Raster Shape Distortion Patents (Class 348/746)
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Patent number: 12154526Abstract: An image system dynamically updates drive sequences in an image system. Drive sequences are image display settings or display driving characteristics with which a display is operated. The image system may determine the drive sequence at least partially based on input from one or more sensors. For example, the image system may include sensors such as an inertial measurement unit, a light sensor, a camera, a temperature sensor, or other sensors from which sensor data may be collected. The image system may analyze the sensor data to calculate drive sequence settings or to select a drive sequence from a number of predetermined drive sequences. Displaying image content on a display includes providing the display with image data and includes operating the display with various drive sequences.Type: GrantFiled: December 15, 2023Date of Patent: November 26, 2024Assignee: Snap Inc.Inventors: Andrew Iverson, Howard V. Goetz, Glen R. Sands, Kevin Ferguson
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Patent number: 11962946Abstract: There is provided with an image processing apparatus that generates a display image to be displayed in a display system including a display area. An obtaining unit obtains one input image acquired through shooting by one image capturing apparatus. A generating unit generates the display image from the input image on the basis of a correspondence between a first projection plane corresponding to the input image and a second projection plane corresponding to the display area.Type: GrantFiled: July 30, 2020Date of Patent: April 16, 2024Assignee: Canon Kabushiki KaishaInventor: Masatoshi Ishii
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Patent number: 11893957Abstract: An image system dynamically updates drive sequences in an image system. Drive sequences are image display settings or display driving characteristics with which a display is operated. The image system may determine the drive sequence at least partially based on input from one or more sensors. For example, the image system may include sensors such as an inertial measurement unit, a light sensor, a camera, a temperature sensor, or other sensors from which sensor data may be collected. The image system may analyze the sensor data to calculate drive sequence settings or to select a drive sequence from a number of predetermined drive sequences. Displaying image content on a display includes providing the display with image data and includes operating the display with various drive sequences.Type: GrantFiled: January 17, 2023Date of Patent: February 6, 2024Assignee: Snap Inc.Inventors: Andrew Iverson, Howard V. Goetz, Glen R. Sands, Kevin Ferguson
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Patent number: 11850499Abstract: According to an augmented reality based interactive sports device using a LiDAR sensor proposed in the present invention, it is possible to allow enjoying sports indoors only with the user's body without requiring a user to wear a separate object or device by projecting an image for sports content on the floor and tracking a user motion of the sports content using the LiDAR sensor to control the interaction between the sports content and the user, allow using the floor surface efficiently due to wide range of motion tracking, and allow quickly and accurately tracking a motion of each user by tracking a user motion using two LiDAR sensors even when multiple users are using sports content at the same time.Type: GrantFiled: October 29, 2020Date of Patent: December 26, 2023Assignee: TWOHANDSINTERACTIVE CO., LTD.Inventor: Wangyun Yoo
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Patent number: 11652968Abstract: A method for implementing a synchronous rising, falling, or translation of a projection image along with the movement of a rollable screen is provided. After a system is powered on and started, a projection screen first reports a current position of a screen to a project host via a communication link. The projection host performs a preprocessing on a projection image according to the current screen position n0 obtained from the projection screen and an image is projected onto the projection screen. The projection host informs the projection screen via the communication link and confirms that the current projection image is aligned according to the current position of the projection screen. After the projection screen obtains confirmation information from the projection host, the projection screen is driven to reach the next position, and the projection host obtains the next specific position of the projection screen via the communication link.Type: GrantFiled: September 10, 2020Date of Patent: May 16, 2023Assignee: JIANGSU SHUNHE INTERNET OF THINGS TECHNOLOGY CO., LTD.Inventors: Chunguang Bi, Yuehua Shi
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Patent number: 10656893Abstract: A display device includes a screen, first and second projectors, a detector, and a controller. The screen has first and second surfaces. The first projector projects a first horizontally non-inverted image as viewed from the first surface. The second projector projects a second horizontally non-inverted image as viewed from the second surface. The detector detects a person at least viewing one of the first and second surfaces. The controller controls switching of an operation between the first and second projectors in accordance with a detection result of the detector.Type: GrantFiled: February 23, 2018Date of Patent: May 19, 2020Assignee: FUJI XEROX CO., LTD.Inventors: Masafumi Ono, Tomotaka Matsuyuki, Sayaka Hirose, Yuri Takeuchi
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Patent number: 10638103Abstract: An image projection apparatus displays includes a lens attachable portion to which a plurality of projection lenses having different optical characteristics are interchangeably attached, a drive signal producer configured to produce, for each color light beam, a drive signal used to drive the light modulation element based on an input image signal, and an information acquirer configured to acquire information on an optical characteristic of the projection lens attached to the lens attachable portion. The information on the optical characteristic of the projection lens contains information on a chromatic aberration of the projection lens. The drive signal producer reduces influence of a shift below the modulation pixel caused by the chromatic aberration of the projection lens by using the information on the optical characteristic, and produces the drive signal corresponding to at least one of the plurality of color light beams.Type: GrantFiled: March 8, 2018Date of Patent: April 28, 2020Assignee: CANON KABUSHIKI KAISHAInventor: Keisuke Kobayashi
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Patent number: 10559060Abstract: The present invention includes a) creating geometry data of a theater screen, and mapping position information of seating on the geometry data to reconstruct a virtual theater structure, b) generating a grid mesh for each seat of the theater screen without changing edges of the theater screen, and c) generating a compensation map with minimized distortion of the grid mesh for each seat, and based on this, single-sampling compensating a pixel of an image to be displayed on the theater screen by the compensation map.Type: GrantFiled: December 7, 2017Date of Patent: February 11, 2020Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Junyong Noh, Jungjin Lee, Sangwoo Lee, Bumki Kim
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Patent number: 10459328Abstract: A display device includes a screen, first and second projectors, and a controller. The screen has first and second surfaces. The first projector projects a first horizontally non-inverted image as viewed from the first surface. The second projector projects a second horizontally non-inverted image as viewed from the second surface. The controller controls switching of an operation between the first and second projectors and also performs control so that the first horizontally non-inverted image projected on the first surface will be projected on the second surface and so that the second horizontally non-inverted image projected on the second surface will be projected on the first surface.Type: GrantFiled: February 23, 2018Date of Patent: October 29, 2019Assignee: FUJI XEROX CO., LTD.Inventors: Masafumi Ono, Tomotaka Matsuyuki, Sayaka Hirose, Yuri Takeuchi
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Patent number: 10401597Abstract: A projection optical system is constituted by, in order from the reduction side, a first optical system constituted by a plurality of lenses for forming an image displayed by image display elements as an intermediate image, and a second optical system constituted by a plurality of lenses for forming the intermediate image on a magnification side conjugate plane. Conditional Formula (1), being that 0.020<enP/TL2<0.160, is satisfied, wherein enP is the distance along the optical axis from the surface most toward the magnification side in the second optical system to the position of an entrance pupil in the case that the magnification side is a light entry side, and TL2 is the distance along the optical axis from the surface most toward the reduction side in the second optical system to the surface most toward the magnification side in the second optical system.Type: GrantFiled: February 2, 2016Date of Patent: September 3, 2019Assignee: FUJIFILM CorporationInventor: Masaru Amano
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Patent number: 10268318Abstract: Examples disclosed herein relate to aligning content displayed from a projector on to a touch sensitive mat. Examples include detecting a border of the mat, wherein the mat includes a surface area of a first spectral reflectance characteristic on to which the projector is to project the content, and the border of a second spectral reflectance characteristic different from the first spectral reflectance characteristic surrounding a perimeter of the surface area. As an example, detecting the border of the mat generally includes differentiating the second spectral reflectance characteristic of the border from the first spectral reflectance characteristic of the surface area. Examples include detecting a border of the content displayed on to the mat, and adjusting projector settings for the border of the content displayed on to the mat to fit within the detected border of the mat.Type: GrantFiled: January 31, 2014Date of Patent: April 23, 2019Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jinman Kang, David Bradley Short, Daniel R Tretter, Kar-Han Tan, Yun Tang, Otto Sievert
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Patent number: 10218951Abstract: Briefly, in accordance with one or more embodiments, a MEMS scanned beam projector includes a light source to emit a light beam, a scanning platform to redirect the light beam impinging on the platform, and a display controller to control the light source and the scanning platform to cause the scanning platform to scan the light beam in a vertical direction and a horizontal direction in a scan pattern to project an image onto a projection surface. The display controller is configured to correct for image distortion in the projected image by providing a compensated drive signal to the scanning platform to compensate for the image distortion.Type: GrantFiled: May 18, 2018Date of Patent: February 26, 2019Assignee: Microvision, Inc.Inventors: Jari Honkanen, Robert James Jackson, P. Selvan Viswanathan, Jonathan A. Morarity, David W. Armour
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Patent number: 10218925Abstract: The present invention discloses a method and an apparatus for correcting lens distortion. In some feasible implementation manners of the present invention, image data acquired from a lens is corrected in a horizontal direction; the image data corrected in the horizontal direction is written into a dynamic memory; image data in the dynamic memory is corrected in a vertical direction; and lens distortion correction is performed in two steps: in the horizontal direction and in the vertical direction, so that lens distortion correction is implemented at a low cost. The present invention further discloses a corresponding apparatus for correcting lens distortion.Type: GrantFiled: May 22, 2015Date of Patent: February 26, 2019Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Shuiping Li, Angang Deng, Cong Xu
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Patent number: 10180581Abstract: The present invention discloses an image correction method for an adjustable virtual reality helmet. The method comprises the steps of: pre-storing in the helmet a corresponding relation table between a configuration parameter and an image correction parameter and an image correction formula of the helmet; acquiring a real-time configuration parameter of the helmet; searching in the corresponding relation table an image correction parameter corresponding to a configuration parameter closest to the real-time configuration parameter; and performing image correction by calling the image correction formula based on a searched image correction parameter. The present invention also provides an image correction system for an adjustable virtual reality helmet. The present invention can provide better image correction effects for an adjustable virtual reality helmet.Type: GrantFiled: September 1, 2016Date of Patent: January 15, 2019Assignee: Beijing Pico Technology Co., Ltd.Inventors: Ligang Li, Yunlong Yang, Xiaogang Wang
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Patent number: 10132620Abstract: A method for using structured light in a handheld projection device is provided that includes projecting a structured light pattern in at least one portion of a frame being projected by the handheld projection device, wherein the at least one portion of the frame is a subset of the frame, capturing an image of the projected frame, computing scene depth information based on the structured light pattern in the captured image, and using the scene depth information in processing of a subsequent frame of the video stream.Type: GrantFiled: June 30, 2017Date of Patent: November 20, 2018Assignee: Texas Instruments IncorporatedInventors: Vivienne Sze, Goksel Dedeoglu, Vinay Sharma
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Patent number: 9696145Abstract: A method for using structured light in a handheld projection device is provided that includes projecting a structured light pattern in at least one portion of a frame being projected by the handheld projection device, wherein the at least one portion of the frame is a subset of the frame, capturing an image of the projected frame, computing scene depth information based on the structured light pattern in the captured image, and using the scene depth information in processing of a subsequent frame of the video stream.Type: GrantFiled: February 20, 2014Date of Patent: July 4, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Vivienne Sze, Goksel Dedeoglu, Vinay Sharma
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Patent number: 9565394Abstract: A system and a method for displaying an image are disclosed herein. The system includes a surface on which the image is displayed and a display rendering device to display the image on the surface. The system also includes a capture device to detect the surface, a processor, and a non-transitory computer-readable storage medium including instructions that cause the processor to: determine dimensions of the surface, determine a first orientation of the surface, convert the image to display on the surface based on the determined dimensions of the surface and the determined first orientation of the surface, detect repositioning of the surface to a second orientation, determine the second orientation of the surface, and convert the image to display on the surface based on the determined dimensions of the surface and the determined second orientation of the surface relative to the capture device.Type: GrantFiled: April 24, 2012Date of Patent: February 7, 2017Assignee: Hewlett-Packard Development Company, L.P.Inventors: Geoffrey C Mayne, David Bradley Short, Daniel Weinstein, Dan Riedler
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Patent number: 9478053Abstract: An image display device capable of performing a shape correction of an image displayed on an image display surface having a corner composed of a plurality of surfaces is provided. The image display device includes: an OSD processing unit that displays identification images respectively corresponding to four sides of an image; an identification image selection unit that accepts an operation of selecting the displayed identification image; a moving operation unit that accepts an operation of moving a node set at a predetermined position of the side corresponding to the selected identification image; and an image processing unit that corrects the shape of the image by moving, based on the operation accepted with the moving operation unit, the node of the side of the image displayed on an image display surface composed of a plurality of surfaces.Type: GrantFiled: September 30, 2013Date of Patent: October 25, 2016Assignee: SEIKO EPSON CORPORATIONInventors: Jun Yoshimura, Makoto Kobayashi
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Patent number: 9445066Abstract: A CPU controls an attitude adjustment unit to change the lengths of legs of an electric leg part independently of each other so that a roll angle is changed to roll a projected image, and controls an image converter to correct the projected image to be a rectangular image on a projection target based on the changed roll angle.Type: GrantFiled: March 21, 2014Date of Patent: September 13, 2016Assignee: CASIO COMPUTER CO., LTD.Inventor: Hideaki Inoue
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Patent number: 9317972Abstract: Method and apparatus for displaying augmented reality contents are disclosed. The method may include controlling a camera to scan an environment in view of a user, identifying a set of surfaces in the environment for displaying user interface windows according to characteristics of the environment, prioritizing a set of augmented reality contents for display with respect to the set of surfaces in the environment, and displaying the set of augmented reality contents on the set of surfaces in a display. Characteristics of the environment comprise at least aspect ratio of the set of surfaces with respect to the set of augmented reality contents to be displayed, and/or background color of the set of surfaces with respect to the set of augmented reality contents to be displayed.Type: GrantFiled: December 18, 2012Date of Patent: April 19, 2016Assignee: QUALCOMM IncorporatedInventors: Babak Forutanpour, Shriram Ganesh, Daniel S. Baker, Devender A. Yamakawa
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Patent number: 9189988Abstract: Techniques involving the management of display parameters are disclosed. For example, an apparatus may include a display, a radio module, and a control module. The display employs various operational parameters, which can take on different values. Exemplary parameters include refresh rate and/or pixel clock rate. The radio module may receive a wireless signal at one or more reception frequencies. The control module may select values for these operational parameters of the display. This selection may be made according to characteristics of interference that would be emitted from the display at the one or more reception frequencies. Upon making this selection, the control module may direct the display to employ the selected parameter values.Type: GrantFiled: December 14, 2006Date of Patent: November 17, 2015Assignee: QUALCOMM IncorporatedInventors: Jerome C. Tu, Olivier Boireau, Isabel Mahe, Wen Zhao, Yury Fomin, Jianxiong Shi, Alexander Fertelmeister
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Patent number: 9055242Abstract: A method of operating an image sensor chip including a motion sensor pixel sensing a motion of an object and a depth sensor pixel, the method including the operations of activating either the depth sensor pixel or the motion sensor pixel according to a mode selection signal, and processing a pixel signal output by either the activated depth sensor pixel or the activated motion sensor pixel.Type: GrantFiled: March 15, 2013Date of Patent: June 9, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Chan Kim, Hae Kyoung Kong
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Publication number: 20150103257Abstract: An image processing device used for a projector displays an image by projecting the image on a projection surface. A detection image generation section adapted to generate a detection image, which is an image adapted to detect a state of a projection image displayed on the projection surface, and includes a plurality of detection image parts is provided. Each of the detection image parts includes a plurality of regions having respective luminance values different from each other. The detection image generation section changes the luminance distribution of each of the detection image parts of the detection image to be generated so that the maximum luminance values of the detection image parts included in the taken detection image obtained by taking the detection image projected on the projection surface fall within an allowable range.Type: ApplicationFiled: March 19, 2013Publication date: April 16, 2015Inventor: Yoshitaka Nakashin
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Publication number: 20150092114Abstract: A keystone correction apparatus and method of curved display are provided. The apparatus includes a curved screen that displays an image and a projector that has an infrared lighting device to irradiate infrared light to the curved screen. An infrared imaging device is configured to capture infrared light reflected from the curved screen. A controller is configured to determine whether the curved screen is distorted using an infrared image captured by the infrared imaging device and perform a keystone correction.Type: ApplicationFiled: December 29, 2013Publication date: April 2, 2015Applicant: HYUNDAI MOTOR COMPANYInventor: Jong Bok Lee
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Patent number: 8985782Abstract: 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: GrantFiled: September 27, 2012Date of Patent: March 24, 2015Assignee: Seiko Epson CorporationInventors: Jun Yoshimura, Makoto Kobayashi
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Patent number: 8944610Abstract: An image projection apparatus includes a light source; a projected image outputting unit having multiple mirrors arranged in a matrix, to which radiating light emitted from the light source while controlling an angle of a light reflection face of each of the mirrors; a control unit controls the angle of light reflection face of the mirrors using the a division half-toning control based on image data of a projected image, and settings of control parameters used for the time division half-toning control; and an image capturing device to capture the projected mage. When the control unit detects a false contour in a projected test pattern image based on image data of the projected test pattern image captured by the image capturing device, the control unit corrects the control parameters for the time division half-toning control based on detection of the false contour.Type: GrantFiled: April 10, 2013Date of Patent: February 3, 2015Assignee: Ricoh Company, Ltd.Inventor: Otoichi Nakata
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Publication number: 20150029407Abstract: An image processing apparatus generates image data for projection by applying a deformation process to obtained image data based on an input parameter related to the deformation process. The image processing apparatus prohibits execution of the deformation process if it is determined that a magnification related to the deformation process based on the input parameter with respect to the obtained image data is out of a predetermined range.Type: ApplicationFiled: July 11, 2014Publication date: January 29, 2015Inventors: Tetsurou Kitashou, Akihiro Takamura
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Patent number: 8941785Abstract: 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: GrantFiled: March 25, 2014Date of Patent: January 27, 2015Assignee: Seiko Epson CorporationInventor: Manabu Saigo
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Publication number: 20150009416Abstract: Provided is a display device including an image display unit configured to display an image with a plurality of pixels arranged on a display surface, an eyepiece optical unit configured to project the display surface of the image display unit in a manner that a predetermined angle of view is obtained, and an image correction unit configured to correct a display image on the display surface at a position of each of representative pixels which are discretely located on the display surface, on the basis of distortion generated due to the eyepiece optical unit.Type: ApplicationFiled: December 17, 2012Publication date: January 8, 2015Applicant: SONY CORPORATIONInventors: Ken Tamayama, Akira Fujinawa, Masayuki Shimizu, Kiyoshi Ikeda
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Patent number: 8913200Abstract: An encoding apparatus for inputting a first image signal and a second image signal from an input source different from an input source of the first image signal adaptively decides a first bit rate and a second bit rate which are respectively assigned to a first encoding unit for encoding the input first image signal and a second encoding unit for encoding the input second image signal on the basis of the first image signal, on the basis of photographing mode information or distortion ratios of encoding by the encoding units.Type: GrantFiled: November 4, 2011Date of Patent: December 16, 2014Assignee: Canon Kabushiki KaishaInventor: Koji Togita
