Electronic Shuttering Patents (Class 348/296)
  • Patent number: 7920204
    Abstract: The image capture apparatus changes a time from the commencement of the operation of the accumulation of the electrical charge to the shuttering, by the shutter blade unit, of the pixel within the image capture element by way of the reset operation in a state of retracting the shutter blade unit from the light path of the image capture element.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: April 5, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Miyanari
  • Patent number: 7911529
    Abstract: A digital camera includes at least one shutter blade in which opening and closing operations of an exposure aperture are performed using an electromagnetic actuator. The digital camera also includes an image sensor converting light from an object into image information, and an image processing circuit which stores the image information converted by the image sensor in an image memory so that the image information can be fetched and such that the image processing circuit has terminals for connecting the image processing circuit to an estimation display device. Further, the digital camera includes an exposure control circuit including a reference table controlling the amount of light exposure and at least one correction table allowing the amount of light exposure controlled by the reference table to be corrected, and includes a driving circuit driving the electromagnetic actuator according to an output signal of the exposure control circuit.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: March 22, 2011
    Assignee: Nidec Copal Corporation
    Inventors: Yusuke Ehara, Nobuaki Watanabe, Yoshiyuki Ozeki
  • Publication number: 20110063475
    Abstract: The digital still camera 1 has COD 33 with an electronic shutter for controlling an exposure amount, and a timing generator 34 and a vertical/horizontal driver 35 for driving CCD 33. Under control of a controlling unit 42, the timing generator 34 and a vertical/horizontal driver 35 generate an electronic shutter pulse signal once every time plural periods have come each for reading charge of one line from CCD 33. Power consumption can be reduced in controlling exposure using the electronic shutter.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 17, 2011
    Applicant: Casio Computer Co., Ltd.
    Inventors: Motoyuki KASHIWAGI, Takashi Itoh, Hiroyuki Nakata
  • Patent number: 7907205
    Abstract: A focus range is determined on the basis of an object distance, focal distance, and aperture value, after an autofocus operation. When SW2 is operated, an exposure is performed only during a period that a displacement of a blur in an optical-axis direction is within the focus range. If an exposure time for one exposure does not reach an exposure time to obtain an optimum exposure, a plurality of exposures are performed until a total exposure time reaches the exposure time to obtain the optimum exposure. When the plurality of exposures are performed, a plurality of images obtained are combined to generate an image with the optimum exposure.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: March 15, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kouji Okada
  • Publication number: 20110058080
    Abstract: According to one embodiment, a solid-state imaging device includes an imaging area, a vertical line drive circuit, and a control circuit. The imaging area is provided with a plurality of unit pixels arrayed like a two-dimensional matrix. Each unit pixel includes a photoelectric conversion element, a read transistor, an amplifier transistor, and a reset transistor. The vertical line drive circuit is configured to select and drive the unit pixels at a unit of row, and to set a signal storage time of the photoelectric conversion element of each driven unit pixel. The control circuit connected to the vertical line drive circuit, is configured to execute a variable control of the signal storage time at a unit of row of the unit pixel.
    Type: Application
    Filed: September 2, 2010
    Publication date: March 10, 2011
    Inventor: Yoshitaka EGAWA
  • Patent number: 7903169
    Abstract: There is disclosed a photographic device that uses an image sensor and an electronic viewfinder. When a release button is pressed halfway, an aperture value, an electronic shutter speed and a photosensitivity are decided based on the present subject brightness to provide a proper exposure value for photographing a still image. So long as the release button is kept being pressed halfway, a timing generator drives the image sensor to shoot video images at a frame rate of 20 Hz, and the aperture value decided for still image photography is fixed, whereas the electronic shutter speed and the photosensitivity are adjusted according to the subject brightness by use of an aperture-priority type video program. When the release button is pressed to the full, an exposure for a still image is done with the fixed aperture value.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: March 8, 2011
    Assignee: Fujifilm Corporation
    Inventor: Koji Kobayashi
  • Publication number: 20110050969
    Abstract: An imaging device includes: a pixel array section having an array of pixels each of which has a photoelectric converting device and outputs an electric signal according to an input photon; a sense circuit section having a plurality of sensor circuits each of which makes binary decision on whether there is a photon input to a pixel in a predetermined period upon reception of the electric signal therefrom; and a decision result IC section which integrates decision results from the sense circuits, pixel by pixel or for each group of pixels, multiple times to generate imaged data with a gradation, the decision result IC section including a count circuit which performs a count process to integrate the decision results from the sense circuits, and a memory for storing a counting result for each pixel from the count circuit, the plurality of sense circuits sharing the count circuit for integrating the decision results.
    Type: Application
    Filed: July 29, 2010
    Publication date: March 3, 2011
    Applicant: Sony Corporation
    Inventor: Toshiyuki NISHIHARA
  • Publication number: 20110043674
    Abstract: A photographing apparatus includes an imaging unit having a plurality of pixels arranged in rows and columns and that captures an image of a subject; a detector that detects a photographing condition of the subject; a mechanical shutter that moves to shield the imaging unit; an operation controller that controls movement of the mechanical shutter; and a scan controller that controls an exposure start scan of the imaging unit by applying reset signals to the pixels at a time controlled based on the photographing condition of the subject before the mechanical shutter moves to shield the imaging unit.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 24, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yasuo Takane
  • Patent number: 7893980
    Abstract: Disclosed herein is a Complementary Metal-Oxide-Silicon (CMOS) image sensor. The image sensor includes a two-dimensional pixel array composed of unit pixels, each unit pixel having a photo diode and transistors, a row decoder located at an end of the pixel array to assign row addresses, and a column decoder located at another end of the pixel array, which is erpendicular to the row decoder, to assign column addresses to corresponding pixels in rows selected by the row decoder. The row decoder allows the integration time points of the unit pixels, which are included in the pixel array, to be identical. Accordingly, the distortion of images can be prevented.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: February 22, 2011
    Assignee: Mtekvision Co., Ltd.
    Inventors: Youn Jung Lee, Jae Soon Hwang, Hun Joon Jung
  • Patent number: 7889273
    Abstract: A method for capturing multiple sets of image data with an electronic camera having a shutter and an electronic shutter for selectively allowing light to reach an image sensor comprises opening the shutter and the electronic shutter, allowing light to reach the image sensor for a first exposure time, closing the electronic shutter, reading out pixel data captured during the first exposure time, allowing light to reach the image sensor for a second exposure time, and, reading out pixel data captured during the second exposure time. The method may be used to obtain multiple differently exposed images of a scene for combination into a high dynamic range image.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: February 15, 2011
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Gregory John Ward
  • Patent number: 7889253
    Abstract: The present invention relates to a CMOS image sensor having a wide dynamic range, which permits favorable imaging even in cases where a bright portion and a dark portion exist simultaneously. The dynamic range can be widened by preventing the saturation of optical charge at a high illuminance by removing low illuminance signals due to long-time accumulation, intermediate illuminance signals due to short-time accumulation, and high illuminance signals due to ultra-short time accumulation from pixel portions of the image sensor. Further, adaptive control of the dynamic range can also be performed by dynamically changing the wide dynamic range imaging conditions that comprise a combination of different accumulation times of each of a plurality of short time accumulation signals.
    Type: Grant
    Filed: May 31, 2004
    Date of Patent: February 15, 2011
    Assignee: National University Corporation Shizuoka University
    Inventor: Shoji Kawahito
  • Publication number: 20110032403
    Abstract: A solid-state image pickup device includes a plurality of pixels and a scanning unit. Each pixel includes a photoelectric conversion element and a charge accumulation region. The scanning unit is configured to read a first signal from a charge accumulation region. The scanning unit is configured to read a second signal from the charge accumulation region. The first signal corresponds to an accumulation of signal charges during a first period, while the second signal corresponds to another accumulation of signal charges during a second period.
    Type: Application
    Filed: August 3, 2010
    Publication date: February 10, 2011
    Applicant: SONY CORPORATION
    Inventor: Keiji Mabuchi
  • Patent number: 7884867
    Abstract: A lens apparatus is disclosed which is capable of picking (taking) moving images and picking still images by using a mechanical shutter without a detector to detect the state of the mechanical shutter. The lens apparatus comprises an aperture stop, a mechanical shutter, and a lens controller which sends first information used for an electronic shutter control of the image-pickup element to an image-pickup apparatus. The first information relates to time or speed, determined according to an opening state of the aperture stop, from the start of image-pickup with the image-pickup element to the completion of closing operation of the mechanical shutter.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: February 8, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Minoru Uchiyama
  • Patent number: 7884868
    Abstract: An image capturing element having an electric shutter function of controlling exposure time for each frame includes: a photoelectric converter that has a plurality of photoelectric conversion elements arranged in a matrix each of which converts light into charge and stores the converted charge; a first reading unit that reads charge exposed for a predetermined exposure time from each pixel formed by the photoelectric conversion element in the entire exposure region of the photoelectric converter by a destructive readout method; and a second reading unit that reads charge from each pixel formed by the photoelectric conversion element in a specific region, which is a portion of the entire exposure region of the photoelectric converter, plural times by a non-destructive readout method in a period in which the first reading unit reads the charge from the entire exposure region.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: February 8, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Haruhisa Kurane
  • Publication number: 20110019045
    Abstract: An electronic image sensor with a pixel array of a plurality of active pixels is provided. Each of the active pixels includes: a photo detector, providing a sensing node for producing a signal based on an amount of light incident thereon; a storing node for storing a plurality of photo-generated charges according to the signal; a first controllable potential barrier between the sensing node and the storing node; an outputting node; and a second controllable potential barrier between the storing node and the outputting node, wherein each of the sensing node, the storing node and the sampling node is not overlapped.
    Type: Application
    Filed: July 26, 2009
    Publication date: January 27, 2011
    Inventor: Chi-Shao Lin
  • Publication number: 20110013064
    Abstract: A CMOS image sensor uses a special exposure control circuit to independently adjust the photodiode exposure (integration) time for each pixel in a pixel array to obtain non-saturated photodiode charges for each pixel. Exposure time adjustment involves extrapolating a pixel's final photodiode charge using an intermediate photodiode charge measured after a predetermined portion of an exposure frame period. If the intermediate photodiode charge is, e.g., over 50% of the photodiode's full-well capacity after half of the exposure frame period, then saturation is likely and the photodiode is reset to integrate only during the remaining time. If not, then the photodiode integrates over the allotted exposure frame period. Data indicating the length of the exposure portion is stored as analog data on the memory node of each pixel, and readout of the final photodiode charge is performed using Correlated Double Sampling (CDS) techniques.
    Type: Application
    Filed: July 15, 2010
    Publication date: January 20, 2011
    Applicant: Tower Semiconductor Ltd.
    Inventors: Assaf Lahav, Amos Fenigstein
  • Publication number: 20110007197
    Abstract: By providing dummy pixels separately from effective pixels, the total number of pixel rows is equalized with the number of horizontal sync signals included in one frame interval (which is called an “HD number”). A period during which a reset signal for an electronic shuttering operation is being supplied to an arbitrary pixel row overlaps with a period during which another pixel row is selected to perform a readout operation thereon. Thus, it is possible to suppress a variation in reset potential among effective pixels.
    Type: Application
    Filed: September 17, 2010
    Publication date: January 13, 2011
    Applicant: PANASONIC CORPORATION
    Inventor: Masayuki MASUYAMA
  • Publication number: 20110007173
    Abstract: In an amplifying type MOS sensor having a 3-transistor construction, when a frame rate is raised, an accumulation time of a frame just after the switching of a drive mode becomes short. When a gain correction is made to compensate a lack of accumulation time, a deterioration in picture quality is caused. A read out scan and a reset scan are executed in parallel in the frame before the switching of the drive mode, thereby preventing that a time period for resetting a pixel is overlapped with a time period for holding a pixel signal into a holding unit.
    Type: Application
    Filed: January 29, 2009
    Publication date: January 13, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shintaro Takenaka, Kazuhiro Sonoda, Masaru Fujimura, Tomoyuki Noda
  • Patent number: 7868938
    Abstract: An image pickup device having a photoelectric conversion unit having a plurality of photoelectric conversion elements arranged in a matrix pattern for converting exposed light into electric charges and accumulating the same and an electronic shutter function for controlling the exposure time for each frame including: a first reader for reading out electric charges exposed during a standard exposure time from respective pixels including the photoelectric conversion elements in the exposed area of the photoelectric conversion unit in a destructive read-out method; a second reader for reading out electric charges exposed during a short exposure time, which is an exposure time shorter than the standard exposure time, from the respective pixels including the photoelectric conversion elements during the same exposure period as the first reader in a nondestructive read-out method; and a saturation predictor for predicting whether or not the amounts of accumulated electric charges in the respective pixels being expos
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: January 11, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Haruhisa Kurane
  • Patent number: 7866557
    Abstract: An imaging system for use in an bar code reader for imaging a target bar code. The imaging system includes a 2D sensor array generating a series of image frames and The sensor array can be selectively operated in a rolling shutter mode of operation or a pseudo global shutter mode of operation. The imaging system further includes an imaging lens assembly to focus light from the field of view onto the sensor array and an image analysis system for analyzing the series of image frames generated by the sensor array for image brightness and, based on image brightness, operating the sensor array in a selected one of the rolling shutter mode of operation and the pseudo-global shutter mode of operation.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: January 11, 2011
    Assignee: Symbol Technologies, Inc.
    Inventors: Duanfeng He, Bradley S. Carlson
  • Publication number: 20110001859
    Abstract: According to the present invention, the imaging apparatus of the rolling shutter system first exposes/reads odd lines of an imaging sensor and then exposes/reads even lines. An image of one line is formed by sorting information of the lines, which is obtained by reading the information of the odd lines first and reading the information of the even lines later, in order of line positions. As a result, exposure start timing of adjacent odd/even lines is significantly shifted, and the exposure unevenness has a periodic stripe pattern when the exposure unevenness caused by flash emission of another person, etc. occurs on an image of one frame. Therefore, accurate detection of exposure unevenness caused by flash emission of another person in an imaging apparatus of a rolling shutter system can be achieved.
    Type: Application
    Filed: July 1, 2010
    Publication date: January 6, 2011
    Applicant: FUJIFILM CORPORATION
    Inventors: Takayuki MATSUURA, Takehiko SENBA
  • Patent number: 7864242
    Abstract: An image sensing apparatus has an image sensing element which accumulates received light as a charge, a mechanical shutter which travels to shield the image sensing element, and a scan unit which makes a scan for starting charge accumulation. The image sensing apparatus executes the scan for starting charge accumulation prior to traveling of the mechanical shutter and controls the scan for starting charge accumulation and traveling of the shutter to serve as a front curtain and a rear curtain of a shutter. Note that a scan pattern setting unit (113b) sets the scan pattern of the charge accumulation start scan based on information associated with a mounted photographing lens.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: January 4, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Namai, Hiroshi Kikuchi
  • Patent number: 7864237
    Abstract: A solid-state imaging device includes: a plurality of pixels each converting the amount of incident light into an electric signal and disposed in a plurality of columns to be deviated from the neighboring pixels in a row direction or in a column direction; a plurality of analog-to-digital converting units each converting an analog signal obtained from a corresponding pixel into a digital signal and disposed along a column in parallel; a plurality of column signal lines outputting the analog signals of the pixels of each of the plurality of pixel columns, disposed along the pixel columns, and making pairs; and a plurality of switching circuit units each selecting one column signal line of a corresponding pair of column signal lines. In the solid-state imaging device, the analog-to-digital converting units are connected to the output sides of the switching circuit units.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: January 4, 2011
    Assignee: Sony Corporation
    Inventor: Yoshinori Muramatsu
  • Publication number: 20100328507
    Abstract: A solid-state imaging device includes: a pixel area section in which plural pixels having photoelectric conversion sections, in which signal charges are accumulated, are arranged along a horizontal direction and a vertical direction; a vertical scanning unit that selects the pixels of the pixel area section in row units and reads out the signal charges from the pixels in row units; and an electronic shutter unit that supplies a reset signal set in a valid state and a transfer signal set in a valid state to the pixels in row units to reset all the pixels and, then, supplies the transfer signal set in an invalid state to the pixels in row units to release the reset of the pixels and starts accumulation of the signal charges in the pixels.
    Type: Application
    Filed: June 8, 2010
    Publication date: December 30, 2010
    Applicant: SONY CORPORATION
    Inventor: Hirofumi Kikutsugi
  • Patent number: 7852401
    Abstract: An apparatus and method that can maintain the number of photographed images obtained per second (frame rate) while ensuring sufficient exposure of a subject. The photographing apparatus and method can include an exposure portion for repeatedly performing an exposure at intervals of a predetermined unit exposure time, an image data storing portion temporarily storing unit image data generated by the exposure of the exposure portion, and an image combiner reading and combining a group of unit image data corresponding to a predetermined exposure time from the image data storing portion in synchronization with a photographing start timing of a continuous photographing period that is set in advance, to generate a combined image.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: December 14, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Toshihiro Hamamura, Toshiyuki Tanaka
  • Publication number: 20100309340
    Abstract: A CMOS image sensor or other type of image sensor includes a pixel array comprising at least first and second sets of pixels. Image sensor circuitry is coupled to the pixel array and comprises a signal generator for controlling capture of image data from the first set of pixels of the pixel array using a global shutter process and for controlling capture of image data from the second set of pixels of the pixel array using a rolling shutter process, with the pixels of the second set being different than the pixels of the first set The image sensor may be implemented in a digital camera or other type of digital imaging device.
    Type: Application
    Filed: June 3, 2009
    Publication date: December 9, 2010
    Inventors: John N. Border, John T. Compton
  • Patent number: 7847857
    Abstract: An imaging device includes a sensor that is color coded by using high-sensitivity pixels having higher sensitivity to incident light than chromatic color pixels and an automatic exposure function that allows the imaging device to control exposure according to illuminance in an imaging environment. An algorithm in the automatic exposure function that determines a reference color in a level diagram according to the illuminance uses the high-sensitivity pixels as the reference color in a low illuminance region where the gain of the sensor is set to a maximum, while using green pixels, which are the chromatic color pixels, as the reference color in a standard illuminance region where the gain of the sensor is set to a minimum.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: December 7, 2010
    Assignee: Sony Corporation
    Inventors: Shinichiro Saito, Masaaki Sato, Hirotake Cho
  • Publication number: 20100302420
    Abstract: A method and apparatus for reducing the visual discomfort of the illumination generated by imaging scanners. The method includes (1) turning on a driving current for a illumination source during each of a series of exposure periods to provide illumination directed toward a target object; (2) capturing an image from the target object with photosensitive circuitry during at least one of the exposure periods; and (3) generating a pulse-width-modulation driving current that has a duty cycle changing with time between two consecutive exposure periods for making perceived gradual illumination changes between the two consecutive exposure periods. The duty cycle decreases from the value of 100% to a minimal value after each of the exposure periods and increases from the minimal value to the value of 100% before each of the exposure periods.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 2, 2010
    Applicant: SYMBOL TECHNOLOGIES, INC.
    Inventors: Askold Strat, Thomas Boehm, Tom Lackemann, Robert Pang
  • Publication number: 20100302421
    Abstract: According to one embodiment, a solid-state imaging sensor includes an imaging area, a vertical selector circuit, a pulse selector circuit and a timing generator circuit. The vertical selector circuit is provided with one row address comparator circuit corresponding to each of pixel rows. The row address comparator circuit is supplied with a row address in time division within one horizontal scanning interval with respect to the imaging area. Based on the comparison result of the row address comparator circuit, the vertical selector circuit outputs an electronic shutter row select signal and a read row select signal for setting an electronic shutter state and a read state of the corresponding pixel row.
    Type: Application
    Filed: May 26, 2010
    Publication date: December 2, 2010
    Inventor: Teppei NAKANO
  • Patent number: 7834922
    Abstract: There is provided an image sensing apparatus.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: November 16, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Haruhisa Kurane
  • Publication number: 20100283879
    Abstract: A solid-state image pickup apparatus includes a pixel unit consisting of a plurality of pixels; a pixel control unit for controlling the plurality of pixels; a readout unit for reading a signal of each pixel output from the pixel unit; a shutter unit for establishing a state of a light incident to the pixel unit and that of shielding the pixel unit from the light; and a control unit. The control unit includes an exposure mode changeover unit for changing over an exposure mode to either a first exposure mode performing a simultaneous exposure for all pixels or a second exposure mode performing an exposure for each of a predetermined unit of pixels. The control unit controls the pixel control unit, readout unit and shutter unit according to an exposure mode changed over by the exposure mode changeover unit.
    Type: Application
    Filed: July 26, 2010
    Publication date: November 11, 2010
    Applicant: FUJITSU MICROELECTRONICS LIMITED
    Inventors: Tadao Inoue, Katsuyoshi Yamamoto
  • Patent number: 7830437
    Abstract: A pixel cell array architecture having a multiple pixel cells with shared pixel cell components. The individual pixel cell architecture increases the fill factor and the quantum efficiency for the pixel cell. The common pixel cell components may be shared by a number of pixels in the array, and may include several components that are associated with the readout of a signal from the pixel cell. Other examples of the pixel array architecture having improved fill factor for pixels in the array include an angled transfer gate and an efficiently located, shared capacitor.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: November 9, 2010
    Assignee: Aptina Imaging Corp.
    Inventors: Jeffrey A. McKee, Joey Shah
  • Patent number: 7830444
    Abstract: The present invention further improves foreign substance removal performance when removing foreign substances such as dust that adhere to the surface of an optical element disposed in front of an image sensor. The image capturing apparatus includes an image sensor that performs photo-electric conversion of an optical image of an object formed by a photographing optical system, an optical element disposed between the photographing optical system and the image sensor, a shutter disposed between the photographing optical system and the optical element and having shutter curtains capable of traveling between an open state and a closed state, a first vibration device that causes the optical element to vibrate, a second vibration device that causes the shutter curtains to vibrate, and a control device that controls operations of the first vibration device and second vibration device.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: November 9, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshio Matsumoto
  • Patent number: 7830438
    Abstract: A frame shutter apparatus comprising a controller for controlling multiple groups of pixels and for reading out values corresponding to the charge collected by different groups of pixels at different times. A method of reading out multiple groups of pixels is provided wherein values corresponding to the charge collected by one group of pixels is readout at a different time than the values corresponding to the charge collected by another group of pixels.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: November 9, 2010
    Assignee: Aptina Imaging Corporation
    Inventors: Eric R. Fossum, Sandor L. Barna
  • Patent number: 7825974
    Abstract: Each pixel includes a photo-electric converter, transfer switch, charge-voltage conversion node, amplifier, and control switch. A solid-state image sensor includes a voltage controller which controls the voltage of the charge-voltage conversion node of each pixel via the control switch of the pixel. A voltage set at the charge-voltage conversion node by the voltage controller via the control switch includes a first voltage (VD—1) for setting a pixel in a selected state, and a second voltage (VD—2) for setting the pixel in an unselected state. The voltage controller and the control switch of each pixel set the voltage of the charge-voltage conversion node of each pixel to the second voltage (VD—2) by using at least part of the horizontal scanning period.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 2, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Itano, Tomoyuki Noda
  • Patent number: 7821556
    Abstract: By providing dummy pixels separately from effective pixels, the total number of pixel rows is equalized with the number of horizontal sync signals included in one frame interval (which is called an “HD number”). A period during which a reset signal for an electronic shuttering operation is being supplied to an arbitrary pixel row overlaps with a period during which another pixel row is selected to perform a readout operation thereon. Thus, it is possible to suppress a variation in reset potential among effective pixels.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: October 26, 2010
    Assignee: Panasonic Corporation
    Inventor: Masayuki Masuyama
  • Publication number: 20100259659
    Abstract: A solid-state imaging device comprises a pixel unit, an exposure control unit, a first read-out path, and a second read-out path. In the pixel unit, a plurality of photoelectric conversion devices, in which the amount of accumulated electric charges changes in accordance with incident light, are disposed two-dimensionally. The exposure control unit controls the pixel unit such that the start and end of accumulation of electric charges are performed at the same time in the photoelectric conversion devices which belong to a plurality of rows included in the pixel unit. The first read-out path reads out captured image signals of the photoelectric conversion devices in units of one row during a unit read-out period. The second read-out path reads out reset signals of the photoelectric conversion devices which belong to the same row as the row in which the captured image signals are read out during the unit read-out period.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 14, 2010
    Applicant: OLYMPUS CORPORATION
    Inventor: Shunsuke Suzuki
  • Patent number: 7812875
    Abstract: The signal processing circuit of the present invention comprises a drive unit and a processing unit for picture signal. The drive unit supplies each of the shift pulses separately to the electronic shutter shift register and the readout shift register. The processing unit for picture signal designates a control start position of a digital picture signal outputted from an A/D converter and performs interpolation processing thereon along the horizontal direction and the vertical direction. The drive unit adjusts cycles of each of the shift pulses for controlling a vertical-line readout rate of the solid-state imaging device, and then intermittently reads out the analog picture signal from the solid-state imaging device. The processing unit for picture signal performs vertical-line interpolation processing in accordance with the vertical-line readout rate for extending a part of picture area of the digital picture signal.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: October 12, 2010
    Assignee: Panasonic Corporation
    Inventors: Kenji Takahashi, Yoshimitsu Sasaki, Toshiyuki Nakashima
  • Patent number: 7812872
    Abstract: An imaging apparatus, such as used in a digital camera or scanner, includes at least one photosensor chip. Each chip includes one line for conveying a signal causing an integration event of a selected subset of photosensors on the chip, the integration event being one of a starting or ending an integration period for the subset of photosensors. Each chip also includes at least two selection lines, for conveying a multi-bit code identifying the selected subset of photosensors for the integration event.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: October 12, 2010
    Assignee: Xerox Corporation
    Inventors: Scott L. Tewinkle, Paul A. Hosier
  • Publication number: 20100253833
    Abstract: A method for producing a digital image from pixel signals captured by an image sensor array is disclosed. The method includes: providing an image sensor array having at least two groups of pixels wherein the pixels of each group are uniformly distributed over the sensor; exposing the image sensor array to scene light and reading pixel charge from only the first group of pixels to produce a first set of pixel signals; after producing the first set of pixel signals, exposing the image sensor array, and then reading pixel charge from the second group of pixels and reading again pixels from the first group to produce a second set of pixel signals; and using the first and second sets of pixel signals to produce the digital image.
    Type: Application
    Filed: April 1, 2009
    Publication date: October 7, 2010
    Inventors: Aaron T. Deever, Bruce H. Pillman, John T. Compton, Amy D. Enge
  • Patent number: 7808534
    Abstract: Vertical and horizontal smear in images produced by a CCD imager can be compensated for by detecting the boundaries of the smear and substituting data from an alternative part of the image, or interpolated data within those boundaries. Vertical, or frame transfer, smear can also be compensated for by producing an error signal from charge accumulated during frame transfer and corresponding to one or more masked rows of the CCD imager. This error signal can be subtracted from the line signals corresponding to each row of the CCD images receiving radiation during image acquisitions. The CCD imager includes a multiplication register. The dynamic range of the imager may be extended by varying the gain of the multiplication register, for example on a line-by-line or frame-by-frame basis.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: October 5, 2010
    Assignee: E2V Technologies (UK) Limited
    Inventors: Michael John Hazelwood, Samuel Harrison Hutton, Clifford Robert Weatherup
  • Patent number: 7804536
    Abstract: CMOS image sensor with a rolling shutter that uses two separate clocks. One of the clocks is used during normal operation. When timing is changed, the other clock is started and used during an interim period to avoid distortion in the image. After that interim period, the new clock timing is coupled to the original clock circuit.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: September 28, 2010
    Assignee: Aptina Imaging Corporation
    Inventor: Daniel Van Blerkom
  • Patent number: 7800669
    Abstract: A solid-state pixel structure or pixel array includes integrated exposure control provided within the pixel structure and/or pixel array. Including exposure control within the pixel structure and/or array allows optimal exposure to be achieved in real time. Optimal exposure is achieved by measuring the response of pixel structures to received electromagnetic radiation, and using the response information, in conjunction with knowledge regarding the pixel structure capabilities and photometric thresholds, to determine when the pixel structure is operating optimally. Tight control of the exposure of the pixel structure to the electromagnetic radiation allows the pixel structure to operate optimally in order to provide an optimal captured image.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: September 21, 2010
    Assignee: R.J.S. Technology, Inc.
    Inventor: Sorin Davidovici
  • Patent number: 7796176
    Abstract: A temperature detecting unit detects a temperature of an imaging element for imaging an image signal. A storage unit stores phase change of a pulse, which is used by the imaging element when imaging the image signal, involved in temperature change of the imaging element in association with the temperature change. A timing adjustment unit checks temperature information of the imaging element detected by the temperature detecting unit with the phase change stored in the storage unit, and adjusts the phase of the pulse.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: September 14, 2010
    Assignee: Panasonic Corporation
    Inventors: Yoshiaki Mimata, Masahiro Ogawa, Mayu Ogawa, Kenji Nakamura
  • Patent number: 7791662
    Abstract: An image acquisition unit acquires multiple image data sets of pixels in array, having subject distortion due to focal plane shutter effects, corresponding to images taken at continuous exposure timings; a coefficient storage unit stores coefficients, determined by which number-in-order of multiple images that the image data set corresponds to, and by each pixel position in the image; a multiplying unit multiplies a pixel value of a predetermined pixel in the image data sets, by the coefficient stored in the coefficient storage means; and an adding unit adds each pixel value of a predetermined number of the image data sets. The coefficients include a coefficient wherein, at the earliest image data set, pixels exposed earlier are weighted less and pixels exposed later are weighted more, and a coefficient wherein, at the latest image data set, pixels exposed earlier are weighted more and pixels exposed later are weighted less.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: September 7, 2010
    Assignee: Sony Corporation
    Inventor: Shinichi Yoshimura
  • Patent number: 7787037
    Abstract: An imaging apparatus includes a pixel unit array and a driving unit. Each pixel unit includes a plurality of photoelectric conversion units, a charge-voltage converter common to the plurality of photoelectric conversion units, a plurality of transfer units which transfer electric charges generated by the plurality of photoelectric conversion units to the charge-voltage converter, an output unit which outputs a signal based on the electric charges to a signal line, and a setting unit which sets the electric potential of the charge-voltage converter. Each pixel unit is selected or deselected in accordance with the electric potential set in the charge-voltage converter. The driving unit drives the pixel unit array so that the output unit continuously outputs, to the signal line, the signal based on the electric charges generated by the plurality of photoelectric conversion units in the selected pixel unit without performing an operation of deselecting the selected pixel unit.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: August 31, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Ono, Tomoyuki Noda, Hidekazu Takahashi
  • Patent number: 7784950
    Abstract: An image projecting apparatus has an integrator for generating plural secondary-light-source images for generating illumination light with a uniform intensity; and a variable stop mechanism arranged at or near a position conjugate with the secondary-light-source images. The variable stop mechanism has a base plate having a fixed aperture; and a stop blade which moves across the aperture for changing a quantity of light. The change in the quantity of light passing through said variable stop caused by the movement of said stop blade is greater than a change in a size of an effective region of a stop aperture.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: August 31, 2010
    Assignee: Konica Minolta Opto, Inc.
    Inventor: Yasumasa Sawai
  • Patent number: 7782393
    Abstract: A method for capturing multiple sets of image data with an electronic camera having a shutter and an electronic shutter for selectively allowing light to reach an image sensor comprises opening the shutter and the electronic shutter, allowing light to reach the image sensor for a first exposure time, closing the electronic shutter, reading out pixel data captured during the first exposure time, allowing light to reach the image sensor for a second exposure time, and, reading out pixel data captured during the second exposure time. The method may be used to obtain multiple differently exposed images of a scene for combination into a high dynamic range image.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: August 24, 2010
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Gregory John Ward, Helge Seetzen
  • Patent number: 7777796
    Abstract: A solid-state image pickup apparatus includes a pixel unit consisting of a plurality of pixels; a pixel control unit for controlling the plurality of pixels; a readout unit for reading a signal of each pixel output from the pixel unit; a shutter unit for establishing a state of a light incident to the pixel unit and that of shielding the pixel unit from the light; and a control unit. The control units includes an exposure mode changeover unit for changing over an exposure mode to either a first exposure mode performing a simultaneous exposure for all pixels or a second exposure mode performing an exposure for each of a predetermined unit of pixels. The control unit controls the pixel control unit, readout unit and shutter unit according to an exposure mode changed over by the exposure mode changeover unit.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: August 17, 2010
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Tadao Inoue, Katsuyoshi Yamamoto
  • Publication number: 20100201857
    Abstract: An imaging device of the present invention includes a solid-state image sensing device; a vertical transfer drive circuit for feeding a subpulse to the solid-state image sensing device; and a control circuit, and repeats a series of photographing operations in a cycle same as or longer than a period during which the series of photographing operations are performed, the series of photographing operations including an exposure operation for exposing an imaging area after the subpulse is fed to the solid-state image sensing device to sweep out electric charges accumulated in pixels. The control circuit stops the subpulse from being fed from the vertical transfer drive circuit to the solid-state image sensing device during a period during which the exposure operation included in the series of photographing operations is not performed.
    Type: Application
    Filed: April 23, 2010
    Publication date: August 12, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Kenichi Kido