Patent EP0019178A2 successfully refreshed from Google Patents.
Patent EP0319219A2 successfully refreshed from Google Patents.
EP0319219A2
Expired / Lapsed
EP
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Paging apparatus having a battery saving function
Assignee: Toshiba Corp
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Filing: 1988-11-28
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Granted: —
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Expires: 2008-11-28
Abstract
Abstract A paging apparatus having a battery saving function comprises a power supply to a radio circuit and a power supply control circuit. Power is turned on periodically in synchronization with the detection of synchronization signals and is turned off responsive to the detection of a predetermined sequence. The power supply to the radio circuit remains switched off for a predetermined time period in response to the detection of the predetermined sequence in a specific code addressed to the paging apparatus.
Inventors
- 👤 Makoto C/O Patent Division Murai
- 👤 Kiyoshi C/O Patent Division Wagi
- 👤 Tatsuaki C/O Patent Division Sekigawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 20:36
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/44; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0212; H04W52/0216; H04W88/00; H04W88/02; H04W88/022; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
95 words
Paging apparatus comprising: receiving means for receiving signals broadcast over a predetermined radio channel; signal detecting means responsive to said receiving means for detecting synchronization signals and a predetermined signal sequence; power supply means for supplying said receiving means with power; power supply control means for controlling said power supply means, power supply to said receiving means being periodically switched on for a predetermined period in response to the detection of said synchronization signals and in the absence of said predetermined signal sequence, and is also switched off when said predetermined signal sequence is detected.
Claim 2
Dependent Claim
95 words
Paging apparatus comprising: receiving means for receiving signals broadcast over a predetermined radio channel; signal detecting means responsive to said receiving means for detecting synchronization signals and a predetermined signal sequence; power supply means for supplying said receiving means with power; power supply control means for controlling said power supply means, power supply to said receiving means being periodically switched on for a predetermined period in response to the detection of said synchronization signals and in the absence of said predetermined signal sequence, and is also switched off when said predetermined signal sequence is detected.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein said predetermined signal sequence is a specific code indicating an absence of paging codes for a predetermined period of time.
Claim 4
Dependent Claim
33 words
The apparatus of claim 2 wherein said power supply control means further controls said power supply means so that power supply to said receiving means remain switched off for a predetermined time period.
Claim 5
Dependent Claim
21 words
The apparatus of claim 3 wherein the predetermined time period is defined responsive to information included in said predetermined signal sequence.
Claim 6
Dependent Claim
18 words
The apparatus of claim 1 wherein said predetermined signal sequence is a paging code to the paging apparatus.
Claim 7
Dependent Claim
38 words
The apparatus of claim 5 wherein said signal detecting means comprises memory means for storing an identification code of the paging apparatus and comparing means for comparing the signals received by said receiving means with said identification code.
Claim 8
Dependent Claim
37 words
The apparatus of claim 6 wherein said signal detecting means further detects a group designation signal indicative of the possibility that said paging code to the paging apparatus is broadcast before the subsequent synchronization signals are broadcast.
Claim 9
Dependent Claim
30 words
The apparatus of claim 7 wherein said signal detecting means detects said paging code responsive to the detection of both of said synchronization signals and of said group designation signal.
Claim 10
Dependent Claim
31 words
The apparatus of claim 8 further comprises indicating means for indicating reception of said paging code in response to the detection of said paging code for a predetermined number of times.
Claim 11
Dependent Claim
136 words
Paging apparatus comprising: receiving means for receiving signals broadcast over a predetermined radio channel; power supply means for supplying said receiving means with power; signal detecting means responsive to said receiving means for detecting a first predetermined signal sequence including a group designation signal indicative of the possibility that a paging signal to the paging apparatus follows said first predetermined signal sequence within a predetermined time duration and for detecting a second predetermined signal sequence from signals received within said predetermined time duration; time measuring means responsive to the detection of said first predetermined signal sequence for measuring time passage; power supply control means for controlling said power supply means so as to terminate power supply to said receiving means when the time measured by predetermined signal sequence and said second predetermined signal sequence are detected.
Claim 12
Dependent Claim
136 words
Paging apparatus comprising: receiving means for receiving signals broadcast over a predetermined radio channel; power supply means for supplying said receiving means with power; signal detecting means responsive to said receiving means for detecting a first predetermined signal sequence including a group designation signal indicative of the possibility that a paging signal to the paging apparatus follows said first predetermined signal sequence within a predetermined time duration and for detecting a second predetermined signal sequence from signals received within said predetermined time duration; time measuring means responsive to the detection of said first predetermined signal sequence for measuring time passage; power supply control means for controlling said power supply means so as to terminate power supply to said receiving means when the time measured by predetermined signal sequence and said second predetermined signal sequence are detected.
Claim 13
Dependent Claim
101 words
Paging system comprising; a base station including broadcasting means for periodically broadcasting synchronization signals which are followed by a specific code signal in response to absence of paging requests; a paging apparatus including receiving means for receiving signals from said base station, directing means for detecting said synchronization signals and said specific code signal, power supply means for supplying said receiving means with power, and power supply control means for controlling said power supply means so that power supply to said receiving means is turned off for a predetermined time period in response to the detection of said specific code signal.
Claim 14
Dependent Claim
101 words
Paging system comprising; a base station including broadcasting means for periodically broadcasting synchronization signals which are followed by a specific code signal in response to absence of paging requests; a paging apparatus including receiving means for receiving signals from said base station, directing means for detecting said synchronization signals and said specific code signal, power supply means for supplying said receiving means with power, and power supply control means for controlling said power supply means so that power supply to said receiving means is turned off for a predetermined time period in response to the detection of said specific code signal.
Claim 15
Dependent Claim
90 words
A base station apparatus for use in a paging system comprising; first generating means for periodically generating synchronization signals; second generating means responsive to presence of one or more paging requests for generating one or more paging signals corresponding to said paging requests and, responsive to an absence of said paying requests, for generating a specific code signal indicative of no paging signals; broadcasting means coupled to said first generating means and second generating means for broadcasting said synchronization signals followed by the signals generated by said second generating means.
Claim 16
Dependent Claim
90 words
A base station apparatus for use in a paging system comprising; first generating means for periodically generating synchronization signals; second generating means responsive to presence of one or more paging requests for generating one or more paging signals corresponding to said paging requests and, responsive to an absence of said paying requests, for generating a specific code signal indicative of no paging signals; broadcasting means coupled to said first generating means and second generating means for broadcasting said synchronization signals followed by the signals generated by said second generating means.
Claim 17
Dependent Claim
35 words
The apparatus of claim 12 further comprises third generating means for generating idle signals and wherein said broadcasting means broadcasts said idle signals between the signals following said synchronization signals and the subsequent synchronizing signals.
Claim 18
Independent Claim
128 words
A method of paging one or more pagers from a base station in response to one or more paging requests, comprising the steps of: periodically broadcasting synchronization signals which are followed by one or more paging signals in response to the presence of the paging requests and are followed by a specific code signal indicative of no paging signals in response to an absence of paging requests over a predetermined radio channel from said base station; receiving signals broadcast through said predetermined radio channel in synchronization with said synchronization signal received at a pager; terminating receipt of the signals in response to the reception of said specific code signal; and alerting a user of the pages in response to the reception of said paging signal to the pager.
Claim 19
Independent Claim
128 words
A method of paging one or more pagers from a base station in response to one or more paging requests, comprising the steps of: periodically broadcasting synchronization signals which are followed by one or more paging signals in response to the presence of the paging requests and are followed by a specific code signal indicative of no paging signals in response to an absence of paging requests over a predetermined radio channel from said base station; receiving signals broadcast through said predetermined radio channel in synchronization with said synchronization signal received at a pager; terminating receipt of the signals in response to the reception of said specific code signal; and alerting a user of the pages in response to the reception of said paging signal to the pager.
References Cited (Backward Citations)
No citation records indexed.
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