Clarence V Johnson

Author:

Clarence Shole Johnson

ISBN #:

0415940737

Author:

Clarence Shole Johnson

ISBN #:

0415940745

Author:

Clarence R. Johnson

ISBN #:

0404164560

Author:

Clarence Johnson

ISBN #:

0618543368

Author:

Clarence Johnson

ISBN #:

0741427818

Author:

Clarence D. Johnson

ISBN #:

0520091329

Author:

Clarence D. Johnson

ISBN #:

0891082492

Author:

Clarence D. Johnson

ISBN #:

0891083030

US Patent:

40414418, Aug 9, 1977

Filed:

Aug 13, 1976

Appl. No.:

5/714436

Inventors:

Clarence S. Johnson - San Diego CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01S 966
G01S 754

US Classification:

340 3R

Abstract:

Diver carried transducers and electronic instrumentation are provided which ill enable a diver to approximate the directional and discriminatory resolution of marine mammals. An ensonifying signal above the audio spectrum is projected and echo signals are digitized. Next, they are transformed to within the audio spectrum to be capable of being resolved by a diver. Consequently, the location, shape and composition of objects may be discerned without visual verification.

US Patent:

50124528, Apr 30, 1991

Filed:

May 1, 1972

Appl. No.:

5/249080

Inventors:

Clarence S. Johnson - San Diego CA
Clarence G. Blanc - Escondido CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H04K 300

US Classification:

367 1

Abstract:

A transducer projects bursts of ultrasonic energy having broadbandwidths stantially identical to the energy pulses transmitted by a porpoise or dolphin. Immediately prior to the projection of the broadband ultrasonic signals, a range gate pulse is transmitted which, necessarily, first reaches the target and is reflected back toward a hydrophone carried adjacent the transducer-projector. At the termination of the reflected range gate pulse, the reflected broadband ultrasonic signals are gated into a pulse stretcher. During the relatively long intervals between the time that successive bursts of the broadband ultrasonic signals are projected or received, the pulse stretcher functions to translate and divide the broadband ultrasonic signals into signals lying within the audio spectrum. Due to the uniquely connected analog-to-digital, buffer storage, and digital-to-analog circuit components, the translation from the ultrasonic spectrum to the audio spectrum is done in a real-time basis to provide an audio representation having substantially the same information content as the ultrasonic signals.

US Patent:

39862208, Oct 19, 1976

Filed:

Jul 7, 1975

Appl. No.:

5/594137

Inventors:

Clarence S. Johnson - San Diego CA

International Classification:

B63C 916

US Classification:

9311

Abstract:

An improved shark screen reduces the possibility of a survivor of a shipwreck or air disaster from being attacked by sharks. A thin film bag is vacuum packed and stored in a cigarette package sized container. After it is unfolded and filled with water, the disaster victim crawls inside. A small inflated annular chamber at the top of the bag ensures that it remains in an upright position and presents an even protuberance-free surface. The top is closed by a drawstring to lower the screen's above-water profile and hides its occupant.