Patents by Inventor William E. Westell
William E. Westell 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: 5036398Abstract: A film writer and viewer system operable to reduce the exposure requirements of the writer and thereby extend its life by providing a pre-exposure lamp to increase the density of the film to a first value and by providing an image enhancer on the output of a video camera viewing the film to increase the contrast between the information on the film and the background for subsequent viewing.Type: GrantFiled: October 3, 1989Date of Patent: July 30, 1991Assignee: Honeywell Regelsysteme GmbHInventor: William E. Westell
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Patent number: 5028998Abstract: Electronic detector-array synthesis techniques provide fast, precise and accurate digital control of electronic zoom for electro-optical scanning systems. Exponentially-arrayed detector elements with binary-tree size-synthesis and size-interpolation, coupled with logarithmic size-control, offer optimum implementation efficiencies (hardware minimization). Alternative implementations offer different tradeoffs.Type: GrantFiled: February 6, 1989Date of Patent: July 2, 1991Assignee: Honeywell Regelsysteme GmbHInventor: William E. Westell
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Patent number: 4841317Abstract: A web storage and handling system employing two concentric rings of rollers. The web is wound around the outer of the concentric arrangement and therefrom wound around the inner of the concentric arrangement. From the inner of the concentric arrangement the web passes over two canted idlers to be removed from the plane of the concentric rings to permit viewing and final storage.Type: GrantFiled: May 2, 1988Date of Patent: June 20, 1989Assignee: Honeywell Inc.Inventor: William E. Westell
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Patent number: 4797745Abstract: A video image enhancer is disclosed for use in surveillance at low light levels to enhance dark and/or low contrast segments of a composite video signal of a surveyed scene by subjecting the dark and/or low contrast segments thereof to high gain and bright and/or high contrast segments to low gain. The video image enhancer includes an input designed to receive the composite video signal, a device provided with a dc restorer circuit and a variable potentiometer to yield an adjustable-bias dc clamp of the composite video signal, a second variable potentiometer for adjusting the high-gain slope of the device, a diode clamp connected to the device's output, and a pair of drivers coupled to the device's output to provide a low impedance output video signal with its dark and/or low contrast segments enhanced. Preferably, the device is a non-inverting operational amplifier. Preferably, the pair of drivers comprise a pair of NPN transistors connected in an emitter-base configuration.Type: GrantFiled: February 11, 1985Date of Patent: January 10, 1989Assignee: Baird CorporationInventor: William E. Westell
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Patent number: 4782228Abstract: An improved optical system having an opto-mechanical scanner for increasing the duty cycle of the scanner while maintaining a constant optical aperture throughout the scan. Two alternating optical paths are provided between the scanner and a transducer by use of an optical multiplexer synchronized with the scanner rotation.Type: GrantFiled: January 16, 1987Date of Patent: November 1, 1988Assignee: Honeywell Inc.Inventor: William E. Westell
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Patent number: 4385839Abstract: An electro-optical device for generating data signals representing relative displacement between a master reticle with an optical aperture pattern in an object plane and a workpiece with an image of the aperture pattern in an image plane comprises a reference detector for sensing reference radiation directed towards the aperture pattern and a convolution detector for sensing the reference radiation reflected by the image pattern. A processor compares the phase of a signal generated by the convolution detector to the phase of a signal generated by the reference detector and generates the data signals defining the relative displacement between the master and the workpiece.Type: GrantFiled: July 31, 1980Date of Patent: May 31, 1983Assignee: Baird CorporationInventor: William E. Westell
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Patent number: 4197583Abstract: A display system in which a video signal derived from digital data is processed in a processor in order to produce an analog image of the digital data on a cathode-ray tube display by intensity modulation of the display beam according to an approximate two-dimensional Gaussian spread function centered about each digital data point.Type: GrantFiled: May 3, 1978Date of Patent: April 8, 1980Assignee: Baird CorporationInventors: William E. Westell, Raymond P. Grenier, Johan A. Govaert
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Patent number: 4156914Abstract: A computer image display system in which digital sampled data, generated by an image transducer and processed by a computer, is convolved with a Gaussian function in a display processor in order to produce a continuous analog image presentation on a diplay. First, the Gaussian function is convolved vertically with computer stored intensities in a vertical slice of interest, that is, multiplied by those intensity values in the vertical slice and summed to derive a resultant intermediate value on a given horizontal line. Then, the Gaussian function is convolved with the resultant intermediate value on a given horizontal line in order to derive final values which are to be displayed.Type: GrantFiled: August 18, 1977Date of Patent: May 29, 1979Assignee: Baird CorporationInventor: William E. Westell
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Patent number: 4037161Abstract: An electro-optical device for generating data signals representing relative displacement between an aperture pattern in a reference plane and a reflective pattern in a measurement plane comprises a reference detector for sensing reference radiation directed towards the aperture pattern and a convolution detector for sensing the reference radiation reflected by the reflective pattern. The phase of a signal generated by the convolution detector is compared to the phase of a signal generated by the reference detector for generating the data signals defining the relative displacement between the aperture pattern and the reflective pattern.Type: GrantFiled: December 3, 1975Date of Patent: July 19, 1977Assignee: Baird-Atomic, Inc.Inventor: William E. Westell
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Patent number: 4030817Abstract: Improved apodization filter serving as the field stop of a scanning radiometer and attenuating unwanted light modulation signals when scanning edges of any field of view resulting in more accurate radiometric measurements.Type: GrantFiled: March 22, 1976Date of Patent: June 21, 1977Assignee: The United States of America as represented by the Secretary of the ArmyInventor: William E. Westell
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Patent number: 3951548Abstract: An electro-optical device for generating data signals representing relative displacement between an aperture pattern in a reference plane and a reflective pattern in a measurement plane comprises a reference detector for sensing reference radiation directed towards the aperture pattern and a convolution detector for sensing the reference radiation reflected by the reflective pattern. The phase of a signal generated by the convolution detector is compared to the phase of a signal generated by the reference detector for generating the data signals defining the relative displacement between the aperture pattern and the reflective pattern.Type: GrantFiled: July 22, 1974Date of Patent: April 20, 1976Assignee: Baird-Atomic, Inc.Inventor: William E. Westell