David J Klunk

US Patent:

20080057891, Mar 6, 2008

Filed:

Aug 31, 2006

Appl. No.:

11/513220

Inventors:

David Allen Klunk - Forest Hill MD, US

International Classification:

H04B 1/18

US Classification:

4551861

Abstract:

Techniques are disclosed for identifying radio stations along a travel route broadcasting programs in user-specified radio program formats without requiring positioning devices that provide real-time positioning information of a radio receiver. An exemplary method includes determining a travel route based on specified starting and ending location information. The method includes identifying, from a plurality of radio stations, any radio stations along the determined travel route that broadcast radio program formats corresponding to at least one specified radio program format. The identifying includes analyzing predetermined radio station information compiled for the plurality of radio stations. The method includes outputting the identified radio stations to accompany the determined travel route as text-formatted travel directions comprising a plurality of text segments. The text segments specify at least one of the identified radio stations or indicate that none of the radio stations were identified, adjacent text segments that identify travel directions.

US Patent:

20150366631, Dec 24, 2015

Filed:

Jun 18, 2015

Appl. No.:

14/743402

Inventors:

- York PA, US
Michael C. Dietrich - East Petersburg PA, US
Peter H. Werner - Columbia PA, US
David C. Klunk - New Oxford PA, US
Kenneth R. Guaragno - Spring Grove PA, US

International Classification:

A61C 1/07
A61C 1/00
A61C 17/20
A61C 19/04

Abstract:

A method for controlling a magnetostrictive ultrasonic transducer of the type used in a magnetostrictive ultrasonic dental scaler includes generating a drive signal for a resonant circuit using a full bridge synchronous class D amplifier. The electrical signal output by the resonant circuit drives an excitation coil that generates an electromagnetic field that causes the magnetostrictive ultrasonic transducer to vibrate. A feedback wire is rendered unnecessary by measuring current and voltage outputs of the resonant circuit and quadrature sampling the measured current and voltage outputs at the same sampling rate as used for the generation of the electrical signal by the resonant circuit. A pulse width modulated signal is generated from the quadrature sampled sensed current and voltage that represents a pulse train approximation of a sine wave of the drive signal for, in turn, being applied to the full bridge synchronous class D amplifier to generate the drive signal for the resonant circuit. Changes in the pulse widths of the pulse train change the amplitude of the drive signal.