Data recorder and method of operation

Dynamic magnetic information storage or retrieval – General processing of a digital signal – Data in specific format

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Details

360 32, G11B 509

Patent

active

051445018

ABSTRACT:
In this invention, a predetermined amount of data is given as one frame, and data having a predetermined format is recorded for each frame. A first area recording main data and a second area recording sub data are formed in each frame. Plural types of units each consisting of a plurality of frames are set, and a number of first units from a leading end of a recording medium and the numbers of other units from the leading end of the recording medium to a trailing end of the first units are recorded in the second area of a frame constituting the unit including the trailing end, thus facilitating a high-speed search operation.

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patent: 4893199 (1990-01-01), Okada
patent: 4899232 (1990-02-01), Odaka et al.
patent: 5012459 (1990-04-01), Odaka et al.
Computer Technology Review, vol. 5, n. 4, 1985, Los Angeles US, pp.107-114; S. Henry and M. Niquette; "The PC/T Tape Format Makes Data Backup Easier, More Reliable".
IEEE Transactions on Consumer Electronics, vol. CE-33, No. 3, Aug. 1987, New York US, pp.275-284; T. Adachi et al.; "A Fast Random Accessing Scheme for R-DAT".
IEEE Transactions on Consumer Electronics, vol. CE-32, No. 3, Aug. 1986, New York US, pp.433-440; K. Odaka et al.; "Format of Pre-recorded R-DAT Tape and Results of High Speed Duplication".
Proceedings of the International Congress on Transportation Electronics, vol. P-183, Oct. 1986, Warrendale, PA, USA, pp. 321-331; M. Finer; "Sony Digital Audio Tape (DAT)".

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