US4839641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pager receiver capable of controlling an internal state by a call signal
Assignee: NEC Corp
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Filing: 1988-06-09
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Granted: 1989-06-13
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Expires: 2008-06-09
Abstract
Abstract In a pager receiver operable in response to a call signal comprising a first part including a call number signal, a second part including a message signal, and an intermediate part placed between the first and second parts, the intermediate part conveys a time interval signal representative of a length of a message carried by the message signal. When the call number signal is destined to the pager receiver, a receiving circuit is put into an operating mode during the length of the message. Otherwise, the receiving circuit is kept in a nonoperating mode during the length of the message. The time interval signal is therefore detected even when the call number signal is not destined to the pager receiver. The intermediate part may comprise a message control signal defining message control operations of the pager receiver and a time signal for specifying a transmission time instant of the message signal. A wide variety of the message control operations can be designated by the messagew control signal.
Inventors
- 👤 Toshihiro Mori
- 👤 Takashi Ohyagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:30
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/023; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
329 words
In a pager receiver capable of responding to call signals, each comprising a first part, a second part, and an intermediate part between said first and second parts, said first part comprising a call number signal specific to said pager receiver while said second part comprises a message signal representative of a message, said pager receiver comprising a power source for supplying a voltage, controllable switching means connected to said power source and responsive to a switching signal for selectively switching the voltage from said power source between an on-state and an off-state, reception means adapted to be put into an operating mode and a nonoperating mode under control of said switching means for receiving said call signals in said operating mode and producing reception call signals representative of the call signals received during said operating mode, processing means responsive to said reception call signals for processing said first, second, and intermediate parts of each of the call signals received during said operating mode to produce a selection signal indicative of either of said on-state or said off-state, and signal supply means for supplying said selection signal as said switching signal to said switching means to selectively put said reception means into said operating and said nonoperating modes, said reception means being controlled by said controllable switching means during reception of no call signals so that said reception means is periodically put into said operating mode which lasts a first interval of time, the improvement wherein: said intermediate part comprises a time interval signal representative of a length of the message included in the second part following said intermediate part; said processing means comprising: producing means responsive to said reception call signals for producing said selection signal with reference to said time interval signal to switch said switching means in dependency upon said message length so that said first interval is modified into a second interval of time longer than said first interval when said pager receiver is initialized.
Claim 2
Dependent Claim
329 words
In a pager receiver capable of responding to call signals, each comprising a first part, a second part, and an intermediate part between said first and second parts, said first part comprising a call number signal specific to said pager receiver while said second part comprises a message signal representative of a message, said pager receiver comprising a power source for supplying a voltage, controllable switching means connected to said power source and responsive to a switching signal for selectively switching the voltage from said power source between an on-state and an off-state, reception means adapted to be put into an operating mode and a nonoperating mode under control of said switching means for receiving said call signals in said operating mode and producing reception call signals representative of the call signals received during said operating mode, processing means responsive to said reception call signals for processing said first, second, and intermediate parts of each of the call signals received during said operating mode to produce a selection signal indicative of either of said on-state or said off-state, and signal supply means for supplying said selection signal as said switching signal to said switching means to selectively put said reception means into said operating and said nonoperating modes, said reception means being controlled by said controllable switching means during reception of no call signals so that said reception means is periodically put into said operating mode which lasts a first interval of time, the improvement wherein: said intermediate part comprises a time interval signal representative of a length of the message included in the second part following said intermediate part; said processing means comprising: producing means responsive to said reception call signals for producing said selection signal with reference to said time interval signal to switch said switching means in dependency upon said message length so that said first interval is modified into a second interval of time longer than said first interval when said pager receiver is initialized.
Claim 3
Dependent Claim
34 words
A pager receiver as claimed in claim 1, said receiver further comprising an alarm unit, wherein said alarm unit is driven on condition that said intermediate signal is not detected during said first interval.
Claim 4
Dependent Claim
43 words
A pager receiver as claimed in claim 1, wherein said producing means produces said selection signal such that said time interval signal can be received even when said reception call signals do not include said call number signal specific to said pager receiver.
Claim 5
Dependent Claim
81 words
A pager receiver as claimed in claim 3, wherein said producing means comprises: detecting means responsive to said reception call signals for detecting said call number signal specific to said pager receiver together with said time interval signal to produce a detection signal representative of a result of detection of said call number signal; and signal producing means coupled to said detecting means for producing said selection signal with reference to both of said detection signal and said time interval signal.
Claim 6
Dependent Claim
50 words
A pager receiver as claimed in claim 4, wherein said signal producing means comprises: measuring means responsive to said time interval signal for measuring said length of the message carried by said second part following said intermediate part; and means coupled to said measuring means for producing said selection signal.
Claim 7
Dependent Claim
38 words
A pager receiver as claimed in claim 1, wherein said intermediate part comprises an additional signal which follows said time interval signal and which defines a message processing operation for processing the message signal succeeding said additional signal.
Claim 8
Dependent Claim
41 words
A pager receiver as claimed in claim 6, wherein said intermediate part further comprises a time signal which carries time information representative of transmission time of the message signal and which is placed between said additional signal and the message signal.
Claim 9
Dependent Claim
37 words
A pager receiver as claimed in claim 6, wherein said additional signal indicates, as said message processing operation, either of registration and alteration of a predetermined identification number carried by the message signal following said additional signal.
Claim 10
Dependent Claim
35 words
A pager receiver as claimed in claim 8, wherein said processing means further comprises: extracting means responsive to said additional signal and said message signal for extracting said predetermined identification number from said message signal.
Claim 11
Dependent Claim
35 words
A pager receiver as claimed in claim 9, wherein said processing means comprises: storage means coupled to said extracting means for storing said predetermined identification number when said additional signal is indicative of said registration.
Claim 12
Dependent Claim
54 words
A pager receiver as claimed in claim 10, wherein said processing means comprises: means coupled to said storage means for altering said identification number to a different identification number when said additional signal is indicative of said alteration of said predetermined identification number and said different identification number is followed by said additional signal.
Claim 13
Dependent Claim
33 words
A pager receiver as claimed in claim 6, wherein said additional signal indicates, as said message processing operation, a message arrangement of the message carried by the message signal following said additional signal.
Claim 14
Dependent Claim
122 words
A paging method for use in paging a pager receiver by call signals, each call signal comprising a first part and a second part which comprise a call number signal specific to said pager receiver and a message signal representative of a message, respectively, said pager receiver being periodically put into operating and nonoperating modes on nonreception of said call signals, said method comprising the steps of: transmitting to said pager receiver an intermediate part which is between said first and second parts and which carries a time interval signal representative of a length of the message included in the second part following said intermediate part; and controlling an internal state of said pager receiver in response to said time interval signal.
Claim 15
Dependent Claim
122 words
A paging method for use in paging a pager receiver by call signals, each call signal comprising a first part and a second part which comprise a call number signal specific to said pager receiver and a message signal representative of a message, respectively, said pager receiver being periodically put into operating and nonoperating modes on nonreception of said call signals, said method comprising the steps of: transmitting to said pager receiver an intermediate part which is between said first and second parts and which carries a time interval signal representative of a length of the message included in the second part following said intermediate part; and controlling an internal state of said pager receiver in response to said time interval signal.
Claim 16
Dependent Claim
28 words
A paging method as claimed in claim 13, wherein said time interval signal is for modifying a duration for said operating mode in response to said intermediate signal.
Claim 17
Dependent Claim
22 words
A paging method as claimed in claim 13, wherein said intermediate signal is for controlling a transmission time instant of the message.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |