End of rewind detection in a telephone answering device having r

Details End of rewind detection in a telephone answering device having r End of rewind detection in a telephone answering device having r

1981-01-12

1983-06-28

Faber, Alan

Dynamic magnetic information storage or retrieval

Head

Core

179 614, 179 613, 360 744, 360 742, H04M 164

Patent

active

043907512

ABSTRACT:
This telephone answering device has facilities for the remote controlled playout of previously recorded incoming messages. In response to receipt of a coded signal, a cam control mechanism positions the message tape drive motor first to rewind the incoming message tape, and then to drive the tape forward for remote playout of the messages. The control mechanism is configured to sense whether the tape drive motor is correctly positioned at the beginning of an answering cycle. If not, the cam control mechanism is actuated quickly to correctly position the tape drive motor. Thus the answering device will operate properly even in the event that the cam control mechanism was left in an improper position during the previous answering or remote playout cycle, for example, as a result of a power interrupt during that cycle.
Additionally, circuitry is disclosed for detecting the end-of-rewind of the incoming message tape by monitoring either (a) the audio signal produced by the playback head as the message tape is rewound, or (b) the brush noise of the message tape drive motor. An end-of-rewind signal is produced when the audio signal output or the brush noise terminates upon completion of rewind.

REFERENCES:
patent: 3461249 (1969-08-01), Kamoji
patent: 3991274 (1976-11-01), Darwood
patent: 4104487 (1978-08-01), Jacobson
patent: 4197532 (1980-04-01), Lawson

Affiliated with

Also associated with

Rating

End of rewind detection in a telephone answering device having r does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with End of rewind detection in a telephone answering device having r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and End of rewind detection in a telephone answering device having r will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-935031