US3898385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic telephone answering apparatus
Assignee: Pioneer Corp
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Filing: 1973-07-09
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Granted: 1975-08-05
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Expires: 1993-07-09
Abstract
Abstract A logic circuit which detects the fact that an incoming message recorder tape in a telephone answering apparatus is full and causes the tape drive to be disabled. The circuit also detects abnormal conditions, such as breaking of the tape or under-speed rotation of either the tape supply or take-up reels. The circuit performs these functions without requiring any special processing or modification of the tape.
Inventors
- 👤 Makoto Shimomiti
- 👤 Tadahisa Iwasaki
- 👤 Tateki Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:43
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/6515
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
229 words
An automatic telephone answering apparatus comprising: a. tape drive means for driving a magnetic recording tape for recording a message incoming from a caller, b. a pair of rotation detecting means for respectively generating output signals when the rotational speeds of a supply reel means and a take-up reel means, both of which are driven by said tape drive means, become zero or lower than a predetermined speed value, c. first AND circuit means for generating an output signal only when both said rotation detecting means generate output signals, d. first OR circuit means for generating an output signal when at least one of said rotation detecting means generates an output signal, e. second AND circuit means for generating an output signal only when said first OR circuit generates an output signal in the absence of an output signal from said first AND circuit, f. third AND circuit means for generating an output signal only when said first AND circuit generates an output signal and said magnetic recording tape is in a recording state, g. second OR circuit means for generating an output signal when at least one of said second and third AND circuit means generates an output signal, and h. stop means responsive to an output signal from said second OR circuit meaNs for disabling said tape drive means, thereby stopping the driving of said take-up reel.
Claim 2
Dependent Claim
229 words
An automatic telephone answering apparatus comprising: a. tape drive means for driving a magnetic recording tape for recording a message incoming from a caller, b. a pair of rotation detecting means for respectively generating output signals when the rotational speeds of a supply reel means and a take-up reel means, both of which are driven by said tape drive means, become zero or lower than a predetermined speed value, c. first AND circuit means for generating an output signal only when both said rotation detecting means generate output signals, d. first OR circuit means for generating an output signal when at least one of said rotation detecting means generates an output signal, e. second AND circuit means for generating an output signal only when said first OR circuit generates an output signal in the absence of an output signal from said first AND circuit, f. third AND circuit means for generating an output signal only when said first AND circuit generates an output signal and said magnetic recording tape is in a recording state, g. second OR circuit means for generating an output signal when at least one of said second and third AND circuit means generates an output signal, and h. stop means responsive to an output signal from said second OR circuit meaNs for disabling said tape drive means, thereby stopping the driving of said take-up reel.
Claim 3
Dependent Claim
63 words
An automatic telephone answering apparatus as defined in claim 1, further comprising answer message reproducer means for normally sending out a first recorded answer message in response to an incoming calling signal, and answer message changer means responsive to the output signal from said second OR circuit means for causing said answer message reproducer means to send out a second recorded answer message.
Claim 4
Dependent Claim
140 words
An automatic telephone answering apparatus as defined in claim 1, further comprising: a. remote control signal detector means for receiving a special remote control signal from a caller and producing a special output signal in response thereto; b. means responsive to said special output signal for causing said tape drive means to rewind the magnetic recording tape having incoming caller messages recorded thereon; c. rewind state detector means responsive to the rewinding to generate a rewind state output signal; d. additional AND circuit means responsive to the coincidence of said rewind state output signal and said output signal from said first AND circuit means for generating a reproduce signal; and e. means responsive to said reproduce signal to cause said tape drive means to operate in the reproducing state, whereby the messages recorded on said magnetic recording tape are reproduced.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |