Exposure Control Circuit Patents (Class 396/213)
  • Patent number: 10534240
    Abstract: An imaging control device includes a controller and an input section. The controller causes an image sensor to, during at least one first frame period, capture at least one first multiple exposure image by using a first exposure signal that contains a plurality of pulses having a plurality of pulse widths different from one another; the image sensor is configured to capture an image by making multiple exposure. The input section receives the at least one first multiple exposure image. The controller selects one pulse width from the plurality of pulse widths, based on the first multiple exposure image received by the input section and then causes the image sensor to, during a second frame period, capture the image by using a second exposure signal that contains a pulse having the selected pulse width; the second frame period follows the first frame period.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: January 14, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Iwai, Osamu Shibata, Kazuko Nishimura, Yasuo Miyake, Yoshiaki Satou
  • Patent number: 10523923
    Abstract: Apparatus for controlling a plurality of active illumination cameras to operate in a time division multiplexed operating mode to acquire images of scenes that the cameras image.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: December 31, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Abhinav Kashyap
  • Patent number: 10334158
    Abstract: A media capture device (MCD) that provides a multi-sensor, free flight camera platform with advanced learning technology to replicate the desires and skills of the purchaser/owner is provided. Advanced algorithms may uniquely enable many functions for autonomous and revolutionary photography. The device may learn about the user, the environment, and/or how to optimize a photographic experience so that compelling events may be captured and composed into efficient and emotional sharing. The device may capture better photos and videos as perceived by one's social circle of friends, and/or may greatly simplify the process of using a camera to the ultimate convenience of full autonomous operation.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: June 25, 2019
    Inventor: Robert John Gove
  • Patent number: 10203595
    Abstract: The present disclosure relates to an autofocus testing device. The autofocus testing device includes a first focusing plate; a second focusing plate; a driver configured to drive at least one of a camera and the first and second focusing plates to aim a lens of the camera at the first and second plates in turn, wherein a first distance between the first focusing plate and the camera is different from a second distance between the second focusing plate and the camera; and a controller configured to obtain status information of the driver, determine whether the lens is aimed at one of the first and second focusing plates based on the status information, and control the camera to perform an autofocus image capture operation when the lens is aimed at one of the first and second focusing plates.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: February 12, 2019
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventors: Hongming Li, Zhibin Zhou, Yi Guo
  • Patent number: 10200663
    Abstract: A flash image component acquisition unit (40) of an image processing device (31) acquires the flash image component data on the basis of first image data which is acquired by capturing an image of the object while flash light is emitted. A flash correction data acquisition unit (42) acquires flash correction data in which the difference in the luminosity of the flash image component data caused by the color of the object has been reflected. The flash luminosity correction unit (44) acquires flash image correction component data, in which the difference in the luminosity of the flash image component data caused by the color of the object has been compensated for, on the basis of the flash image component data and the flash correction data.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: February 5, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Taro Saito, Shinya Fujiwara
  • Patent number: 10037474
    Abstract: The technology disclosed relates to coordinating motion-capture of a hand by a network of motion-capture sensors having overlapping fields of view. In particular, it relates to designating a first sensor among three or more motion-capture sensors as having a master frame of reference, observing motion of a hand as it passes through overlapping fields of view of the respective motion-capture sensors, synchronizing capture of images of the hand within the overlapping fields of view by pairs of the motion-capture devices, and using the pairs of the hand images captured by the synchronized motion-capture devices to automatically calibrate the motion-capture sensors to the master frame of reference frame.
    Type: Grant
    Filed: March 15, 2014
    Date of Patent: July 31, 2018
    Assignee: Leap Motion, Inc.
