1
Steven Robert Vetorino, James Victor Platt, Douglass Anderson Springer: Renewable energy flashlight. Applied Innovative Technologies Incorporated, Jennifer L Macheledt Bales & Johnson Bales, November 2, 1999: US05975714 (131 worldwide citation)

A renewable energy flashlight comprises a housing and a barrel located within the housing. The barrel has a wire coil wrapped around it, between the barrel and the housing. A magnet disposed within the barrel oscillates within the barrel when the barrel is shaken, generating an alternating current i ...


2
Wade Thomas Cathey Jr, Edward Raymond Dowski Jr: Apparatus and methods for extending depth of field in image projection systems. University Technology Corporation, Jennifer L Macheledt Bales & Johnson Bales, May 30, 2000: US06069738 (95 worldwide citation)

An optical system for providing an in-focus, extended depth of field image on a projection surface includes an encoded mask or light encoder for preceding the light to include object information (or, equivalently, information about the desired image), and an extended depth of field (EDF) mask, for e ...


3
James Mitchell Kates: Feedback cancellation apparatus and methods. AudioLogic Hearing Systems, Jennifer L Macheledt Bales & Johnson Bales, June 6, 2000: US06072884 (93 worldwide citation)

Feedback cancellation apparatus uses a cascade of two filters along with a short bulk delay. The first filter is adapted when the hearing aid is turned on in the ear. This filter adapts quickly using a white noise probe signal, and then the filter coefficients are frozen. The first filter models par ...


4
Jeffrey Charles Manion: Integrated parking meter system. Jennifer L Macheledt Bales & Johnson Bales, March 14, 2000: US06037880 (73 worldwide citation)

An integrated parking meter system automates the issuance of parking citations. Each parking meter will be equipped with a sonar range finder, mercury type switch and a two way radio that communicates via N-PCS to a host computer back at the control center. When a meter runs out of money it checks t ...


5
Wade Thomas Cathey Jr, Edward Raymond Dowski Jr: Anti-aliasing apparatus and methods for optical imaging. University Technology Corporation, Jennifer L Macheledt Bales & Johnson Bales, February 1, 2000: US06021005 (60 worldwide citation)

An anti-aliasing filter for use in an incoherent imaging system reduces the resolution of the optical image to prevent aliasing, without requiring a reduction in the amount of light captured by the system, and without adversely affecting image quality or requiring complex optical systems. The filter ...


6
John Laurence Melanson: Delta sigma pwm dac to reduce switching. AudioLogic Incorporated, Jennifer L Macheledt Bales & Johnson Bales, September 29, 1998: US05815102 (57 worldwide citation)

A digital to analog (D/A) converter for hearing aids and the like includes a delta sigma modulator and a duty cycle demodulator. The delta sigma modulator converts medium rate, high resolution data into medium rate, medium resolution data, and the duty cycle demodulator converts the medium rate, med ...


7
Robert Crawford Maher: Audio spatial localization apparatus and methods. EuPhonics Incorporated, Jennifer L Macheledt Bales & Johnson Bales, June 20, 2000: US06078669 (49 worldwide citation)

Audio spatial localization is accomplished by utilizing input parameters representing the physical and geometrical aspects of a sound source to modify a monophonic representation of the sound or voice and generate a stereo signal which simulates the acoustical effect of the localized sound. The inpu ...


8
John Laurence Melanson: Correction of nonlinear output distortion in a Delta Sigma DAC. AudioLogic Incorporated, Jennifer L Macheledt Bales & Johnson Bales, November 21, 2000: US06150969 (39 worldwide citation)

A delta sigma modulator of at least second order includes correction means applied to each feedback loop in the modulator, to account for systemic nonlinear output distortions. Since the output distortion is nonlinear, the correction applied to each feedback loop is nontrivially different. Such a co ...


9
Robert Crawford Maher: Audio spatial enhancement apparatus and methods. EuPhonics Incorporated, Jennifer L Macheledt Bales & Johnson Bales, August 29, 2000: US06111958 (38 worldwide citation)

A spatial enhancement system broadens the sound image of a stereo signal. The system emphasizes dissimilarity between the left and right channels by (i) boosting the level of the dissimilar components, (ii) providing spectral equalization to enhance the perception of breadth, and (iii) injecting an ...


10
Eric Lindemann, Thomas Lee Worrall: Continuous frequency dynamic range audio compressor. AudioLogic Incorporated, Jennifer L Macheledt Bales & Johnson Bales, August 1, 2000: US06097824 (29 worldwide citation)

An improved multiband audio compressor is well behaved for both wide band and narrow band signals, and shows no undesirable artifacts at filter crossover frequencies. The compressor includes a heavily overlapped filter bank, which is the heart of the present invention. The filter bank filters the in ...



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