US4091373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective calling receiver
Assignee: Seiko Instruments Inc
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Filing: 1976-09-09
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Granted: 1978-05-23
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Expires: 1996-09-09
Abstract
Abstract A selective calling receiver comprises a resettable sound circuit for generating an audible calling sound in response to a calling message, a display circuit for visually displaying a message and a control circuit which is manually operable to reset the sound circuit and simultaneously activate the visual display circuit so that the message can be read.
Inventors
- 👤 Junpei Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:56
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G09G3/06; G09G3/12; G09G3/14; G08; G08B; G08B7/00; G08B7/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A selective calling receiver comprising sound circuit means for generating an audible sound in response to a calling message received from a remote transmitter, a register for receiving and storing a coded message from said transmitter, electronic display means for visually displaying said coded message received from said register, gating means for controlling the transmission of said coded message from said register to said display means and a control circuit including a manual switch and means for terminating said audible sound and resetting said sound circuit and for activating said gating means for transmission of said coded message from said register to said display means upon operation of said manual switch.
Claim 2
Dependent Claim
111 words
A selective calling receiver comprising sound circuit means for generating an audible sound in response to a calling message received from a remote transmitter, a register for receiving and storing a coded message from said transmitter, electronic display means for visually displaying said coded message received from said register, gating means for controlling the transmission of said coded message from said register to said display means and a control circuit including a manual switch and means for terminating said audible sound and resetting said sound circuit and for activating said gating means for transmission of said coded message from said register to said display means upon operation of said manual switch.
Claim 3
Dependent Claim
22 words
A selective calling receiver according to claim 1, in which said sound circuit means is normally continually responsive to said calling message.
Claim 4
Dependent Claim
41 words
A selective calling receiver according to claim 1, in which said sound circuit means comprises an R-S flip-flop, an astable multivibrator connected to the output of said flip-flop and a buffer amplifier and speaker connected to the output of said multivibrator.
Claim 5
Dependent Claim
31 words
A selective calling receiver according to claim 3, in which said R-S flip-flop comprises two cross-connected NAND circuits, one of said NAND circuits having an input connected with said control circuit.
Claim 6
Dependent Claim
54 words
A selective calling receiver according to claim 1, in which said gating means comprises a plurality of transmission gates for connecting said register with said display means, means for receiving a driving pulse from a pulse source, and means for periodically switching said transmission gates on and off in synchronism with said driving pulse.
Claim 7
Dependent Claim
58 words
A selective calling receiver according to claim 5, in which said gating means further comprises a plurality of NAND circuits having outputs connected with control terminals of said transmission gates and with said display circuit means, each of said NAND circuits having an input connected with said control circuit and an input connected with said pulse receiving means.
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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |