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David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 8115970 | Image reading device, image forming apparatus, and image reading method An image forming apparatus includes an image reading device which reads an image in accordance with a sheet-through method. The image reading device includes a reading device and a control device. The reading device is configured to include a carriage including an o... | 02/14/2012 |
| 8111433 | Image reading device capably scanning an image formed on a document in consideration of deterioration of the reference member An image reading device includes a reference member, a reading unit, a first reference value setting unit, a detecting unit, a second reference value setting unit, a determining unit, and a pixel value setting unit. The reading unit obtains image data and reference ... | 02/07/2012 |
| 8107132 | Image forming apparatus and control method thereof An image forming apparatus and a control method thereof are disclosed. The disclosed image forming apparatus includes a white reference sheet provided at one side of a flat bed, for scanning an object, an image sensor module including an image sensor to detect light... | 01/31/2012 |
| 8098410 | Image reading apparatus, image forming apparatus, image reading method, and image forming method During a sheet-through operation, for a first original, a shading operation is performed to acquire white data and a light-quantity measuring operation is performed to acquire a reference value. For subsequent originals, only the light-quantity measuring operation i... | 01/17/2012 |
| 8094345 | Image forming apparatus and image forming method specifying read start position of white reference plate An image forming apparatus to generate image data from an original document and to form an image includes a photoelectric conversion unit to sequentially convert an image of the original document scanned in a sub-scanning direction into image signals made of a plura... | 01/10/2012 |
| 8064105 | Image scanning device and image forming device An image scanning device including: a conveyance path which conveys originals; a first scanning means and a second scanning means which are placed such that they sandwich the conveyance path; and a white reference member used for adjusting the white levels of the sc... | 11/22/2011 |
| 8054511 | Image reading device An image reading device to read an image carried on a document, including: an image reading section to read an image carried on a document; a polygonal member, mounted to face the image reading section, and spaced from the image reading section at a predetermined di... | 11/08/2011 |
| 8054510 | Document reading method, document reader, image forming device, and image scanner A document reader comprises line sensors that are staggeredly arranged and read a white reference plate to obtain a white reference read value A, and a white reference average value AA is determined from value A for each line sensor. The line sensors read another wh... | 11/08/2011 |
| 7952770 | Image reading apparatus An image reading apparatus includes: a reading table having a transparent plate having an exposed area which constitutes a part of an outer surface of the table exposed to the exterior, and on which a document with an image thereon is placed; a document holding memb... | 05/31/2011 |
| 7813009 | Image scanning device and image forming apparatus A disclosed image scanning device includes a scanning unit configured to scan a document, and a white standard plate facing the scanning unit and configured to provide a white standard at the time of scanning the original. The white standard plate includes a guide p... | 10/12/2010 |
| 7808680 | Image forming apparatus and control method thereof An image forming apparatus including: a reflection member to reflect light at a first position spaced a predetermined distance from a scan glass; a moving unit to move the reflection member between the first position and a second position; and a control unit to gene... | 10/05/2010 |
| 7796305 | Image processing apparatus, image processing method, and program An image processing apparatus includes a first shading correction unit configured to perform shading correction for first image data by using a correction coefficient that is set for yielding an area corresponding to the luminance of a corrected trace, and a correct... | 09/14/2010 |
| 7787157 | Image reading apparatus, image reading method and image processing apparatus An image reading apparatus is disclosed. The image reading apparatus provides plural sensors and a correction unit that corrects displacement of image data caused by intervals among the plural sensors and includes a first draft reading mode whose scanning direction ... | 08/31/2010 |
| 7755803 | Image reading device and method, and an image forming apparatus and method An image reading device having plural image sensors and a reading controller is disclosed. The image reading device is for obtaining image data over a subject by joining sub-image data outputs read by the image sensors, each image sensor comprising: a signal amplifi... | 07/13/2010 |
| 7755804 | Image reading apparatus An image reading apparatus for reading an image with respect to a plurality of colors, including: a reference member; an image reading device including a plurality of light receiving elements, the image reading device reading the reference member to obtain white lev... | 07/13/2010 |
| 7755805 | Image reading apparatus, control method therefor, and program An object of this invention is to suppress a decrease in reading efficiency while preventing image degradation. To achieve this object, an image reading apparatus includes a light source which illuminates an object, a sensor which photoelectrically converts light re... | 07/13/2010 |
| 7746508 | Controller of scanning apparatus A controller of a scanning apparatus is used for controlling vertical compensation of the scanned document. The controller includes a vertical compensation circuit. By compensating the image data in the vertical direction, the scanning performance is enhanced. ... | 06/29/2010 |
| 7733537 | Scanning device and calibration mechanism thereof A scanning device includes a first chassis, a second chassis and a calibration mechanism. The first chassis is for scanning one side of a document. The second chassis is for scanning the other side of the document. The second chassis is movably disposed opposite the... | 06/08/2010 |
| 7656562 | Image reading apparatus The invention is related to an image reading apparatus which has a conveying unit which conveys an original (D), a first reading unit including a first reading section which reads one side of the original (D) conveyed by the conveying unit, a second reading unit ( | 02/02/2010 |
| 7639404 | Image scanner and image scanning method An image scanner includes a transparent plate, a scanning device, a driving device, a positioning member, a light absorbing portion and a white reference portion. The transparent plate has an original placing surface. The scanning device irradiates an original with ... | 12/29/2009 |
| 7633653 | Image reading apparatus An image reading apparatus includes a reading unit having contact glass through which an image is read from a document, backup glass located opposite the contact glass of the reading unit so as to form a conveying path between the backup glass and the contact glass ... | 12/15/2009 |
| 7616351 | Image reading device By reading an image of a reference plate, whether or not a likeliness that a linear abnormal image is occurred in the image of the document due to a foreign matter and the like attached on a contact glass exists is determined. In the case where there is the likeline... | 11/10/2009 |
| 7609419 | Image scanning apparatus and method An image scanning apparatus and method are provided in which shading data of the image scanning apparatus is acquired when manufacturing the image scanning apparatus, which is when a white reference or the shading data is cleanest. An original document is scanned us... | 10/27/2009 |
| 7586653 | Method and system for enhancing an image using luminance scaling A method for enhancing an image includes generating a luminance histogram for the image; generating a derivative histogram by taking a first derivative of the luminance histogram; searching for a plurality of black peaks and searching for a plurality of white peaks ... | 09/08/2009 |
| 7583415 | Image processing apparatus An image processing apparatus for obtaining image information by detecting, as an image signal, an electrical signal corresponding to a reflectance or transmittance of an original, including: an A/D converting circuit for converting an analog signal outputted from a... | 09/01/2009 |
| 7580161 | Method and apparatus for image processing The invention relates to an apparatus and method for image processing, which can prevent saturation of a high-density image to read the image in which gradation skip is not generated in reading information on a document. Image density is detected based on an image s... | 08/25/2009 |
| 7542177 | Image reading device and shading correcting method for the same An image reading device of the present invention reads a reference white plate before an actual document image in order to generate shading correction data. As for the first line, an input data determining circuit unconditionally determines that input data is normal... | 06/02/2009 |
| 7528996 | Scanning apparatus A scanning apparatus includes a body, a transparent plate, a scanning module, and a color reference slice. A paper-feeding track is formed within the body, and a scanning window is formed at a side wall of the paper-feeding track. A coupling groove is formed at an e... | 05/05/2009 |
| 7525692 | Method and apparatus for image reading capable of obtaining adequate white reference data for shading correction An image reading method and apparatus. A reader is mounted and reads one side of an original document being conveyed at a reading position. A contact glass includes a surface contacting the original document. A reference is disposed at a side of the contact glass op... | 04/28/2009 |
| 7525693 | Image reading apparatus and image reading method There is provided a technique that, when shading compensation is performed in an image reading apparatus, is less prone to be influenced by a smudge or the like adhered to a document glass or a white reference plate to be read by an optical reading system, and hence... | 04/28/2009 |
| 7518757 | Image reading apparatus and control program therefor There is provided an image reading apparatus that is capable increasing the detection accuracy for dust, scratches, dirt, and the like. Sixty-four lines of sampling points on a reference standard white plate are read, shading correction and averaging are carried out... | 04/14/2009 |
| 7515312 | Image scanning device and image forming device An image scanning device including: a conveyance path which conveys originals; a first scanning means and a second scanning means which are placed such that they sandwich the conveyance path; and a white reference member used for adjusting the white levels of the sc... | 04/07/2009 |
| 7466457 | Sheet-fed scanner capable of scanning multiple scan lines for image signal calibration A sheet-fed scanner capable of scanning multiple scan lines for image signal calibration includes a housing, a sheet-feeding mechanism, a first scanning module, a first actuator and a first calibration sheet. The sheet-feeding mechanism disposed in the housing feeds... | 12/16/2008 |
| 7466458 | Calibration mechanism of a scanning device A calibration mechanism of a scanning device including an assembly of a flexible member and a calibration strip and a limiting member is disclosed. The assembly of the flexible member and the calibration strip can travel in reciprocating motion, and the limiting mem... | 12/16/2008 |
| 7457006 | Calibration system for a scanner for recording images from sheets An image input scanner having two scan heads for simultaneous scanning of both sides of a sheet includes two calibration surfaces. A first calibration surface is disposed on the carriage on which a first scan head is mounted. A second calibration surface is disposed... | 11/25/2008 |
| 7444038 | Image correction apparatus and image correcting method Images at two or more correction levels are output as corrected images for a given image, and a user is allowed to select a preferred corrected image. Based on the selection result of the user, an image to be corrected which is different from the given image is corr... | 10/28/2008 |
| 7432965 | Black level correcting device and electronic camera A black level correcting device includes: an A/D converting section converting a result of subtracting a feedback signal from an input pixel signal into a pixel value to be output; and a feedback controlling section generating the feedback signal and having a holdin... | 10/07/2008 |
| 7433097 | Optical image scanner with moveable calibration target A scanner has a calibration target that can be moved in front of the scanline during a scan. This enables multiple calibrations during a scan. A full-color calibration can be performed during scanning without the need for a separate array of photosensors. Scanning c... | 10/07/2008 |
| 7432966 | Image data correcting method and imaging device A screen correction method and image pick-up device suitable for use in, for example, digital cameras. Horizontal and vertical signals from a signal generator (SG) are supplied to a semiconductor image pick-up device (CCD) via a timing generator (TG). Horizontal and... | 10/07/2008 |
| 7428078 | Movable calibration device for a sheet-fed scanner A movable calibration device for a sheet-fed scanner includes a calibration sheet and a cam. A scanning module scans an image on the calibration sheet for calibrating the sheet-fed scanner. The cam, driven by a motor, moves the calibration sheet into and out of a sc... | 09/23/2008 |
