Display Intensity Control Patents (Class 396/282)
  • Patent number: 10470720
    Abstract: Provided is a heart rate activity detecting method based on dynamic images. The method includes tracking a moving object. Preset brightness is determined based on an ambient condition. An image of the moving object is captured to generate a corresponding RGB color space, which is then converted to an image color space with adjustable brightness. The brightness of the image color space is adjusted according to the preset brightness to generate an image with corrected brightness, which is then converted to a RGB color space with the corrected brightness for calculating a heart rate activity of the moving object. The disclosure is capable of addressing the issue of an unstable light source by adjusting the brightness of the dynamic images, and then calculating the heart rate activity of the moving object according to the dynamic images. A heart rate activity detecting system based on dynamic images is also provided.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: November 12, 2019
    Assignee: Industrial Technology Research Institute
    Inventors: Tsung-Hua Li, Rong-Rong Chen, Yi-Fei Luo, Ming-Chieh Tsai
  • Patent number: 8085333
    Abstract: A digital camera includes: an image processing unit that creates first display image data and second display image data; a display device that displays a first screen image and a second screen image so as to allow a user to observe the first screen image when viewed along a first direction with respect to a display face and so as to allow the user to observe the second screen image when viewed along a second direction that differs from the first direction; and a control unit that instructs the display device to display the first display image data as the first screen image, and the second display image data as the second screen image.
    Type: Grant
    Filed: April 7, 2010
    Date of Patent: December 27, 2011
    Assignee: Nikon Corporation
    Inventor: Minoru Kato
  • Patent number: 7952637
    Abstract: A display apparatus in which a long-time depression of a button for predetermined operations is discriminated, and a light-intensity of a display apparatus is modulated to a maximum or minimum intensity when a long-time depression is identified. This allows for setting a light intensity of a display apparatus by a simple operation.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: May 31, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hirotaka Seki
  • Patent number: 7907836
    Abstract: An imaging apparatus whose posture is easily adjustable is provided. The imaging apparatus is configured to include an inclination detector detecting a degree of inclination of one of the imaging apparatus and an image captured by the imaging apparatus relative to a horizontal direction orthogonal to a direction of gravity; a display unit; a first inclination indicator unit allowing the display unit to display an indicator to indicate the degree of inclination according to a detection result from the inclination detector; a second inclination indicator unit notifying via sound according to a detection result from the inclination detector that the degree of inclination is over a predetermined value; and a selector unit allowing at least one of the first and second inclination indicator units to operate.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: March 15, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Shinohara, Koji Yokoyama, Mayu Takano, Hiroshi Morohoshi
  • Patent number: 7583892
    Abstract: The present invention discloses a finder device capable of adjusting the amount of light emitted from a light-emitting display section arranged in the device according to the light-receiving level of an image pickup device. The amount of light emitted is adjusted, for example, so that the light-receiving level of the image pickup device is not saturated. The light-emitting display section can be configured, for example, to include a LED display element for projecting light onto a mat screen in the finder device and a drive circuit that can adjust the amount of LED light, or to include an LCD display unit provided adjacent to the mat screen and a backlight unit that can adjust the amount of light for the LCD unit.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: September 1, 2009
    Assignee: Olympus Imaging Corp.
    Inventor: Yoichiro Okumura
  • Patent number: 7454137
    Abstract: A scene adaptive power control device using a plurality of input images as consecutive input images and controlling a power level of a light source used in displaying the third input image. The scene adaptive power control device including a histogram analysis unit to analyze the second input image and detect a first maximum brightness value of the second input image, a determination unit to detect brightness values matching a first threshold as a predetermined frequency value in the generated histogram and determining a second maximum brightness value, a generation unit generating a power control signal to control the power level of the light source by a value obtained by dividing the second maximum brightness value by the first maximum brightness value, and a compensation unit increasing a brightness of the third input image inversely proportional to the power level of the light source reduced by the power control signal.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: November 18, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-jin Lee, Moon-cheol Kim
  • Patent number: 7403227
    Abstract: A digital camera includes a LCD that has a back light whose intensity level is set at a point midway between a maximum intensity setting and a minimum intensity setting. The back light level is then adjusted automatically from this default setting to a brightness level that corresponds to a measured scene level. The back light intensity level and contrast level of the LCD then change automatically thereafter to correspond to the measured scene level whereby the LCD controls are adjusted according to the lighting environment.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: July 22, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Charles E. Schinner
  • Patent number: 6816676
    Abstract: A method and arrangement of controlling the attributes of a camera display is disclosed. The method and arrangement obtain information relating to a scene and detect a sensitivity value associated with a camera. Using this information, at least a brightness of the camera display associated with the camera is controlled in accordance with the obtained information and the detected sensitivity value.
