Abstract: A scanning chassis is suited for scanning a document. The scanning chassis includes a case, a light source, at least one reflector, a lens assembly and an optical sensor. The case has a light transparent slot shaped like a bar form, wherein the widths corresponding to the points along the longitudinal direction of the light transparent slot are not all the same. The light source can illuminate the document and an image can be generated at the place where the document is illuminated by the light source. The image can be projected on the reflector through the light transparent slot. The image can be projected on the lens assembly by the reflector's reflecting the image. The image can be projected on the optical sensor after the image passes through the lens assembly.
Abstract: An optical scanning apparatus includes mechanisms for light modulation, light imaging, light deflecting, and light scanning. The light modulation mechanism includes at least one light modulation device including light modulation elements, and is configured to emit modulated light. The light modulation elements are arranged in a single-dimension formation in a first direction orthogonal to a light axis of the modulated light. The light imaging mechanism transfers the modulated light as light of an object to form an image of the object on an image screen. The light deflecting mechanism deflects the light of the object in a direction orthogonal to the first direction and the axis of the light. The light scanning mechanism is disposed on a passage of the deflected light to scan that light.
Abstract: A method and apparatus are described for image sensor optimization. According to an embodiment of the invention, a method comprises capturing an image with an image sensor, the image sensor comprising a plurality of pixels; obtaining an output relating to the image from a first pixel of the plurality of pixels; and normalizing the output from the first pixel to correlate with photon flux striking the image sensor.
Abstract: A pinhole-imaging device is used as an imaging device for an optical scanner apparatus. The pinhole-imaging device replaces the conventional lens-imaging device and is placed in front of the optical sensor to receive the imaged light from the scanning object and the optical image is focused on the optical sensor. When the radius of the aperture of pinhole-imaging device is smaller or equal to the pixel of the optical sensor, the imaged light transmitted through the aperture of the pinhole-imaging device is focused on the optical sensor to form an image such that the resolution of the optical imaging can be obtained and the light dispersion effect issue can be improved.
Abstract: A structure holds a medium itself to be scanned flat on an installation base in a stand type image input device. The installation base of the image recognition apparatus is provided with a mechanism which clips a medium and straightens creases and curls in the medium. the installation base may be provided with adhesion. Alternatively a mechanism for holding down a medium with filaments finer than the resolution of the image input device maybe provided.
January 16, 2003
Date of Patent:
August 7, 2007
Tetsuya Hori, Shuuichi Yamano, Hisao Ogata
Abstract: Provided is a drum surface scanner with which punched holes and/or cuts can be formed in a plate which has been correctly defined by position, and the plate can be clamped to a recording drum. When a plate P comes in front of movable pins 113, i.e., on a hole punch unit 4 side, the upper roller of a conveyor roller 125 moves down, and conveyor rollers 124 and 125, and conveyor belts 111 all start rotating in the positive direction. Once the plate P moves out of the range covered by a sensor PH159, the movable pins 113 follow the tail end of the plate P at a given distance therefrom. When the front end of the plate P reaches the hole punch unit 4, the movable pins 113 which have been chasing the plate P push the tail end thereof to make the front end thereof abut to the hole punch unit 4. At the same time, based on the movement amount of the movable pins 113 from their original positions to current positions pushing the tail end of the plate P, the plate P is checked for its length Y.
Abstract: A mobile telecommunications device comprising a printhead for printing a sheet of media substrate; a drive shaft for feeding the sheet of media substrate past the printhead; wherein during use, the sheet disengages from the drive shaft before completion of its printing such that the trailing edge of the sheet projects past the printhead by momentum to complete its printing.
Abstract: A method and apparatus for color measurement using a physically distributed multiplicity of sensors. Broad band illumination is provided to irradiate a test pattern. The sensors are used to measure color characteristics of discrete areas of a region of the pattern that has an intended single color by providing the pattern and sensors arrayed in a substantially matching geometric configuration.
January 23, 2001
Date of Patent:
June 5, 2007
Hewlett-Packard Development Company, L.P.
Abstract: An image reading device of the present invention includes a glass platen mounted on a support member. A rotary cam, a home position sensor and so forth allow the support member to move in reciprocation in a subscanning direction. When a document is conveyed along the glass platen, the glass platen is moved in the subscanning direction together with the support member. Consequently, a reading section and the reading position of the glass platen move relative to each other, obviating black stripes and other defects ascribable to contamination.
Abstract: An automatic document feed device having reading means for stopping a conveyed document to a reading position on a platen and sequentially reading images of two sides of the document one side by one, includes an adjusting unit, provided upstream of the reading position on the platen, for adjusting an edge of the document, wherein the adjusting unit have a function for adjusting the edge of the document which is fed to read one side, and for reversing the document through the platen and adjusting the edge of the document which is fed again to read the other side of the document. A feed unit includes one of feed guide members and a feed roller in the feed path. The feed path unit is rotatably supported, thereby enabling the feed path to open.
Abstract: An image processing apparatus including a scanner with a direct control section configured to control a scanning operation of the scanner so as to input image information from an original document and a main body configured to process the image information. The main body includes a control section configured to perform an initializing process for the main body. Further, a homing operation of the scanner is performed by the direct control section independently of the initializing process of the control section of the main body, when power is supplied to the image processing apparatus or when the image processing apparatus is returned from a shutdown state.
Abstract: A handheld mobile communications device comprising: a support structure; an antenna mounted on the support structure for transmitting and receiving radio signals; radio signal processing circuitry positioned on the support structure to process the radio signals; a speaker and microphone arrangement positioned on the support structure and operatively connected to the radio signal processing circuitry; a printhead positioned on the support structure to carry out a printing operation; and an interface for enabling interrogation of an authentication means associated with an ink cartridge.
Abstract: A digital image system is disclosed having a sensor with an elevated two-color photo-detector for sensing two different color values in combination with a single-color photo-detector for sensing a third color value. Minimal demosaicing is performed to obtain at least one luminance value at each photo-detector location. The sampled chrominance values and sampled and demosaiced luminance values are directly compressed without converting between color spaces and with minimal or no processing required. With a reduced amount of image processing prior to image compression, all of the pre-compression image processing may be performed on the image sensor itself instead of on a separate image processing system.
Abstract: An image forming apparatus has a feeder for feeding a sheet, an image forming unit for performing an image formation job so as to form an image on a sheet fed from the feeder, a controller for interrupting a current image formation job, performing an interrupt image formation job, and resuming the current image formation job after completion of the interrupt image formation job. When the current image formation job uses a sheet feeder for feeding sheets set in a predetermined order, the controller prevents the sheet feeder used in the current image formation job from being used in the interrupt image formation job.
Abstract: An imaging lens comprises a first, a second, a third, and a fourth lens group from an object toward an image. The first lens group includes a first lens that is a convex meniscus lens with a convex surface on the object side. The second lens group includes a second lens having a positive refractive power, and a third lens bonded to the second lens and having a negative refractive power. The third lens group includes a fourth lens having a negative refractive power, and a fifth lens bonded to the fourth lens and having a positive refractive power. The fourth lens group includes a sixth lens having a positive refractive power. The imaging lens satisfies the condition 0.10<D/f<0.19 where D denotes a sum of an air gap between the first lens and the second lens and an air gap between the fifth lens and the sixth lens, and f denotes a focal length of the entirety of the imaging lens with respect to an e-ray.
Abstract: A handheld mobile communications device comprising: a support structure; an antenna mounted on the support structure for transmitting and receiving radio signals; radio signal processing circuitry positioned on the support structure to process the radio signals; a speaker and microphone arrangement positioned on the support structure and operatively connected to the radio signal processing circuitry; a printhead positioned on the support structure to carry out a printing operation; a receptacle for receiving an ink cartridge containing at least one ink for supply to the printhead; printing processing circuitry positioned on the support structure, the printing processing circuitry being configured to: generate dot data; supply the dot data to the printhead; and control operation of the printhead.
Abstract: An image reading apparatus and method are provided which precisely correct shading due to dispersion of the spectral sensitivity characteristic of a reading area of a reading device. Second correction values for correcting, for each of R, G and B, shading due to partial dispersion of spectral characteristics of color separation filters are respectively set and stored for each film type and for each of a plurality of blocks forming an image, on the basis of results of reading a film for correction value setting. Then, from the stored second correction values, correction values corresponding to a type of a film which is an object of reading are retrieved to derive correction values for each pixel by interpolation. The derived correction values for each pixel are added to first correction values for correcting shading due to irregularity in the amount of light or the like.
Abstract: A method and apparatus for handling bad pixels in an image sensor array includes processing data values associated with the pixels of the image sensor. Processing the data values is performed by at least a first pass process and a subsequent pass process. In the first pass, the data values associated with the pixels are analyzed to determine whether any of the pixels are bad pixels. Information identifying the bad pixels is stored in a memory storage area of limited size. The stored information may also include an indicator, indicating a confidence level in categorizing the bad pixel. During the first pass, an overflow mark is stored in the memory storage area when insufficient memory storage is available for storing the information about a particular bad pixel. The overflow mark identifies the particular pixel in the image sensor array.
April 12, 2002
Date of Patent:
February 6, 2007
National Semiconductor Corporation
Willem Johannes Kindt, Alex Chung-Chun Lin
Abstract: This invention provides a system which can obtain the same output irrespective of a reading system by previously storing different parameters used at the image processing times for respective reading systems and performing image processing operation by selectively using one of the parameters corresponding to the reading system used even in a case where different reading systems such as a through read system and document table fixed type system are provided to read a color document.
Abstract: A handheld mobile image-sensing device comprising: a support structure; an image sensor positioned on the support structure for sensing an image; a display positioned on the support structure and operatively connected to the image sensor for displaying the image sensed by the image sensor; a printing mechanism positioned on the support structure and operatively connected to the image sensor to print the image sensed by the image sensor; a slot formed in an outer surface of the device, the slot being configured to receive print media in the form of cards to be printed on by the printing mechanism, wherein the cards have a width between 48 mm and 58 mm, and a length between 80 mm and 90 mm.