KENNETH PARKER CRANDALL
Pilots at Woodland Trl, Saint Paul, MN
License number
Minnesota A0397342
Issued Date
Aug 2016
Expiration Date
Feb 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
3640 Woodland Trl, Saint Paul, MN 55123
Professional information
Electronic Polling And Calling Communication System
US Patent:
4088983, May 9, 1978
Filed:
Oct 28, 1975
Appl. No.:
5/626233
Inventors:
Kenneth C. Crandall - Roseville MN
Assignee:
Elan Industries, Inc. - St. Paul MN
International Classification:
H04Q 900
US Classification:
340147R
Abstract:
In an electronic communication system, having a central transmitting station and N remote receiving stations, the central station sends out a signal train consisting of a wide reset or synchronizing pulse (R) and a series of N narrower time-sequenced or time-slotted clock pulses (C). An intermediate width station selector pulse (S) in the signal train designates a call to a particular remote station. The receiving stations are equipped to recognize, acknowledge and respond to the signal train in the correct fashion if in the calling mode or in the polling mode of operation.