Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent
1979-01-22
1980-11-11
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Tape record
1791001DR, 179 6E, 360 69, G11B 1900, G11B 1518, H04M 1110
Patent
active
042336384
ABSTRACT:
A cassette substitution apparatus for use with a cassette central dictation recording system. Messages are recorded on interchangeable record members such as conventional tape cassettes. Apparatus is provided for detecting a condition of only a predetermined amount of recording time remaining on a cassette. Substitution of a second cassette for the first cassette then takes place a predetermined amount of time after detection of this condition independently of whether the dictator attempts to operate the recorder subsequent to detection of the predetermined amount of remaining tape.
REFERENCES:
patent: 2788395 (1957-04-01), Kobler
patent: 3584879 (1971-06-01), Ban
patent: 3765684 (1973-10-01), Sato
patent: 3820101 (1974-06-01), Bolick, Jr.
patent: 3845248 (1974-10-01), Ando
patent: 4092679 (1978-05-01), Sander
Bolick, Jr. Fred C.
Mohammadioun Said
Titus IV Theodore
Lanier Business Products, Inc.
Wolff John H.
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