Patents Assigned to Primax Electronics Ltd.
  • Portable camera having lens assembly switching mechanism
    Patent number: 8077254
    Abstract: A portable camera having a lens assembly switching mechanism is provided. The portable camera includes a camera main body, a camera module, a slab module and a coupling structure. The camera main body has a camera opening formed in a first surface thereof. The camera module is disposed within the camera main body and includes a lens assembly exposed through the camera opening. The slab module is used for carrying one or more selective lens assemblies with different shooting angles. The coupling structure is disposed between the first surface of camera main body and the camera module. The slab module is movable with respect to the coupling structure while the slab module is parallel with the first surface of the camera main body, so that one of the selective lens assemblies is aligned with the camera opening for providing an adjustable shooting angle.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: December 13, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: Chien-Nan Yu
  • Method for using an image analysis program to analyze a plurality of images having the same image blocks
    Patent number: 8077908
    Abstract: The present invention relates to an image analysis method for analyzing an image. By inputting starting point coordinates and ending point coordinates of individual image blocks contained in the image, an image block arrangement table is created. The image is analyzed according to the image block arrangement table.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: December 13, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Chi-Jen Liao, Tung-Hsuan Pai
  • Method and system of generating high dynamic range image corresponding to specific scene
    Patent number: 8072507
    Abstract: A method of generating a high dynamic range image corresponding to a specific scene. The method includes shooting a specific scene to generate a base image; selecting a bright area and a dark area from the base image; determining base luminance according to the base image; shooting the specific scene to generate at least a first image, wherein average luminance of a part of the first image corresponding to the bright area of the base image is less than or equal to the base luminance; shooting the specific scene to generate at least a second image, wherein average luminance of a part of the second image corresponding to the dark area of the base image is greater than or equal to the base luminance; and combining at least the first image and the second image into a high dynamic range image corresponding to the specific scene.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: December 6, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Chiou-Shann Fuh, Kun-Yi Chen, Chen-Ning Hsi, Wen-Lung Chou
  • Automatic image capturing system
    Patent number: 8072495
    Abstract: An automatic image capturing system includes a computer, an image capturing device, a monitor and an automatic image capturing program. The automatic image capturing program is installed in the computer. The image capturing device is used for capturing an image of a target object. The monitor is used for displaying shooting area. If a pre-shot image of the target object is moved to be within the shooting area, the automatic image capturing program will automatically capture the image of the target object.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: December 6, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Tung-Hsuan Pai, Ying-Jieh Huang, Chih-Ping Chang
  • Text and graphic separation method and text enhancement method
    Patent number: 8068669
    Abstract: The present invention provides a text and graphic separation method and a text enhancement method. The text and graphic separation method is used for separating texts and graphics of an image and comprises coarse classification and advanced classification. The method of the present invention also adjusts the luminance of the text to enhance the text image according to the separation result.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: November 29, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Wu-Jie Liao, Meng-Yun Ying
  • Retard roller and retard roller module having such retard roller
    Patent number: 8066274
    Abstract: A retard roller of an automatic document feeder provides a frictional force to separate plural documents from each other. The retard roller can provide a first damping torque and a second damping torque with different directions. The second damping torque is smaller than the first damping torque. As such, the frictional force exerted on the document is reduced for returning the document out of the automatic document feeder. A retard roller module having such a retard roller is also provided.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: November 29, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Yi-Liang Chen, Ping-Hung Kuo, Chien-Kuo Kuan
  • ROLL SHAFT STRUCTURE
    Publication number: 20110284680
    Abstract: A roll shaft structure is provided for fixing a first roll or a second roll. The roll shaft structure includes a shaft body, a first ring and a second ring. The diameter of the shaft body is equal to the inner diameter of the first roll. The diameter of each of the first ring and the second ring is equal to the inner diameter of the second roll. When the shaft body penetrates through the first roll, the shaft body is contacted with the inner wall of the first roll, so that the first roll is fixed on the roll shaft structure. Whereas, when the shaft body penetrates through the second roll, the first ring and the second ring that are fixed on the shaft body are contacted with the inner wall of the second roll, so that the second roll is fixed on the roll shaft structure.
    Type: Application
    Filed: July 15, 2010
    Publication date: November 24, 2011
    Applicant: Primax Electronics Ltd.
