Patents by Inventor Kei Itoh

Kei Itoh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10007998
    Abstract: An image processor includes a corrector that corrects deviation of a coordinate in an image photographed by a photographing unit based on a correction parameter stored in a memory; and an updater that generates the correction parameter based on the image photographed by the photographing unit, and updates the correction parameter stored in the memory, the updater updating the correction parameter according to a process condition based on the image corrected by the corrector.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: June 26, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasuhiro Nomura, Kenji Shiraishi, Morihiro Takagi, Kei Itoh
  • Patent number: 9467615
    Abstract: An imaging apparatus is provided that includes an image sensor that receives light from an object through an imaging lens, a lens driver that moves the imaging lens, and an automatic focus detector that determines an in-focus lens position based on imaging data obtained from the image sensor, the automatic focus detector being capable of performing a focus detection operation with a second switch that is different from a release switch in that it includes a dynamic-image focus detector and a still-image focus detector, and the dynamic-image focus detector further including a focus detection operation selector that varies a focus detection operation controlled by the second switch in accordance with whether a video is being recorded.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: October 11, 2016
    Assignee: RICOH IMAGING COMPANY, LTD.
    Inventor: Kei Itoh
  • Publication number: 20160275694
    Abstract: An image processor includes a corrector that corrects deviation of a coordinate in an image photographed by a photographing unit based on a correction parameter stored in a memory; and an updater that generates the correction parameter based on the image photographed by the photographing unit, and updates the correction parameter stored in the memory, the updater updating the correction parameter according to a process condition based on the image corrected by the corrector.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 22, 2016
    Inventors: Yasuhiro NOMURA, Kenji SHIRAISHI, Morihiro TAKAGI, Kei ITOH
  • Patent number: 9332173
    Abstract: An imaging device is configured to include an imaging lens, an imaging unit which acquires image data based on an optical image of a subject received via the imaging lens, a motion detector which detects a motion of the subject based on image data sequentially obtained from the imaging unit, a focus detector which calculates focus position data based on the image data obtained from the imaging lens when the motion detector detects a motion of the subject, and an in-focus position estimating unit which estimates an in-focus position based on the calculated focus position data.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: May 3, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kei Itoh, Kazuya Niyagawa
  • Patent number: 9244335
    Abstract: An imaging device includes an imaging element configured to output an image signal in accordance with a target image acquired via an imaging lens, an autofocus detector configured to decide a focus in accordance with image data obtained from the image signal, a lens movement section configured to move the imaging lens on the basis of the focus, a driving condition setting section configured to set a driving condition of the imaging element, a point light source detector configured to determine whether or not the target is a point light source target on the basis of a brightness component of the image data, a target detector configured to detect a certain target from the image data, and a filter selection section configured to select a filter through which the image data is to be transmitted.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: January 26, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventor: Kei Itoh
  • Patent number: 9201211
    Abstract: An imaging device includes an imaging lens which obtains an optical image of a subject, an imaging element which receives from a subject light passing through the imaging lens, a focus position determination unit which determines a focus position of the imaging lens according to image data obtained from the imaging element and a lens movement unit which moves the imaging lens, the focus position determination unit including an AF operation start position determination unit configured to calculate an AF evaluation value according to the image data, and determine an AF operation start position according to the AF evaluation value when the lens movement unit drives the imaging lens to a predetermined operation start position.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: December 1, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventor: Kei Itoh
  • Patent number: 9106837
    Abstract: An image capturing device includes: an image capturing unit that captures a subject image through a lens and converts the subject image into an electric signal; an image displaying unit that displays an image; a designation accepting unit that is provided on a display surface of the image displaying unit and that accepts designation of a plurality of positions on the image displayed on the image displaying unit; a range-finding unit that performs range finding of a distance to a subject by using a plurality of two-dimensional image sensors; an area setting unit that sets a range-finding area obtained from a range finding result for a region that includes the plurality of positions designated through the designation accepting unit; a position determining unit that determines in-focus positions based on distances of the range-finding areas; and a continuous shooting unit that performs image capturing at the in-focus positions.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: August 11, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Kei Itoh, Yoichi Ito
  • Patent number: 8928799
    Abstract: An imaging device includes an imaging lens, an image sensor to output an image signal in accordance with an image of a subject captured via the imaging lens, a lens driver to move the imaging lens, an autofocus detector to determine a focal point according to image data obtained from the image signal, a point source detector to determine whether or not a subject is a point source subject on the basis of a brightness component included in the image data, and a driving mode setter to change a driving condition of the image sensor when the subject is determined to be a point source subject.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: January 6, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Kei Itoh
  • Publication number: 20140211080
    Abstract: An imaging apparatus is provided that includes an image sensor that receives light from an object through an imaging lens, a lens driver that moves the imaging lens, and an automatic focus detector that determines an in-focus lens position based on imaging data obtained from the image sensor, the automatic focus detector being capable of performing a focus detection operation with a second switch that is different from a release switch in that it includes a dynamic-image focus detector and a still-image focus detector, and the dynamic-image focus detector further including a focus detection operation selector that varies a focus detection operation controlled by the second switch in accordance with whether a video is being recorded.
