Raster Size Or Position Compensation Patents (Class 348/747)
  • Patent number: 10051250
    Abstract: The present invention relates to automatic correction of an area on which contents are projected by a projector, i.e., a so-called projection area, in a theater, and specifically, to a method and system for automatically correcting a projection area by photographing a projection area in the theater using a photographing device such as a camera or the like, and matching the image photographed like this, coordinates of a projection area projected by the projector and finally a contents image projected on a projection surface such as a screen, a wall or the like so that eventually the contents image may be properly output in an effective projection area of a projection surface in the theater.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: August 14, 2018
    Assignee: CJ CGV CO., LTD.
    Inventors: Kyung Yoon Jang, Hyung Jin Yoon
  • Patent number: 10002816
    Abstract: A semiconductor integrated circuit, a radiation detection unit and a cooling unit are provided. Here, a radiation detection unit is provided near the semiconductor integrated circuit and detects a radiation quantity. The cooling unit cools the semiconductor integrated circuit according to the detected radiation quantity. In an environment where a radiation quantity is more, the generation of a malfunction can be restrained by cooling the semiconductor integrated circuit.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: June 19, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Daisuke Matsuura, Yoshikatsu Kuroda, Kei Gemba
  • Patent number: 9942531
    Abstract: A color calibration device for a laser scanning apparatus includes a compensation unit configured to electronically compensate for positional errors of the three-color laser source. The compensation unit includes an emitted light detector configured to measure a power of an emitted light beam. A calibration unit coupled to the emitted light detector has a controller configured to generate a quantity correction value for the three-color laser source. A laser source control element is configured to generate a control quantity for the three-color laser source, based on the quantity correction value. A dominant color detector is configured to detect any dominant color in the light beam being projected and actuate the controller for the dominant color.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: April 10, 2018
    Assignee: STMicroelectronics LTd
    Inventor: Sason Sourani
  • Patent number: 9615070
    Abstract: A black stripe detector is configured to detect a black stripe region of an input video signal in which a part of an effective region is a black stripe region, and to generate black stripe information. A keystone correction processor is configured to implement keystone correction processing for the input video signal, and to generate a keystone-corrected video signal. A black stripe information corrector is configured to correct the black stripe information which indicates a corrected black stripe region owned by the keystone correction video signal, to corrected black stripe information based on keystone correction parameters when the keystone correction processor performs keystone correction processing for the input video signal. A video signal processor is configured to implement predetermined video signal processing for the keystone-corrected video signal by using the keystone-corrected video signal and the corrected black stripe information.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: April 4, 2017
    Assignee: JVC KENWOOD CORPORATION
    Inventor: Atsushi Yoshida
  • Patent number: 9548030
    Abstract: A light quantity measurement unit measures a quantity of light of a light source that has a first light-emitting element that emits light of a first wavelength band and a second light-emitting element that emits light of a second wavelength band. The light quantity measurement unit includes first and second filters having the first and second wavelength bands as the detection wavelength bands.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: January 17, 2017
    Assignees: NEC CORPORATION, NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Junichi Miyamoto, Shuichi Nakanishi
  • Patent number: 9398278
    Abstract: A method of operation of a graphical display system includes: generating a first registration point of an adaptive alignment image; calculating the adaptive alignment image having a first alignment point with a known location relative to the first registration point; projecting a projected image, having a first projected registration point, with the adaptive alignment image for displaying on a display surface with the first alignment point is a first projected alignment point on the display surface; calculating an adjustment for the adaptive alignment image using a relative location between the first alignment point and the first registration point, and the first projected alignment point and the first projected registration point, respectively; and creating an apparent image as an adaptive keystone corrected perception of the projected image by modifying the display image with the adjustment for displaying from a projector device.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: July 19, 2016
    Assignee: Telenav, Inc.
    Inventor: Yi-Chung Chao
  • Patent number: 9052521
    Abstract: A laser-based display device includes a plurality of ultraviolet lasers configured to excite a phosphor-containing display screen in order to produce visible light. The laser-based display device also includes a reference laser used for calibration operations. A control system within the laser-based display device causes the reference laser beam to scan across one or more calibration features, and adjusts optical components of the laser-based display device, including activation timing of the ultraviolet lasers, based on feedback patterns generated by the calibration features, to compensate for drift effects. The calibration features may be disposed off-screen or on-screen.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: June 9, 2015
    Assignee: PRYSM, INC.
