21
Negin Michael, Chmielewski Thomas A Jr, Sainsbury Robin, Salganicoff Marcos, Hanna Keith James, Mandelbaum Robert, Mishra Deepam: Apparatus for the iris acquiring images. Sensar, The Sarnoff Corporation, ALSTADT Lynn J, March 5, 1998: WO/1998/008439 (1 worldwide citation)

At least one wide field of view camera (3) and with an associated illuminator (6, 10) obtains sufficient images of a person to be identified so that x, y, z coordinates can be established for the expected position of that person's eye. The coordinates are used to direct a narrow field of view camera ...


22
Rockwood Alan, Davis Larry J: Multi-anode time to digital converter. Sensar, September 8, 1999: EP0939970-A1

An apparatus (82) for extending the dynamic range of a data acquisition. Multiple anode detectors (80) and microchannel plates (83) are used to increase the dynamic range of a time-to-digital converter (82). Multiple anodes (80) determine characteristics of a signal without distortion which normally ...


23
Randal W Glass: Method and apparatus for securely transmitting and authenticating biometric data over a network. Sensar, Susan C Murphy Esquire, Woodcock Washburn, May 9, 2002: US20020056043-A1

A method and apparatus for collecting and securely transmitting biometric data over a network contains a sensor, preferably a camera, for collecting biometric data and code generating hardware and software. The camera data is digitized and a unique code which is a function of the digitized camera da ...


24
Haab Dan, Patten Dan, Rollins Richard, Johnson Kent, Lee Edgar D: High speed data acquisition system and method. Sensar Corporation, CLAYTON Grant R, December 8, 1994: WO/1994/028631

A high speed data acquisition system which acquires an analog signal (102), converts it to digital data (104), and compresses the large volume of accumulated data into a format that can be handled in a microcomputer environment. The data acquisition system of the present invention can rapidly and co ...


25
Salganicoff Marcos, Hanna Keith James: Method and apparatus for illuminating and imaging eyes through eyeglasses using multiple sources of illumination. Sensar, The Sarnoff Corporation, Salganicoff Marcos, Hanna Keith James, ALSTADT Lynn J, June 10, 1999: WO/1999/027844

A reliable method of illuminating and imaging an eye through eyeglasses uses a carefully selected subset of multiple monochromatic light sources, a camera with an imager that exhibits minimal blooming, and a narrow-bandwidth optical bandpass filter to filter out most of the ambient illumination whil ...


26
Zhang Guang Hua, Salganicoff Marcos: Method of measuring the focus of close-up images of eyes. Sensar, Zhang Guang Hua, Salganicoff Marcos, ALSTADT Lynn J, June 10, 1999: WO/1999/027845

In a method of determining whether an image of an eye is in focus a set of pixels is selected along a line passing through the pupil/iris boundary such that the set contains at least 5 iris portion pixels and at least 5 pupil portion pixels. Statistical values, preferably median values, are computed ...


27
Camus Theodore A, Salganicoff Marcos, Chmielewski Thomas A Jr, Hanna Keith James: Method and apparatus for removal of bright or dark spots by the fusion of multiple images. Sensar, The Sarnoff Corporation, ALSTADT Lynn J, July 29, 1999: WO/1999/038121

A reliable method and apparatus for illuminating and imaging eyes uses multiple light sources producing multiple images of a subject each created under illumination by different illuminators. A composite image of the subject is formed by selecting pixels based upon their gray scale values or using p ...


28
Chmielewski Thomas A Jr, Vonhof George A, Negin Michael: Compact image steering and focusing device. Sensar, ALSTADT Lynn J, November 20, 1997: WO/1997/043677

A compact image steering and focusing device has a generally rectangular frame containing a pan/tilt mirror and at least one lens. There is a tilt plane bisecting the frame. A mirror drive motor is attached to the frame on one side of the tilt plane and a lens motor is attached to the frame on the o ...


29
Rockwood Alan, Davis Larry J: Multi-anode time to digital converter. Sensar Corporation, Rockwood Alan, Davis Larry J, CLAYTON Grant R, May 22, 1998: WO/1998/021742

An apparatus (82) for extending the dynamic range of a data acquisition. Multiple anode detectors (80) and microchannel plates (83) are used to increase the dynamic range of a time-to-digital converter (82). Multiple anodes (80) determine characteristics of a signal without distortion which normally ...


30
Camus Theodore A, Chmielewski Thomas A Jr: Image subtraction to remove ambient illumination. Sensar, ALSTADT Lynn J, June 10, 1999: WO/1999/029102

In a method of image subtraction a series of frames of a subject are taken using a video camera. The subject is illuminated in a manner so that illumination is alternately on, then off for successive fields within the image frame. A single frame is grabbed and an absolute difference between the odd ...