Computer tape and reel signature for computer data file security

Details Computer tape and reel signature for computer data file security Computer tape and reel signature for computer data file security

1979-06-29

1982-07-06

Shaw, Gareth D.

Measuring and testing

Miscellaneous

364900, G11B 500, G11B 574

Patent

active

043376592

ABSTRACT:
Disclosed is a method and apparatus whereby each time a tape is wound upon a prescribed reel, the winding pattern may be assumed to leave the array of tape-edges in a unique "edge profile" represented by the position of each winding edge as viewed from one side of the reel along a radial direction--this "profile" being interpreted as a "winding signature"; the signature may be detected and recorded in a convenient encoded fashion for possible use in uniquely identifying and documenting each unspooling/rewind sequence to thereby monitor tape use. Illustrative tape is shown wound on a conventional reel, as well as means for detecting the "wrap profile" ("edge profile") of the tape edges on the reel.

REFERENCES:
patent: 2995727 (1961-08-01), Quade
patent: 3632991 (1972-01-01), Brinning
patent: 3637992 (1972-01-01), Ruesch
patent: 3639876 (1972-07-01), Faith et al.
patent: 3763483 (1973-10-01), Urmenyi
patent: 3778802 (1973-12-01), Wallace
patent: 3808405 (1974-04-01), Johnson et al.
patent: 3859649 (1975-01-01), Slack
patent: 3913200 (1975-10-01), Kossor
patent: 4018947 (1977-04-01), Stone, Jr.
patent: 4141492 (1979-02-01), Michel et al.
P. E. Anuta et al., "Map Matching System" in IBM Technical Disclosure Bulletin, vol. 7, No. 5, Oct. 1964, pp. 372-373.
"Magnetic Tape Trends", Ampex Corp. Bulletin No. 12, Jan. 1967, pp. 1-6.
R. P. James, "Finger-Print Sensor" in IBM Technical Disclosure Bulletin, vol. 14, No. 11, Apr. 1972, p. 3361.

Affiliated with

Also associated with

Rating

Computer tape and reel signature for computer data file security does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Computer tape and reel signature for computer data file security, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer tape and reel signature for computer data file security will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2163715