    Inventors: Roger Hajjar, Chris Butler, Brian Tremaine
  • Patent number: 9022578
    Abstract: A projection display device includes light sources having light-emitting elements for emitting lights in R, G, B colors, temperature sensors for the respective colors disposed near the light sources in the respective colors, light sensors for the respective colors disposed near the light sources in the respective colors for detecting light leakages from the light sources in the respective colors, a cooling unit for cooling the light sources in the respective colors, light modulators employing three panels of liquid crystal devices, a projection optical system, an amount-of-light controller for maintaining a predetermined ratio of the amounts of lights emitted from the light sources in the respective colors, and a cooling controller for controlling the cooling unit for the light sources in the respective colors.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: May 5, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Shuichi Nakanishi
  • Patent number: 8985782
    Abstract: A projector that projects an image allows selection of one of a plurality of controlled objects located in correspondence with the vertices of the contour of the image and the sides of the contour, moves the selected controlled object within the image based on input operation, and corrects the contour of the image based on the moved controlled object.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 24, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Jun Yoshimura, Makoto Kobayashi
  • Patent number: 8953048
    Abstract: The present invention ensures the visibility of a character or a drawing displayed on a screen. The illuminance of one or more partial areas forming a display unit is measured, and a video display position is set to an area except for the partial area where the illuminance is a reference value or more.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: February 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Furukawa
  • Patent number: 8941785
    Abstract: A projector includes a moving unit adapted to move positions of at least six correction points, which are included in a correcting image, a reception unit adapted to receive a designation on a value of a parameter representing linearity, a derivation unit adapted to derive a correspondence relationship of the coordinates between and input image and the correcting image using coordinates of the at least six correction points moved by the moving unit, and the parameter having the value designation of which is received by the reception unit, and a processing unit adapted to perform a correction process on the input image based on the correspondence relationship derived by the derivation unit.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: January 27, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Manabu Saigo
  • Patent number: 8891026
    Abstract: Provided is a projection video display device with which a sliding load is minimized while maintaining an adjustment precision in a lens shift mechanism. A lens shift mechanism (32) which moves a projection lens in a direction which is orthogonal to the optical axis of projected light has a configuration in which mobile bases (50, 60), which retain the projection lens, slide using a shaft (52), which is attached on a fixed member (4) side, as a guide member. A further aspect of the configuration is that a correction screw is inserted from the rear face side of the fixed member (4) to make contact with the shaft (52), and optical axis tilt and misalignment of the projection lens are corrected by adjusting the degree of insertion of the correction screw.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: November 18, 2014
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Chohei Ono, Shinro Inui, Masayuki Fukui, Kazuomi Kaneko, Nobuki Matsui
  • Patent number: 8817111
    Abstract: This invention provides a calibration system and method for multi-unit display systems without a need for switching the system input resolution/configuration of the display system while calibrating. This serves to avoid carrying out a re-synchronization step. As such, this system and method allows for increases speed and reduced likelihood of failure. This system and method also corrects the display system by providing an arrangement that employs a minimum of required changes so as to avoid any changes that can consequently affect the output image of the display system. Calibration of the system of display units occurs free of any changes to the input resolution and this resolution is maintained in a manner that resists change unless specifically required. Moreover, this system and method enables a resolution for the overall system that differs from the sum of the input resolutions of the discrete, individual display units in the collection.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 26, 2014
    Assignee: Scalable Display Technologies, Inc.
    Inventors: Dennis Miaw, Rajeev J. Surati, Kevin Amaratunga, Samson J. Timoner, Tyler M. Johnson
  • Patent number: 8786788
    Abstract: A method is disclosed herein that derives a post-alignment transform that is applied to the input source after the application of an alignment transform to ensure that when each source illuminates the screen, the display is aligned and retains the correct displayed aspect ratio. The transform takes into account the alignment transform and the input source aspect, and then performs a secondary, post-processing transformation that corrects the distortion induced by the alignment transform. This aspect-preserving function is a linear transform that maps pixels in the aligned space to the aligned and aspect-correct space and can be applied to the input signal after the first alignment transform, or, in the case where the alignment transform is also linear, transforms can be directly combined to derive a compound multi-projector, aspect preserving transform. In this way, the input signal to the projectors will be aligned as well as retain proper aspect.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: July 22, 2014
    Assignee: Mersive Technologies, Inc.
    Inventors: Christopher O. Jaynes, Russell Huonder
  • Patent number: 8777419
    Abstract: A projection apparatus and a location method for determining a position of a light point on a projection image of the projection apparatus are provided. The projection apparatus comprises a lens, a light detector, a light guide module and a processing circuit. The light guide module is configured to receive the light point via the lens, and to guide the light point into the light detector. The light detector outputs a detection signal to the processing circuit according to the light point within a detection period. The processing circuit determines the position of the light point on the projection image according to the detection signal.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: July 15, 2014
    Assignee: Delta Electronics, Inc.
    Inventor: June-jei Huang
  • Patent number: 8721089
    Abstract: The image projection apparatus is disclosed to which plural interchangeable optical units are selectively attachable. The apparatus includes a shift mechanism moving an attached optical unit, which is one of the plural interchangeable optical units that is attached to the apparatus, with respect to a light modulation element in a direction orthogonal to an optical axis, an actuator driving the shift mechanism, and a controller controlling drive of the actuator using a control parameter for moving the attached optical unit by a specific movement amount via the shift mechanism. The controller acquires information on at least one of a weight and an optical characteristic of the attached optical unit from a memory provided in one of the apparatus and the attached optical unit, and to change the control parameter using the acquired information.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: May 13, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichi Hatakeyama, Azusa Sugawara
  • Patent number: 8721091
    Abstract: An optical system having a plane anisotropic retroreflector portion which specularly reflects radiation components in a first plane of incidence, but retroreflects radiation components in a second plane of incidence, a first imaging portion which produces on the retroreflector portion a line-shaped intermediate image of an object point in an object plane in a specified position relative to the system, the image extending along a line in the second plane of incidence, and a second imaging portion by means of which the line-shaped intermediate image is imaged into an image point.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 13, 2014
    Assignee: Giesecke & Devrient GmbH
    Inventor: Bernd Wunderer
  • Patent number: 8690348
    Abstract: Provided is a system for adjusting an image of a beam projector using a camera attached remote controller and a method thereof. The system for adjusting images of a beam projector according to the present invention includes: a remote controller photographing test images projected on a screen and detecting pattern images from the photographed test images and generating control information including at least one parameter necessary to adjust the images through the detected pattern images; and a beam projector receiving the control information for adjusting images from the remote controller and adjusting the input image by using parameters included in the received control information and outputting them to the screen. Therefore, the present invention adjusts colors and geometrical shapes of images at a user's viewpoint, thereby making it possible to improve the satisfaction of user and implement the system in various forms.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: April 8, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeong Nam Yeom, Sung Hoon Kim, Joon Myun Cho, Joo Chan Sohn
  • Patent number: 8662676
    Abstract: Devices and techniques are described for automatically calibrating a projector system. The projector system undergoing calibration is coupled to a computing device and an automated positioning platform coupled to a target structure. The computing device acquires images using a calibrated camera of one or more patterns projected by the projector onto the target structure when the target structure is in a plurality of repeatable poses. From these acquired images, intrinsic projector parameters may be determined. Once determined, the parameters may be used to correct images produced by the projector or acquired by the camera which include a projected pattern or portion thereof.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 4, 2014
    Assignee: Rawles LLC
    Inventors: Samuel Henry Chang, Edward Dietz Crump, Manika Puri, Steve G. Gonzalez
  • Publication number: 20130314550
    Abstract: Disclosure is directed to providing projected output from a receiver that includes ambiance or environmental images and sounds for display to and/or listening by a user. Other aspects are directed to processing or altering program service video to produce a compensated video that is output by a projector component of a receiver. The modified image compensates for characteristics associated with the ambient light conditions and/or characteristics of the projection surface upon which the projector outputs an image.
    Type: Application
    Filed: November 24, 2010
    Publication date: November 28, 2013
    Applicant: ECHOSTAR UKRAINE L.L.C.
    Inventors: Maxim Litvinov, Andrey Kuplevakhsky, Taras Stetsyuk, Denys Gonchar
  • Patent number: 8591042
    Abstract: Techniques and display systems that provide display systems suitable for various display applications, including display systems that provide a controlled climate in an enclosure of the system to protect the display components and display systems that produce high-contrast images for outdoor displays, large-format displays and other display applications.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 26, 2013
    Assignee: Prysm, Inc.
    Inventor: Roger A. Hajjar
  • Publication number: 20130278840
    Abstract: A method is disclosed herein that derives a post-alignment transform that is applied to the input source after the application of an alignment transform to ensure that when each source illuminates the screen, the display is aligned and retains the correct displayed aspect ratio. The transform takes into account the alignment transform and the input source aspect, and then performs a secondary, post-processing transformation that corrects the distortion induced by the alignment transform. This aspect-preserving function is a linear transform that maps pixels in the aligned space to the aligned and aspect-correct space and can be applied to the input signal after the first alignment transform, or, in the case where the alignment transform is also linear, transforms can be directly combined to derive a compound multi-projector, aspect preserving transform. In this way, the input signal to the projectors will be aligned as well as retain proper aspect.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 24, 2013
    Applicant: Mersive Technologies, Inc.
    Inventors: Christopher O. Jaynes, Russell Huonder
  • Patent number: 8545025
    Abstract: An image processing apparatus includes: an image information input unit which receives input of first image information; and a sharpness adjustment unit which divides a screen image corresponding to the first image information into a plurality of areas and performs a sharpness adjustment for each of the divided areas to output second image information.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: October 1, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Naoki Suzuki
  • Patent number: 8534844
    Abstract: An apparatus and method are disclosed for dynamic keystone correction. A measurement module measures distances from a projector to each of at least three projected points of a first projected image projected on a first surface with projection angles between each projected point. The at least three projected points are endpoints for at least two vectors with a target ratio of vector lengths. An adjustment module calculates an actual ratio of actual vector lengths of the at least two vectors. The adjustment module further adjusts a first aspect ratio of first projected image until the actual ratio is equivalent to the target ratio.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: September 17, 2013
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: Rod D. Waltermann, Scott Edwards Kelso, John Carl Mese, Nathan J. Peterson, Arnold S. Weksler
  • Patent number: 8485668
    Abstract: Techniques for utilizing an infrared illuminator, an infrared camera, and a projector to create a virtual 3D model of a real 3D object in real time for users' interaction with the real 3D object.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: July 16, 2013
    Assignee: Microsoft Corporation
    Inventors: Chunhui Zhang, Ji Zhao, Chunshui Zhao, Rui Gao
  • Patent number: 8451389
    Abstract: An image processor that corrects image signals corresponding to sub-pixels which form one pixel includes: a shift amount storage section that stores shift amounts of display positions of display sub-pixels corresponding to the sub-pixels which form a display pixel with respect to a predetermined reference position within a display image; and an image signal correcting section that corrects image signals corresponding to sub-pixels, which form each pixel of an input image, on the basis of the shift amounts stored in the shift amount storage section. The image signal correcting section corrects image signals in which dummy image signals corresponding to dummy sub-pixels, which are provided outside sub-pixels in an endmost portion of the input image, are added to input image signals of the sub-pixels.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: May 28, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Takumi Aragaki, Hiroshi Hasegawa, Masashi Kanai
  • Patent number: 8411211
    Abstract: A projection type video display device is provided, which is capable of displaying a plurality of kinds of input videos with different aspect ratios without requiring cumbersome adjustment operations.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: April 2, 2013
    Assignee: Panasonic Corporation
    Inventor: Tamotsu Akeyama
  • Patent number: 8330876
    Abstract: A projector includes: a light source; an image processing section adapted to perform an expansion process of an aspect ratio in either one of a horizontal direction and a vertical direction of an image to be formed by an image signal input; a light modulation element adapted to modulate light from the light source to form an image on which the expansion process is performed; a projection optical system adapted to project the image, formed by the light modulation element, on a projection surface; and an anamorphic zoom optical system adapted to be capable of changing a magnification ratio of the image with respect to a direction different from a direction, along which the expansion process is performed in the image processing section, out of the horizontal direction and the vertical direction.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: December 11, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Eiji Morikuni
  • Patent number: 8223275
    Abstract: A projector includes a projecting unit that projects a calibration image containing a plurality of types of pattern images having different shapes, a storing unit that stores correction data showing a correction value for each of the pattern images, a selecting unit that receives selection of a pattern image selected by a user from the pattern images, and a correcting unit that corrects distortion of an image projected by the projecting unit based on the correction value corresponding to the selection.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: July 17, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Shinji Ehara, Tadanori Aruga, Hiromasa Yamada, Kenji Tanaka, Hiroyuki Akahane, Masaki Uemori
  • Patent number: 8144264
    Abstract: An image processor that corrects image signals corresponding to sub-pixels which form one pixel includes: a shift amount storage section that stores shift amounts of display positions of display sub-pixels corresponding to the sub-pixels which form a display pixel with respect to a predetermined reference position within a display image; and an image signal correcting section that corrects image signals corresponding to sub-pixels, which form each pixel of an input image, on the basis of the shift amounts stored in the shift amount storage section. The image signal correcting section corrects image signals in which dummy image signals corresponding to dummy sub-pixels, which are provided outside sub-pixels in an endmost portion of the input image, are added to input image signals of the sub-pixels.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: March 27, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Takumi Aragaki, Hiroshi Hasegawa, Masashi Kanai
  • Patent number: 8134599
    Abstract: A scanning image display apparatus includes: a scanning unit rotating a mirror to scan a light flux from a light source; an input unit to input a display condition of an image; and a controller changing a rotation angle of the mirror in the scanning unit in accordance with a signal from the input unit. According to the scanning image display apparatus, the display condition (e.g., size, aspect ratio) of the image can be changed without using trimming.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: March 13, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuichi Sakaguchi, Shuichi Kobayashi
  • Patent number: 8111336
    Abstract: Briefly, in accordance with one or more embodiments, scanned beam projector may comprise a light source, a scan drive and a scanning platform to project an image onto a projection surface. The scan drive circuit is capable of at least partially correcting distortion in the projected image by varying an amplitude of the scan drive signal to at least partially compensate for the distortion in the projected image.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: February 7, 2012
    Assignee: Microvision, Inc.
    Inventors: Mark O. Freeman, Karlton D. Powell
  • Patent number: 8104899
    Abstract: A beam projection apparatus and method with automatic image adjustment. A beam projection apparatus includes an actuator module being operable to move the beam projection apparatus, a beam projector being operable to project images, and a control module being operable to search surrounding structures around the beam projection apparatus and select a plane portion of the surrounding structures as a screen, to control the actuator module to move the beam projection apparatus for image display on the selected plane portion, and to control the beam projector to project the images on the selected plane portion.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: January 31, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-Sin Ha, Dong-Soo Kim, Hyun-Sik Shim
  • Patent number: 8038303
    Abstract: Disclosed is a projection apparatus including: a video display control section 53 to project and display a video according to input video data; and a projection distance obtainment section 14 to irradiate to a projection plane where the video is projected with a laser and displayed by the video display control section 53, and to obtain a projection distance to the projection plane, wherein when the projection distance is obtained by the projection distance obtainment section 14, the video display control section 53 adjusts a display status of at least a first video area 66 corresponding to a laser ranging point 63 which is an area where the laser is irradiated to a display status for obtaining the projection distance so that the distance from the projection apparatus to the projection plane can be measured fast and with high accuracy.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: October 18, 2011
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hideaki Inoue
  • Patent number: 7959300
    Abstract: A projection image display device including a display plane for displaying an image, a projection mechanism projecting an image on the display plane, and an imaging mechanism arranged on the same side of the display plane as the projection mechanism for imaging the display plane. The imaging mechanism is arranged at a position where a position symmetric with respect to the display plane of the projection mechanism is out of the range of the field angle of the imaging mechanism. By arranging the imaging mechanism at a position where no direct reflecting light of the light source of the projection mechanism comes, it is possible to prevent generation of a hot spot.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: June 14, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiichiroh Hirahara, Akira Sakurai
  • Patent number: 7924349
    Abstract: A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for sweeping a composite laser beam as a pattern of linear scan lines on a planar projection surface and for causing selected pixels arranged along each linear scan line to be illuminated to produce an image of high quality and in color.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: April 12, 2011
    Assignee: Microvision, Inc.
    Inventors: Chinh Tan, Frederick F. Wood, Miklos Stern
  • Patent number: 7909470
    Abstract: An image projection method and a projector are provided to be able to change aspect ratio or resolution of a projection image, without setting of keystone correction again. The projector sets a displayable region with a shape according to an aspect ratio and a resolution of the projection image. The projector converts coordinates of the displayable region into coordinates in a screen coordinate system, and generates a rectangular area with a desired aspect ratio in a region corresponding to the displayable region in the screen coordinate system and a portion included in a projecting range. The projector converts the coordinates of a rectangular area into coordinates of a range corresponding to the rectangular area in the panel coordinate system, forms an image in a range corresponding to the rectangular area, and projects the projection image on the screen.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: March 22, 2011
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Ryouichi Yonezawa
  • Patent number: 7878664
    Abstract: A projector includes a projecting module for projecting a projecting image on a screen panel, an image sensor for capturing an image of an object which is located outside of the projecting module and faces toward the lens module, a light director, and a controlling unit. The projecting module has a lens module and a light source for emitting light transmitting through the lens module. The light director is movable between a first position where the light director is located outside of a light path associated with the lens module, and a second position where the light director is configured for directing light of the object through the lens module to be incident on the image sensor. The controlling unit controls the light director to move between the first and second positions.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: February 1, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Ming-Shan Chan, Sheng-An Wang
  • Patent number: 7855753
    Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: December 21, 2010
    Inventors: Knut Krogstad, Johan Henrik Litleskare, Randi Litleskare, legal representative
  • Patent number: 7845801
    Abstract: A lightweight, compact image projection module has a controller operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color. The controller has a video data channel for receiving video data from a host, and a control data channel for bidirectionally transmitting and receiving control data to and from the host. A plurality of input communication ports is provided on the controller. Each input communication port is operative for communicating the control data at a different communication standard. A selected one of the input communication ports having a communications standard matching the communications standard of the host is connected over the control data channel to the host.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: December 7, 2010
    Assignee: Symbol Technologies, Inc.
    Inventor: Michael Slutsky
  • Publication number: 20100220247
    Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.
    Type: Application
    Filed: February 8, 2010
    Publication date: September 2, 2010
    Inventors: Knut KROGSTAD, Johan Henrik LITLESKARE, Randi Litleskare
  • Publication number: 20100188589
    Abstract: An image adjusting device and method for image projection in an aircraft, in which vibration-induced excursions between a projection device and an associated projection surface are offset via the corresponding acquisition of position-time states in such a way that an image displayed on a display surface remains essentially unchanged.
    Type: Application
    Filed: June 5, 2008
    Publication date: July 29, 2010
    Applicant: AIRBUS OPERATIONS GMBH
    Inventor: Carsten Vogel
  • Patent number: 7701518
    Abstract: Systems and methods which can shift video to the edge of the display screen. The user can electrically and mechanically roll up or down the projection screen to fit the opposite edge. Further, the electrically shifted position can be memorized in memory, which will be easily recalled during future use. Also, to avoid displaying visible noise near the top edge of the video, the video may be shifted to avoid such noise being visible. The shifted position may be stored in memory to be recalled for future use.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: April 20, 2010
    Assignee: Optoma Technology, Inc.