    Inventor: David S. Holz
  • Patent number: 10007313
    Abstract: An electronic device allows a user to exchange a main battery in a state where an electronic device is continuously operated, even when a backup battery is a small-sized battery charger. The power supply device supplies power for driving an electronic device, and includes a first battery used as a driving power supply, a second battery used as the driving power supply when the first battery is unusable, a booster circuit that increases an output voltage of the second battery, a dummy load circuit for the booster circuit, a battery detachment detector that detects whether the first battery is detachable from the device, and a power controller that switches the driving power supply of the device to the first or second battery. The power controller activates the booster circuit and supplies output power of the booster circuit to the dummy load circuit, when the first battery is detachable.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: June 26, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Toshiro Nishimura
  • Patent number: 9854218
    Abstract: An image processing method includes receiving an image including a plurality of pixels; compensating a color temperature of at least one pixel included in the image according to a color of the at least one pixel; and outputting the image according to a result of the compensating, wherein the compensating includes: measuring a color temperature of the image; and applying a color temperature compensation value to the at least one pixel based on the measured color temperature and the color of the at least one pixel.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: December 26, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jaewon Yu, Ki-Chrl Park
  • Patent number: 9742941
    Abstract: An information processing apparatus includes a light emitting unit and a light receiving unit for receiving light output from the light emitting unit, and includes a detection unit for outputting a light reception signal indicating that the light receiving unit has received light from the light emitting unit, a driving signal output unit for outputting a driving signal to the detection unit so that the light emitting unit intermittently outputs light, a detection signal output unit for outputting, based on the output driving signal and the output light reception signal, a detection signal indicating whether an object exists between the light emitting unit and the light receiving unit, and a control unit including an interrupt port to which the output detection signal is input and for returning from a power saving state in response to the detection signal being input to the interrupt port in the power saving state.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: August 22, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichi Utsumi
  • Patent number: 9716821
    Abstract: An image pickup apparatus includes a light receiving element configured to photoelectrically convert an optical image to output a pair of image signals, a selection unit configured to select a focus detection region from among a plurality of focus detection regions, and a calculation unit configured to calculate a defocus amount based on the image signals from the selected focus detection region and a correction value for the selected focus detection region, and the correction value varies depending on the plurality of focus detection regions.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: July 25, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideaki Yamamoto
  • Patent number: 9674423
    Abstract: Surveying apparatus such as, for example, a video theodolite or video tachymeter, is disclosed. In some embodiments, the surveying apparatus may include a base, a support pivotable about a first axis relative to the base, a targeting unit pivotable about a second axis relative to the support and comprising a telescope optical unit comprising at least one objective and a motorized-adjustable focusing optical unit and also an eyepiece and/or a camera chip for recording an image through the objective, goniometers for measuring pivoting positions of the support and the targeting unit, an electro-optical distance measuring device, an evaluation and control unit, which provides a calibrated autofocusing functionality for automatically setting the focusing optical unit in a manner dependent on a target distance measured by the distance measuring device and contains for this stored calibration coefficients with regard to focusing optical unit positions to be set in a target-distance-dependent manner.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: June 6, 2017
    Assignee: LEICA GEOSYSTEMS AG
    Inventors: Norbert Kotzur, Hans-Martin Zogg
  • Patent number: 9635270
    Abstract: A method for performing image control in an electronic device and an associated apparatus are provided, where the method may include the steps of: obtaining a specific image from a camera module of the electronic device, and obtaining a specific focus-related parameter corresponding to the specific image, wherein the specific focus-related parameter is related to focus control of the camera module; determining a specific resize parameter corresponding to the specific image according to a relationship between the specific resize parameter and the specific focus-related parameter; and performing a resize operation on the specific image according to the specific resize parameter, to control the specific image to be displayed in a quasi-scale-invariant manner.
    Type: Grant
    Filed: July 24, 2016
    Date of Patent: April 25, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chia-Ming Cheng, Po-Hao Huang, Yuan-Chung Lee
  • Patent number: 9632394
    Abstract: An image pickup device includes: a focal plane shutter including: a board including an opening; a shutter moving to open and close the opening; an actuator moving the shutter; and a detection portion detecting that the shutter passes through a predetermined position, an image pickup element which light enters through the opening; and a drive control portion that controls the actuator to move the shutter, wherein the drive control portion performs movement control to move the shutter at least until the shutter passes through the predetermined position, and performs brake control to decelerate the shutter while the shutter is moving after the shutter passes through the predetermined position.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 25, 2017
    Assignee: SEIKO PRECISION INC.