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Patent number: 8894217Abstract: An image projection apparatus includes a light source; a projected image outputting unit having multiple mirrors arranged in a matrix, to which radiating light emitted from the light source while controlling an angle of a light reflection face of each of the mirrors; a control unit controls the angle of light reflection face of the mirrors using the a division half-toning control based on image data of a projected image, and settings of control parameters used for the time division half-toning control; and an image capturing device to capture the projected mage. When the control unit detects a false contour in a projected test pattern image based on image data of the projected test pattern image captured by the image capturing device, the control unit corrects the control parameters for the time division half-toning control based on detection of the false contour.Type: GrantFiled: April 10, 2013Date of Patent: November 25, 2014Assignee: Ricoh Company, Ltd.Inventor: Otoichi Nakata
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Patent number: 8866976Abstract: A projector capable of notifying the user of the fact that the installation angle has been varied when the projector is in operation is provided. The projector includes an angle detector adapted to detect an installation angle of the projector, a keystone distortion correction device adapted to perform a keystone distortion correction of a projection image projected on the projection surface based on the installation angle detected by the angle detector, and a controller adapted to record a variation in the installation angle as installation angle variation information on the storage device in a case in which the angle detector detects the variation when the projector is in operation, and then announce occurrence of the variation in the installation angle in a case in which the installation angle variation information is recorded on the storage device in a power-OFF sequence of the projector.Type: GrantFiled: May 9, 2014Date of Patent: October 21, 2014Assignee: Seiko Epson CorporationInventor: Takashi Ozawa
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Patent number: 8820944Abstract: A portable image projection device has a housing with first and second members pivotable between device folded and unfolded positions. First lens optics mounted within the first member are configured for projecting light modulated by a spatial light modulator along an optical axis through a first aperture with a first throw ratio with the device in the folded position. A second lens optics element movably mounted within the first member is configured for selective movement between positions of non-intersection and intersection with the optical axis. The second lens optics element is configured for cooperating with at least part of the first lens optics for projecting the light modulated by the spatial light modulator along the optical axis through a second aperture with a second throw ratio less than the first throw ratio with the device in the unfolded position.Type: GrantFiled: October 24, 2012Date of Patent: September 2, 2014Assignee: Texas Instruments IncorporatedInventor: Jose S. Vasquez
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Patent number: 8794768Abstract: A projection display device including: an image projection section configured to project an image toward a projection surface; an imaging section configured to shoot the image projected on the projection surface; a location specifying section configured to specify a location of a position indication light based on a shot image by the imaging section; and a display control section configured to set a projection range of the image to a range including an image area corresponding to the location specified by the location specifying section, and to alter the projection range of the image in accordance with the set projection range.Type: GrantFiled: October 26, 2011Date of Patent: August 5, 2014Assignee: Seiko Epson CorporationInventor: Takaaki Ozawa
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Patent number: 8789954Abstract: A front projection display system for a vehicle including a pico projector including keystone correction; and, a retractable pico front projector screen operatively connected to the pico projector. In one embodiment, a common housing contains the pico projector and the retractable pico front projector screen. In another embodiment the pico projector is mounted within the protective covering. In some embodiments the front projector screen is motor driven and in other embodiments it operated by hand. The present invention is particularly advantageous in an aircraft environment where size and weight considerations are imperative.Type: GrantFiled: June 9, 2010Date of Patent: July 29, 2014Assignee: Rockwell Collins, Inc.Inventors: Steven C. Atkins, Chris A. Jameson, Timothy J. Bohr, James R. Dan, David F. Little, Alfred S. Alvarado
