James Howard Schoenduve

US Patent:

58753966, Feb 23, 1999

Filed:

Nov 13, 1995

Appl. No.:

8/556333

Inventors:

G. William Stockton - Los Altos CA
William D. Oatman - San Jose CA
Brent S. Simons - Santa Clara CA
James H. Schoenduve - San Jose CA

Assignee:

Wytec, Incorporated - Santa Clara CA

International Classification:

H04N 7173
H04B 700

US Classification:

455562

Abstract:

A one-way and two-way multichannel radio frequency transmission system and method employing a sectorized broadcasting technique is described. The system and method reduces the effective bandwidth of the broadcast signal by multiplexing available channels of signals into a set of formatted independent digital bitstreams--where each of the bitstreams includes all or a portion of the available channels provided by the system program provider. The independent bitstreams are transmitted to transmitting towers using point-to-point transmission methods. The transmitting towers phase modulate and amplify the bitstreams to generate a set of independent modulated signals. Each transmitter tower includes an antenna for broadcasting the modulated signals to a sectorized service area--each sector in the service area receiving a different one of the set of independent modulated signals. The antenna includes a set of individual antenna panels--each panel for broadcasting one of the set of modulated signals. Each subscriber site demodulates, demultiplexes and selects one channel from the received modulated signal.

US Patent:

62434276, Jun 5, 2001

Filed:

Jan 7, 1998

Appl. No.:

9/003891

Inventors:

G. William Stockton - Los Altos CA
William D. Oatman - San Jose CA
Brent S. Simons - Santa Clara CA
James H. Schoenduve - San Jose CA

Assignee:

Wytec, Incorporated - Santa Clara CA

International Classification:

H04L 2720

US Classification:

375308

Abstract:

A one-way and two-way multichannel radio frequency transmission system and method employing a sectorized broadcasting technique is described. The system and method reduces the effective bandwidth of the broadcast signal by multiplexing available channels of signals into a set of formatted independent digital bitstreams--where each of the bitstreams includes all or a portion of the available channels provided by the system program provider. The independent bitstreams are transmitted to transmitting towers using point-to-point transmission methods. The transmitting towers phase modulate and amplify the bitstreams to generate a set of independent modulated signals. Each transmitter tower includes an antenna for broadcasting the modulated signals to a sectorized service area each sector in the service area receiving a different one of the set of independent modulated signals. The antenna includes a set of individual antenna panels each panel for broadcasting one of the set of modulated signals. Each subscriber site demodulates, demultiplexes and selects one channel from the received modulated signal.

US Patent:

20210104785, Apr 8, 2021

Filed:

Oct 1, 2020

Appl. No.:

17/060980

Inventors:

- Glenelg MD, US
Richard E. Pavek - Marble Falls TX, US
James H. Schoenduve - Hansville WA, US

Assignee:

RFNAV Inc. - Glenelg MD

International Classification:

H01M 10/48
G01N 29/06
H01M 10/42
H02J 7/00

Abstract:

Improved battery systems, apparatuses, and methods for use in electric air, land, and marine vehicles and mobile, portable, and stationary electrical appliances and devices are provided. The systems employ acoustic and current manipulation of anode interface deposits including dendrites on or proximate lithium and other anodes. This invention may employ multistatic ultrasonic phased arrays and current modulation to 1) minimize deposit, e.g., dendrite, initiation and formation by acoustic stirring, 2) acoustically image dendritic growths to monitor changes in dendrite growths, 3) cue dendrite cleaning and battery shutdown to avoid short circuit, 4) induce failure in dendritic structure and shearing of at least a portion of the dendrite from the anode, and 5) transport sheared dendrites and other dead metal to a graveyard.