EP0360216A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Selective paging system and paging receiver therefor
Assignee: Casio Computer Co Ltd
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Filing: 1989-09-19
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Granted: —
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Expires: 2009-09-19
Abstract
Abstract Each pager includes a receiver (23) for receiving a transmission signal including an address and a message from a base station, a frame register (49) for holding the number of a transmission frame assigned to the pager, a common frame register (50) for holding the number (8) of a transmission frame commonly used by a plurality of pagers assigned with a transmission frame different from the transmission frame assigned to the pager, address registers (53 to 56) for holding a specific address number of the pager and an address number common to a plurality of pagers and a controller. The a controller (46) switches on the receiver in a predetermined period including a plurality of frames stored in the frame register, comparators (57 - 62) for comparing the address of the signal received by the receiver with the addresses stored in the address registers. A message decoder (64) fetches a message when the comparator detects a coincidence.
Inventors
- 👤 Kazuhiro Pat. Dep. Dev.Div. Hamura R&D Shimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 11:54
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/025; H04W88/026; G; G08; G08B; G08B3/00; G08B3/10; G08B3/1008; G08B3/1016; G08B3/1091; G08B5/00; G08B5/22; G08B5/222; G08B5/223; G08B5/224; G08B5/227; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
194 words
A paging system which comprises: a base station for transmitting a calling signal and a message signal; and a plurality of paging receivers (Fig. 3), each of said paging receivers receiving a calling signal from said base station, receiving a message signal next to a calling signal assigned to the paging receiver, and displaying a received message, said paging receivers being divided into groups, each of the groups being assigned with a transmission frame; wherein said base station transmits an individual calling signal for individually calling a paging receiver by using one of specific transmission frames (1 - 7) assigned to a group to which said paging receiver belong, and transmitting a simultaneous calling signal for simultaneously calling at least two of paging receivers which belong to at least two of the groups by using a predetermined transmission frame (8) which is one of the specific transmission frames (1 - 7) or different from said specific frames, and each of said paging receivers (Fig. 3) receives the calling signal for a predetermined period including a frame (2) of said specific frames (1 - 7) assigned to said paging receiver and said predetermined frame (8).
Claim 2
Dependent Claim
194 words
A paging system which comprises: a base station for transmitting a calling signal and a message signal; and a plurality of paging receivers (Fig. 3), each of said paging receivers receiving a calling signal from said base station, receiving a message signal next to a calling signal assigned to the paging receiver, and displaying a received message, said paging receivers being divided into groups, each of the groups being assigned with a transmission frame; wherein said base station transmits an individual calling signal for individually calling a paging receiver by using one of specific transmission frames (1 - 7) assigned to a group to which said paging receiver belong, and transmitting a simultaneous calling signal for simultaneously calling at least two of paging receivers which belong to at least two of the groups by using a predetermined transmission frame (8) which is one of the specific transmission frames (1 - 7) or different from said specific frames, and each of said paging receivers (Fig. 3) receives the calling signal for a predetermined period including a frame (2) of said specific frames (1 - 7) assigned to said paging receiver and said predetermined frame (8).
Claim 3
Dependent Claim
25 words
A system according to claim 1, characterized in that said predetermined transmission frame (8) is a frame (1, 8) adjacent to a sync code (SC).
Claim 4
Dependent Claim
61 words
A system according to claim 1, characterized in that said system is a paging system using a POCSAG code, and said specific frames, which are used for the individual calling, are seven frames of first to eighth frames of the POCSAG code, and said predetermined frame, which is used for the simultaneous calling, is a frame other than said seven frames.
Claim 5
Dependent Claim
61 words
A system according to claim 1, characterized in that the individual calling signal includes a second individual calling signal for calling at least two paging receivers assigned with the same transmission frame and first individual calling signal for calling one paging receiver, and the simultaneous calling signal is used for calling a plurality of paging receivers assigned with different transmission frames.
Claim 6
Dependent Claim
106 words
A system according to claim 4, characterized in that said base station (Fig. 2) transmits the second individual calling signal for calling at least two paging receiver of a certain group and the first individual calling signal for calling one paging receiver belonging to the group by using frames of the same number, and each of said paging receivers (Fig. 3) receives the transmission signal in a period including a frame of said specific frames assigned to the paging receiver, to receive the individual calling signal, and receives the transmission signal in a period including said other frame in order to receive the simultaneous calling signal.
Claim 7
Dependent Claim
157 words
A system according to claim 1, characterized in that a transmission format has N frames, said plurality of paging receivers are divided into n groups, each of said N frames (N > n) is assigned to paging receivers of respective group, in order to call at least one paging receiver belonging to a certain group, said base station transmits the individual calling signal for said at least one paging receiver in a frame assigned to the group to which said paging receiver belongs, and in order to call at least two paging receivers belonging to a plurality of groups, said base station transmits a calling signal in the predetermined frame other than said n frames of said N frames, and each of said paging receivers is set in a reception state in a predetermined period including a frame assigned to a group to which said paging receiver belongs and the predetermined frame other than said n frames.
Claim 8
Dependent Claim
58 words
A system according to claim 1, characterized in that said system is a paging system using a POCSAG code, and said specific frames, which are used for the individual calling, are first to eighth frames of the POCSAG code, and said predetermined frame, which is used for the simultaneous calling, is one of the first to eighth frames.
Claim 9
Dependent Claim
150 words
A system according to claim 1, characterized in that a transmission format has N frames, said plurality of paging receivers are divided into N groups, each of said N frames (N > n) is assigned to paging receivers of respective group, in order to call at least one paging receiver belonging to a certain group, said base station transmits the individual calling signal for said at least one paging receiver in a frame assigned to the group to which said paging receiver belongs, and in order to call at least two paging receivers belonging to a plurality of groups, said base station transmits a calling signal in the predetermined frame which is one of said N frames, and each of said paging receivers is set in a reception state in a predetermined period including a frame assigned to a group to which said paging receiver belongs and the predetermined frame.
Claim 10
Dependent Claim
26 words
A system according to claim 1, characterized in that the simultaneous calling signal is a signal for transmitting contract information to said plurality of paging receivers.
Claim 11
Dependent Claim
119 words
A system according to claim 1, characterized in that each of said paging receivers includes memory means (49) for storing the number of a frame assigned thereto in order to receive the individual calling signal and memory means for storing at least one address (52) assigned thereto in order to receive the individual calling signal, and each of said paging receivers further includes memory means (50) for storing the number of a frame to which the simultaneous calling signal is transmitted in order to receive the simultaneous calling signal and memory means (53 - 56) for storing an address commonly assigned to paging receivers allowed to receive the simultaneous calling signal in order to receive the simultaneous calling signal.
Claim 12
Dependent Claim
41 words
A system according to claim 1, characterized in that when each of said paging receivers determines that the calling signal calls said paging receiver, said paging receiver is continuously set in a reception state in order to receive a message signal.
Claim 13
Independent Claim
154 words
A method of paging communication for calling at least one of subscribed paging receivers in accordance with a calling number input by said at least one paging receiver by a caller, and for transmitting a message to said at least one paging receiver, said method comprising the steps of: storing specific calling numbers and other calling numbers into a memory, said specific calling numbers being assigned with different transmission frames, and said other calling numbers are assigned with the same transmission frame; comparing the calling number input by the caller with the specific and other calling numbers stored in said memory; generating a calling number for transmission in response to a calling number which is found to coincide each other in comparing step; selecting one of said transmission frames for transmitting a generated calling number for transmission; and transmitting the calling number for transmission with the selected transmission frame to the subscribed paging receivers.
Claim 14
Independent Claim
154 words
A method of paging communication for calling at least one of subscribed paging receivers in accordance with a calling number input by said at least one paging receiver by a caller, and for transmitting a message to said at least one paging receiver, said method comprising the steps of: storing specific calling numbers and other calling numbers into a memory, said specific calling numbers being assigned with different transmission frames, and said other calling numbers are assigned with the same transmission frame; comparing the calling number input by the caller with the specific and other calling numbers stored in said memory; generating a calling number for transmission in response to a calling number which is found to coincide each other in comparing step; selecting one of said transmission frames for transmitting a generated calling number for transmission; and transmitting the calling number for transmission with the selected transmission frame to the subscribed paging receivers.
Claim 15
Dependent Claim
21 words
A method according to claim 12, characterized in that said specific frame is a frame adjacent to a sync codeword (SC).
