Method for transparently marking the location of data files on r

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

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360 49, 360 721, 360 722, G11B 509

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active

054502500

ABSTRACT:
Separations between the end of one data file and the beginning of the next data file are recognized, without utilizing an entire data storage block by means of a controlling program for a peripheral recording device monitoring the control information headers of helically stored data on a recording tape. When files are stored on the recording tape, the controlling program increments an increase of a file section number by one and increments to zero a data block number at the beginning of a new data file. When the recording device is reading the recording tape and there is detected an incrementation of the file section number and a zero value for a data block number, a recognition is made that this data indicates the end of one data file and the beginning of another data file.

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Freeman, Donald E., et al., "I/O Design=Data Management in Operating Systems", 1977 by Hayden Book Co., Inc., pp. 64-81.
Hanson, Owen, "Design of Computer Data Files", 1982, Computer Science Press, pp. 48-62.
Hewlett Packard Company/Sony Corporation, "Digital Data Storage Format Description"; Revision B, Oct. 1988, pp. 2-7, 2-8, 3-3, and 4-1.

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