Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format
Patent
1992-02-28
1996-08-06
Hajec, Donald
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Data in specific format
360 39, 360 53, 360 722, G11B 509, G11B 1518
Patent
active
055439772
ABSTRACT:
A helical type tape 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. The system format includes helical tracks in which user data blocks are recorded and longitudinal tracks for storing address information relating to the physical layout of the tape and to the content of the recording in the helical area. The system includes a partition access bookkeeping feature that stores information relating to locations at which searching or recording has been performed during a current load of a tape in the system, which is useful in accomplishing efficient searching for user data recorded on the tape. The present invention is directed to system search capabilities, including longitudinal searching along the tape and searching in the helical recording area of the tape.
REFERENCES:
patent: Re31311 (1983-07-01), Miller
patent: 5091505 (1992-02-01), Odaka et al.
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.
Holter Jerry E.
Shih Lionel C.
Ampex Systems Corporation
Barbas Charles J.
Forbus Jr. T. N.
Greer Roger
Hajec Donald
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