    Type: Grant
    Filed: April 19, 2002
    Date of Patent: November 9, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Mark John Bianchi, Amy E Battles
  • Publication number: 20030198466
    Abstract: A method and arrangement of controlling the attributes of a camera display is disclosed. The method and arrangement obtain information relating to a scene and detect a sensitivity value associated with a camera. Using this information, at least a brightness of the camera display associated with the camera is controlled in accordance with the obtained information and the detected sensitivity value.
    Type: Application
    Filed: April 19, 2002
    Publication date: October 23, 2003
    Inventors: Mark John Bianchi, Amy E. Battles
  • Patent number: 6374054
    Abstract: A digital camera includes a viewfinder having a proximity sensor which is activated whenever a user looks through the viewfinder in preparation of viewing an object or framed scene. An illuminated status indicator mounted for viewing within the viewfinder for providing the user when camera status information is coupled to the proximity sensor through a microprocessor that controls the illumination level of the status indicator. The illumination level of the status indicator is controlled by the microprocessor in response to an auto-exposure algorithm that measures the brightness level of the object or framed scene that is being viewed by the user through the viewfinder.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: April 16, 2002
    Assignee: Hewlett-Packard Company
    Inventor: Charles E. Schinner
  • Patent number: 6047139
    Abstract: A camera capable of display in a finder, the camera including a finder optical system that allows a user to view an object to be photographed; a liquid crystal display device positioned within an optical path of the finder optical system; a polarizing member positioned in the optical path of the finder optical system and behind the liquid crystal display device, as viewed along an optical axis of the optical system; and projection device for projecting polarized light beams toward the liquid crystal display device from outside the optical path of the finder optical system.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: April 4, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasuo Suda
  • Patent number: 5983029
    Abstract: An optical apparatus including a detecting unit for detecting sight line direction of a human eye, a correcting data forming unit, electrically connected to the detecting unit, for forming correcting data as to personal difference of a human eye, a visual mark presenting unit electrically coupled to the correcting data forming unit for presenting a plurality of focus point detecting frames for sampling correcting data at different positions in a visual field and being capable of flickering and lighting without flickering, and a control unit for controlling the apparatus on the basis of the sight line direction and the correcting data.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: November 9, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Yamada, Keiji Nagata, Yoshiaki Irie, Akihiko Nagano
  • Patent number: 5903788
    Abstract: A subject image is formed on a focusing screen by a taking lens in a camera. The focusing screen is constituted by a liquid crystal whose light diffusion characteristic is variable. The light diffusion characteristic is varied according to an open aperture value of the taking lens which is attached to the camera.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: May 11, 1999
    Assignee: Minolta Co., Ltd.
    Inventors: Hiromu Mukai, Katsuto Tanaka, Jun Ishihara, Ichiro Tsujimura
  • Patent number: 5890022
    Abstract: A camera comprises an exposure counter for indicating the number of frames of a film load that have been exposed or remain to be exposed, and a flash illumination light source for illuminating a subject being photographed. The exposure counter has a phosphorescent substance that becomes luminescent due to the absorption of radiation and continues with an afterglow some time after the radiation has stopped, to permit one to read the exposure counter in dimly lit or dark ambience. A light pipe directs illumination from the light source to the phosphorescent substance. Thus, the exposure counter can be read in dimly lit or dark ambience after the light source has been used.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: March 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Dwight J. Petruchik, Donald P. McGinn
  • Patent number: 5708881
    Abstract: A needle-type display device for displaying photographic data in a camera, the display device including a display having indicating needles which move directly from displaying presently displayed values to displaying new values without temporarily returning to an origin position. The display device includes a half-press switch having first and second positions, and a rangefinder and photometric unit which operate when the half-press switch is in the first position. The display displays photographic data measured by the range finder and photometric unit according to an amount of movement from an origin position by the respective indicating needles. When the half-press switch switches to the second position, a hold command unit operates to hold the respective indicating needles for a predetermined period of time at the display position displaying the measured amount.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: January 13, 1998
    Assignee: Nikon Corporation
    Inventors: Daiki Tsukahara, Tadashi Ohtani