in the body and abutting against the side of the wind averaging piece toward the outlet end, and a foam collecting chamber being defined between the porous body and the inner edge of the outlet end.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: July 31, 2012
    Assignee: Mei Thung Co., Ltd.
    Inventor: Jen-Chih Chang
  • Publication number: 20120018536
    Abstract: An improved air inlet structure of an air duster gun comprises a main body, a pressing handle, and an air valve. The main body comprises a channel, and the channel comprises an air inlet and an air outlet at both ends of the channel respectively. The air valve is disposed in the main body and controlled by the pressing handle to open and close the channel. A connection unit is disposed at an end of the inlet of the main body. A metal ring snares the peripheral of the connection unit to strengthen the structure when an air joint is secured. The present invention is provided by means of the above.
    Type: Application
    Filed: June 13, 2011
    Publication date: January 26, 2012
    Inventor: Jen-Chih CHANG
  • Publication number: 20120004900
    Abstract: A method for automatically setting language types of push-based services is applied to a client, and includes the steps of: receiving a beacon signal which indicating a push-based service; reading a language setting of the client; generating a language code according to the language setting; transmitting the language code; and receiving a push-based service information of the push-based service related to the language code.
    Type: Application
    Filed: September 6, 2010
    Publication date: January 5, 2012
    Inventors: Hsi-Kun Chen, Jen-Chih Chang
  • Publication number: 20110193245
    Abstract: A foam generating apparatus comprises a body having an inlet end at one end and an outlet end at the other end; a wind averaging piece contained in the body and adjacent to the inlet end, a buffer space being defined between the side of the wind averaging piece toward the inlet end and the inner edge of the inlet end, and the wind averaging piece being provided with a plurality of radially arranged through holes; and a porous body disposed in the body and abutting against the side of the wind averaging piece toward the outlet end, and a foam collecting chamber being defined between the porous body and the inner edge of the outlet end.
    Type: Application
    Filed: February 9, 2010
    Publication date: August 11, 2011
    Applicant: MEI THUNG CO., LTD.
    Inventor: Jen-Chih Chang
  • Patent number: 7699290
    Abstract: A connecting device includes an inner tube having a plurality of elongate holes and a plurality of oval-shaped beads are movably engaged with the elongate holes. A plurality of openings are defined in an inner surface of the inner tube and communicate with the elongate holes respectively. A valve unit is movably located in the inner tube and includes a collar which removably closes the openings. An outer tube is movably mounted to an outer surface of the inner tube. An inlet member is connected to a first end of the inner tube. A part in short axis of each of the beads protrudes beyond the opening of the inner tube so as to provide a larger contact area with the head of hose when the head of hose is inserted into the inner tube to push the collar away from the openings.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: April 20, 2010
    Inventor: Jen-Chih Chang
  • Publication number: 20100079601
    Abstract: A method for enabling an auto-focus function, an electronic device thereof, a recording medium thereof, and a computer program product using the method are provided for the electronic device having a function of capturing images. In the present method, whether the electronic device is in a static state is first detected. If the electronic device is remained in the static state for a first time period, an auto-focus function is enabled and the electronic device is switched to the focusing mode. As a result, a user no longer needs to start the auto-focus function manually, and convenience and fluency of capturing images can be increased substantially.
    Type: Application
    Filed: January 9, 2009
    Publication date: April 1, 2010
    Applicant: HTC Corporation
    Inventors: Chi-Pang Chiang, Jen-Chih Chang, An-Chi Tai
  • Publication number: 20090160807
    Abstract: A method for controlling an electronic apparatus, and an apparatus and a recording medium using the method are disclosed. The method includes: detecting a moving motion on a touch sensitive module; generating a sensing signal corresponding to the moving motion; and controlling an operation of the electronic apparatus according to the sensing signal. The step of controlling the operation of the electronic apparatus according to the sensing signal comprises: controlling the electronic apparatus to execute a first predetermined function when determining the moving motion is not terminated in a predetermined period of time according to the sensing signal; and controlling the electronic apparatus to execute a second predetermined function when determining the moving motion is terminated in the predetermined period of time according to the sensing signal.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 25, 2009
    Inventors: Jen-Chih Chang, Kuo-Chen Wu, Tsung-Yuan Ou, Hsing-Chiang Huang
  • Publication number: 20090160808
    Abstract: A method for controlling an electronic apparatus and an electronic apparatus using the method are provided. The method includes: when a first touch input and a second touch input on a touch sensitive module are detected, comparing a first parameter of the first touch input and a second parameter of the second touch input according to a first sensing signal generated from the first touch input and a second sensing signal generated from the second touch input to determine which one of the first sensing signal and the second sensing signal is employed to control an operation of the electronic apparatus.
    Type: Application
    Filed: December 15, 2008
    Publication date: June 25, 2009
    Inventors: Kuo-Chen Wu, Jen-Chih Chang, Tsung-Yuan Ou, Hsing-Chiang Huang
  • Publication number: 20090160806
    Abstract: A method for controlling an electronic apparatus, and an apparatus and a recording medium using the method are disclosed. The method includes: detecting a moving motion on a central sensitive module and a peripheral sensitive module surrounding the central sensing module to generate a central sensing signal and a peripheral sensing signal, respectively, corresponding to the moving motion; and controlling the electronic apparatus to execute a predetermined function when the moving motion is determined starting from the central sensing region according to the central sensing signal and the peripheral sensing signal.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 25, 2009
    Inventors: Kuo-Chen Wu, Jen-Chih Chang, Tsung-Yuan Ou, Hsing-Chiang Huang
  • Publication number: 20090160804
    Abstract: A method for controlling an electronic apparatus, and an apparatus and a computer program using the method are disclosed. The method includes: detecting a moving motion on a touch sensitive module to generate a sensing signal corresponding to the moving motion; and controlling an operation of the electronic apparatus according to the sensing signal. The step of controlling the operation of the electronic apparatus according to the sensing signal comprises: controlling the electronic apparatus to execute a first predetermined function when a speed of the moving motion is determined less than a threshold speed according to the sensing signal; and controlling the electronic apparatus to execute a second predetermined function different from the first predetermined function when the moving motion is determined greater than the threshold speed according to the sensing signal.
    Type: Application
    Filed: December 7, 2008
    Publication date: June 25, 2009
    Inventors: Jen-Chih Chang, Kuo-Chen Wu, Tsung-Yuan Ou, Hsing-Chiang Huang
  • Publication number: 20090050836
    Abstract: A connecting device includes an inner tube having a plurality of elongate holes and a plurality of oval-shaped beads are movably engaged with the elongate holes. A plurality of openings are defined in an inner surface of the inner tube and communicate with the elongate holes respectively. A valve unit is movably located in the inner tube and includes a collar which removably closes the openings. An outer tube is movably mounted to an outer surface of the inner tube. An inlet member is connected to a first end of the inner tube. A part in short axis of each of the beads protrudes beyond the opening of the inner tube so as to provide a larger contact area with the head of hose when the head of hose is inserted into the inner tube to push the collar away from the openings.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 26, 2009
    Inventor: Jen-Chih Chang