Personics Corporation

Riptide Bioscience, Inc.

Charles E Garvin

Jesse M Jaynes

George R Martin

Henry Wilfred Lopez

John C Weitz

Clayton Yates

Hugh Macdonald

Thomas D Sharples

Michael Poimboeuf

Ichyterra Ganapathy

Data processing system for high-speed reproduction of musical recordings at a point-of-sale terminal utilizes optical CD music ROM banks of master programs prerecorded by a Dolby ADM (adaptive delta modulated) technique to condense their 'information' content. Condensation permits higher data throughput during high-speed reproduction. In a 'premastering' process to make encoded masters, a special multiplexer board provides interfacing between Dolby ADM digital audio data and a conventional data processing system. The multiplexer board performs computer-like data blocking and also writes a unique sync code directly in the data block. The data processing system also catalogs and edits the blocked digital audio; places encrypted catalog, pricing, and other indicia in the data file representing the music; and sends the data file to convention 16-bit PCM file writer for making the encoded CD music ROMs which contain the ADM data representing the encoded audio program. A high-speed reproduction device, under control of a desk top personal computer, extracts timing and ADM data from the CD music ROM at high speed and controls high-speed tape drives to compile selected recordings on a single cassette tape in a form compatible with Dolby B noise reduction.

High-speed reproduction facility for audio programs

Growing community of inventors

San Francisco, CA, United States of America

Charles E Garvin