Patents Assigned to Primax Electronics Ltd.
  • Patent number: 8536472
    Abstract: A rotary switch mechanism includes a first rotatable member, a second rotatable member, a push button and a triggered switch. By rotating the first rotatable member, a first rotation command is executed. By rotating the second rotatable member, a second rotation command is executed. By moving a user's finger on the push button, a motion command is executed. By pressing down the push button to trigger the push switch, a pushing command is executed. In such way, the rotary switch mechanism may be used to input plural commands.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: September 17, 2013
    Assignee: Primax Electronics Ltd.
    Inventors: Chun-Che Wu, Chun-Nan Su
  • Patent number: 8537187
    Abstract: A thermal transfer printing device includes a thermal transfer printing module and a paper ejecting module. The paper ejecting module includes a D-shaped ejecting roller, a driving gear, a switching roller, a spring, and a stopper. During a thermal transfer paper is printed by the thermal transfer printing module, the spring provides a friction force to the switching roller. In response to the friction force, the switching roller is driven by the driving gear, and the D-shaped ejecting roller is not contacted with the thermal transfer paper. After the printing task of the thermal transfer printing module is completed, the friction force provided by the spring allows the D-shaped ejecting roller to transport the thermal transfer paper.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: September 17, 2013
    Assignee: Primax Electronics Ltd.
    Inventor: Jian Zeng
  • Patent number: 8534663
    Abstract: An automatic document feeder includes a paper pick-up device, a transfer roller assembly, and a duplex feeding channel. The transfer roller assembly includes a shaft, a first roller, a second roller, a first idler, a second idler, and a power-coupling device. When the power-coupling device is connected with the shaft and the first roller for transmitting a paper, the first roller is driven to be rotated by the shaft. When the front edge of the paper is moved to the second roller, the first roller is driven to be rotated at a higher speed by the paper. Consequently, a power connection between the first roller and the shaft is released by the power-coupling device. Then, the first roller reaches a static status in order to correct the skew phenomenon of a next paper.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: September 17, 2013
    Assignee: Primax Electronics Ltd.
    Inventor: Ping-Hung Kuo
  • Patent number: 8537114
    Abstract: A mouse device is operable with a variable button-pressing force. The mouse device includes a mouse base, a mouse case, a button disposed on the mouse case, a pressing plate contacted with the button, and the sliding member contacted with the pressing plate. The sliding member is partially protruded out of the mouse base, and movable with respect to the mouse base. When the sliding member is moved to a first position and contacted with a first touching part of the pressing plate, the force required for pressing the button is equal to a first downward external force. Whereas, when the sliding member is moved to a second position and contacted with a second touching part of the pressing plate, the force required for pressing the button is equal to a second downward external force.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: September 17, 2013
    Assignee: Primax Electronics Ltd.
    Inventor: Qin-Hua Ma
  • Patent number: 8534870
    Abstract: A rotatable light source device includes an upper cover, a circuit board, plural light-emitting elements and a base. The circuit board is disposed under the upper cover, and connected with the upper cover. The light-emitting elements are mounted on the circuit board. One of the light-emitting elements is electrically connected to a power source to illuminate. The base includes a receptacle for accommodating the upper cover and the circuit board. By rotating the upper cover and the circuit board with respect to the base, another of the light-emitting elements is electrically connected to the power source to illuminate.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: September 17, 2013
    Assignee: Primax Electronics, Ltd.
    Inventor: Chun-Che Wu
  • Patent number: 8525887
    Abstract: An image pickup system includes a display screen, an image pickup device and a positioning program. The image pickup device is used for shooting a document. The display screen is used for showing a positioning mark. When the document is moved and a pre-shot document image is aligned with the positioning mark, the image pickup device is activated by the positioning program to shoot the document, thereby obtaining a document image.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: September 3, 2013
    Assignee: Primax Electronics, Ltd.
    Inventors: Sheng-Ping Wang, Tung-Hsuan Pai, Sheng-Ling Huang, Ying-Jieh Huang, Tzu-Hung Cheng
  • Patent number: 8510938
    Abstract: The present invention discloses a method for assembling a camera module. The method includes putting plural conductive bumps on a conductive contact of a substrate such that a large conductive bump is formed, and pressing the substrate and an image chip together such that the conductive contact contacts with a pad formed on the image chip through the large conductive bump to combine the conductive contact and the pad. Since there is no contact between the substrate and the image chip but the large conductive bump, the method decreases the probability for fracture between the substrate and the image chip and improves the quality of the camera module.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: August 20, 2013
    Assignee: Primax Electronics, Ltd.
    Inventors: Chien-Nan Yu, Chung-Feng Tsao, Hang-Kau Khor, Wen-Chi Shih, Ying-Chieh Chen, Yu-Hsiao Li
  • Patent number: 8515162
    Abstract: A QR code processing method includes an edge processing process, a QR code positioning process and a projection modification process. The edge processing process converts an original image into a binarized input image. The QR code positioning process includes a group search process and a tag search process. The group search process includes: deriving a plurality of luminance groups according to luminance values of pixels within an input image; identifying a plurality of finder pattern groups complying with QR code finder pattern among the plurality of luminance groups according to a central point of each luminance group; and deriving position information of each finder pattern group. The tag search process derives position information of the QR code according to the position information of the finder pattern groups. The projection modification process converts the input image into a modified image according to the position information of the QR code.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: August 20, 2013
    Assignee: Primax Electronics Ltd.
    Inventor: Ting-Yuan Cheng
  • Patent number: 8514181
    Abstract: A pressure sensitive and luminous keyboard includes at least one key, a pressure detecting circuit, an illumination module and a controlling unit. When one of the plural keys is depressed in response to a first pressure, the pressure detecting circuit generates a pressure-strength sensing voltage. According to the pressure-strength sensing voltage, the controlling unit will judge the strength of the first pressure and control the illumination module to emit either the first light beam or the second light beam.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: August 20, 2013
    Assignee: Primax Electronics Ltd.
    Inventors: Bin-Hui Huang, Chien-Ming Yang
  • Patent number: 8515705
    Abstract: A circuit board testing system and a circuit board testing system for testing a circuit board of keys. The circuit board testing system includes a computer and a test frame. The circuit board is placed on the test frame. The computer includes a script database with plural pin test scripts, a script generation program and a test program. The test program is used for searching a pin test script corresponding to the circuit board from the script database, and testing the circuit board according to the pin test script. If the pin test script is not searched from the script database by the test program, the script generation program is activated to create the pin test script.
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: August 20, 2013
    Assignee: Primax Electronics, Ltd.
    Inventor: Pei-Ming Chang
  • Patent number: 8511667
    Abstract: An automatic document feeder includes a paper pick-up device, a first roller assembly, and a second roller assembly. The first roller assembly includes a first shaft, a first roller, and a power coupling device. When the power coupling device is connected with the first shaft and the first roller for transmitting a paper, the first roller is driven to be rotated by the first shaft. When the front edge of the paper is moved to the second roller assembly, the first roller is driven to be rotated at a higher speed by the paper. Consequently, a power connection between the first roller and the first shaft is released by the power coupling device. Then, the first roller reaches a static status in order to correct the skew phenomenon of the next paper.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: August 20, 2013
    Assignee: Primax Electronics, Ltd.
    Inventor: Ping-Hung Kuo
  • Patent number: 8513549
    Abstract: An illuminated keyboard includes a main circuit board, a membrane switch circuit module and an illumination circuit board. The membrane switch circuit module includes a first connecting zone and a bus bar. Through the bus bar, the membrane switch circuit module is connected with the main circuit board. The illumination circuit board includes a second connecting zone. The second connecting zone and the first connecting zone are connected with each other. Consequently, the illumination circuit board is electrically connected with the main circuit board through the second connecting zone, the first connecting zone and the bus bar.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: August 20, 2013
    Assignee: Primax Electronics, Ltd.
    Inventor: Bo-An Chen
  • Publication number: 20130206562
    Abstract: A keyboard with a water-draining function is provided. The keyboard includes a base, an upper cover, and a flexible plate. The base has at least one drainage hole. The upper cover has at least one upper cover opening corresponding to the at least one drainage hole. The flexible plate has at least one flexible plate opening corresponding to the at least one drainage hole. The flexible plate is arranged between the upper cover and the base. The flexible plate is contacted with the upper cover and the base, so that the at least one drainage hole is connected with the corresponding upper cover opening. The liquid splashed on the keyboard may flow through the upper cover opening, the flexible plate opening and the drainage hole, and then the liquid is exhausted out of the keyboard.
    Type: Application
    Filed: April 2, 2012
    Publication date: August 15, 2013
    Applicant: Primax Electronics Ltd.
    Inventors: Chih-Wen Su, Chen-Wei Chan
  • Patent number: 8502873
    Abstract: The present invention discloses a method for image pickup and an image pickup device using the same. The image pickup device includes a lens, an image-processing program, and a user interface. The lens is utilized to obtain a main image by shooting an object. The image-processing program divides the main image into a plurality of sub-image blocks, computes the resolution of every sub-image block, and compares each resolution with a threshold. The user interface displays the compared result of each sub-image block to indicate if the lens and the object are parallel.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: August 6, 2013
    Assignee: Primax Electronics, Ltd.
    Inventors: Szu-Hao Lyu, Kuang-Che Chen
  • Patent number: 8502094
    Abstract: An illuminated keyboard includes a transparent frame plate, a key, a light source and a membrane switch circuit module. The light beam emitted by the light source is transmissible through the transparent frame plate. Consequently, the light source may be disposed on the membrane switch circuit module, between the key and the transparent frame plate, or under the transparent frame plate.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: August 6, 2013
    Assignee: Primax Electronics, Ltd.
    Inventor: Bo-An Chen
  • Patent number: 8502777
    Abstract: A mouse device with a movable button is provided. The mouse device includes a mouse body for supporting a user's palm, a first casing, and a first button covering the first casing. The first casing is connected with a body front end of the mouse body, and movable with respect to the mouse body along the body front end. As such, the position of the first button with respect to the mouse body is adjustable. According to the size of the user's palm, the position of the button is determined.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: August 6, 2013
    Assignee: Primax Electronics Ltd.
    Inventor: Chun-Che Wu
  • Patent number: 8502092
    Abstract: A rotary switch mechanism includes a hollow cylinder, a base, a push button, a first rotatable member, a second rotatable member, a first switch, a second switch and a third switch. The base is disposed under the hollow cylinder. The first rotatable member is sheathed around the hollow cylinder. The second rotatable member is sheathed around the first rotatable member. The first switch is disposed beside the first rotatable member. The second switch is disposed beside the second rotatable member. The third switch is mounted on a first circuit board, which is disposed under the base. The first rotatable member and the first switch interact with each other to generate a first rotating signal. The second rotatable member and the second switch interact with each other to generate a second rotating signal. The third switch is triggered by the pressing rod to generate a pressing signal.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: August 6, 2013
    Assignee: Primax Electronics, Ltd.
    Inventor: Kuan-Nan Chou
  • Patent number: 8500058
    Abstract: A paper roll fixing device of a printer includes a first supporting base, a second supporting base, a first fixing member and a second fixing member. The first fixing member comprises a rotatable first fixing slab. The second fixing member comprises a rotatable second fixing slab. When the first fixing slab and the first fixing slab are pushed by a paper roll, the first fixing slab and the first fixing slab are rotated to the position without stopping the paper roll from entering or leaving the space between the first supporting base and the second supporting base. As a consequently, the paper roll can be smoothly introduced into or removed from the paper roll fixing device. By the paper roll fixing device, the paper roll can be introduced into or removed from the paper roll fixing device with a single hand or in a single step.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: August 6, 2013
    Assignee: Primax Electronics Ltd.
    Inventor: Chia-Tsui Lan
  • Patent number: 8495821
    Abstract: The present invention relates to a sheet stack thickness estimating device including a driving device, a first connecting rod, a second connecting rod, a pressing part and a sensor. The driving device provides a motive force to the sheet stack thickness estimating device so as to drive the first connecting rod moved horizontally for rotating the second connecting rod, so that the pressing part presses the sheets on the paper tray. By detecting if the signal generated by the sensor is blocked by the first connecting rod, the thickness estimating device can judge if the thickness of the sheets exceeds a predetermined value.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: July 30, 2013
    Assignee: Primax Electronics, Ltd.
    Inventor: Ching-Tse Wang
  • Patent number: 8496240
    Abstract: An automatic document feeder includes an upper cover, a document pick-up module, and a conveying channel. The upper cover has a first hooking element. The document pick-up module is arranged between the upper cover and the conveying channel. In addition, the document pick-up module has a second hooking element. When the automatic document feeder is operated in a standby mode, the document pick-up module is swung to a position near the upper cover and the second hooking element is engaged with the first hooking element, so that the document pick-up module is fixed on the upper cover. Since the document pick-up module is not contacted with the document when the automatic document feeder is operated in the standby mode, the possibility of causing an erroneous action of the document pick-up module will be eliminated.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: July 30, 2013
    Assignee: Primax Electronics, Ltd.
    Inventors: Tung-Wen Tu, Long-Chao Zhao