    Inventors: Chiaki Nemoto, Hiroshi Takahashi, Shoichi Tokura, Yoichi Nakano, Motoharu Sakurai
  • Patent number: 9607257
    Abstract: An electronic device and method for transmitting information on a barcode by using an infrared Light Emitting Diode (LED) are provided. The method includes transforming a displayed barcode into a binary code, and lighting ON/OFF an infrared LED according to set order based on the binary code.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: March 28, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Do-Hun Cha, Ju-Nyun Kim, Jun-Hui Lee
  • Patent number: 9591204
    Abstract: A focus detecting unit that includes a corrector configured to correct a signal output from an image sensor using a first shading correction value when the half-mirror is retreated from an optical path, and to correct the signal using a second shading correction value different from the first shading correction value when the half-mirror is inserted into the optical path, and a focus detector configured to provide a focus detection based on the signal corrected by the corrector.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: March 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Kudo
  • Patent number: 9491358
    Abstract: An imaging device according to the present disclosure includes: an axially rotatable imaging unit; a detector that detects a photographing direction of the imaging unit; a processor that performs image processing on image data generated by the imaging unit; and a controller that changes a setting method of an image processing parameter depending on the photographing direction detected by the detector, the image processing parameter being given to the image data by the processor.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: November 8, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yukitaka Tsuchida, Yoshihiro Tomikura, Masahiro Yamada, Nao Kataoka
  • Patent number: 9479702
    Abstract: Provided are photographing apparatuses and methods of controlling the same. The photographing apparatuses may set an auto-focusing (AF) region according to a touch, a drag, and a touch release on a touchscreen, thereby making it possible to prevent the AF region from being easily shifted by an unintended touch of a user.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: October 25, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-su Kim
  • Patent number: 9456144
    Abstract: A determination unit determines exposure control values for a light emission shooting operation and a non-light emission shooting operation based on information acquired by an acquisition unit about a brightness of an object a preliminary light emission is performed by the light emitting device.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: September 27, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yasuyoshi Miyazaki
  • Patent number: 9438794
    Abstract: A method for coordinated adjustment of a first image captured by a first camera and a second image captured by a second camera includes determining a first set of image processing parameters from the first image and a second set of image processing parameters from the second image, transmitting the first set of image processing parameters to a master, the master not being the first camera; combining at least the first and second sets of processing parameters into a combined or composite set of parameters; transmitting the composite parameters from the master to the first camera; and using a processor of the first camera to apply the composite parameters to the first image, and a processor of the second camera to apply composite parameters to the second image. An apparatus has at least two cameras configured to implement the method.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: September 6, 2016
    Assignee: Omnivision Technologies, Inc.
    Inventor: Gabor Mikes
  • Patent number: 9202278
    Abstract: Robust techniques for self-calibration of a moving camera observing a planar scene. Plane-based self-calibration techniques may take as input the homographies between images estimated from point correspondences and provide an estimate of the focal lengths of all the cameras. A plane-based self-calibration technique may be based on the enumeration of the inherently bounded space of the focal lengths. Each sample of the search space defines a plane in the 3D space and in turn produces a tentative Euclidean reconstruction of all the cameras that is then scored. The sample with the best score is chosen and the final focal lengths and camera motions are computed. Variations on this technique handle both constant focal length cases and varying focal length cases.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: December 1, 2015
    Assignee: Adobe Systems Incorporated
    Inventors: Hailin Jin, Zihan Zhou
  • Patent number: 9122125
    Abstract: An exposure control value is calculated based on a first photometric value calculated based on first image data read out from an image sensor and a second photometric value calculated based on second image data read out from the image sensor, and wherein the first image data is obtained without or with adding pixel signals and the second image data is obtained by adding a number of pixel signals larger than pixel the number of signals added to obtain the first image data.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: September 1, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yosuke Mine
  • Patent number: 8886298
    Abstract: A small wearable recall device is provided to capture images triggered by a combination of a detection of a capture condition (e.g., changes in motion, temperature or light level) followed by a relatively stable period, as detected by an accelerometer. By triggering on the combination of a detected capture condition followed by a detected stability condition, a clearer image of the environment of an interesting event is expected to be captured. The small size of the recall device makes it possible to integrate it into common portable consumer products, such as MP3 players, purses, clothing, hats, backpacks, necklaces, collars, and other human-wearable products.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: November 11, 2014
    Assignee: Microsoft Corporation
    Inventors: Lyndsay Williams, Kenneth Robert Wood, Kevin Michael Schofield
  • Patent number: 8837933
    Abstract: A shutter control device that uses an imaging device provided in a camera body to operate a shutter housed in a lens barrel to perform photography. The shutter control device comprises a communication port and a shutter control unit. The communication port is provided for transmitting and receiving signals between the camera body and the lens barrel. The shutter control unit is provided in the camera body, and outputs a shutter control signal to operate the shutter. The shutter control signal is transmitted to the lens barrel through the communication port.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: September 16, 2014
    Assignee: Pentax Ricoh Imaging Company, Ltd.