    Type: Application
    Filed: January 30, 2014
    Publication date: July 31, 2014
    Applicant: RICOH IMAGING COMPANY, LTD.
    Inventor: Kei ITOH
  • Patent number: 8724981
    Abstract: An imaging apparatus includes: a focus lens; an imaging device; a movement detecting unit that detects the movement of an image on the basis of a difference between a plurality of image data which is output from the imaging device in time series; an estimating unit that estimates the movement of an object or a photographer on the basis of the movement of the image detected by the movement detecting unit; a movement range setting unit that sets a movement range of the focus lens on the basis of the movement of the object or the photographer estimated by the estimating unit; and a focus position detecting unit that moves the focus lens in an optical axis direction in the movement range set by the movement range setting unit and detects a focus position where the focus lens is focused on the position of the object of the image.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: May 13, 2014
    Assignee: Ricoh Company, Limited
    Inventor: Kei Itoh
  • Patent number: 8718460
    Abstract: A range-finding device includes: a plurality of image capturing elements that are provided at a predetermined interval; a lens that forms an image of a range-finding object on each of the image capturing elements; a distance calculating unit that calculates a distance to the range-finding object for each of a plurality of range-finding areas that are set on the respective image capturing elements based on an image signal output from each of the range-finding areas according to the image that is formed; a distribution generating unit that generates a distribution of the calculated distances; and a position specifying unit that specifies a position where the range-finding object is present in the range-finding area based on the distribution of the distances.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: May 6, 2014
    Assignee: Ricoh Company, Limited
    Inventor: Kei Itoh
  • Publication number: 20130335619
    Abstract: An imaging device includes an imaging element configured to output an image signal in accordance with a target image acquired via an imaging lens, an autofocus detector configured to decide a focus in accordance with image data obtained from the image signal, a lens movement section configured to move the imaging lens on the basis of the focus, a driving condition setting section configured to set a driving condition of the imaging element, a point light source detector configured to determine whether or not the target is a point light source target on the basis of a brightness component of the image data, a target detector configured to detect a certain target from the image data, and a filter selection section configured to select a filter through which the image data is to be transmitted.
    Type: Application
    Filed: June 12, 2013
    Publication date: December 19, 2013
    Inventor: Kei ITOH
  • Publication number: 20130278809
    Abstract: An image capturing device includes: an image capturing unit that captures a subject image through a lens and converts the subject image into an electric signal; an image displaying unit that displays an image; a designation accepting unit that is provided on a display surface of the image displaying unit and that accepts designation of a plurality of positions on the image displayed on the image displaying unit; a range-finding unit that performs range finding of a distance to a subject by using a plurality of two-dimensional image sensors; an area setting unit that sets a range-finding area obtained from a range finding result for a region that includes the plurality of positions designated through the designation accepting unit; a position determining unit that determines in-focus positions based on distances of the range-finding areas; and a continuous shooting unit that performs image capturing at the in-focus positions.
    Type: Application
    Filed: January 10, 2012
    Publication date: October 24, 2013
    Inventors: Kei Itoh, Yoichi Ito
  • Publication number: 20130242159
    Abstract: An imaging device includes a shooting lens configured to image an image of a subject through passage of light from the subject, an imaging unit configured to receive light which has passed through the shooting lens, and convert the received light into an electric signal, so as to generate image data of the subject, and a display on which the image data is displayed, wherein when a predetermined condition is satisfied, the shooting lens is moved to a predetermined position on a close side, focal point information is calculated from the image data, and the image data is displayed on the display by a display mode which visibly displays the focal point information.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Inventor: Kei ITOH
  • Patent number: 8452168
    Abstract: A distance measurement and photometry device includes a pair of distance measurement sensors each of which is a two-dimensional image sensor, a photometry sensor, which includes a two-dimensional image sensor, a pair of distance measurement lenses arranged to correspond to the pair of distance measurement sensors, a photometry lens arranged to correspond to the photometry sensor, a photometry process unit that calculates a brightness value of a subject, an exposure state setting unit that sets an exposure state correspond to at least the pair of distance measurement sensors, a distance measurement unit that measures a distance to the subject, wherein the exposure state setting unit alternates an exposure state of at least the pair of distance measurement sensors corresponding to a result of the photometry process unit.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 28, 2013
    Assignee: Ricoh Company, Ltd.
    Inventor: Kei Itoh
  • Publication number: 20130093941
    Abstract: An imaging device includes an imaging lens, an image sensor to output an image signal in accordance with an image of a subject captured via the imaging lens, a lens driver to move the imaging lens, an autofocus detector to determine a focal point according to image data obtained from the image signal, a point source detector to determine whether or not a subject is a point source subject on the basis of a brightness component included in the image data, and a driving mode setter to change a driving condition of the image sensor when the subject is determined to be a point source subject.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 18, 2013
    Inventor: Kei ITOH
  • Patent number: 8390719
    Abstract: An imaging device includes an imaging section which images a subject, a recording section which stores a plurality of images of the subject imaged by the imaging section, a display section which displays the plurality of images stored in the storing section, a timetable creating section which creates a timetable in which a display time for each of the plurality of images is set and a playback section which continuously plays back the plurality of images according to the timetable created by the timetable creating section, and displays the images on the display section.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: March 5, 2013
    Assignee: Ricoh Company, Ltd.
    Inventor: Kei Itoh
  • Publication number: 20120236197
    Abstract: An imaging device includes an imaging lens which obtains an optical image of a subject, an imaging element which receives from a subject light passing through the imaging lens, a focus position determination unit which determines a focus position of the imaging lens according to image data obtained from the imaging element and a lens movement unit which moves the imaging lens, the focus position determination unit including an AF operation start position determination unit configured to calculate an AF evaluation value according to the image data, and determine an AF operation start position according to the AF evaluation value when the lens movement unit drives the imaging lens to a predetermined operation start position.
    Type: Application
    Filed: November 30, 2010
    Publication date: September 20, 2012
    Inventor: Kei Itoh
  • Publication number: 20120195580
    Abstract: A range-finding device includes: a plurality of image capturing elements that are provided at a predetermined interval; a lens that forms an image of a range-finding object on each of the image capturing elements; a distance calculating unit that calculates a distance to the range-finding object for each of a plurality of range-finding areas that are set on the respective image capturing elements based on an image signal output from each of the range-finding areas according to the image that is formed; a distribution generating unit that generates a distribution of the calculated distances; and a position specifying unit that specifies a position where the range-finding object is present in the range-finding area based on the distribution of the distances.
    Type: Application
    Filed: January 5, 2012
    Publication date: August 2, 2012
    Inventor: Kei ITOH
  • Publication number: 20120105710
    Abstract: An imaging device is configured to include an imaging lens, an imaging unit which acquires image data based on an optical image of a subject received via the imaging lens, a motion detector which detects a motion of the subject based on image data sequentially obtained from the imaging unit, a focus detector which calculates focus position data based on the image data obtained from the imaging lens when the motion detector detects a motion of the subject, and an in-focus position estimating unit which estimates an in-focus position based on the calculated focus position data.
    Type: Application
    Filed: July 22, 2010
    Publication date: May 3, 2012
    Inventors: Kei Itoh, Kazuya Niyagawa