    Inventors: Yau Wing Chung, Justin Halls
  • Patent number: 7695143
    Abstract: An image processing system and a projector project a calibration image onto a projection target, sense the calibration image to generate sensing information, and generate projection target region information based on the sensing information. The system and projector generate projection area information based on the sensing information, image distortion correction information based on the projection target region information and the projection area information, and correct an image signal based on the image distortion correction information so that image distortion is corrected.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: April 13, 2010
    Assignee: Seiko Epson Corporation
    Inventor: Masanobu Kobayashi
  • Patent number: 7679690
    Abstract: A geometry correction module for a fixed pixel raster projector to project an image onto a projection surface is provided. The geometry correction module includes a receiver and a geometry corrector. The receiver collects an input pixels grid that represents an input image. The geometry corrector generates an output pixels grid representing an output image that compensates for the geometry of the projection surface by repositioning image data interpolated from at least two input pixels. The output image represents an altered input image that when projected onto the projection surface will display a correctly proportioned input image. A method of correcting geometry distortion when projecting an image is also provided.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: March 16, 2010
    Inventors: Knut Krogstad, Johan Henrik Litleskare
  • Patent number: 7612909
    Abstract: An apparatus for detecting a mixed area in frames. An object extracting unit extracts a foreground object from an input image and generates an area-specified object formed of the foreground object and a value indicating that the foreground object belongs to a background area. A motion compensator compensates for the motion of the area-specified object based on a motion vector and positional information thereof. A subtracting unit subtracts the pixel value of a pixel belonging to a foreground object of a current frame from the corresponding pixel of the foreground object of a preceding frame, so as to obtain a frame difference between the pixels belonging to the foreground area. A threshold-value processor detects a mixed area based on the difference.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: November 3, 2009
    Assignee: Sony Corporation
    Inventors: Tetsujiro Kondo, Junichi Ishibashi, Takashi Sawao, Takahiro Nagano, Naoki Fujiwara, Toru Miyake, Seiji Wada
  • Patent number: 7607783
    Abstract: A document camera has an image processing apparatus, which acquires the contour of an image of an original by means of a Roberts filter. The image processing apparatus detects straight lines as candidates for forming an image of the original from the acquired contour and acquires the shape of a quadrangle of the original. The image processing apparatus determines the projection parameters showing the relationship between the shape of the image of the original and the shape of the actual original from the positions of the corners of the quadrangle and executes an operation of projection/transformation on the image of the original. The document camera outputs the image data of the image to a projector, which projects an image of the original on a screen according to the image data.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: October 27, 2009
    Assignee: Casio Computer Co., Ltd.
    Inventors: Keiichi Sakurai, Akihiko Nagasaka, Tetsuji Makino, Yoshihiro Teshima
  • Publication number: 20090201431
    Abstract: A image pickup unit picks up an image of a video projected by a projection unit and outputs the picked-up image. A control unit determines whether the picked-up image includes a projection video other than the video projected by the projection unit or not. If the control unit determines that the picked-up image includes a projection video other than the video projected by the projection unit, the control unit instructs a keystone correction unit to carry out keystone correction of the video signal in accordance with the picked-up image. The keystone correction unit carries out keystone correction of the input video signal or the output video signal so that an edge of the video projected by the projection unit contacts an edge of the projection video other than the video projected by the projection unit.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 13, 2009
    Applicant: Seiko Epson Corporation
    Inventor: Eiji Izumida
  • Patent number: 7520620
    Abstract: For a projector, a CPU references an exposure calculation object scope setting table stored in an exposure calculation object scope setting table storing unit, and sets the exposure calculation object scope based on a zoom volume detected by a zoom volume detector. An exposure calculation object scope for each zoom volume is stipulated in the exposure calculation object scope setting table. Next, an imaging control unit images an adjustment pattern image projected onto a screen by a CCD module, and calculates an exposure calculation value for the set exposure calculation object scope. Then, the imaging control unit controls at least one item among the shutter speed, gain, and aperture for the imaging unit to perform exposure adjustment so that the exposure calculation value is about equal to a specified exposure target value.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: April 21, 2009
    Assignee: Seiko Epson Corporation
    Inventor: Noriaki Miyasaka
  • Patent number: RE43721
    Abstract: The projector comprises an image forming panel that forms an effective panel image for modulating the light into an image light in an image forming area of a panel surface, and an image capturing unit for capturing a specific projection area wherein the image light corresponding to a specific area in the image forming area is projected. The projector calculates one or more edges of the outside perimeter lines of the screen and of the specific projection area by detecting plural points in a captured image. Based on the detection results, a post-correction image forming area is calculated, and trapezoidal distortion is corrected by forming the effective panel image within the post-correction image forming area. When only three or less of the four edges of the outside perimeter lines of the screen are detected, the projector calculates the post-correction image forming area based on the position and slope of the detected edge within the captured image.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: October 9, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Morio Matsumoto, Shiki Furui