Dynamic magnetic information storage or retrieval – Head – Core
Patent
1983-07-18
1986-02-18
Richardson, Robert L.
Dynamic magnetic information storage or retrieval
Head
Core
360105, G11B 500, G11B 2100
Patent
active
045714592
ABSTRACT:
A telephone answering machine produces a prerecorded reply message in response to detection of a calling signal from a caller and thereafter records a message of a caller in response to completion of the reproduction of the reply message. The telephone answering machine includes first and second tape drive mechanism. The first tape drive mechanism is used for running a first magnetic tape on which the reply message of a called party is prerecorded. The second tape drive mechanism is used for running a second magnetic tape on which a message of a caller is to be recorded. The first and second tape drive mechanisms are controlled by a single common operation control mechanism. The operation control mechanism includes a movable head plate on which first and second pinch-rollers of the tape drive mechanisms are mounted, and a cam gear which has first and second drive cam grooves to control the movement of the head plate in two different directions. When the first drive cam groove controls the movement of the head plate, the first pinch-roller only contacts a corresponding capstan to run the first magnetic tape for reproduction of the reply message. When the second drive cam groove controls the movement of the head plate, the second pinch-roller only contacts a corresponding capstan to run the second magnetic tape for recording of a caller's message.
REFERENCES:
patent: 3959591 (1976-05-01), Darwood
patent: 3967068 (1976-06-01), Shinohara
patent: 4463396 (1984-07-01), Osanai
Matsushita Electric - Industrial Co., Ltd.
Richardson Robert L.
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