    Inventor: Masayuki Kamimura
  • Patent number: 8818184
    Abstract: When a exposure controlling unit changes an aperture value of a diaphragm in a predetermined range, the exposure controlling unit also changes a transmittance of a variable ND filter so as to perform an exposure control and, after obtaining a proper exposure by changing both the aperture value and the transmittance, sets the aperture value after exposure control to Fa, and in a case where the aperture value at which a maximum resolving power is obtained is set to Fb, when a condition, Fa?Fb, is satisfied and the transmittance is neither the minimum nor the maximum, the exposure controlling unit brings the aperture value close to Fb and changes the transmittance so as to maintain the proper exposure after the exposure control.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: August 26, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Arihiro Saita
  • Patent number: 8811810
    Abstract: A monitoring camera and an operation method thereof are provided. The monitoring camera includes a light sensor, a voltage comparing unit and a reference voltage generating unit. The light sensor senses an environment brightness of the monitoring camera and generates an induced current accordingly. The voltage comparing unit generates a sensing voltage according to the induced current and compares the sensing voltage and a reference voltage to obtain a first comparison result, so that the monitoring camera can determine whether to perform at least one of a plurality of mode switching operations according to the first comparison result. The reference voltage generating unit outputs the first reference voltage and determines whether to reduce the first reference voltage according to the first comparison result.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: August 19, 2014
    Assignee: Alpha Networks Inc.
    Inventor: Chung-Ming Lo
  • Patent number: 8678681
    Abstract: A shutter control device performs photography by operating a shutter housed in a lens barrel, and comprises a communication port, a shutter control unit and a memory. The communication port transmits and receives signals between the camera body and the lens barrel. The shutter control unit is provided in the camera body to output a shutter control signal. The memory is provided in the lens barrel to store shutter delay information regarding a time delay from when the shutter control signal is input to the lens barrel until when the shutter is closed. The shutter control unit receives the shutter delay information from the lens barrel and transmits the shutter control signal to the lens barrel through the communication port, ahead of an exposure time as determined by photometry, by an amount of time equal to the time delay.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: March 25, 2014
    Assignee: Pentax Ricoh Imaging Company, Ltd.
    Inventor: Masayuki Kamimura
  • Patent number: 8494357
    Abstract: A system, computer readable medium, and method for dynamically setting a camera's exposure parameters based on face detection are disclosed. When taking a picture or video of a person in front of a bright background, standard exposure algorithms tend to overexpose the background. In one embodiment disclosed herein, a face detection algorithm is run on the current picture or video frame, and the exposure metering region is inset over the detected face. Exposure time, gain, or other exposure parameters may be set based on the pixels within the exposure metering region. In another embodiment, the exposure metering region tracks a moving face according to lag parameters so that the exposure metering region remains substantially over the face. In yet another embodiment, a plurality of faces may be tracked, with the exposure parameters set based on a weighted average of the pixels within the plurality of face-containing exposure metering regions.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: July 23, 2013
    Assignee: Apple Inc.
