Walter E Johansen

US Patent:

45721890, Feb 25, 1986

Filed:

Oct 11, 1983

Appl. No.:

6/540299

Inventors:

Chadwick F. Smith - Los Angeles CA
Walter E. Johansen - Los Angeles CA

International Classification:

A61N 506

US Classification:

128395

Abstract:

The present invention is an electronic controller for use with a laser system which includes a mechanical triggering device and which generates a beam of light energy in the infrared spectrum. The electronic controller includes a laser modulator which turns the laser system on and off at a frequency rate of two hundred cycles per second and a trigger/reset circuit which is electrically coupled to the mechanical triggering circuit. The trigger/reset circuit provides a trigger signal in its triggered state and a reset signal in its untriggered state. The electronic controller also includes a clock circuit which is electrically coupled to the triggering circuit and which provides clock signals in response to the trigger signal and a one-shot monostable, multivibrator circuit having an RC timing circuit which is electrically coupled to the clock circuit and which controls the pulse width of its output signal in a range of 0. 005 seconds and 0. 1 seconds in response to the clock signals.

US Patent:

20020076049, Jun 20, 2002

Filed:

Dec 19, 2000

Appl. No.:

09/740717

Inventors:

Patrick Boykin - Raleigh NC, US
Riccardo Boscolo - Culver City CA, US
Walter Johansen - Santa Monica CA, US

International Classification:

H04N007/167

US Classification:

380/211000, 725/031000

Abstract:

A distributing system includes an encoder, a perceptual encryption module and a server. The encoder encodes the file of high quality video as encoded data in MP3 format. The encoded file has a plurality of frames. Each frame has a header with a sync and side information and main information. The perceptual encryption module perceptually encrypts the encoded data in MP3 format to generate restricted video data as perceptually encrypted encoded data. The server with a memory bank stores and distributes the perceptually encrypted encoded data. A receiving system receiving system includes a receiver with a memory bank, a perceptual decryption module and a decoder. The receiver receives and stores the perceptually encrypted encoded data. The perceptual decryption module perceptually decrypts the perceptually encrypted encoded data to generate encoded data in MP3 format. The decoder decodes the file of encoded data in MP3 format to generate high quality video.