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Patent number: 8733943Abstract: In a back-projection image display device, image light outputted from a projection device is reflected by a reflection mirror held by a base frame and projected onto the back of a screen, to display an image on the screen. An image distortion correcting mechanism includes adjustment mechanisms that deform the reflection mirror, drive units that generate driving force necessary for the deformation of the reflection mirror by the adjustment mechanisms, and a control substrate that supplies power to the drive units. The control substrate supplies power to the drive units in response to a control signal supplied from a remote control unit. This allows pin distortion and barrel distortion, as well as trapezial distortion to be corrected by remote control in the back-projection image display device.Type: GrantFiled: September 25, 2007Date of Patent: May 27, 2014Assignee: Mitsubishi Electric CorporationInventor: Toshitaka Tachibana
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Patent number: 8727539Abstract: In at least one embodiment of the disclosure, a projector comprises an imaging unit that photographs a projection surface and acquires a first photographed image during a projection of a featured image at a first time point and acquires a second photographed image during the projection of the featured image at a second time point different from the first time point. An image processing unit generates a reference image based on the first photographed image and generates a comparative image based on the second photographed image. A movement detecting unit detects a change in a relative position of the projector with respect to the projection surface by using the reference image and the comparative image generated by the image processing unit.Type: GrantFiled: October 25, 2011Date of Patent: May 20, 2014Assignee: Seiko Epson CorporationInventor: Akinari Todoroki
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Patent number: 8717419Abstract: An image processing apparatus executes a distortion correction on coordinates of a target pixel in a virtual viewpoint image based on distortion characteristics of a virtual camera and calculates coordinates in the virtual viewpoint image after the distortion correction. The image process apparatus calculates ideal coordinates in a captured image from the coordinates in the virtual viewpoint image after the distortion correction and calculates real coordinates in the captured image from the ideal coordinates in the captured image based on distortion characteristics of an imaging unit. The image process apparatus calculates a pixel value corresponding to the real coordinates from image data of the virtual viewpoint image and corrects the pixel value corresponding to the real coordinates based on ambient light amount decrease characteristics of the imaging unit and ambient light amount decrease characteristics of the virtual camera.Type: GrantFiled: April 13, 2011Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Yahata, Takuya Kotani
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Patent number: 8690337Abstract: A projector producing an imaginary input plane with high operability is provided. A projector according to an embodiment projects a VUI screen picture onto a desk, and projects a main projection screen picture to a wall. The projector includes a light receiving element. The light receiving element is arranged in a position where light emitted toward the desk (VUI screen picture) and reflected (or scattered) by an object near the desk enters. The projector calculates a position of the object based on light sensing timing by the light receiving element and light scan positions at various points in time. The projector changes a projected screen picture when it determines that object is simultaneously in contact with a plurality of portions of the VUI screen picture and at least one of contact positions moves.Type: GrantFiled: March 31, 2010Date of Patent: April 8, 2014Assignee: Funai Electric Co., Ltd.Inventors: Hiroshi Nishigaki, Atsuya Hirano, Atsuhiko Chikaoka, Ken Nishioka
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Patent number: 8690348Abstract: 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: GrantFiled: November 10, 2011Date of Patent: April 8, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Jeong Nam Yeom, Sung Hoon Kim, Joon Myun Cho, Joo Chan Sohn
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Rear projection imaging system with image warping distortion correction system and associated method
Patent number: 8643792Abstract: A rear projection imaging system with an image warping distortion correction system using a camera and processing unit to generate a warping map that corrects for image distortion. The warping map is generated in an iterative process by displaying a known pattern on a viewing screen and, through the use of a camera, having a microprocessor determine the location and shape of the pattern on the screen. The microprocessor then compares the displayed image to the original reference image, calculates the distortion effects present in the projection optics, and generates a warping map.Type: GrantFiled: July 24, 2012Date of Patent: February 4, 2014Assignee: Fakespace Labs, Inc.Inventors: Ian E. McDowall, Mark T. Bolas -
Patent number: 8579443Abstract: Briefly, in accordance with one or more embodiments, a scanned beam display, comprises a light source to generate a beam to be scanned and a scanning platform to scan the beam into an exit cone. The scanning platform receives the beam at a selected feed angle, and the scanning platform has a surface structure to redirect the exit cone at an exit angle that is less than the feed angle.Type: GrantFiled: June 30, 2010Date of Patent: November 12, 2013Assignee: Microvision, Inc.Inventors: Joshua M. Hudman, Wyatt O. Davis, Mark O. Freeman, Mark P. Helsel, David Roy Bowman, Kelly D. Linden
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Patent number: 8573780Abstract: A projection-type display apparatus includes a display unit having a first effective area that is the largest usable area for a display, and a geometric distortion corrector configured to correct a geometric distortion by performing, for an input image that is superimposed onto an image of a second effective area that is set in and smaller than the first effective area and is a virtual effective area whose geometric distortion has not yet been corrected, enlargement processing so that a third effective area that is a post-correction virtual effective area can have a portion located in an area between the first effective area and the second effective area and the second effective area can be enlarged.Type: GrantFiled: December 14, 2010Date of Patent: November 5, 2013Assignee: Canon Kabushiki KaishaInventor: Atsushi Ishii
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Patent number: 8553149Abstract: A television leveling module determines, using at least one accelerometer module in response to activation of the television leveling module, an angle of orientation relative to horizontal of a television coupled to a horizontal level-adjustable mounting assembly. An indication of the angle of orientation relative to horizontal is displayed on a television display. The display of the indication of the angle of orientation relative to horizontal of the television is iteratively updated in response to detected adjustments of the angle of orientation. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.Type: GrantFiled: July 9, 2010Date of Patent: October 8, 2013Assignee: Sony CorporationInventor: Frederick W. Ansfield
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Patent number: 8545025Abstract: 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: GrantFiled: September 29, 2010Date of Patent: October 1, 2013Assignee: Seiko Epson CorporationInventor: Naoki Suzuki
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Patent number: 8534844Abstract: 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: GrantFiled: January 10, 2011Date of Patent: September 17, 2013Assignee: Lenovo (Singapore) Pte. Ltd.Inventors: Rod D. Waltermann, Scott Edwards Kelso, John Carl Mese, Nathan J. Peterson, Arnold S. Weksler
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Patent number: 8529069Abstract: A projection apparatus which projects an image onto a projection plane based on an input image signal, the apparatus comprises: a division unit configured to divide an image represented by the input image signal into a plurality of regions; a deformation unit configured to deform various types of shapes of the images divided by the division unit; a combination unit configured to combine the images deformed by the deformation unit; and a projection unit configured to project the image combined by the combination unit onto the projection plane.Type: GrantFiled: April 21, 2011Date of Patent: September 10, 2013Assignee: Canon Kabushiki KaishaInventor: Nobuhiro Oka
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Patent number: 8485668Abstract: 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: GrantFiled: May 28, 2010Date of Patent: July 16, 2013Assignee: Microsoft CorporationInventors: Chunhui Zhang, Ji Zhao, Chunshui Zhao, Rui Gao
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Patent number: 8480237Abstract: A projector includes a light modulation section provided with a plurality of pixels arranged, and adapted to modulate light from a light source by the pixel, and when executing a keystone distortion correction on an image to be projected on a projection surface in response to an operation of an operation section, a maximum pixel area, which is a maximum area in which an image of the light modulation section is formed, and an image forming area in which the image to be the object of the keystone distortion correction is formed are projected simultaneously on the projection surface.Type: GrantFiled: February 19, 2009Date of Patent: July 9, 2013Assignee: Seiko Epson CorporationInventor: Akihiko Tamura
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Patent number: 8425050Abstract: A projection display device includes: a projection section having an optical system; a parameter obtaining section adapted to obtain a first parameter corresponding to the projection angle showing a relative posture of the projection display device to the projection surface; a vanishing point calculation section adapted to calculate a position of a vanishing point based on the first parameter; an actual zoom ratio obtaining section adapted to obtain an actual zoom ratio; a parameter calculating section adapted to correct the first parameter based on a fixed reference zoom ratio and the actual zoom ratio to thereby calculate a second parameter; and a keystone correction section adapted to perform a keystone correction of the image based on the fixed reference zoom ratio and the second parameter.Type: GrantFiled: September 14, 2010Date of Patent: April 23, 2013Assignee: Seiko Epson CorporationInventor: Shiki Furui