Abstract: A charge coupled device (CCD) with multi-focus lengths is provided. The arrays of optical sensors with a plurality of transparent plates in parallel disposed thereon are disposed on a substrate. By way of either of changing the thicknesses of the transparent plates and changing the position levels of the arrays of the optical sensors, each of the arrays of the optical sensors obtains a different focal length. And thus, the depth of focus of the present charge coupled device is improved.

Abstract: The present invention provides a method and a system of display interface for an image copy machine. The system comprises a preview module for displaying previewed digital pictures. A preferred module is for storing several settings, such as resolution or brightness that are corresponding to the previewed digital pictures. A control module is for commanding the image copy machine to translate image data into an objective digital picture. The method comprises previewing multitudes of previewed pictures on a display device for the objective image. An objective picture is generated for the objective image. The corresponding objective settings are added to the corresponding previewed settings. Users can get the objective picture without knowing the corresponding settings.

Abstract: The present invention provides a mapping method and apparatus of look-up table in an imaging system. The mapping method implemented by the apparatus comprises receiving a digital signal having a high-bit portion and a low-bit portion. The high-bit portion of the digital signal is subjected to a curve table for look-up mapping to get a high-bit signal. The partial high-bit portion is subjected to a slope table for getting a factor. The low-bit portion of the digital signal is calculated with the factor to get a low-bit signal. The high-bit signal is combined with the low-bit signal to get an output signal. The curve table and slope curve can reduce the memory usage of the imaging system.

Abstract: The present invention is to provide a light source module for optical scanner, which may mainly receive the light source provided by at least one lamp. The light source module for optical scanner includes: at least one light-guiding element and a light-gathering element. The light-guiding element has a first surface and a second surface. The sectional area of the first surface is larger than that of the second surface. The first surface may receive the light of the lamp and transmit it to the second surface by the light-guiding element. The light-gathering element has a light-gathering front surface that is adjacent to the second surface. The light-gathering element is connected with the second surface. The second surface gathers the light transmitted by the light-guiding element and scatters the light uniformly by the light-gathering front surface.

Abstract: A method of reading data from a synchronous dynamic random access memory inside a scanner. The synchronous dynamic random access memory has a plurality of memory banks. A batch of random access data is stored inside any one of the memory banks and a batch of burst data capable of operating in the burst mode is stored in any other memory bank. The command for reading the random number data and the burst mode command for transmitting burst mode data are issued concurrently.

Abstract: A vibration inhibiting mechanism for a scanner including a base installed in a chassis of the scanner for resiliently biasing a roller support formed with a roller assembling portion on the top thereof; a roller being mounted on the roller assembling portion for abutting against a glass panel disposed on a top side of casing for receiving the chassis by an upward urging force exerted by the roller support, so as to prevent the chassis from vibrating along a direction perpendicular to the glass panel during the movement of the chassis and to prevent damage to or dislocation of the chassis during a drop test.

Abstract: The present invention improves the contrast of the image signal before further adjustment by the principle of superposition of the optical-transferring system. There are two ways to carry out the principle of superposition one is in space domain, the other is in frequency domain. Each of them can be implemented by the system or method of the present invention. To implement the compensation in space domain, the present invention utilize the result of scanning the correction board to compensate the optical energy scattered by the optical-transferring system. A pixel in object space can be expressed in terms of the linear combination of the corresponding pixels in image space according to the principle of superposition. Thus is obtained by extracting the coefficients of the linear combination. The pixels of desired picture in image space is multiplied by the compensation vector and the image with sharp contrast is produced by the present invention in space domain.

Abstract: An image scanning device with a switching mechanism arranged in an optical scanning module thereof for selectively scanning a reflective or transparent original document is disclosed. The optical scanning module includes a reflective optical path composed of a plurality of first group reflection mirrors and a first focusing lens and a transparent optical path composed a plurality of second group reflection mirrors and a second focusing lens. The second focusing lens of the transparent optical path is arranged at an angle with respect to the first focusing lens of the reflective optical path. An image sensing module is arranged adjacent to the light projecting outlets of the first and second focusing lens for selectively picking up the focused light beam from the first or second focusing lens.

Abstract: An adjusting mechanism for the lens set of an imaging system, which is applied to digital photo-taking system, monitoring system, and the like for precisely adjusting the lens set thereon, comprising a pivoting means located inside the imaging system for providing rotation capability to the lens set having the rotation center located at the pivoting means and close to the anchoring end of the lens set; a driving means, located inside the imaging system, for driving the lens set to rotate around the pivoting means; and a human-machine interface for facilitating the operator to control the driving means indirectly.

Abstract: A stray-light attenuating device for removing stray light from a scanner. The attenuating device includes a light source, a lens, a reflecting mirror, a light sensor, a front cover plate and a back cover plate. The light source provides a beam of light for illuminating a document on the scanner. Light from the light source impinges upon the document and reflects to the reflecting mirror. The reflecting mirror deflects the reflected light to the lens. The lens focuses the reflected light onto the optical sensor to form an image. The optical sensor at least includes a plurality of connecting leads, a sensing surface and a backside. The back cover plate having an opening thereon is used for covering the backside of the optical sensor. The front cover plate having a window thereon is used for covering the sensing surface of the optical sensor.

Abstract: Apparatus for output in combination of an image data signal and a corresponding bias signal in a linear CMOS sensor is provided. The apparatus comprises enabling circuits for enabling first switch devices of the photocells. Each first switch device is on a bypass of an access from the photocell to a second switch device and the second switch device on an access for the photocell to a common bus. A method for output in combination of an image data signal and a corresponding bias signal in a linear CMOS sensor of a scanner is provided. The method comprises providing photocells arranged in a row that each photocell has an access to a common bus controlled by a corresponding first switch device. Each photocell further has a bypass of the access controlled by a corresponding second switch device. The first switch devices are enabled by a plurality of control lines that each control line is from a corresponding AND gate that makes AND operation for a corresponding pixel select line and a common reset line.

