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Assignee: Avision Inc.


Location: Hsinchu, TW
No. of patents: 37

NumberTitleIssue Date
7411704Multiple-background device for a scanner and calibration device utilizing the same principle
A multiple-background device for a scanner and a calibration device utilizing the same principle are disclosed. The multiple-background device includes a shaft, a low-reflectance portion and a high-reflectance portion are formed along the length of the shaft. Thereb...
08/12/2008
7243568Transmission device capable of changing speed with stored energy
A transmission device capable of changing speed with stored energy drives a carriage to move back and forth. The transmission device includes a variable speed transmission mechanism mounted on a base and driven by a motor. A first energy storage mechanism mounted on...
07/17/2007
7240579Transmission device with switchable gear ratios
In a transmission device with switchable gear ratios, a driving gear is disposed onto an output shaft of a motor, a rocker arm is pivoted on the output shaft through an electromagnetic clutch, a rocker arm gear mounted on the rocker arm is driven by the driving gear...
07/10/2007
7240393Automatic clean device
An automatic clean device includes a base body, a transmission element, a cleaning element and an elastic member. Wherein the transmission element and the cleaning element are disposed on the base body, the elastic member has an end connected to the cleaning element...
07/10/2007
7236274Calibration mechanism for an optical module of a sheet-fed scanner
A calibration mechanism for an optical module of a sheet-fed scanner is disclosed. The calibration mechanism includes a calibration strip and a driving unit. The calibration strip is moved by the driving unit, and the calibration strip may be moved relative to the o...
06/26/2007
7190922Scan copying apparatus with a frame-cropping function
A scan copying apparatus having a frame-cropping function includes a user interface, a zone-creating unit, an optical scanning module and a processor. In a frame-cropping copy mode, a user inputs, through the user interface, a set of geometric parameters correspondi...
03/13/2007
7181088Method for constructing a Gamma table to perform Gamma correction according to the Gamma table
A method for constructing a Gamma table to perform Gamma correction according to the Gamma table. First, select (2M+1) major sampling pixel data, which divide a Gamma curve into 2M major segments. Next, obtain the maximum difference between the...
02/20/2007
7180641Combination of an optical module and a transmitting and carrying structure
A combination of an optical module and a transmitting and carrying structure includes an optical module, at least one carrying seat, and two rollers. The at least one carrying seat is combined with the optical module, for mounting the two rollers. The two rollers ar...
02/20/2007
7170649Scanning module having an adjustable height
A scanning module having an adjustable height includes a CIS module having two ends along a longitudinal direction each provided with a distance adjusting member. Thus, when the CIS module is scanning the reflective document and the transparency, the distance adjust...
01/30/2007
7158270Scanning module
A scanning module includes a contact image sensor, a movable base and an elasticity unit that is assembled between the contact image sensor and the base. When the assembly of the contact image sensor and the elasticity unit is placed under a glass window of a scanne...
01/02/2007
7141962Electrical magnetic interference test system
An EMI (Electrical Magnetic Interference) test system is provided. The system includes a testing table, a horizontal antenna, a vertical antenna and a processing unit. The testing table is used for supporting an Equipment Under Test (EUT). The horizontal antenna is ...
11/28/2006
7116845Scanner with a reference pattern for merging images and method of merging images
Using a reference pattern of the invention, discontinuous images caused by inadequate memory can be merged precisely. The reference pattern can be applied to both the flat bed scanner and the Automatic Document Feed (ADF) scanner. ...
10/03/2006
7110713Safety structure for a cover device
A safety structure for a cover device includes a base assembly and a cover assembly. The base assembly has a concave portion. The cover assembly is hinged to the base assembly and may cover the base assembly. The cover assembly has a cover body and a projection, whi...
09/19/2006
6980334Scanner with a scan-starting device
A scanner with scan-starting device comprises a housing, a carriage and a scan-starting device. The carriage is movable inside the housing whereas the scan-starting device further comprises a key section and a trigger section. Besides, the key section is situated on...
12/27/2005
6954232Method for controlling a charge-coupled device sensing module
A method for controlling a charge-coupled device (CCD) sensing module. The CCD sensing module includes photosensors divided into two sets of photosensors including a first set of photosensors and a second set of photosensors. First, the first set of photosensors and...
10/11/2005
6937369Method and apparatus for positioning a scanning starting point of an image scanning apparatus
An apparatus for positioning a scanning starting point of an image scanning apparatus includes a platen, carriage, and a number of marks. The X-Y coordinate system defined by the platen has an X-axis defined by a first wide margin of the platen and a Y-axis defined ...
08/30/2005
6880819Sheet feeder capable of immediately detecting a paper jam
A sheet feeder capable of immediately detecting a paper jam includes a housing, a motor attached to the housing, a driving roller, a driven roller, a rotation speed detector and a control circuit. The motor drives the driving roller to rotate, and the driving roller...
04/19/2005
6818878Multi-resolution charge-coupled device sensing device
A multi-resolution charge-coupled device (CCD) sensing device is provided. The multi-resolution CCD sensing device achieves the object of the invention by using more than two CCD shift registers. The purpose of the invention is to combine and store the charge signal...
11/16/2004
