Positioning system and formatting scheme for magnetic tape...

Details Positioning system and formatting scheme for magnetic tape... Positioning system and formatting scheme for magnetic tape...

G - Physics

11

B

352/21.21

G11B 5/008 (2006.01) G11B 15/02 (2006.01) G11B 27/10 (2006.01) G11B 27/30 (2006.01)

Patent

CA 1139436

83-233F POSITIONING SYSTEM AND FORMATTING SCHEME FOR MAGNETIC TAPE MEDIA Abstract of the Disclosure A positioning system (30) for a magnetic tape system that utilizes a multiple record recording format wherein positioning data that marks the beginning of record segments (16), the beginning of the tape medium (11), and the ending of the tape medium (12) are pre-recorded at one-fourth of the bit density of work data (14, 15) so that positioning data may be more accurately read at a higher tape speed during a record seek mode of operation. The system also includes detector circuitry (FIG. 5A, 5C) that is enabled only upon detecting positioning data and that identifies the positioning data as an inter-record mark signal, beginning of tape signal, or an ending of tape signal. A tape drive controller (31) is responsive to the detection circuitry for controlling the speed and direction of the magnetic tape.

353072

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