Abstract: Apparatus for simultaneously resetting and reading-out in a linear CMOS sensor and a plurality of photocells therein is provided to comprise enabling circuits that each is for simultaneously enabling a first switch device and a second switch device. The first switch device on a bypass of an access from the photocell to the second switch device and the second switch device on a access for the photocell to a common bus. A method for simultaneously resetting and reading-out in a linear CMOS sensor of a scanner comprises providing a plurality of photocells arranged in a row. The each photocell has an access to a common bus controlled by a corresponding first switch device and has a bypass of the access controlled by a corresponding second switch device. The second switch device of the first photocell is enabled to be reset, at the same time the first switch device of the second photocell that is next to the first photocell in the row is enabled to be read-out.

Abstract: An apparatus in a linear complementary metal-oxide-semiconductor sensor for dark calibration comprises a plurality of exposure control devices used for controlling corresponding a first electrical access to a photocell and located between the corresponding photocell and in common a voltage line. In the present invention, the exposure control devices comprise on/off switches that can enable and disable the first electrical accesses. The apparatus is applied with a method for dark calibration of a scanner with a linear sensor. The method comprises disabling a plurality of electrical connections between a plurality of corresponding photocells and in common a voltage line in said linear sensor, and thereafter exposing said photocells.

Abstract: An image scanning device with a rotatable reflection mirror arranged in an optical scanning module thereof for establishing either a reflective or transparent scanning optical path is disclosed. The optical scanning module includes a first focusing lens, a second focusing lens, an image sensing module, a plurality of fixed reflective optical path mirrors, a plurality of fixed transparent optical path mirrors, and a rotatable reflection mirror. At scanning a reflective document, the rotatable reflection mirror is rotated to a first reflection position. A light beam from a first light source projects to the reflective document. The image of the reflective document is reflected by the rotatable reflection mirror and the fixed reflective optical path mirrors, and then received by the image sensing module through the first focusing lens. At scanning a transparent document, the rotatable reflection mirror is rotated to a second reflection position.

Abstract: The camera view-correction apparatus comprises at least one dividing plate located in the view finder so as to divide the view finder into several regions. Each region has a light source at the far end, so that when all the light sources are successfully observed without being shielded by the dividing plate, it indicates that the optical axis of the view finder is matched with the optical axis of the lens. Alternatively, the camera view-correction apparatus has a plurality of plates located in the view finder. The plates enclose a tunnel free space with a cross shape for the cross-sectional view. Light can pass the tunnel free space and reach the eyes. If the optical axis of the view finder is tilted, some portion of the light is shielded by the plates with respect to the tilted direction.

Abstract: A method and apparatus for speeding up the reading speed of a sequential I/O device, such as a Charge Coupled Device, is disclosed. The method involves in providing normal clocks for reading selected pixels and dummy clocks for reading unselected pixels. Since dummy clocks are faster than normal clocks, therefore the total time for processing the document can be less than using clocks of uniform speed. The apparatus of the invention comprises: a clock control device for generating two transfer pulses &phgr;1 and &phgr;2 in response to a clock cycle. The transfer pulses &phgr;1 and &phgr;2 are input to a sequential I/O device. The signal charge generated from the sequential I/O device will then output to an AND converter to be converted into digital signals. If the digital signals are marked, they will be latched. If not, they will simply be ignored.

Abstract: A scanner has a light and a scanning module for scanning light from a document and generating an image signal of the document. The scanning module has a plurality of light sensors, and a guiding lens for delivering light from the document to the light sensors. The guiding lens moves along a direction perpendicular to its own normal and may be set on at least a first position and a second position. The guiding lens is first set on the first position, and a reference picture is scanned to obtain a first reference image signal. The guiding lens is then set on the second position, and the reference picture is again scanned to obtain a second reference image signal. The guiding lens is then set to the first position or the second position, according to relative qualities of the first reference image signal and the second reference image signal.

Abstract: A motor combination system with operating method for operating as an induction motor or a stepping motor is disclosed. The disclosed system basically encompasses a switch device, an induction motor control module, and a stepping motor control module. Driving signals generated by the induction motor control module and the stepping motor control module are fed into the switch device. The induction motor control module receives a feedback signal for compensating simulation distortion when the disclosed system operates as an induction motor. The switch device is responsive to a mode selection signal to decide which driving signals being selected for driving the disclosed system for operating. In the beginning, the disclosed system operates as a stepping motor for providing torque enough for switching purpose. According to the mode selection signal, the disclosed system may switch to operate as an induction motor when the torque is large enough.

Abstract: A scanner motor acceleration method that uses a software driver and a flexible process method to enable a scanner to perform fast scanning operation without increasing motor cost or complex hardware design. Motor acceleration and deceleration may be done through software control on existing scanner hardware which do not support acceleration and deceleration function. Through positioning and speeding mechanisms of existing scanner hardware, and software which may be changed flexibly, scanner positioning function may be accurately performed without deviations.

Abstract: A method and device for measuring depth of field for scanner includes placing a slant test chart above the scanning board. Scanning the test chart to obtain image of different heights. Dividing the image to multiple zones. Mapping image histogram of each zone to get a maximum and minimum value for calculating Modulation Transfer Function (MFT). Thereby to derive a line graph for depth of field distribution range. Based on that to adjust the CCD and lens to get the optimum focus point.