Patent US5001471A successfully refreshed from Google Patents.
US5001471A
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Paging system employing designated batch information service data message transmission
Assignee: Motorola Solutions Inc
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Filing: 1989-12-26
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Granted: 1991-03-19
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Expires: 2009-12-26
Abstract
Abstract A paging system which provides both individual and information services includes a transmitter for transmitting page call address and data periodically in batches, and a population of battery saver paging receivers for receiving the transmitted call information. Each transmission batch comprises a synchronization code followed by a predetermined plurality of sequential frames. Each subscribing receiver searches for its individual service address in a first designated frame of each batch of a transmission period, and in addition, searches for its information service address in a second designated frame of a designated batch of a transmission period. Individual and information service data messages are obtained from frames subsequent the frame at which their respective address is found.
Inventors
- 👤 Gregory O. Snowden
- 👤 Fernando Gomez
- 👤 Clifford E. Barrett, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:02
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/18; H04W88/185; H04W88/187; H04B; H04B7/00; H04W88/02; H04W88/022; H04W88/025; H04W88/026; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
226 words
A system for selective radio communication of call information from a transmitter to a population of selectively addressable receivers, said transmitter being operative to transmit said information periodically in transmission periods comprising a plurality of batches, each batch commencing with a predetermined synchronization code followed by a predetermined plurality of sequential frames which may include an individual selective call address of a receiver followed by an individual or group data message for said addressed receiver, each receiver being assigned one frame of each transmission batch, and operative, upon recognition of a received synchronization code, to search for its individual selective call address solely in said assigned frame in the batch and, when addressed, to receive the associated data message in subsequent frames, said system comprising: said transmitter for also transmitting an information service call address solely in a common frame following the synchronization code of a single predetermined batch of a transmission period followed by an associated information service data message in subsequent frames; and a subset of information service subscribing receivers of said population of receivers, each said receiver of said subset being programmed to search, upon recognition of said single predetermined batch, for said information service call address solely in said common frame and, when addressed by said information service, to receive the associated information service data message in frames subsequent said common frame.
Claim 2
Independent Claim
226 words
A system for selective radio communication of call information from a transmitter to a population of selectively addressable receivers, said transmitter being operative to transmit said information periodically in transmission periods comprising a plurality of batches, each batch commencing with a predetermined synchronization code followed by a predetermined plurality of sequential frames which may include an individual selective call address of a receiver followed by an individual or group data message for said addressed receiver, each receiver being assigned one frame of each transmission batch, and operative, upon recognition of a received synchronization code, to search for its individual selective call address solely in said assigned frame in the batch and, when addressed, to receive the associated data message in subsequent frames, said system comprising: said transmitter for also transmitting an information service call address solely in a common frame following the synchronization code of a single predetermined batch of a transmission period followed by an associated information service data message in subsequent frames; and a subset of information service subscribing receivers of said population of receivers, each said receiver of said subset being programmed to search, upon recognition of said single predetermined batch, for said information service call address solely in said common frame and, when addressed by said information service, to receive the associated information service data message in frames subsequent said common frame.
Claim 3
Dependent Claim
31 words
The system according to claim 1 wherein the transmitter is operative to transmit the information service call address in a common frame immediately following the synchronization code of the predetermined batch.
Claim 4
Dependent Claim
23 words
The system according to claim 1 wherein the predetermined batch is the first batch of the plurality of batches of a transmission period.
Claim 5
Dependent Claim
9 words
The system according to claim 1 using POCSAG coding.
Claim 6
Dependent Claim
126 words
A system according to claim 1 wherein: the transmitter is operative to transmit a unique information service call address for each of a plurality of information services, each information service call address transmitted solely in a common frame of a single corresponding predetermined batch of a transmission period, the associated information service data message being transmitted in frames subsequent the corresponding common frame; and a receiver of a subset of receivers of the population subscribing to the plurality of information services is programmed to search, upon recognition of the information service batch, for the corresponding information service call address in said common frame thereof and, when addressed by said corresponding information service, to receive the associated information service data message in frames subsequent said common frame.
Claim 7
Dependent Claim
32 words
The system according to claim 5 wherein the transmitter is operative to transmit an information service call address in a common frame immediately following the synchronization code of its corresponding predetermined batch.
Claim 8
Dependent Claim
130 words
A transmitter for use in a system for selective radio communication of call information to a population of selectively addressable receivers, said transmitter being operative to transmit said information periodically in transmission periods comprising a plurality of batches, each batch commencing with a predetermined synchronization code followed by a predetermined plurality of sequential frames which may include an individual selective call address of a receiver followed by an individual or group data message for said addressed receiver, said transmitter comprising: means for transmitting an information service call address solely in a common frame following the synchronization code word of a single predetermined batch of a transmission period; and means for transmitting an information service data message sequential to the corresponding information service call address in frames subsequent said common frame.