6816931Upstream peripheral device serving as a USB host
A scanner, which can be a USB host, includes a hub, a scanner component, a virtual printer component and an internal host. The hub is connected to a computer host and the scanner. The scanner component stores the basic setting data of the scanner, while the virtual ...
11/09/2004
6812957Image sensing module outputting color signals or monochrome signals depending on mode of operation
An image preprocessing apparatus, which processes image signals of an image of a scanned object, includes an image sensing module, a multiplexing unit and an analog signal processor. The image sensing module includes a number of monochrome image sensors, as well as ...
11/02/2004
6766139Document property detecting device
A document property detecting includes a circuit comprising a first electrode and a plurality of second electrodes, a transparent conductive substrate electrically connected to the first electrode for loading a document, and a cover with a plurality of conductive me...
07/20/2004
6760071Method of transferring charges for a CCD image-sensing device
A method of transferring charges for a CCD image-sensing device. First, the K register elements (every k register elements) are defined as a charge-combining portion, thereby providing m charge-combining portions. The y image-sensing elements sense incident light en...
07/06/2004
6753982Scanner with automatic edge detection
An improved scanner with automatic edge detection capable of quickly, accurately, and readily detecting the edges of a document or an object to be scanned. Said scanner with automatic edge detection comprises a main body, a scanning module, and an edge detector. The...
06/22/2004
6721010Method and structure for accelerating image-sensing speed of a CCD image-sensing device
The present invention discloses a method and structure for accelerating image-sensing speed in a CCD image-sensing device. According to the present invention, specific shift-control electrodes (G2j−1 and G2j) are biased to serve as a block un...
04/13/2004
6661193Stepping motor driving apparatus with dynamic torque control
A stepping motor driving apparatus with dynamic torque control includes a motor controller, a motor driver, and a frequency-to-voltage converter. In practice, the clock signals are sent to the motor driver and the frequency-to-voltage converter. When the ...
12/09/2003
6639202Multi-resolution charge-coupled device (CCD) sensing apparatus
A multi-resolution charge-coupled device (CCD) sensing apparatus is provided. The multi-resolution CCD sensing apparatus includes a photo sensor set, a shift gate, and several CCD shift registers. The shift gate includes several switches for receiving the...
10/28/2003
6601845Automatic document feeder
An ADF with simple structure includes an input tray and elastic film. The input tray is for receiving a document to be fed and the elastic film disposed upon the input tray is for supporting the document to be fed by bounce. The elastic film includes a jo...
08/05/2003
6549305Optical scanner
The invention relates to an optical scanner for saving power. The optical scanner comprises a scanning module for scanning a document to generate corresponding image signals, a cold cathode ray tube for supplying lights to the document when scanning the d...
04/15/2003
6536762Automatic document feeder capable of releasing jammed documents
An automatic document feeder (ADF) capable of releasing jammed documents has a transmission mechanism that includes a removable transmission device. The removable transmission device is moved away and thus the transmission mechanism is disconnected when n...
03/25/2003
6507418Sheet feeder scanner
A sheet feeding scanner has its contact image sensor hanging pivotally on two side walls and is capable of turning with respect to the axis of the pivots. The contact image sensor presses against a driving roller by gravity and/or by a spring. A sheet of ...
01/14/2003
6480317Scanning apparatus capable of locating the scanning starting point thereof
A scanning apparatus capable of locating a scanning starting point. The scanning apparatus includes a housing, a carriage, and a calibration paper. The housing includes a scanning platen for supporting a document to be scanned. The calibration paper is mo...
11/12/2002
6457706Paper pick-up mechanism of an automatic document feeder
The present invention includes at least one friction member module frictionally and rotatably mounted on a frame. When the friction member module is rotated, the friction between the frame and the friction member module is converted into a torque which is...
10/01/2002
6404529Dual optical module scanning mechanism
Two optical modules with reflecting mirrors provide two moving speeds so as to maintain a constant light path distance between a document and an image sensor. The slower optical has two driving wheels mounted thereon. The larger driving wheel rubs against...
06/11/2002
6398481Printer collators for collating printed papers in more than one positions
A single tray is used to collate the printed papers from a printer. The tray is moved to different positions to receive the printed papers. Thus, the printed papers are collated into different stacks. The movement of the tray can be linear or curvilinear....
06/04/2002
6335802Image reading head
An optical reader and the driving motor of a scanner are integrally mounted on a movable module, which can slide back and forth along a track to scan an image. The driving motor exerts a force on a fixed rack attached to the frame of the scanner through a...
01/01/2002
6229636Elastic support for the light source of a scanner
In the scanning optical module of a scanner, the light source module is mounted over the lens module through a spring to push the light source module against the scan window. Thus, the light source is moved closer to the document to be scanned and irradia...
05/08/2001
5751461Edge-flat image scanning system
This invention provides a flat-edge scanner capable of scanning a thick book without any distortion at the protruding binding edge. The binding edge of the book is placed at the corner of a scanning glass window and the frame supporting the glass window s...
05/12/1998
 
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