Patents by Inventor Derek L. Knee
Derek L. Knee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 7403644Abstract: An input device with an optical scanner for use in capturing biometric images such as fingerprints. The user places the biometric image on the platen window. Movement of the platen window allows a scan head to scan the biometric image and capture a series of scan lines. The series of scan lines are combined together to form an image representative of the biometric image.Type: GrantFiled: November 26, 2003Date of Patent: July 22, 2008Assignee: Microsoft CorporationInventors: David D. Bohn, Derek L. Knee
-
Patent number: 7194651Abstract: A link module architecture is disclosed for use with a multi-core central processing unit having a cross bar switch. The link module comprises timing recovery circuitry operably coupled to the central processing unit, wherein the timing recovery circuitry is positioned proximate to the cross bar switch. The link module further comprises a bit receiver operably coupled to the central processing unit, and a bit output driver operably coupled to the central processing unit. The bit receiver, preferably comprising a wide bandwidth amplifier, and the bit driver are preferably integrated with a sea of on-chip RAM.Type: GrantFiled: March 28, 2002Date of Patent: March 20, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Derek L. Knee, Thomas N. Indermaur
-
Patent number: 6963060Abstract: Pixels in an array of image sensor pixels contain photo-sensors and circuits having inputs connected to the photosensors. The circuits have feedback loops for reducing fixed pattern noise in the array. Output from each pixel is used to latch a multibit counter value supplied by a global counter. Each feedback loop preferably includes a pair of alternately-toggling switching transistors to minimize unwanted charge injection. An image sensor according to the invention can be used for, e.g., motion sensing.Type: GrantFiled: February 4, 2005Date of Patent: November 8, 2005Assignee: Microsoft CorporationInventors: Derek L. Knee, Thomas C. Oliver, Gary M. Rensberger
-
Patent number: 6950094Abstract: An optical mouse images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the mouse. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A hold feature suspends the production of movement signals to the computer, allowing the mouse to be physically relocated on the work surface without disturbing the position on the screen of the pointer. This may be needed if the operator runs out of room to physically move the mouse further, but the screen pointer still needs to go further. The hold feature may be implemented with an actual button, a separate proximity detector or by detecting the presence of a characteristic condition in the digitized data, such as loss of correlation or velocity in excess of a selected limit.Type: GrantFiled: August 12, 2002Date of Patent: September 27, 2005Assignee: Agilent Technologies, IncInventors: Gary B. Gordon, Derek L. Knee, Rajeev Badyal, Jason T. Hartlove
-
Patent number: 6917030Abstract: Pixels in an array of image sensor pixels contain photo-sensors. In response to illumination of a photo-sensor, an initial signal is generated. Multiple comparison signals are also generated based on the initial signal. One of the comparison signals remains internal to the pixel, and other comparison signals are transmitted to neighboring pixels. Within a pixel, the internal comparison signal is compared to a sum of comparison signals received from neighboring pixels. Based on the comparison, a data value may be latched and used for indicating a relative difference in pixel illumination.Type: GrantFiled: December 28, 2004Date of Patent: July 12, 2005Assignee: Microsoft CorporationInventors: Derek L. Knee, Thomas C. Oliver
-
Patent number: 6906304Abstract: Pixels in an array of image sensor pixels contain photo-sensors and circuits having inputs connected to the photosensors. The circuits have feedback loops for reducing fixed pattern noise in the array. Output from each pixel is used to latch a multibit counter value supplied by a global counter. Each feedback loop preferably includes a pair of alternately-toggling switching transistors to minimize unwanted charge injection. An image sensor according to the invention can be used for, e.g., motion sensing.Type: GrantFiled: November 27, 2002Date of Patent: June 14, 2005Assignee: Microsoft CorporationInventors: Derek L. Knee, Thomas C. Oliver, Gary M. Rensberger
-
Patent number: 6891143Abstract: Pixels in an array of image sensor pixels contain photo-sensors. In response to illumination of a photo-sensor, an initial signal is generated. Multiple comparison signals are also generated based on the initial signal. One of the comparison signals remains internal to the pixel, and other comparison signals are transmitted to neighboring pixels. Within a pixel, the internal comparison signal is compared to a sum of comparison signals received from neighboring pixels. Based on the comparison, a data value may be latched and used for indicating a relative difference in pixel illumination.Type: GrantFiled: October 30, 2002Date of Patent: May 10, 2005Assignee: Microsoft CorporationInventors: Derek L. Knee, Thomas C. Oliver
-
Publication number: 20040099790Abstract: Pixels in an array of image sensor pixels contain photo-sensors and circuits having inputs connected to the photosensors. The circuits have feedback loops for reducing fixed pattern noise in the array. Output from each pixel is used to latch a multibit counter value supplied by a global counter. Each feedback loop preferably includes a pair of alternately-toggling switching transistors to minimize unwanted charge injection. An image sensor according to the invention can be used for, e.g., motion sensing.Type: ApplicationFiled: November 27, 2002Publication date: May 27, 2004Applicant: Microsoft CorporationInventors: Derek L. Knee, Thomas C. Oliver, Gary M. Rensberger
-
Publication number: 20040085468Abstract: Pixels in an array of image sensor pixels contain photo-sensors. In response to illumination of a photo-sensor, an initial signal is generated. Multiple comparison signals are also generated based on the initial signal. One of the comparison signals remains internal to the pixel, and other comparison signals are transmitted to neighboring pixels. Within a pixel, the internal comparison signal is compared to a sum of comparison signals received from neighboring pixels. Based on the comparison, a data value may be latched and used for indicating a relative difference in pixel illumination.Type: ApplicationFiled: October 30, 2002Publication date: May 6, 2004Applicant: Microsoft CorporationInventors: Derek L. Knee, Thomas C. Oliver
-
Publication number: 20030214904Abstract: An orthogonal data link is provided by a first digital device, a second digital device, and a bus coupling the first digital device to the second digital device. The first digital device has a first transmitter that encodes data of the first device with a first code (e.g., [1,1]), for transmission on the bus. The second device has a second transmitter that encodes data of the second device with a second code (e.g., [0,1] or [1,0]), for transmission on the bus. The first device has a first receiver that renders the second data by (a) multiplying signals of the bus with the second code and (b) integrating over a periodicity of the codes. The second device has a second receiver that renders the first data by (a) multiplying signals of the bus with the first code and (b) integrating over a periodicity of the codes.Type: ApplicationFiled: February 14, 2003Publication date: November 20, 2003Inventors: Karl Joseph Bois, Derek L. Knee, Vaishnav Srinivas
-
Publication number: 20030194032Abstract: A link module architecture is disclosed for use with a multi-core central processing unit having a cross bar switch. The link module comprises timing recovery circuitry operably coupled to the central processing unit, wherein the timing recovery circuitry is positioned proximate to the cross bar switch. The link module further comprises a bit receiver operably coupled to the central processing unit, and a bit output driver operably coupled to the central processing unit. The bit receiver, preferably comprising a wide bandwidth amplifier, and the bit driver are preferably integrated with a sea of on-chip RAM.Type: ApplicationFiled: March 28, 2002Publication date: October 16, 2003Inventors: Derek L. Knee, Thomas N. Indermaur
-
Patent number: 6631218Abstract: A CMOS digital integrated circuit digitally captures an image, generates a result surface on which a minima resides, and compares the result surfaces. The correlation of the result surfaces represents a best fit image displacement between image frames.Type: GrantFiled: January 9, 2001Date of Patent: October 7, 2003Assignees: Agilent Technologies, Inc., Hewlett Packard, Inc.Inventors: Rajeev Badyal, Derek L. Knee, Mark Alan Anderson, Brian James Misek
-
Publication number: 20020190953Abstract: An optical mouse images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the mouse. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A hold feature suspends the production of movement signals to the computer, allowing the mouse to be physically relocated on the work surface without disturbing the position on the screen of the pointer. This may be needed if the operator runs out of room to physically move the mouse further, but the screen pointer still needs to go further. The hold feature may be implemented with an actual button, a separate proximity detector or by detecting the presence of a characteristic condition in the digitized data, such as loss of correlation or velocity in excess of a selected limit.Type: ApplicationFiled: August 12, 2002Publication date: December 19, 2002Applicant: AGILENT TECHNOLOGIES, INC.Inventors: Gary B. Gordon, Derek L. Knee, Rajeev Badyal, Jason T. Hartlove
-
Patent number: 6433780Abstract: An optical mouse images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the mouse. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A hold feature suspends the production of movement signals to the computer, allowing the mouse to be physically relocated on the work surface without disturbing the position on the screen of the pointer. This may be needed if the operator runs out of room to physically move the mouse further, but the screen pointer still needs to go further. The hold feature may be implemented with an actual button, a separate proximity detector or by detecting the presence of a characteristic condition in the digitized data, such as loss of correlation or velocity in excess of a selected limit.Type: GrantFiled: January 2, 2001Date of Patent: August 13, 2002Assignee: Agilent Technologies, Inc.Inventors: Gary B. Gordon, Derek L. Knee, Rajeev Badyal, Jason T. Hartlove
-
Publication number: 20020093486Abstract: An optical mouse images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the mouse. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A hold feature suspends the production of movement signals to the computer, allowing the mouse to be physically relocated on the work surface without disturbing the position on the screen ofthe pointer. This may be needed if the operator runs out of room to physically move the mouse further, but the screen pointer still needs to go further. The hold feature may be implemented with an actual button, a separate proximity detector or by detecting the presence of a characteristic condition in the digitized data, such as loss of correlation or velocity in excess of a selected limit.Type: ApplicationFiled: January 2, 2001Publication date: July 18, 2002Inventors: Gary B. Gordon, Derek L. Knee, Rajeev Badyal, Jason T. Hartlove
-
Patent number: 6281882Abstract: An optical mouse images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the mouse. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A hold feature suspends the production of movement signals to the computer, allowing the mouse to be physically relocated on the work surface without disturbing the position on the screen of the pointer. This may be needed if the operator runs out of room to physically move the mouse further, but the screen pointer still needs to go further. The hold feature may be implemented with an actual button, a separate proximity detector or by detecting the presence of a characteristic condition in the digitized data, such as loss of correlation or velocity in excess of a selected limit.Type: GrantFiled: March 30, 1998Date of Patent: August 28, 2001Assignee: Agilent Technologies, Inc.Inventors: Gary B. Gordon, Derek L. Knee, Rajeev Badyal, Jason T. Hartlove
-
Publication number: 20010012408Abstract: A CMOS digital integrated circuit (IC) chip on which an image is captured, digitized, and then processed on-chip in substantially the digital domain. A preferred embodiment comprises imaging circuitry including a photo cell array for capturing an image and generating a representative analog signal, conversion circuitry including an n-bit successive approximation register (SAR) analog-to-digital converter for converting the analog signal to a corresponding digital signal, filter circuitry including a spatial filter for edge and contrast enhancement of the corresponding image, compression circuitry for reducing the digital signal storage needs, correlation circuitry for processing the digital signal to generate result surface on which a minima resides representing a best fit image displacement between the captured image and previous images, interpolation circuitry for mapping the result surface into x- and y-coordinates, and an interface with a device using the chip, such as a hand-held scanner.Type: ApplicationFiled: January 9, 2001Publication date: August 9, 2001Inventors: Rajeev Badyal, Derek L. Knee, Mark Alan Anderson, Brian James Misek
-
Patent number: 6233368Abstract: A CMOS digital integrated circuit (IC) chip on which an image is captured, digitized, and then processed on-chip in substantially the digital domain. A preferred embodiment comprises imaging circuitry including a photo cell array for capturing an image and generating a representative analog signal, conversion circuitry including an n-bit successive approximation register (SAR) analog-to-digital converter for converting the analog signal to a corresponding digital signal, filter circuitry including a spatial filter for edge and contrast enhancement of the corresponding image, compression circuitry for reducing the digital signal storage needs, correlation circuitry for processing the digital signal to generate result surface on which a minima resides representing a best fit image displacement between the captured image and previous images, interpolation circuitry for mapping the result surface into x- and y-coordinates, and an interface with a device using the chip, such as a hand-held scanner.Type: GrantFiled: March 18, 1998Date of Patent: May 15, 2001Assignee: Agilent Technologies, Inc.Inventors: Rajeev Badyal, Derek L. Knee, Mark A. Anderson, Brian J. Misek
-
Patent number: 6151015Abstract: A pen like computer pointing device images as an array of pixels the spatial features of generally any micro textured or micro detailed work surface below the tip of the pen. The photo detector responses are digitized and stored as a frame into memory. Motion produces successive frames of translated patterns of pixel information, which are compared by autocorrelation to ascertain the direction and amount of movement. A contact sensor senses when the tip of the pointing device is in contact with the work surface. Buttons are included on the body of the pointing device that allow it to function in place of a computer mouse device.Type: GrantFiled: April 27, 1998Date of Patent: November 21, 2000Assignee: Agilent TechnologiesInventors: Rajeev Badyal, Derek L. Knee
-
Patent number: 6104020Abstract: Circuitry provides an electronic shutter capability to photo-receiving circuitry for the purpose of disabling integration of a photo-generating charge on an integration capacitor until a reading device reads the integrated signal from the integrating capacitor. With an input from a shutter control line of a high logic voltage, the shutter discontinues charging of the integrating capacitor until the integration capacitor is selectively connected to a read line. Upon receipt of a low logic voltage signal from the shutter control line, the shutter allows the integration capacitor to integrate a photo-receiving charge. The electronic shutter therefore provides well controlled integration time via shutter control. Another advantage is that the integration time is completely independent of the cell reading rate.Type: GrantFiled: February 17, 1998Date of Patent: August 15, 2000Assignee: Agilent TechnologiesInventors: Derek L. Knee, Brian J. Misek