Digital tape recorder having sync detection based on a correlati

Details Digital tape recorder having sync detection based on a correlati Digital tape recorder having sync detection based on a correlati

1996-02-02

1997-12-23

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data clocking

G11B 509

Patent

active

057012121

ABSTRACT:
An 8-9 converting circuit converts 8-bit data into 9-bit parallel data. A sync pattern/ID pattern adding circuit adds sync patterns and ID patterns to the 9-bit parallel data and sets values for the ID patterns according to a predetermined correlation between a position of an mth ID pattern and a distance from an nth sync pattern to an mth sync pattern. A parallel/serial converting circuit converts the parallel data into serial data and the resultant serial data is recorded on a tape. Data reproduced from a tape is supplied to a serial/parallel converting circuit which converts the serial data into parallel data. A sync pattern/ID pattern extracting circuit extracts sync patterns and ID patterns from the parallel data, extracting as valid an mth sync pattern whose corresponding mth ID pattern has a value set in accordance with the predetermined correlation. An 8-9 inverse converting circuit converts the parallel data into 8-bit data corresponding to the extracted sync patterns and ID patterns.

REFERENCES:
patent: 4618898 (1986-10-01), Young et al.
patent: 5357380 (1994-10-01), Bailey et al.
patent: 5392129 (1995-02-01), Ohtaka et al.
patent: 5426538 (1995-06-01), Kanota et al.
patent: 5546243 (1996-08-01), Setoyama

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