Data recording system having improved automatic rewrite capabili

Details Data recording system having improved automatic rewrite capabili Data recording system having improved automatic rewrite capabili

1992-02-28

1994-08-23

Beausoliel, Jr., Robert W.

Excavating

371 381, 360 49, 360 53, G06F 1100

Patent

active

053413784

ABSTRACT:
A recording and reproducing system records blocks of user data of predetermined size by reformatting the user data blocks into physical blocks that are recorded on tape. Each physical block is recorded as a double frame on a set of successive helical tracks, preferably 32 tracks. The system has the capability of verifying whether a physical block has been accurately recorded, and if not, the system automatically rewrites the physical block downstream without stopping or repositioning the tape. If an accuracy verification confirmation does not occur until a next physical block is being recorded, the system demarks or invalidates that physical block being written, and rewrites both the failed physical block and that following physical block downstream of that physical block being written.

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Proposed SMPTE Standard for Television Digital Component and Composite Recording, SMPTE Journal, Mar. 1992.
John Watkinson, The D-2 Digital Video Recorder, 1990 pp. 143-183.

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