Patents Assigned to Digital Signal Corporation
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Patent number: 8757804Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.Type: GrantFiled: November 8, 2013Date of Patent: June 24, 2014Assignee: Digital Signal CorporationInventors: Richard Lee Sebastian, Kendall L. Belsley
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Publication number: 20140139806Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.Type: ApplicationFiled: November 8, 2013Publication date: May 22, 2014Applicant: Digital Signal CorporationInventors: Richard L. Sebastian, Kendall L. Belsley
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Publication number: 20140139818Abstract: A laser radar system using collocated laser beams to unambiguously detects a range of a target and a range rate at which the target is moving relative to the laser radar system. Another aspect of various embodiments of the invention may relate to a laser radar system that uses multiple laser radar sections to obtain multiple simultaneous measurements (or substantially so), whereby both range and range rate can be determined without various temporal effects introduced by systems employing single laser sections taking sequential measurements. In addition, other aspects of various embodiments of the invention may enable faster determination of the range and rate of the target, a more accurate determination of the range and rate of the target, and/or may provide other advantages.Type: ApplicationFiled: November 9, 2013Publication date: May 22, 2014Applicant: Digital Signal CorporationInventors: Richard Lee Sebastian, Kendall L. Belsley
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Patent number: 8717545Abstract: A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory of a target. The system estimates this trajectory in two stages: a first stage in which the range and Doppler measurements from the lidar system along with various feature measurements obtained from the images from the video system are used to estimate first stage motion aspects of the target (i.e., the trajectory of the target); and a second stage in which the images from the video system and the first stage motion aspects of the target are used to estimate second stage motion aspects of the target. Once the second stage motion aspects of the target are estimated, a three-dimensional image of the target may be generated.Type: GrantFiled: February 22, 2010Date of Patent: May 6, 2014Assignee: Digital Signal CorporationInventors: Richard Lee Sebastian, Anatoley T. Zheleznyak
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Publication number: 20140071121Abstract: A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory of a target. The system utilizes a two-stage solution to obtain 3D standardized face representations from non-frontal face views for a statistical learning algorithm. The first stage standardizes the pose (non-frontal 3D face representation) to a frontal view and the second stage uses facial symmetry to fill in missing facial regions due to yaw face pose variations (i.e. rotation about the y-axis).Type: ApplicationFiled: March 15, 2013Publication date: March 13, 2014Applicant: Digital Signal CorporationInventor: TRINA D. RUSS
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Publication number: 20140063189Abstract: A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory of a target and generate a three-dimensional image of the target. The system may refine the three-dimensional image by reducing the stochastic components in the transformation parameters between video frame times.Type: ApplicationFiled: March 15, 2013Publication date: March 6, 2014Applicant: Digital Signal CorporationInventor: Digital Signal Corporation
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Publication number: 20140049765Abstract: A system uses range and Doppler velocity measurements from a lidar subsystem and images from a video subsystem to estimate a six degree-of-freedom trajectory of a target. The video subsystem and the lidar subsystem may be aligned with one another by mapping the measurements of various facial features obtained by each of the subsystems to one another.Type: ApplicationFiled: March 15, 2013Publication date: February 20, 2014Applicant: Digital Signal CorporationInventor: Digital Signal Corporation
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Publication number: 20140049769Abstract: A system uses range and Doppler velocity measurements from a lidar system and images from a video system to estimate a six degree-of-freedom trajectory of a target. The system may determine a skin area or face contour based on the 3D measurements from a lidar subsystem and information regarding the location of various facial features from the 2D video images of a video subsystem.Type: ApplicationFiled: March 15, 2013Publication date: February 20, 2014Applicant: Digital Signal CorporationInventor: Anatoley T. ZHELEZNYAK
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System and Method for Positioning a Mirror in a Lidar System Using Open Loop and Closed Loop Control
Publication number: 20140036332Abstract: A control system structure is provided that improves system bandwidth without affecting optimization for other performance criteria (such as, suppressing loop disturbances, or other optimization criteria) and stability of a closed-loop system.Type: ApplicationFiled: August 1, 2013Publication date: February 6, 2014Applicant: Digital Signal CorporationInventor: Stephan Schulz -
Patent number: 8582085Abstract: A laser radar system using collocated laser beams to unambiguously detects a range of a target and a range rate at which the target is moving relative to the laser radar system. Another aspect of various embodiments of the invention may relate to a laser radar system that uses multiple laser radar sections to obtain multiple simultaneous measurements (or substantially so), whereby both range and range rate can be determined without various temporal effects introduced by systems employing single laser sections taking sequential measurements. In addition, other aspects of various embodiments of the invention may enable faster determination of the range and rate of the target, a more accurate determination of the range and rate of the target, and/or may provide other advantages.Type: GrantFiled: April 4, 2011Date of Patent: November 12, 2013Assignee: Digital Signal CorporationInventors: Richard Sebastian, Kendall Belsley
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Patent number: 8579439Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.Type: GrantFiled: May 14, 2012Date of Patent: November 12, 2013Assignee: Digital Signal CorporationInventors: Richard L. Sebastian, Kendall L. Belsley
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Patent number: 8177363Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.Type: GrantFiled: April 19, 2010Date of Patent: May 15, 2012Assignee: Digital Signal CorporationInventors: Richard Lee Sebastian, Kendall L. Belsley
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Patent number: 8081670Abstract: A system and method for controllably chirping electromagnetic radiation from a radiation source includes an optical cavity arrangement. The optical cavity arrangement enables electromagnetic radiation to be produced with a substantially linear chirp rate and a configurable period. By selectively injecting electromagnetic radiation into the optical cavity, the electromagnetic radiation may be produced with a single resonant mode that is frequency shifted at the substantially linear chirp rate. Producing the electromagnetic radiation with a single resonant mode may increase the coherence length of the electromagnetic radiation, which may be advantageous when the electromagnetic radiation is implemented in various applications. For example, the electromagnetic radiation produced by the optical cavity arrangement may enhance a range, speed, accuracy, and/or other aspects of a laser radar system.Type: GrantFiled: February 14, 2006Date of Patent: December 20, 2011Assignee: Digital Signal CorporationInventor: Kendall Belsley
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Patent number: 7920272Abstract: A laser radar system using collocated laser beams to unambiguously detects a range of a target and a range rate at which the target is moving relative to the laser radar system. Another aspect of various embodiments of the invention may relate to a laser radar system that uses multiple laser radar sections to obtain multiple simultaneous measurements (or substantially so), whereby both range and range rate can be determined without various temporal effects introduced by systems employing single laser sections taking sequential measurements. In addition, other aspects of various embodiments of the invention may enable faster determination of the range and rate of the target, a more accurate determination of the range and rate of the target, and/or may provide other advantages.Type: GrantFiled: February 26, 2009Date of Patent: April 5, 2011Assignee: Digital Signal CorporationInventors: Richard Sebastian, Kendall Belsley
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Patent number: 7699469Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.Type: GrantFiled: December 14, 2006Date of Patent: April 20, 2010Assignee: Digital Signal CorporationInventors: Richard L. Sebastian, Kendall L. Belsley
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Patent number: 7511824Abstract: A laser radar system using collocated laser beams to unambiguously detects a range of a target and a range rate at which the target is moving relative to the laser radar system. Another aspect of various embodiments of the invention may relate to a laser radar system that uses multiple laser radar sections to obtain multiple simultaneous measurements (or substantially so), whereby both range and range rate can be determined without various temporal effects introduced by systems employing single laser sections taking sequential measurements. In addition, other aspects of various embodiments of the invention may enable faster determination of the range and rate of the target, a more accurate determination of the range and rate of the target, and/or may provide other advantages.Type: GrantFiled: February 14, 2006Date of Patent: March 31, 2009Assignee: Digital Signal CorporationInventors: Richard Sebastian, Kendall Belsley
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Patent number: 7507203Abstract: A system and method for remotely monitoring an individual, in accordance with some embodiments of the invention. More particularly, one or more physiological functions and/or physical activities of the individual may be monitored. In order to monitor the individual, a range to, and/or a range rate (i.e., velocity) of, one or more points on one or more surfaces of the individual (e.g., skin, clothing, lips, etc.) may be determined over time. Based on the determinations of the range and/or range rate of the points on the surfaces of the individual, the one or more physiological functions and/or physical activities of the individual may be monitored. This may enable the physiological functions and/or physical activities to be monitored remotely from the individual without access or proximity to the individual.Type: GrantFiled: September 21, 2005Date of Patent: March 24, 2009Assignee: Digital Signal CorporationInventors: Richard L Sebastian, Kendall L. Belsley
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Publication number: 20070171367Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.Type: ApplicationFiled: December 14, 2006Publication date: July 26, 2007Applicant: Digital Signal CorporationInventors: Richard Sebastian, Kendall Belsley
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Patent number: 4824251Abstract: A precision optical distance measuring device utilizes coherent optical detection for extreme precision, and polarization preserving fiber to enable its use in limited access environments. A laser diode provides a linearly polarized source light beam which is directed to a polarizing beam splitter. The source beam passes through the beam splitter and is focused by a lens into a polarization preserving fiber where it travels along one optical axis toward a probe head disposed at the target location. In the probe head, the source beam is focused by a lens onto the target. After focusing, the source beam is passed through a quarter-wave plate. The interface between ambient air and the target-side of the quarter-wave plate reflects a local oscillator beam back through the quarter-wave plate. Meanwhile, the source beam is reflected from the target as a return beam.Type: GrantFiled: September 25, 1987Date of Patent: April 25, 1989Assignee: Digital Signal CorporationInventors: Anthony R. Slotwinski, Stephen C. Kenyon
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Patent number: 4733609Abstract: A laser proximity sensor for a projectile includes a laser diode having front and rear facets. The diode generates a main laser signal and directs a first portion thereof out of the front facet as a source beam. Focusing means focuses the source beam on a target, and focuses the return beam reflected from the target into the laser diode through the front facet. The laser diode receives the return light beam, provides it with a positive gain, mixes it with the main laser signal, and guides it out the rear facet as a mixed beam. A detection focusing device focuses the mixed beam onto a PIN detector. The PIN detector coherently detects the mixed beam and provides an output signal having a perturbation where the target enters the focal field of the focusing optics. A processor detects the output signal from the PIN detector and may activate a fuse on the projectile.Type: GrantFiled: April 3, 1987Date of Patent: March 29, 1988Assignee: Digital Signal CorporationInventors: Frank E. Goodwin, Michael S. Hersman, Anthony R. Slotwinski