Dynamic magnetic information storage or retrieval – Miscellaneous
Patent
1988-12-20
1991-01-29
Wolff, John H.
Dynamic magnetic information storage or retrieval
Miscellaneous
360 745, 360 7301, 242 7551, G11B 1548
Patent
active
049891120
ABSTRACT:
A tape cassette type detection apparatus has a tape transit control circuit which supplies a first control signal to a supply reel motor and a take-up reel motor and a second control signal thereto at timing delayed from the first control signal by a predetermined period of time to move a tape wound around a supply reel and a take-up reel in a predetermined direction during a predetermined period. Upon rotation of the supply and take-up reels, pulses are generated by pulse generators in response to the first and second control signals, and are counted by reel counters for periods set by measurement control circuits. Thereafter, the count values are supplied to a rotation ratio calculation circuit as first movement speed data. A pulse generator detects rotation of a capstan for moving the tape and generates pulses. The pulses generated by the pulse generator are counted by capstan counters. An operation circuit calculates the rotation ratio of the tape based on second movement speed data obtained by counting of the capstan counters and the first movement speed data obtained by the rotation ratio calculation circuit and supplied from a system control circuit. The operational circuit discriminates the tape of the tape cassette based on the rotation ratio of the tape in accordance with a signal from a tape-type data generator.
REFERENCES:
patent: 4160195 (1979-07-01), Sakamoto
patent: 4172231 (1979-10-01), d'Arc et al.
patent: 4232371 (1980-11-01), Kamoto
patent: 4357643 (1982-11-01), d'Arc
patent: 4398300 (1983-08-01), d'Arc et al.
patent: 4817887 (1989-04-01), Harigaya et al.
Kabushiki Kaisha Toshiba
Wolff John H.
LandOfFree
Apparatus for discriminating types of tape cassettes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for discriminating types of tape cassettes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for discriminating types of tape cassettes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-818497