Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the record
Patent
1979-02-14
1981-11-24
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the record
360744, G11B 1548
Patent
active
043027865
ABSTRACT:
An apparatus for detecting the stop of a magnetic tape traveling in a magnetic recording and reproducing device which carries out a plurality of functional modes and in which the magnetic tape travels at a speed corresponding to a selected functional mode, wherein a pulse generator produces one pulse per rotation of a magnetic tape-driving section. A time interval between the respective pulses issued from said pulse generator is determined from a number of reference pulses having a reference frequency which are delivered from a reference pulse generator and are later counted by a counter. A longer traveling time of a magnetic tape than that specified for the different functional modes is preset in a numeral code generator in the form of a numeral code. When the traveling time of a magnetic tape is found to be longer than that present for a selected functional mode, a detection signal based on an output count from the counter is issued to judge whether the magnetic tape has ceased to run.
REFERENCES:
patent: 3946436 (1976-03-01), Takashino
patent: 4000518 (1976-12-01), Stearns
patent: 4140896 (1979-02-01), Robertson
patent: 4172266 (1979-10-01), Onishi
patent: 4177488 (1979-12-01), Sakai
Canney Vincent P.
Casio Computer Co. Ltd.
Olympus Optical Co,. Ltd.
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