Claim 16
Dependent Claim
78 words
A method according to claim 12, characterized in that the specific calling numbers includes a group calling numbers for calling a plurality of paging receivers belonging to a certain group of paging receivers assigned with the same frame and an individual calling numbers for calling one paging receiver, the group calling number for a certain group and the individual calling signal for a paging receiver belonging to the group being transmitted by using frames of the same number.
Claim 17
Dependent Claim
23 words
A method according to claim 12, further comprising the step of transmitting a message signal including a message next to the calling signal.
Claim 18
Dependent Claim
132 words
A pager comprising: receiving means (23) for receiving a transmission signal including an address and a message; frame register means (49, 50) for storing numbers of a plurality of frames of a transmission format; address holding means (51 - 56) for holding at least one address for each frame number stored in said frame register means (49, 50); control means (46) for switching on said receiving means (23) in a predetermined period including said plurality of frames stored in said frame register means (49, 50); comparing means (57 - 62) for comparing an address of the signal received by said receiving means (23) with the addresses stored in said address holding means (51 - 56); and means (64) for fetching the message when said comparing means (57 - 62) detects a coincidence.
Claim 19
Dependent Claim
132 words
A pager comprising: receiving means (23) for receiving a transmission signal including an address and a message; frame register means (49, 50) for storing numbers of a plurality of frames of a transmission format; address holding means (51 - 56) for holding at least one address for each frame number stored in said frame register means (49, 50); control means (46) for switching on said receiving means (23) in a predetermined period including said plurality of frames stored in said frame register means (49, 50); comparing means (57 - 62) for comparing an address of the signal received by said receiving means (23) with the addresses stored in said address holding means (51 - 56); and means (64) for fetching the message when said comparing means (57 - 62) detects a coincidence.
Claim 20
Dependent Claim
114 words
A pager according to claim 16, characterized in that said frame number memory means includes holding means (49) for holding the number of a transmission frame assigned to said pager, and common frame holding means (50) for holding the number (8) of a transmission frame commonly used by a plurality of pagers assigned with a transmission frame different from the transmission frame assigned to said pager and by said pager, and said address holding means includes holding means (57) for holding a specific address number of said pager, and holding means (58 - 62) for holding an address number common to several pagers in order to receive a message common to said several pagers.
Claim 21
Dependent Claim
78 words
A pager according to claim 16, characterized in that said common address number holding means includes holding means (52) for holding an address commonly assigned to several pagers of a plurality of pagers assigned with the same frame as that assigned to said pager, and holding means (53 - 56) for holding an address commonly assigned to a plurality of pagers including a plurality of pagers assigned with a frame different from the frame assigned to said pager.
Claim 22
Dependent Claim
141 words
A pager comprising: receiving means (23) for receiving a transmission signal including an address and a message; a plurality of frame register means (49, 50), each of which storing number of frame of a transmission format; a plurality of address holding means (51 - 56) for holding address at least one of said address holding mean being provided to each of said frame register means (49, 50); control means (46) for switching on said receiving means (23) in a predetermined period including said plurality of frames stored in said frame register means (49, 50); comparing means (57 - 62) for comparing an address of the signal received by said receiving means (23) with the addresses stored in said address holding means (51 - 56); and means (64) for fetching the message when said comparing means (57 - 62) detects a coincidence.
Claim 23
Dependent Claim
141 words
A pager comprising: receiving means (23) for receiving a transmission signal including an address and a message; a plurality of frame register means (49, 50), each of which storing number of frame of a transmission format; a plurality of address holding means (51 - 56) for holding address at least one of said address holding mean being provided to each of said frame register means (49, 50); control means (46) for switching on said receiving means (23) in a predetermined period including said plurality of frames stored in said frame register means (49, 50); comparing means (57 - 62) for comparing an address of the signal received by said receiving means (23) with the addresses stored in said address holding means (51 - 56); and means (64) for fetching the message when said comparing means (57 - 62) detects a coincidence.
Claim 24
Dependent Claim
114 words
A pager according to claim 19, characterized in that said frame number memory means includes holding means (49) for holding the number of a transmission frame assigned to said pager, and common frame holding means (50) for holding the number (8) of a transmission frame commonly used by a plurality of pagers assigned with a transmission frame different from the transmission frame assigned to said pager and by said pager, and said address holding means includes holding means (57) for holding a specific address number of said pager, and holding means (58 - 62) for holding an address number common to several pagers in order to receive a message common to said several pagers.
References Cited (Backward Citations)
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