    Inventor: Ralph Brunner
  • Publication number: 20130011126
    Abstract: A shutter control device that uses an imaging device provided in a camera body to operate a shutter housed in a lens barrel to perform photography. The shutter control device comprises a communication port and a shutter control unit. The communication port is provided for transmitting and receiving signals between the camera body and the lens barrel. The shutter control unit is provided in the camera body, and outputs a shutter control signal to operate the shutter. The shutter control signal is transmitted to the lens barrel through the communication port.
    Type: Application
    Filed: June 21, 2012
    Publication date: January 10, 2013
    Applicant: PENTAX RICOH IMAGING COMPANY, LTD.
    Inventor: Masayuki KAMIMURA
  • Patent number: 8305487
    Abstract: Provided is a multi-exposure controlling method and apparatus. An exposure control unit may set an initial exposure time based on a comparison result between a predetermined brightness confidence interval and an average high brightness that is calculated based on at least one current histogram. A comparison unit may compare the brightness confidence interval and an average low brightness that is calculated based on a subsequent histogram obtained by photographing a subject using the set initial exposure time. The exposure control unit may change the initial exposure time based on a comparison result of the comparison unit.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: November 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon-Hyuk Cha, Young Su Moon, Shi Hwa Lee
  • Patent number: 8285134
    Abstract: A wide dynamic range (WDR) hardware apparatus and a photographing apparatus including the WDR hardware apparatus are provided where the WDR unit applies weight coefficients to a luminance signal of a small size image having a first exposure time and a luminance signal of a small size image having a second exposure time longer than the first exposure time. The system combines the luminance signals applied weight coefficients, applies weight coefficients to a luminance signal of an original size image having the first exposure time and a luminance signal of an original size image having the second exposure time, and combines the luminance signals applied weight coefficients.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: October 9, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Soo-kyung Joo
  • Patent number: 8269853
    Abstract: An imaging apparatus includes: an image sensor including a plurality of charge storage-type photoelectric conversion elements disposed along a first and a second direction; a rolling shutter control unit that executes storage control to store electrical charges in a first element row and in a second element row with different timing for electrical charging, the first element row including a plurality of the charge storage-type photoelectric conversion elements along the first direction and the second element row including a plurality of the charge storage-type photoelectric conversion elements along the first direction at a different position along the second direction; a detection unit that detects light emission timing indicating a light emission cycle of each of a plurality of color components in light entering the image sensor; and a start instruction unit that engages the rolling shutter control unit to start the storage control based upon the light emission timing.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: September 18, 2012
    Assignee: Nikon Corporation
    Inventor: Masanari Indo
  • Publication number: 20120201527
    Abstract: A monitoring camera and an operation method thereof are provided. The monitoring camera includes a light sensor, a voltage comparing unit and a reference voltage generating unit. The light sensor senses an environment brightness of the monitoring camera and generates an induced current accordingly. The voltage comparing unit generates a sensing voltage according to the induced current and compares the sensing voltage and a reference voltage to obtain a first comparison result, so that the monitoring camera can determine whether to perform at least one of a plurality of mode switching operations according to the first comparison result. The reference voltage generating unit outputs the first reference voltage and determines whether to reduce the first reference voltage according to the first comparison result.
    Type: Application
    Filed: January 10, 2012
    Publication date: August 9, 2012
    Applicant: ALPHA NETWORKS INC.
    Inventor: CHUNG-MING LO
  • Patent number: 8233789
    Abstract: A system, computer readable medium, and method for dynamically setting a camera's exposure parameters based on face detection are disclosed. When taking a picture or video of a person in front of a bright background, standard exposure algorithms tend to overexpose the background. In one embodiment disclosed herein, a face detection algorithm is run on the current picture or video frame, and the exposure metering region is inset over the detected face. Exposure time, gain, or other exposure parameters may be set based on the pixels within the exposure metering region. In another embodiment, the exposure metering region tracks a moving face according to lag parameters so that the exposure metering region remains substantially over the face. In yet another embodiment, a plurality of faces may be tracked, with the exposure parameters set based on a weighted average of the pixels within the plurality of face-containing exposure metering regions.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: July 31, 2012
    Assignee: Apple Inc.
