Gcr data write control apparatus

Details Gcr data write control apparatus Gcr data write control apparatus

G - Physics

06

F

352/19.1

G06F 7/22 (2006.01) G11B 20/12 (2006.01)

Patent

CA 1139434

SPECIFICATION OF STANLEY I. FRIEDMAN, CHARLES P. COBEEN AND HERBERT K. JACOBSTHAL FOR GCR DATA WRITE CONTROL APPARATUS ABSTRACT OF THE DISCLOSURE This relates to an apparatus for converting raw data into GCR data and for controlling the recording of GCR data on magnetic tape. An ordered series of instructions is stored in a first programmable read only memory (PROM). A second PROM contains a special character table and a code conversion table, and receives raw data. A third PROM stores addresses which are used to access the second PROM and are indicative of whether raw data is to be converted or a special character is to be generated. 5202804

342161

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