EP0177971A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pager receiver capable of controlling an internal state by a call signal
Assignee: NEC Corp
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Filing: 1985-10-11
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Granted: —
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Expires: 2005-10-11
Abstract
Abstract In a pager receiver (21) 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 (21), a receiving circuit (24) is put into an operating mode during the length of the message. Otherwise, the receiving circuit (24) 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 (21). The intermediate part may comprise a message control signal defining message control operations of the pager receiver (21) 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 message control signal.
Inventors
- 👤 Toshihiro Mori
- 👤 Takashi Ohyagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 02:25
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/023; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
203 words
A pager receiver capable of responding to call signals, each comprising a first part, a second part after said first 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 reception means put into an operating mode and a nonoperating mode for receiving said call signals in said operating mode to produce reception call signals representative of the call signals received during said operating mode and 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 operating and nonoperating modes, 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 put said reception means into said operating and nonoperating modes in dependency upon said message length.
Claim 2
Dependent Claim
203 words
A pager receiver capable of responding to call signals, each comprising a first part, a second part after said first 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 reception means put into an operating mode and a nonoperating mode for receiving said call signals in said operating mode to produce reception call signals representative of the call signals received during said operating mode and 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 operating and nonoperating modes, 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 put said reception means into said operating and nonoperating modes in dependency upon said message length.
Claim 3
Dependent Claim
57 words
A pager receiver as claimed in Claim 1, said detection means being repeatedly put into said operating mode and which lasts a first interval of time so long as no call signals are received, wherein said first interval is modified into a second interval of time longer than said first interval when said pager receiver is initialized.
Claim 4
Dependent Claim
34 words
A pager receiver as claimed in Claim 2, 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 5
Dependent Claim
47 words
A pager receiver as claimed in any of Claims 1 to 3, 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 6
Dependent Claim
86 words
A pager receiver as claimed in Claim 4, wherein said producing means comprises: detecting means responsive to said reception call signals for detecting said call number signal specific to said pager receiver to produce a detection signal representative of a result of detection of said call number signal; control signal producing means responsive to said detection signal and said time interval signal for producing a control signal for controlling said operating and nonoperating modes; and means responsive to said control signal for producing said selection signal.
Claim 7
Dependent Claim
51 words
A pager receiver as claimed in Claim 5, wherein said control 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 control signal.
Claim 8
Dependent Claim
42 words
A pager receiver as claimed in any of Claims 1 to 6, 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 9
Dependent Claim
41 words
A pager receiver as claimed in Claim 7, 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 10
Dependent Claim
39 words
A pager receiver as claimed in Claim 7 or 8, 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 11
Dependent Claim
35 words
A pager receiver as claimed in Claim 9, 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 12
Dependent Claim
35 words
A pager receiver as claimed in Claim 10, 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 13
Dependent Claim
54 words
A pager receiver as claimed in Claim 11, 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 14
Dependent Claim
37 words
A pager receiver as claimed in any of Claims 7 to 12, 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 15
Dependent Claim
79 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 method comprising the steps of: transmitting an intermediate part between said first and second parts to said pager receiver; and controlling an internal state of said pager receiver in response to said intermediate signal.
Claim 16
Dependent Claim
79 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 method comprising the steps of: transmitting an intermediate part between said first and second parts to said pager receiver; and controlling an internal state of said pager receiver in response to said intermediate signal.
Claim 17
Dependent Claim
47 words
A paging method as claimed in Claim 14, said pager receiver being put as said internal state into operating and nonoperating modes on nonreception of said call signals, wherein said intermediate signal is for modifying a duration for said operating mode in response to said intermediate signal.
Claim 18
Dependent Claim
22 words
A paging method as claimed in Claim 14, wherein said intermediate signal is for controlling a transmission time instant of the message.
References Cited (Backward Citations)
No citation records indexed.
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