Patents by Inventor Tzu-cheng Chang

Tzu-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: 20240153887
    Abstract: A semiconductor package structure includes a base having a first surface and a second surface opposite thereto, wherein the base comprises a wiring structure, a first electronic component disposed over the first surface of the base and electrically coupled to the wiring structure, a second electronic component disposed over the first surface of the base and electrically coupled to the wiring structure, wherein the first electronic component and the second electronic component are separated by a molding material, a first hole and a second hole formed on the second surface of the base, and a frame disposed over the first surface of the base, wherein the frame surrounds the first electronic component and the second electronic component.
    Type: Application
    Filed: January 4, 2024
    Publication date: May 9, 2024
    Inventors: Tzu-Hung LIN, Chia-Cheng CHANG, I-Hsuan PENG, Nai-Wei LIU
  • Publication number: 20240140742
    Abstract: A detecting method of a sheet detection device includes: generating, by a first magnetic sensing element, a first voltage signal corresponding to a magnetic element; generating, by a second magnetic sensing element, a second voltage signal corresponding to the magnetic element; determining, by a processing element, a first relative position of the magnetic element relative to the first magnetic sensing element according to the first voltage signal; determining, by the processing element, a second relative position of the magnetic element relative to the second magnetic sensing element according to the second voltage signal; determining, by the processing element, a stopping position of the magnetic element according to the first relative position and the second relative position; determining, by the processing element, a paper size of a paper abutted by a paper guide according to the stopping position. A sheet detection device is also disclosed.
    Type: Application
    Filed: December 6, 2022
    Publication date: May 2, 2024
    Inventors: Tzu-Cheng CHANG, Wei-Chun JAU
  • Patent number: 11948895
    Abstract: A semiconductor package structure includes a substrate having a wiring structure. A first semiconductor die is disposed over the substrate and is electrically coupled to the wiring structure. A second semiconductor die is disposed over the substrate and is electrically coupled to the wiring structure, wherein the first semiconductor die and the second semiconductor die are arranged side-by-side. Holes are formed on a surface of the substrate, wherein the holes are located within a projection of the first semiconductor die or the second semiconductor die on the substrate. Further, a molding material surrounds the first semiconductor die and the second semiconductor die, and surfaces of the first semiconductor die and the second semiconductor die facing away from the substrate are exposed by the molding material.
    Type: Grant
    Filed: July 4, 2022
    Date of Patent: April 2, 2024
    Assignee: MEDIATEK INC.
    Inventors: Tzu-Hung Lin, Chia-Cheng Chang, I-Hsuan Peng, Nai-Wei Liu
  • Patent number: 11762318
    Abstract: An automatic detection method for a paper size is disclosed. a plurality of mark points is set on a paperweight along a paperweight direction that is different from a feeding direction. The disclosure senses a plurality of row images combining into a scan image during a paper passing between the paperweight and an image sensor, determines an edge length of the paper based on a range of the mark points covered by the paper, and determines a paper size based on the edge length. The disclosure can effectively detect the paper size without any additional sensors.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: September 19, 2023
    Assignee: CAL-COMP ELECTRONICS & COMMUNICATIONS COMPANY LIMITED
    Inventors: Yung-Sen Cheng, Tzu-Cheng Chang
  • Publication number: 20230102783
    Abstract: An automatic detection method for a paper size is disclosed. a plurality of mark points is set on a paperweight along a paperweight direction that is different from a feeding direction. The disclosure senses a plurality of row images combining into a scan image during a paper passing between the paperweight and an image sensor, determines an edge length of the paper based on a range of the mark points covered by the paper, and determines a paper size based on the edge length. The disclosure can effectively detect the paper size without any additional sensors.
    Type: Application
    Filed: December 13, 2021
    Publication date: March 30, 2023
    Inventors: Yung-Sen CHENG, Tzu-Cheng CHANG
  • Publication number: 20230059286
    Abstract: This disclosure is directed to an automatic feeding and scanning device having a scanning module, a paper feeding module and a cleaning module. The scanning module has a carrying platen, a scanning platen, and a scanner, the carrying platen and the scanning platen are light transmissive plates, two surfaces of the scanning platen are a bottom surface and a top surface opposite to the bottom surface, the scanner is arranged corresponding to the bottom surface of the scanning platen. The cleaning module has a brush and an actuating assembly connected to the brush and driving the brush. The brush is arranged corresponding to the top surface of the scanning platen, the actuating assembly drives the brush to scrape the top surface of the scanning platen.
    Type: Application
    Filed: September 30, 2021
    Publication date: February 23, 2023
    Inventors: Zhen-Yang MA, Tzu-Cheng CHANG, Po-Chih CHANG
  • Publication number: 20230039368
    Abstract: A dual-axle linkage detection structure includes a first object, a second object, a sensor body, and a shielding element. The first object is movably connected to a base. The second object is movably connected to the first object. The sensor body is disposed on the first object and includes detecting positions. The shielding element includes a shielding part. When the second object covers the first object and the first object covers the base, the shielding part moves into the detecting position. When the second object moves away from the first object, or when the first object moves away from the base and drives the shielding element to rotate, the shielding part moves out of the detecting position.
    Type: Application
    Filed: October 25, 2021
    Publication date: February 9, 2023
    Inventors: Po-Chih CHANG, Sung-Po LIN, Tzu-Cheng CHANG
  • Patent number: 11431864
    Abstract: This disclosure is related to a duplex scanning device. The automatic document feeder includes a paper feeder body, a paper inlet and a paper outlet. The paper cassette includes an upper paper tray and a lower paper tray adjacent to the paper inlet and the paper outlet. The cassette power module includes a motor set and a transmission part. The transmission part drives the paper cassette to move on one side of the automatic document feeder to control the lower paper tray to connect with the paper inlet or the paper outlet. Therefore, the double-sided scanning of the document is completed by two-pass duplex scanning.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: August 30, 2022
    Assignee: KINPO ELECTRONICS, INC.
    Inventors: Po-Chih Chang, Sung-Po Lin, Tzu-Cheng Chang
  • Publication number: 20210387461
    Abstract: The disclosure is directed to a printer device including a printer body, a paper correction module, and a processor. The printer body has a media feed path. The printer body detects a width of the paper to output a paper size signal. The paper correction module is installed in the media feed path. The paper correction module includes two paper guiding arms and an actuating mechanism. The actuating mechanism is capable of driving the two paper guiding arms to approach or move away from each other. The processor is electrically connected with the actuating mechanism. After the processor receives the paper size signal, the actuating mechanism is controlled to space the two paper guiding arms with a preset interval.
    Type: Application
    Filed: July 15, 2020
    Publication date: December 16, 2021
    Inventors: Tzu-Cheng CHANG, Hung-Huan SUNG
  • Patent number: 11126134
    Abstract: The present invention provides a multi-function printer, including a main body, a cover, and a hinge structure. The hinge structure includes a positioning component and a pivoting member. The positioning component is connected to the main body. The pivoting member is connected to the cover and is pivotally connected to the positioning component. The pivoting member is adapted to pivot to a first state so that the cover is closed on the main body and pivot to a second state so that the cover is opened from the main body. The pivoting member includes at least one positioning portion. When the pivoting member pivots to a third state between the first state and the second state, the pivoting member is positioned to the positioning component by the at least one positioning portion.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: September 21, 2021
    Assignee: Kinpo Electronics, Inc.
    Inventors: Shih-His Chiang, Tzu-Cheng Chang, Hung-Huan Sung
  • Publication number: 20210011421
    Abstract: The present invention provides a multi-function printer, including a main body, a cover, and a hinge structure. The hinge structure includes a positioning component and a pivoting member. The positioning component is connected to the main body. The pivoting member is connected to the cover and is pivotally connected to the positioning component. The pivoting member is adapted to pivot to a first state so that the cover is closed on the main body and pivot to a second state so that the cover is opened from the main body. The pivoting member includes at least one positioning portion. When the pivoting member pivots to a third state between the first state and the second state, the pivoting member is positioned to the positioning component by the at least one positioning portion.
    Type: Application
    Filed: October 4, 2019
    Publication date: January 14, 2021
    Applicant: Kinpo Electronics, Inc.
    Inventors: Shih-His Chiang, Tzu-Cheng Chang, Hung-Huan Sung
  • Patent number: 10511736
    Abstract: A document size sensing module adapted to a MFP having a transparent platform where a document is adapted to be placed is provided and includes a moving component movably disposed below the transparent platform along a first axial direction, a first sensor, a second sensor, and a control unit electrically connected to the moving component, the first sensor, and the second sensor. The first and second sensors are disposed on the moving component and arranged along a second axial direction. When the control unit drives the moving component to move along the first axial direction, and at least one of the first sensor and the second sensor senses the document, the control unit determines a length of the document according to a distance travelled by the moving component and a width of the document by the first sensor and the second sensor, so as to determine dimensions of the document.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: December 17, 2019
    Assignee: Kinpo Electronics, Inc.
    Inventors: Tzu-Cheng Chang, Hung-Huan Sung
  • Patent number: 10481540
    Abstract: A scanner cover including a first plate and a second plate is provided. The first plate has a first surface; multiple compressible and deformable elastic structures are arranged protruding on the first surface. The second plate is stacked on the first plate and the second plate has a second surface facing to the first surface, the elastic structures are contacted with the second surface, and deformation of each elastic structure is contained in the second plate while the elastic structures are compressed. While the first plate and the second plate are pressed to move close to each other, the elastic structures are compressed and a restoring force is thereby provided between the first plate and the second plate.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: November 19, 2019
    Assignee: KINPO ELECTRONICS, INC.
    Inventors: Tzu-Cheng Chang, Shih-His Chiang, Hung-Huan Sung
  • Publication number: 20180307173
    Abstract: A scanner cover including a first plate and a second plate is provided. The first plate has a first surface; multiple compressible and deformable elastic structures are arranged protruding on the first surface. The second plate is stacked on the first plate and the second plate has a second surface facing to the first surface, the elastic structures are contacted with the second surface, and deformation of each elastic structure is contained in the second plate while the elastic structures are compressed. While the first plate and the second plate are pressed to move close to each other, the elastic structures are compressed and a restoring force is thereby provided between the first plate and the second plate.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 25, 2018
    Inventors: Tzu-Cheng CHANG, Shih-His CHIANG, Hung-Huan SUNG
  • Patent number: 10046523
    Abstract: A calibration method of a delta 3D printer, wherein a vertical calibration mechanism is disposed on a vertical direction, a horizontal calibration mechanism is disposed on the horizontal direction and a printing-platform calibration mechanism is disposed under the printing-platform of the 3D printer. Before performing a new printing task, the 3D printer first controls three sliding components to move vertically and performs a calibration on the Z-Axis via the vertical calibration mechanism. Next, controls the nozzle to move horizontally and performs a calibration on X-Axis and the Y-Axis via the horizontal calibration mechanism. After the X-Axis, Y-Axis and Z-Axis are all calibrated, the 3D printer performs a tilt degree calibration on the printing-platform via the printing-platform calibration mechanism. Lastly, after performing all calibration operations, the 3D printer starts to execute the new printing task.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: August 14, 2018
    Assignees: XYZPRINTING, INC., KINPO ELECTRONICS, INC.
    Inventors: Hung-Huan Sung, Shih-His Chiang, Tzu-Cheng Chang
  • Publication number: 20180198935
    Abstract: A paper feeding module includes a main body (100). A working plane (101) is formed on an external surface of the main body (100), a slot channel (110) is defined in the main body (100), a paper inlet (111) and a paper outlet (112) are formed at respective two ends of the slot channel (110), an output roller assembly (122) is arranged at the paper outlet (112), an opening (102) communicating with one side of the slot channel (110) is defined on the working plane (101), a scanning assembly (200) is arranged in the slot channel (110) between the opening (102) and the output roller assembly (122) and is arranged opposite to the opening (102), and the scanning assembly (200) is exposed on an internal surface of the slot channel (110).
