US3586780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic telephone number information system
Assignee: Panasonic Holdings Corp
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Filing: 1969-07-07
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Granted: 1971-06-22
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Expires: 1989-07-07
Abstract
Abstract The present invention relates to a device for automatically informing a calling subscriber that the telephone number he wishes to contact has been changed; wherein when a subscriber is calling another subscriber and is unaware of the change, the calling subscriber is automatically informed of the changed or newly allotted number; wherein the setting and the modification of any individual number to be informed can be easily performed; and wherein the information of a plurality of changed or newly allotted numbers for many subscribers can be achieved through the use of a single device.
Inventors
- 👤 Eiji Kezuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:31
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/487; H04M3/4872; H04M3/4874
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
187 words
An automatic telephone information device, comprising secondary equipment having means connected with the line of a subscriber whose telephone number is changed, said means rectifying the ringing signal from an exchange to send the rectified signal as a line connection signal for a calling subscriber back to said exchange and signalling said calling subscriber; a recording means rotatable at a constant speed, having control signal tracks and number signal tracks in which the numbers 0 to 9 are recorded respectively as a plurality of vocal announcements; a ring counter triggered sequentially by successive signals delivered from said control signal tracks; a magnetic core matrix coupled to said recording means, means applying matrix vocal information signals corresponding to 0 to 9 only to a set of cores connected commonly with one of the outputs of said ring counter, which output delivers an output signal; and a detecting wire operatively connected with said secondary equipment and magnetically coupled to a group of cores, each core being selected according to a changed telephone number among each set of cores commonly connected with one of the outputs of said ring counter.
Claim 2
Dependent Claim
187 words
An automatic telephone information device, comprising secondary equipment having means connected with the line of a subscriber whose telephone number is changed, said means rectifying the ringing signal from an exchange to send the rectified signal as a line connection signal for a calling subscriber back to said exchange and signalling said calling subscriber; a recording means rotatable at a constant speed, having control signal tracks and number signal tracks in which the numbers 0 to 9 are recorded respectively as a plurality of vocal announcements; a ring counter triggered sequentially by successive signals delivered from said control signal tracks; a magnetic core matrix coupled to said recording means, means applying matrix vocal information signals corresponding to 0 to 9 only to a set of cores connected commonly with one of the outputs of said ring counter, which output delivers an output signal; and a detecting wire operatively connected with said secondary equipment and magnetically coupled to a group of cores, each core being selected according to a changed telephone number among each set of cores commonly connected with one of the outputs of said ring counter.
Claim 3
Dependent Claim
17 words
A device according to claim 1, wherein said secondary equipment is connected with a called subscriber''s line.
Claim 4
Dependent Claim
50 words
A device according to claim 1, wherein the numbers of said recording means and said group of cores are both independent of the increase in the number of changed telephone numbers and wherein the numbers of secondary equipment and detecting wires are equal to the number of changed telephone numbers.
Claim 5
Dependent Claim
25 words
A device according to claim 1, wherein said recording means comprises a magnetic drum and detector means to detect their respective information from said drum.
Claim 6
Dependent Claim
74 words
A device according to claim 1, wherein said recording means comprises a rotary drum wherein said control signal tracks and number signal tracks are formed on a transparent substrate provided peripherally on the drum surface; a light source for producing at least one light spot at a portion of each of said control signal tracks and said number tracks; and a plurality of photoconductive transducer means to detect the information stored on the drum.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |