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: A utilization of a defective memory device in an image processing system is provided. The present invention provides three methods for utilizing the defective memory device to serve as an image data storage device. A first method is selecting at least a block of functional memory cells to store image data. A second method is using functional memory cells to store image data while skipping through defective memory cells in accordance with a mapping table of the defective memory cells and their positions in the memory array. A third method is using the defective memory device to store image data and then re-estimating image value of a pixel corresponding to each defective memory cell by an interpolation technique.

Abstract: The present invention is a changeable means for different total tracks and its method, the means reflects a light from a light source at least twice toward predetermined directions; the means comprises plural reflection elements, at least one of the plural reflection elements is a rotational reflection element, which has plural reflection surface sets, and each reflection surface set has at least one reflection surface; a pivot axis is for each rotational reflection element circulation and changing of reflection surface sets; a fixing apparatus, which connects to a rotational reflection element for adjusting and fixing positions of the rotational reflection element.

Abstract: A method for capturing images useful in a scanning system is provided. The present method comprises performing a preview scan of a picture and then displaying the preview image of the picture on a screen. Selecting a scanning area of the preview image and simultaneously performing a first normal scan of the picture from an initial scanning position relative to the picture. When the scanned area of the first normal scan corresponds to the selected scanning area, the scan image produced by the first normal scan is displayed. Otherwise, a second normal scan of a portion of the picture that corresponds to the selected scanning area is performed to produce a final scan image.

Abstract: A structure of foldable optical path is suitable for use in an optical scanner with a CCD type or a type of non-contact imaging sensor. The structure of foldable optical path arranges a part of the optical path in a foldable packing device, thus the scanner is able to utilize normal lens with better depth of field and makes the scanner more compact for the convenience of operation and carrying.

Abstract: A focusing apparatus of an automatic document feeder, having the automatic document feeder has a scanning zone for an optical chassis to retrieve an image of a document. The focusing apparatus of automatic document feeder comprises at least one focusing chart, which is disposed at a location corresponding to the scanning zone. The focusing chart is comprised of a plurality of focus detecting elements and capable of automatic focusing by the optical chassis.

Abstract: A transparent scanning light source for a scanner. The transparent scanning light source, having both lamps and their associated transformer, is mounted on a base frame and an n-shape light-channeling board is mounted on a cover. By detaching the light-channeling board and the lamps, fabrication of the cover is simplified. The light-channeling board is divided into an illumination section, a support section on each side of the illumination section and a corner section at the junction between the illumination section and the support section. The bottom surface of the support section is capable of channeling light emitted from the lamp into the light-channeling board and out through an irradiation area underneath the illumination section. A diffuser plate is also attached to the irradiation area of the illumination section so that an evenly spread light source is produced for transparent scanning.

Abstract: A back-light module with an improved light projecting assembly for an image scanning device is disclosed. The light projecting assembly includes a light projecting window having two symmetric or asymmetric opposite edges, incorporated with the back-light module. A light guide plate is mounted in the back-light module with a shape corresponding to that of the light projecting window. Two tubular lamps with a shape corresponding to the edges of the light guide plate. Light transmitted from the tubular lamps are guided by the light guide plate for spreading over and projecting from the light guide plate onto a diffusion plate arranged under the light guide plate. The light is further distributed by a diffusion plate and projected to the optical scanning module of the scanner via the light projecting window.

Abstract: An optical system inside a scanner for scanning a document. The optical system has a carrier box, a light source, a set of light reflecting mirrors, a circuit board, a converging mirror and an optical sensor. The carrier box has a hollow interior and a receiving slot in the upper surface thereof. The light source is fixed outside the carrier box such that light emitted from a lamp and reflected back from a document is able to pass through the receiving slot into the carrier box. The set of reflecting mirrors inside the carrier box reflects the light beam towards the converging lens and focuses upon the optical sensor. The optical sensor converts intensity of the light beam into electrical signals. Image distance between the converging lens and the optical sensor are adjusted before positioning the lens and sensor on the circuit board.

Abstract: A Method to adjust the Ranging of the Modulation Transfer Function, MTF, of a Sensing System, more specifically, it provides for the preparation of a Test Chart of Modulation Transfer Function, of standard specification, and further, for the detection of the Modulation Transfer Function, MTF, for positions differing in picture depths, based on the location and size of said Test Chart, or alternatively on a variation in the thickness of the Crown Glass, whereby the acquisition of an applicable ranging of picture depth is achievable, which in turn provides a method of prompt derivation of a ranging scope of picture depths accommodating easy operation in the course of focal adjustment in workshop production of scanners.

Abstract: The present invention proposes a method of white plate correction to minimize the width of a reference white plate in an image reading system. The correction method for an image reading system includes the major steps of: providing a reference plate for a reference level correction; reading through the image of the reference plate with line-by-line scanning of a scanning line, the scanning line having a plurality of image sensors arranged inline; picking up at least one peak value of scanned image of each of the image sensors; and correcting each of the image sensors employing corresponding the at least one peak value as a reference level.

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: An optical scanner consists of a plurality of linear scanning light sources, a plurality of scattering lens boards, a plurality of linear image capturing units and a plurality of converging lens boards. The linear scanning light sources and image capturing units are laid in a staggered fashion on a circuit board to form a plane about the size of the scanning object. The scattering lens boards scatter light for the light sources to project evenly on the scanning object. The converging lens boards converge image reflecting from the scanning object to facilitate the linear image capturing units to capture the object image.

Abstract: A luminous apparatus capable of adjusting the luminance is equipped in a scanner. Before mounting the luminous apparatus in the scanner, a detective device is used for detecting luminance generated from the luminous apparatus. The luminous apparatus contains the electroluminescent elements, the branching levers, and the main lever. One end of each electroluminescent element is pivoted by a pivot while the other end is connected to one branching lever correspondingly. The main lever is connected to those branching levers. When the main lever is moved by an external force, the branching levers are moved and the electroluminescent elements synchronous rotate around their own pivots. Additionally, the positions of the main lever and the electroluminescent elements are fixed when a uniform luminance is detected.

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 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 key switch signal recognition circuit including a plurality of key switch buttons, a plurality of key switch signal output lines, and a plurality of key switch button contact areas is disclosed. Each of the key switch contact areas includes a first wire set and a second wire set. The first wire set has at least one wire, and each wire of the first wire set has one end connected to a common line and an opposite end forming an open end. The second wire set has at least one wire respectively disposed in parallel to and electrically insulated from the wire of the first wire set. The wire of the second wire set is respectively connected to a key switch signal output line.

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 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 Optic Reflection device, for application as Reflectors in the Light Track of optic installations, more specifically, as Reflector for single or multiple reflections in the scanner, apparatus of optics industry. Designed trapezoidal as opposed to rectangular or otherwise configuration pursuant to prior arts. In a preferred embodiment, the application is in the form of a reflector of single reflection to incident light beam; in another preferred embodiment, the application is in the form of reflector permissive of multiple reflections. Design pursuant to the trapezoidal optic reflector pertaining to the invention can substantially reduce space required of Light Track in an optic system, and therefore commensurably volume and weight claimed in the entire optic system, which facilitates compact design of the products and installation of other devices or utilities in the space so saved in the entire optic system.