    Inventor: Li Lin
  • Sheet-feeding type scanning apparatus and automatic sheet feeding method
    Patent number: 8061703
    Abstract: A sheet-feeding type scanning apparatus and an automatic sheet feeding method are provided. The sheet-feeding type scanning apparatus includes a scanning module, a first sheet input tray, a first sheet pick-up roller assembly, a sheet ejecting tray, a sheet transfer channel, a plurality of transfer roller assemblies, a sheet ejecting roller assembly, a sheet-feeding sensor and a clutch module. Once a first sheet article of multiple sheet articles placed on the first sheet input tray are fed into the internal portion of the sheet-feeding type scanning apparatus to trigger the sheet-feeding sensor, the clutch module is disabled. At this moment, a second sheet article placed on the first sheet input tray fails to be fed by the first sheet pick-up roller assembly. Therefore, the double feeding problem is solved.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: November 22, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Chung-Kai Wang, Chao-Min Yang, Wei-Hsun Hsu, Wen-An Huang
  • Wireless mouse having storing structure for storing wireless signal receiver therein
    Patent number: 8059093
    Abstract: The present invention relates to a wireless mouse having a storing structure for storing a wireless signal receiver therein. The wireless mouse includes an upper housing, a wireless signal receiver, a lower housing and a torsion spring. The lower housing has a depression structure for receiving the wireless signal receiver therein. A perforation is disposed in a sidewall of the lower housing and communicated with the depression structure. Due to the torsional force resulting from said torsion spring, the wireless signal receiver is clasped and fixed in the depression structure.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: November 15, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Hsiao-Lung Chiang, Chi-Lung Liu
  • Image data luminance compensating method and sheet-feeding scanning apparatus using such method
    Patent number: 8054507
    Abstract: The present invention relates to an image data luminance compensating method and a sheet-feeding scanning apparatus using such an image data luminance compensating method. According to the reference luminance value change of the reference background strip before and after the current document passes through the scan operating region, the luminance gain associated with compensation of the image data of the next document is determined.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: November 8, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Sheng-Ping Wang, Chang-Yung Feng
  • Method for determining luminance threshold value of video region and related apparatus
    Patent number: 8054338
    Abstract: A method for determining a luminance threshold value of a video region includes: performing a plurality of luminance threshold value generation operations on the video region included in a plurality of video frames, respectively. Each luminance threshold value generation operation includes: generating a total luminance value according to a plurality of luminance values of a plurality of pixels in the video region; subtracting a current luminance threshold value temporarily stored in a register from the total luminance value to generate a luminance error value; performing a specific filtering operation on the luminance error value to generate a filtered luminous error value; accumulating the filtered luminance error value to generate an accumulation result; and updating the current luminance value in the register according to the accumulation result and a luminance approximative value.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: November 8, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: Ting-Yuan Cheng
  • Automatic document feeder
    Patent number: 8047533
    Abstract: An automatic document feeder includes an upper cover, an input tray for placing plural documents, a pick-up module and a stopper module. A guide plate is disposed on the upper cover. The guide plate has a confining aperture. The confining aperture includes a fixing region and a releasing region. The stopper module has a stopping slice inserted into the confining aperture. When the automatic document feeder is enabled and the pick-up module is swung to be close to the input tray, the stopper module is moved from the fixing region of the confining aperture in response to the swinging action of the pick-up module. As such, the stopper module is released and the document is allowed to be fed into the internal portion of the automatic document feeder.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: November 1, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: Ping-Hung Kuo
  • Inkjet printing correction method and inkjet printing apparatus
    Patent number: 8047627
    Abstract: An inkjet printing correction method is used with an inkjet printing apparatus. The inkjet printing correction method includes the following steps. Firstly, a first test image file is printed out as a print test pattern by the inkjet printing apparatus. Then, the print test pattern is scanned to obtain a second test image file. Then, all second block intervals are compared with respective first block intervals, thereby obtaining correction interval difference data. According to the comparing results, a procedure of ejecting ink droplets from the ink nozzles is determined to be advanced or delayed.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: November 1, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: Xiang-Qing Ye
  • Wireless mouse
    Patent number: 8049725
    Abstract: The present invention relates to a wireless mouse. The wireless mouse includes a base and a slidable battery cover. The slidable battery cover is pivotally coupled to the base. After the slidable battery cover is released from the base, the slidable battery cover is firstly slid outwardly and then rotated upwardly.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: November 1, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: A-Ming Chang
  • MULTI-FUNCTION MOUSE DEVICE
    Publication number: 20110260971
    Abstract: A multi-function mouse device includes a casing with a casing upper surface and a casing lateral surface, a first button disposed on the casing upper surface, a first sensing element, a second sensing element and a controlling unit. The first sensing element is disposed on the first button. The second sensing element is disposed on the casing lateral surface. By using a first finger of a user to trigger the second sensing element and moving the user's palm, the cursor shown on a computer monitor is controllable. Moreover, by using a first finger of a user to trigger the second sensing element, using a second finger of the user to trigger the first sensing element and moving the user's palm, a preset instruction is executed.
    Type: Application
    Filed: June 16, 2010
    Publication date: October 27, 2011
    Applicant: Primax Electronics Ltd.
    Inventors: Chien-Nan Lin, Chun-Nan Su, Chin-Lung Lai, Jessica Jeng
  • Sheet pick-up device of automatic document feeder
    Patent number: 8042800
    Abstract: A sheet pick-up device of an automatic document feeder is used for feeding a sheet into a sheet feeding path. The sheet pick-up device includes a sheet pick-up module and a sustaining element. The sheet pick-up module includes a driving shaft and a sheet pick-up arm coupled to the driving shaft. The sheet pick-up arm is driven by the driving shaft to be rotated to either a standby position or a sheet feeding position. The sustaining element is pivotally coupled to the sheet pick-up arm. When a distal end of the sustaining element is rotated to be in contact with the sheet feeding path, the sheet pick-up arm stays in the standby position.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: October 25, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: Wei-Hsun Hsu
  • Laminating apparatus
    Patent number: 8037914
    Abstract: A laminating apparatus having a thickness-detecting function is provided. Before the laminating operation is done, the thickness of the article to be laminated is detected by a thickness detecting mechanism of the laminating apparatus. According to the detected thickness, the temperature or the rotating speed of the heating roller of the laminating apparatus is dynamically adjusted.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: October 18, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: Yung-Tai Pan
  • Power strip having surge protective circuit
    Patent number: 8004811
    Abstract: The present invention provides a power strip having a surge protective circuit. When a surge is inputted into the power strip, the surge is subject to two-stage suppressions so as to protect the electrical appliances which are electrically connected to the power strip. The surge protective circuit of the power strip includes a first surge protective device, a buffer conductive device and a second surge protective device. The buffer conductive device is relatively small-sized and cost-effective in comparison with the bulky inductor used in conventional power strip.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: August 23, 2011
    Assignee: Primax Electronics Ltd.
    Inventors: Kuang-Che Chen, Yi-Te Chiang
  • CLUTCH TRANSMISSION MECHANISM OF PRINTING DEVICE
    Publication number: 20110198181
    Abstract: A clutch transmission mechanism of a printing device includes a power input shaft, a power input gear, a gear-shifting arm, a first gear-shifting module and a second gear-shifting module. In the cooperation of these components and modules, the printing device can be operated in a first gear-shifting mode or a second first gear-shifting mode. When the printing device can be operated in a first gear-shifting mode or a second first gear-shifting mode, the clutch transmission mechanism coaxially transmits the driving force. As such, the stability of transmitting the driving force is enhanced.
    Type: Application
    Filed: June 21, 2010
    Publication date: August 18, 2011
    Applicant: Primax Electronics Ltd.
    Inventors: Tung-Wen Tu, Jian Zeng, Jian-Gju Yu
  • Automatic sheet-feeding scanning apparatus having movable guide rib device
    Patent number: 7999976
    Abstract: The present invention relates to an automatic sheet-feeding scanning apparatus having a movable guide rib device. The automatic sheet-feeding scanning apparatus includes a flatbed scanner and an automatic document feeder. The movable guide rib device is mounted in a housing of the flatbed scanner and includes a guide rib structure, at least one hollow portion, a plurality of elastic members and a fixing plate. The guide rib structure is movable upwardly or downwardly so as to avoid document damage even if the document is relatively large-sized.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: August 16, 2011
    Assignee: Primax Electronics Ltd.
    Inventor: Hsin-Wen Lee