Claim 9
Dependent Claim
130 words
A transmitter for use in a system for selective radio communication of call information to a population of selectively addressable receivers, said transmitter being operative to transmit said information periodically in transmission periods comprising a plurality of batches, each batch commencing with a predetermined synchronization code followed by a predetermined plurality of sequential frames which may include an individual selective call address of a receiver followed by an individual or group data message for said addressed receiver, said transmitter comprising: means for transmitting an information service call address solely in a common frame following the synchronization code word of a single predetermined batch of a transmission period; and means for transmitting an information service data message sequential to the corresponding information service call address in frames subsequent said common frame.
Claim 10
Dependent Claim
27 words
The transmitter according to claim 7 operative to transmit the information service call address in a common frame immediately following the synchronization code of the predetermined batch.
Claim 11
Dependent Claim
23 words
The transmitter according to claim 7 wherein the predetermined batch is the first batch of the plurality of batches of a transmission period.
Claim 12
Dependent Claim
9 words
The transmitter according to claim 7 using POCSAG coding.
Claim 13
Dependent Claim
64 words
The transmitter according to claim 7 wherein: the transmitter is further operative to transmit a unique information service call address for each of a plurality of information services, each information service call address transmitted solely in a common frame of a single corresponding predetermined batch of a transmission period, the associated information service data message being transmitted in frames subsequent the corresponding common frame.
Claim 14
Dependent Claim
231 words
A receiver for use in a system for selective radio communication of call information from a transmitter to a population of selectively addressable receivers, said transmitter being operative to transmit said information periodically in transmission periods comprising a plurality of batches each commencing with a predetermined synchronization code followed by a predetermined plurality of sequential frames which may include an individual selective call address of a receiver followed by an individual or group data message for said addressed receiver, said transmitter further operative to transmit an information service call address solely in a common frame following the synchronization code of a single predetermined batch of a transmission period followed by an associated information service data message in subsequent frames, said receiver being assigned one frame of each transmission batch, and operative, upon recognition of a received synchronization code, to search for its individual selective call address solely in said assigned frame in each batch and, when addressed, to receive the associated data message in subsequent frames, said receiver comprising: first means programmably set to enable said receiver to respond to the single predetermined batch of a transmission period to search for the information service call address solely in said common frame thereof; and second means responsive to finding the information service call address in said common frame to receive the associated information service data message in frames subsequent said common frame.
Claim 15
Dependent Claim
231 words
A receiver for use in a system for selective radio communication of call information from a transmitter to a population of selectively addressable receivers, said transmitter being operative to transmit said information periodically in transmission periods comprising a plurality of batches each commencing with a predetermined synchronization code followed by a predetermined plurality of sequential frames which may include an individual selective call address of a receiver followed by an individual or group data message for said addressed receiver, said transmitter further operative to transmit an information service call address solely in a common frame following the synchronization code of a single predetermined batch of a transmission period followed by an associated information service data message in subsequent frames, said receiver being assigned one frame of each transmission batch, and operative, upon recognition of a received synchronization code, to search for its individual selective call address solely in said assigned frame in each batch and, when addressed, to receive the associated data message in subsequent frames, said receiver comprising: first means programmably set to enable said receiver to respond to the single predetermined batch of a transmission period to search for the information service call address solely in said common frame thereof; and second means responsive to finding the information service call address in said common frame to receive the associated information service data message in frames subsequent said common frame.
Claim 16
Dependent Claim
35 words
The receiver according to claim 12 wherein said first means is programmably set to search for the information service call address in a common frame immediately following the synchronization code word of the predetermined batch.
Claim 17
Dependent Claim
28 words
The receiver according to claim 12 wherein the first means is programmably set to respond to the first batch of the plurality of batches of a transmission period.
Claim 18
Dependent Claim
92 words
The receiver according to claim 12 wherein the transmitter is operative to transmit a unique information service call address for each of a plurality of information services, each information service call address transmitted solely in a common frame of a single corresponding predetermined batch of a transmission period, the associated information service data message being transmitted in frames subsequent the corresponding common frame; and wherein said first means is programmably set to search, upon recognition of the information service batch, for the corresponding information service call address in said common frame thereof.
Claim 19
Dependent Claim
34 words
The receiver according to claim 15 wherein said first means is programmably set to search for the information service call address in a common frame immediately following the synchronization code of the predetermined batch.
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) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |