Diagnostics for a Microprocessor Based Video Tape Recorder

Author(s): M. Glen Rose ; Gary Warren
Publisher: Society of Motion Picture and Television Engineers
Publication Date: 1 February 1983
Conference Location: San Francisco, CA, USA
Conference Date: 4 February 1983
Page(s): 233 - 241
ISBN (Paper): 978-1-61482-913-3
DOI: 10.5594/M00610



The recent practical availability of moderate cost microprocessor chips and memory IC's has resulted in a revolutionary change in the design of VTR machine control and servo systems. In the past VTR machine control consisted of arrangements of discrete IC devices operating as both combinational and sequential logic circuits. Now machine control is dictated by software instructions contained in IC memory chips interconnected with a microprocessor IC to form a computer control structure. The result is a control system with logic density orders of magnitude greater than previously available.