DR. DONALD RAYMOND WHITE, DC, RN
Chiropractic at Canyon Rd, Beaverton, OR
License number
Oregon 272659
Category
Chiropractic
Type
Chiropractor
Address
Address
12850 SW Canyon Rd, Beaverton, OR 97005
Phone
(503) 641-8000
(503) 520-9159 (Fax)
(503) 520-9159 (Fax)
Personal information
See more information about DONALD RAYMOND WHITE at radaris.comName
Address
Phone
4865 SW Hollyhock Cir, Corvallis, OR 97333
4875 SW Fairmount Dr, Beaverton, OR 97005
41994 Broadshire Ln, Banks, OR 97106
Professional information
Full Duplex Communication Circuits With Bilateral T Hybrid And Balanced Impedance Configurations
US Patent:
6370245, Apr 9, 2002
Filed:
Dec 12, 1997
Appl. No.:
08/989816
Inventors:
Donald R. White - Aloha OR
Assignee:
Konetics, Inc. - Portland OR
International Classification:
H04M 162
US Classification:
37939004, 37938803, 37939003
Abstract:
Full duplex circuits provide a bi-directional signal path at one port for transmit and receive signals and also provide separation between the transmit and receive signals at their respective ports. To accomplish this, the circuits employ amplifiers arranged in either a bilateral T hybrid or balanced impedance configuration. One application is in a transducer interface, where a single transducer is used as both a speaker/ear phone and a microphone. Another application is in a telephone line interconnect, where the telephone line interface simultaneously transmits and receives electrical signals representing audio data, e. g. , voice data. The transducer interface drives a receive signal onto a transducer to create audio output while simultaneously generating a transmit signal from audio input. The telephone line interconnect drives a transmit signal through a transformer to send the transmit signal to a telephone line while simultaneously transferring a receive signal from the telephone line. In both applications, the circuits provide a bi-directional signal path (simultaneous transmit and receive signals) at one port and achieve separation of the transmit and receive signals at respective transmit and receive ports.
Dr. Donald R White, Beaverton OR - DC (Doctor of Chiropractic)
Specialties:
Chiropractic
Address:
12850 SW Canyon Rd, Beaverton 97005
(503) 641-8000 (Phone), (503) 520-9159 (Fax)
(503) 641-8000 (Phone), (503) 520-9159 (Fax)
Languages:
English
Full Duplex Communication Circuit With A Transducer For Simultaneously Generating Audio Output And Receiving Audio Input
US Patent:
5907538, May 25, 1999
Filed:
Feb 18, 1997
Appl. No.:
8/801525
Inventors:
Donald R. White - Beaverton OR
International Classification:
H04B 156
US Classification:
370276
Abstract:
A full duplex communication circuit uses a transducer as both a microphone and speaker/earphone to provide full duplex communication without acoustical feedback. The circuit uses a novel amplifier configuration to apply a signal received from a remote source to the transducer without loading it. The output of the transducer has a combined transmit and receive signal. To eliminate feedback of the receive signal in the output of the transmit signal, an audio processing circuit (analog) takes this combined signal and simultaneously compresses the receive signal and expands the transmit signal to produce a transmit signal that is 35-40 dB greater than the receive signal at the output.
Loopdown And Looparound Headsets
US Patent:
2002018, Dec 12, 2002
Filed:
Jun 7, 2001
Appl. No.:
09/878151
Inventors:
Masahisa Masuda - Westlinn OR, US
Donald White - Beaverton OR, US
Donald White - Beaverton OR, US
International Classification:
H04R025/00
US Classification:
381/380000, 381/151000, 381/374000
Abstract:
A headset includes earpieces for attaching to ears of an operator. A band has opposite ends that connect to the two earpieces and extends in a forward direction from the two earpieces. The band then either extends downwardly below the chin or extend backwards in back of the neck. In one implementation, the headset is used for two-way communications with one earpiece containing a microphone and the other earpiece containing a speaker.
Audio Headset
US Patent:
7072476, Jul 4, 2006
Filed:
Jan 13, 2003
Appl. No.:
10/342102
Inventors:
Donald R. White - Beaverton OR, US
Masahisa Masuda - Westlinn OR, US
Masahisa Masuda - Westlinn OR, US
Assignee:
Matech, Inc. - Portland OR
International Classification:
H04R 1/10
US Classification:
381 74, 381328, 381 711, 370276
Abstract:
A headset includes two earpieces. One earpiece acts as a microphone, and the other earpiece acts as an earphone. Isolated from background noise and vibrations due to bone conduction, the microphone earpieces convert voice sounds from the air column in the external ear canal into electrical signals. Other embodiments of the invention address feedback problems and achieve improved performance relative to existing full duplex communication devices. In another embodiment of the invention a headset includes a band having opposite ends that extend in a forward direction from the two earpieces. The band then either extends downwardly or backwards.