Other

Phonetics, Inc.

Atlantic Development Company

Frederick F Dalessio

Bernard A Grae

Kenneth E Blanchard

Douglas R Price

David A Barr

Eugene C Johnson

Phillip H Jones

Remote communication monitor and telephonic alarm

In an apparatus for guiding or controlling a vessel over the center of an unmarked channel, a pair of ultrasonic transducers are mounted athwartship on the hull of the vessel and directed downwardly to transmit ultrasonic pulses and to receive corresponding pulses reflected from the floor of the body of water. Time durations between transmitted and corresponding received pulses are measured to determine floor or channel depth below the port and starboard sides of the vessel. The depths are digitally encoded and supplied to a comparator which generates a signal indicating whether deeper water is port or starboard of the vessel. The comparator signal is supplied to a display to instruct the navigator whether to steer port, starboard or to maintain course to guide the vessel over the center of the channel. The comparator signal may be also supplied to a rudder servo to automatically steer over the channel center. A digital filter is provided to eliminate any spurious readings obtained by the transducers.

Method of and apparatus for navigating unmarked channels

A portable, battery operated storage device for analyzing performances in athletic events, such as tennis, includes an electronic random access memory controlled by a keyboard, and a digital display. The memory contains individual storage locations corresponding to points earned and points lost for each play. In addition, up/down counters in the device accumulate total points gained and lost for all plays. The player or spectator keyboard enters data identifying each play and indicating whether a point was gained or lost. Points lost and points gained data for each play are stored in corresponding storage locations in the memory. Total points gained and lost are stored in the counters. After the game, the numbers of points gained and lost for each play are determined by accessing the memory and displaying the contents of each of the storage locations on the digital visual readout. Total points gained and lost are determined by displaying the contents of the counters.

Method of and device for analyzing performances in athletic events

Growing community of inventors

Aston, PA, United States of America

Frederick F Dalessio