    Inventor: Ralph Brunner
  • Patent number: 8228422
    Abstract: Disclosed are an auto exposure system and a method thereof. The auto exposure system may check whether an exposure target value is correct using brightness information of an input image. When the exposure target value is not proper, the auto exposure system may readjust the exposure target value through analyzing the brightness information of the input image. Also, the auto exposure system may correct exposure of the input image based on an exposure correction value according to the adjusted exposure target value, thereby adjusting the exposure of the input image to be proper. Also, exposure information of the input image may be easily obtained from a final exposure target value.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: July 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joon Hyuk Cha, Young Su Moon, Sang Jo Lee, Ho Jin Lee
  • Patent number: 8213063
    Abstract: An image sensing apparatus including an image sensor having a first area and a second area and a gradation converter for applying a gradation conversion to an image signal is provided with a gradation conversion LUT storage storing at least two kinds of gradation conversion information. The image sensing apparatus is also provided with a gradation conversion information rewriting section for rewriting the gradation conversion information into new gradation conversion information. There can be provided an image sensing apparatus capable of carrying out a precise gradation conversion even in the case that the inflection point between the first area and the second area of the image sensor constantly changes.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: July 3, 2012
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Koichi Kamon, Kazuchika Sato, Jun Minakuti, Tetuya Katagiri
  • Patent number: 8200080
    Abstract: An image sensing apparatus has focus state detection areas, photometry areas, a defocus amount obtaining unit that obtains a defocus amount of each focus state detection area, a photometry unit that obtains a photometric value of each photometry area, and a determination unit that determines a weighting coefficient for each photometry area. The photometry areas includes a first photometry area, corresponding to any of the focus state detection areas, for which the weighting coefficient is determined using a defocus amount of the corresponding focus state detection area, and a second photometry area for which the weighting coefficient is determined using the weighting coefficient for the first photometry area or the defocus amount of the focus state detection area corresponding to the first photometry area.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: June 12, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Teruyuki Kojima
  • Patent number: 8190017
    Abstract: A method in a camera device having an image sensor and an electro-mechanical shutter mechanism is as follows. A constant drive current is applied to the shutter mechanism to close shutter at the end of a first exposure. Then, a decaying drive current is applied to the shutter mechanism during a readout interval for the first exposure. Other embodiments are also described and claimed. Other embodiments are also described and claimed.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: May 29, 2012
    Assignee: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20120082447
    Abstract: A light path adjustment apparatus includes a support plate that has a first through hole through which light passes and optical units that move between an open location where the first through hole is opened by the optical units moving toward an outside of the first through hole and a closing location where the first through hole is divided into a plurality of regions by the plurality of optical units moving toward the first through hole. The optical units block at least a part of the light in the closing location.
    Type: Application
    Filed: June 1, 2011
    Publication date: April 5, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ki-oh Jung, Cheol-eun Jang, Sung-wook Choi, Woo-jong Cho
  • Patent number: 8103158
    Abstract: In continuous shooting processing, the defocus amounts of respective focus detection areas and the reliabilities of the defocus amounts are detected from information of the focus detection areas. Weightings are determined based on the reliabilities and defocus amounts. If the detection of defocus amounts is not completed in one shooting operation during continuous shooting, weightings are determined using defocus amounts detected in a shooting operation preceding the current one during continuous shooting. If there is no defocus amount that has been detected in a shooting operation preceding the current one, weightings are determined to weight a photometry area at a predetermined position of the field. A correct exposure for shooting is determined by calculating the weighted average of photometric values obtained in a plurality of photometry areas using the determined weightings. Continuous shooting can be performed with a correct exposure without decreasing the continuous shooting speed.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: January 24, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Yoshida
  • Publication number: 20110317992
    Abstract: An image shooting device includes an image shooting part, an operation part, a display part that displays a first image which is being shot by the image shooting part under a first light source on a display medium, a recording part that records a second image shot under a second light source by the image shooting part which receives the image shooting instruction from the operation part in a storage medium, a shooting condition setting part that sets a first shooting condition for the first image and a second shooting condition for the second image when the first light source is different from the second light source, and a shooting condition control part that performs control on shooting conditions of the image shooting part such that the first image is shot under the first shooting condition and the second image is shot under the second shooting condition.
    Type: Application
    Filed: June 23, 2011
    Publication date: December 29, 2011
    Applicant: NIKON CORPORATION
    Inventor: Tetsuya TAKESHITA
  • Publication number: 20110311212
    Abstract: A camera body is provided, to which an interchangeable lens is mountable, the interchangeable lens including a diaphragm and capable of sending driving speed information of the diaphragm. The camera body has a receiving unit operable to receive the driving speed information of the diaphragm from the interchangeable lens, an imaging unit operable to capture a subject image formed by the interchangeable lens to generate image data, a controller operable to set an imaging condition for the imaging unit, and a sending unit operable to send a control signal for changing brightness information of the interchangeable lens to the interchangeable lens. The controller sets the imaging condition for a period from a start to an end of a driving of the diaphragm according to the received driving speed information of the diaphragm when the sending unit sends the control signal to the interchangeable lens.
    Type: Application
    Filed: August 26, 2011
    Publication date: December 22, 2011
    Applicant: PANASONIC CORPORATION
    Inventor: KOJI SHIBUNO
  • Patent number: 8041205
    Abstract: An electronic camera includes an imaging device. The imaging device includes an imaging surface capturing an object scene through a focus lens, and produces an object scene image in a designated cycle. When a shutter button is half-depressed, an adjuster adjusts a position of the focus lens based on the object scene image produced by the imaging device. Also, a determiner determines whether or not both an illuminance and a contrast of the object scene captured by the imaging surface fall below a reference in association with a position adjusting process of the focus lens, and a controller sets a length of the designated cycle when a determination result is affirmative to be longer than that of the designated cycle when the determination result is negative.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: October 18, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Takahiro Hori
  • Patent number: 8040425
    Abstract: An imaging apparatus includes one or a plurality of optical filters, an image sensor, an imaging signal processing part, a detecting part, and a control part. The one or the plurality of optical filters are selectively arranged in a path of an optical system for obtaining imaging light. The image sensor is provided for converting the imaging light obtained through the optical system into an imaging signal. The imaging signal processing part is provided for subjecting the imaging signal from the image sensor to a color-temperature correction processing. The detecting part is provided for detecting a type of the one or the plurality of optical filters arranged in the optical system. The control part is provided for adjusting a color temperature that is set at the imaging signal processing part to a color temperature defined for each filer detected by the detecting part.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: October 18, 2011
    Assignee: Sony Corporation
    Inventors: Kazuaki Shibuya, Hideki Nakamaru
  • Patent number: 8040410
    Abstract: A camera capable of compensating for facial field of a person to a proper brightness, and maintaining the luminance scale of the background, comprising an imaging portion for generating the picture data of the person; a gamma compensator for performing gamma compensation for the picture data; a facial field detecting portion for detecting a facial field from the picture data; a photometric portion for exposure metering value of the facial field detected by the facial field detecting portion; an exposure controlling portion for calculating a target exposure amount in response to the output of the photometric portion and controlling exposure depending on the target exposure amount; and a gamma compensation controlling portion for determining a luminance scale characteristic in accordance with the target exposure amount, wherein the gamma compensating portion is controlled on the basis of the luminance scale characteristic determined by the gamma compensation controlling portion.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: October 18, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Yuko Arai, Haruhiko Miyao, Tsutomu Usui, Haruhiko Higuchi
  • Publication number: 20110249961
    Abstract: A system, computer readable medium, and method for dynamically setting a camera's exposure parameters based on face detection are disclosed. When taking a picture or video of a person in front of a bright background, standard exposure algorithms tend to overexpose the background. In one embodiment disclosed herein, a face detection algorithm is run on the current picture or video frame, and the exposure metering region is inset over the detected face. Exposure time, gain, or other exposure parameters may be set based on the pixels within the exposure metering region. In another embodiment, the exposure metering region tracks a moving face according to lag parameters so that the exposure metering region remains substantially over the face. In yet another embodiment, a plurality of faces may be tracked, with the exposure parameters set based on a weighted average of the pixels within the plurality of face-containing exposure metering regions.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 13, 2011
    Applicant: Apple Inc.
    Inventor: Ralph Brunner
  • Patent number: 8032019
    Abstract: A camera body is provided, to which an interchangeable lens is mountable, the interchangeable lens including a diaphragm and capable of sending driving speed information of the diaphragm. The camera body has a receiving unit operable to receive the driving speed information of the diaphragm from the interchangeable lens, an imaging unit operable to capture a subject image formed by the interchangeable lens to generate image data, a controller operable to set an imaging condition for the imaging unit, and a sending unit operable to send a control signal for changing brightness information of the interchangeable lens to the interchangeable lens. The controller sets the imaging condition for a period from a start to an end of a driving of the diaphragm according to the received driving speed information of the diaphragm when the sending unit sends the control signal to the interchangeable lens.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: October 4, 2011
    Assignee: Panasonic Corporation
    Inventor: Koji Shibuno
  • Patent number: 8014663
    Abstract: A camera includes a camera control unit configured to acquire information on an accessory mounted on the camera by performing communication with an accessory control unit included in the accessory and to control a photographing operation based on the information on the accessory. When the camera control unit acquires, from the accessory control unit, first information that is required prior to start of photographing and second information that is required prior to generation of image data after the start of photographing, if the camera control unit determines that a photographer has performed an operation to start a photographing operation during a period in which the camera control unit is performing communication to acquire the second information, the camera control unit executes a photographic sequence in priority to acquiring the second information and thereafter acquires the second information.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: September 6, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koji Inoue
  • Publication number: 20110211823
    Abstract: A method in a camera device having an image sensor and an electro-mechanical shutter mechanism is as follows. A constant drive current is applied to the shutter mechanism to close shutter at the end of a first exposure. Then, a decaying drive current is applied to the shutter mechanism during a readout interval for the first exposure. Other embodiments are also described and claimed. Other embodiments are also described and claimed.
    Type: Application
    Filed: May 13, 2011
    Publication date: September 1, 2011
    Applicant: Apple Inc.
    Inventor: Richard Tsai
  • Publication number: 20110194850
    Abstract: A wide dynamic range (WDR) hardware apparatus and a photographing apparatus including the WDR hardware apparatus are provided where the WDR unit applies weight coefficients to a luminance signal of a small size image having a first exposure time and a luminance signal of a small size image having a second exposure time longer than the first exposure time. The system combines the luminance signals applied weight coefficients, applies weight coefficients to a luminance signal of an original size image having the first exposure time and a luminance signal of an original size image having the second exposure time, and combines the luminance signals applied weight coefficients.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 11, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Soo-kyung Joo
  • Patent number: 7995138
    Abstract: Maximum and minimum aperture sizes are regulated with regard to a diaphragm in order to secure predetermined optical capability in an optical unit which includes a taking lens and the diaphragm. In normal taking, the diaphragm is used within a normal taking range from the maximum to the minimum aperture sizes. In the present invention, an aperture size which is larger than the maximum size and a size which is smaller than the minimum size (extra aperture size or extra small size) are respectively set at outside the range that secures the capability. The aperture sizes of the diaphragm at outside the specified range are used at least for one of the following: automatic exposure (AE) adjustment, auto focus (AF) adjustment, electronic zoom, displaying a moving image, taking for recording the moving image, and taking under a low resolution by thinning out pixels.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: August 9, 2011
    Assignee: Fujifilm Corporation
    Inventors: Akihisa Yamazaki, Atsushi Misawa, Shigeru Kondo, Michitaka Nakazawa