    Type: Application
    Filed: March 7, 2017
    Publication date: July 12, 2018
    Inventors: Hung-Huan SUNG, Shih-His CHIANG, Tzu-Cheng CHANG
  • Patent number: 10021259
    Abstract: A paper feeding module includes a main body (100). A working plane (101) is formed on an external surface of the main body (100), a slot channel (110) is defined in the main body (100), a paper inlet (111) and a paper outlet (112) are formed at respective two ends of the slot channel (110), an output roller assembly (122) is arranged at the paper outlet (112), an opening (102) communicating with one side of the slot channel (110) is defined on the working plane (101), a scanning assembly (200) is arranged in the slot channel (110) between the opening (102) and the output roller assembly (122) and is arranged opposite to the opening (102), and the scanning assembly (200) is exposed on an internal surface of the slot channel (110).
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: July 10, 2018
    Assignee: KINPO ELECTRONICS, INC.
    Inventors: Hung-Huan Sung, Shih-His Chiang, Tzu-Cheng Chang
  • Publication number: 20170203485
    Abstract: A delta 3D printer includes a frame, standing rods, a print head module, and connection devices. Each connection device includes a sliding seat, a link set and joint mechanisms. The joint mechanisms are coupled at two ends of the link set respectively, and each joint mechanism includes a first joint, a second joint being capable of performing a two-dimensional swing motion, and a shaft being capable of performing a rotational motion; the shaft of each joint mechanism is pivoted with the print head module and the sliding seat respectively. Therefore, the print head can be moved smoothly during the movement.
    Type: Application
    Filed: February 25, 2016
    Publication date: July 20, 2017
    Inventors: HUNG-HUAN SUNG, SHIH-HIS CHIANG, TZU-CHENG CHANG
  • Publication number: 20170144379
    Abstract: A calibration method of a delta 3D printer, wherein a vertical calibration mechanism is disposed on a vertical direction, a horizontal calibration mechanism is disposed on the horizontal direction and a printing-platform calibration mechanism is disposed under the printing-platform of the 3D printer. Before performing a new printing task, the 3D printer first controls three sliding components to move vertically and performs a calibration on the Z-Axis via the vertical calibration mechanism. Next, controls the nozzle to move horizontally and performs a calibration on X-Axis and the Y-Axis via the horizontal calibration mechanism. After the X-Axis, Y-Axis and Z-Axis are all calibrated, the 3D printer performs a tilt degree calibration on the printing-platform via the printing-platform calibration mechanism. Lastly, after performing all calibration operations, the 3D printer starts to execute the new printing task.
    Type: Application
    Filed: March 8, 2016
    Publication date: May 25, 2017
    Inventors: HUNG-HUAN SUNG, SHIH-HIS CHIANG, TZU-CHENG CHANG
  • Patent number: 8240322
    Abstract: A splash-proof umbrella structure comprises a rod passing through a slide sleeve sliding up and down along the rod. The slide sleeve is coupled to support sticks. A piece of umbrella cloth is arranged on the support sticks. The upper side of the rod has a first rod sleeve and a second rod sleeve. The first rod sleeve has first link rods coupled to the support sticks. The second rod sleeve has second link rods coupled to the first link rods. The bottom of the rod has a handle. When getting off a vehicle in rain, the user can open the umbrella in a confined space to prevent from being wetted by rainwater via sliding the slide sleeve upward to stretch the umbrella cloth bottom-up. When not in use, the umbrella cloth can be collapsed via sliding the slide sleeve toward the handle. Further, the handle can collect rainwater.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: August 14, 2012
    Inventors: Tzu-cheng Chang, Chin-Sen Hsieh, Chih-Chi Chou