Patents by Inventor Trevor Akitt
Trevor Akitt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9274615Abstract: An interactive input system comprises at least two imaging assemblies capturing image frames of a region of interest from different vantages, each imaging assembly comprising an image sensor and signal processing circuitry implemented on an application specific integrated circuit (ASIC), image data acquired by the image sensor being pre-processed by the signal processing circuitry; and processing structure processing pre-processed image data output by the imaging assemblies to determine the location of at least one pointer within the region of interest.Type: GrantFiled: November 13, 2012Date of Patent: March 1, 2016Assignee: PixArt Imaging Inc.Inventors: Clinton Lam, Lawrence Bruce Hewitt, Trevor Akitt, Charles Ung
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Patent number: 8902195Abstract: An input panel for an interactive input system comprises an optical waveguide; a first radiation source directing radiation into said optical waveguide, said radiation undergoing total internal reflection within said optical waveguide; a diffusion layer adjacent to and on one side of the optical waveguide, totally internally reflected light being frustrated and escaping the optical waveguide in response to pointer contacts on the diffusion layer; a second radiation source directing radiation towards another side of the optical waveguide that is opposite the one side; and at least one imaging device having a field of view looking at the optical waveguide and capturing image frames, wherein said first and second radiation sources are turned on and off in succession and wherein said first radiation source is turned off when said second radiation source is on and wherein said first radiation source is turned on when said second radiation source is off.Type: GrantFiled: September 1, 2010Date of Patent: December 2, 2014Assignee: SMART Technologies ULCInventors: Grant McGibney, Gerald Morrison, Charles Ung, Trevor Akitt, Ed Tse, Erik Benner, Jamie Duncalf
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Patent number: 8537134Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: GrantFiled: July 20, 2012Date of Patent: September 17, 2013Assignee: SMART Technologies ULCInventors: Gerald Morrison, Trevor Akitt, Scott Su
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Publication number: 20120280943Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: ApplicationFiled: July 20, 2012Publication date: November 8, 2012Applicant: SMART TECHNOLOGIES ULCInventors: GERALD MORRISON, TREVOR AKITT, SCOTT SU
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Patent number: 8228304Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: GrantFiled: June 11, 2009Date of Patent: July 24, 2012Assignee: SMART Technologies ULCInventors: Gerald Morrison, Trevor Akitt, Scott Su
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Publication number: 20110050650Abstract: An input panel for an interactive input system comprises an optical waveguide; a first radiation source directing radiation into said optical waveguide, said radiation undergoing total internal reflection within said optical waveguide; a diffusion layer adjacent to and on one side of the optical waveguide, totally internally reflected light being frustrated and escaping the optical waveguide in response to pointer contacts on the diffusion layer; a second radiation source directing radiation towards another side of the optical waveguide that is opposite the one side; and at least one imaging device having a field of view looking at the optical waveguide and capturing image frames, wherein said first and second radiation sources are turned on and off in succession and wherein said first radiation source is turned off when said second radiation source is on and wherein said first radiation source is turned on when said second radiation source is off.Type: ApplicationFiled: September 1, 2010Publication date: March 3, 2011Applicant: SMART Technologies ULCInventors: Grant McGibney, Gerald Morrison, Charles Ung, Trevor Akitt, Ed Tse, Erik Benner, Jamie Duncalf
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Publication number: 20100060613Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: ApplicationFiled: June 11, 2009Publication date: March 11, 2010Applicant: SMART Technologies ULCInventors: Gerald Morrison, Trevor Akitt, Scott Su
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Patent number: 7619617Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: GrantFiled: September 28, 2005Date of Patent: November 17, 2009Assignee: Smart Technologies ULCInventors: Gerald Morrison, Trevor Akitt, Scott Su
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Publication number: 20070165007Abstract: An interactive input system comprises at least two imaging devices associated with a region of interest. The at least two imaging devices acquire images of the region of interest from different locations and have overlapping fields of view. At least one receiver is operable to receive data output by an active pointer when the pointer is both within and outside the fields of view of the imaging devices. Processor structure processes data acquired by the at least two imaging devices and the at least one receiver to detect the existence of an active pointer and to determine the location of the pointer within the region of interest.Type: ApplicationFiled: January 13, 2006Publication date: July 19, 2007Inventors: Gerald Morrison, Trevor Akitt, Vaughn Keenan
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Patent number: 7184030Abstract: A camera-based touch system includes at least one pair of cameras having overlapping fields of view and a touch surface encompassed within the overlapping fields of view across which a pointer is moved. The cameras of the at least one pair acquire images at intervals asynchronously. In order to estimate the position of the pointer relative to the touch surface from image data acquired by the at least one pair of cameras, the images are synthetically synchronized. During this process, for each camera in the pair, each acquired image is processed to determine the position of the pointer therein and the position of the pointer is recorded together with a timestamp representing the time elapsed between a reference point common to the cameras and the time the image was acquired.Type: GrantFiled: December 2, 2003Date of Patent: February 27, 2007Assignee: Smart Technologies Inc.Inventors: Randy McCharles, Gerald Morrison, Steve Worthington, Trevor Akitt
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Publication number: 20060022962Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: ApplicationFiled: September 28, 2005Publication date: February 2, 2006Inventors: Gerald Morrison, Trevor Akitt, Scott Su
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Patent number: 6954197Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: GrantFiled: November 15, 2002Date of Patent: October 11, 2005Assignee: Smart Technologies Inc.Inventors: Gerald Morrison, Trevor Akitt, Scott Su
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Publication number: 20040108996Abstract: A camera-based touch system includes at least one pair of cameras having overlapping fields of view and a touch surface encompassed within the overlapping fields of view across which a pointer is moved. The cameras of the at least one pair acquire images at intervals asynchronously. In order to estimate the position of the pointer relative to the touch surface from image data acquired by the at least one pair of cameras, the images are synthetically synchronized. During this process, for each camera in the pair, each acquired image is processed to determine the position of the pointer therein and the position of the pointer is recorded together with a timestamp representing the time elapsed between a reference point common to the cameras and the time the image was acquired.Type: ApplicationFiled: December 2, 2003Publication date: June 10, 2004Inventors: Randy McCharles, Gerald Morrison, Steve Worthington, Trevor Akitt
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Publication number: 20040095318Abstract: A touch system includes a touch surface and at least two cameras associated with the touch surface. The at least two cameras acquire images of the touch surface from different locations and having overlapping fields of view. A digital signal processor is associated with each camera. The digital signal processors process pixel data acquired by selected pixel subsets of the at least two digital cameras to generate pointer characteristic data when a pointer exists in the acquired images. The pointer characteristic data identifies edges of the pointer. A master digital signal processor triangulates the edge information in the pointer characteristic data to determine a bounding area that represents a pointer perimeter.Type: ApplicationFiled: November 15, 2002Publication date: May 20, 2004Inventors: Gerald Morrison, Trevor Akitt, Scott Su
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Publication number: 20040001144Abstract: A camera-based touch system includes at least one pair of cameras having overlapping fields of view and a touch surface encompassed within the overlapping fields of view across which a pointer is moved. The cameras of the at least one pair acquire images at intervals asynchronously. In order to estimate the position of the pointer relative to the touch surface from image data acquired by the at least one pair of cameras, the images are synthetically synchronized. During this process, for each camera in the pair, each acquired image is processed to determine the position of the pointer therein and the position of the pointer is recorded together with a timestamp representing the time elapsed between a reference point common to the cameras and the time the image was acquired.Type: ApplicationFiled: June 27, 2002Publication date: January 1, 2004Inventors: Randy McCharles, Gerald Morrison, Radek Kristof, Steve Worthington, Trevor Akitt