Paging receiver with a capability of receiving or inhibiting message data

• US 4,870,403 A
• Filed: 04/07/1987
• Issued: 09/26/1989
• Est. Priority Date: 04/12/1986
• Status: Expired due to Term

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Mori, Toshihiro, Oyagi, Takashi
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Pudpud, E. O.
• Application Number:
  US07/035,348
• Time in Patent Office: 903 Days
• Field of Search: 340/825.44, 340/825.48, 340/825.27, 340/825.22, 340/825.32, 379/57, 379/63, 358/114, 380/23
• US Class Current: 340/7.41
• CPC Class Codes: G08B 3/1016 using wireless transmission calling systems using transmission by inductive loop H04B5/00
• CPC Class Codes: G08B 3/1091 Group calling
• CPC Class Codes: G08B 5/224 Paging receivers with visible signalling details
• CPC Class Codes: H04W 8/245 from a network towards a terminal
• CPC Class Codes: H04W 88/022 Selective call receivers

Abstract

A paging receiver is capable of receiving message data. The receiver includes a data set and a hold circuit, the output logic of which is inverted in response to the detection of a control signal which follows a paging number individually assigned to that receiver. The receiver is inhibited and excluded from or enabled and restored into a data service which is provided in response to a common or group call number for paging many and unspecified receivers. The inhibit or enable signal is provided by the output of the data set and hold circuit. The data set and hold circuit are powered by a power source which is different from a main power source of the receiver. The receiver determines whether or not the power source associated with the data set and hold circuit is present and, if it is not present, the receipt of the data service based on the common number is inhibited. To eliminate malfunctions due to static electricity, a train of pulses is used as a control signal which follows a paging signal assigned to the individual receiver. The data set and hold circuit responds to means for sensing the pulse train, whereby the receipt of the date service which is based on the common number is inhibited or recovered by an output of the data set and hold circuit.

Claims

1. A paging receiver having a capability of receiving message data on reception of a first calling number which is assigned to said receiver and a second calling number which is adapted for a data service for many and unspecified paging receivers, said paging receiver comprising:

detecting means for detecting a predetermined patten which is contained in message data that is added to said first calling number; and

control means responsive to a control signal from said detecting means for controlling at least a data service which corresponds to said second calling number;

said control means comprising at least a first power source which is different from a main power source of the receiver and a hold circuit for inverting and holding an output logic of said hold circuit in response to said control signal.

2. A paging receiver as claimed in claim 1, wherein the control signal comprises a train of pulses.

3. A paging receiver as claimed in claim 2, wherein the hold circuit comprises a decoder for decoding the train of pulses.

4. A paging receiver as claimed in claim 1, wherein the control means uses as the control signal at least a signal which is representative of presence/absence of the first power source.

5. A paging receiver as claimed in claim 1, wherein the predetermined pattern comprises at least a first pattern for ending the data service which corresponds to the second calling signal, and a second pattern for resuming the data service for a paging receiver which was excluded from said service.

6. A paging receiver as claimed in claim 5, wherein the detecting means delivers the control signal on receipt of said first pattern, the control means comprising means for ending the data service which corresponds to the second calling signal, in response to said control signal.

7. A paging receiver comprising:

means for receiving messages following a first identification number which is assigned to said receiver and a second identification number which is assigned to a plurality of paging receivers inclusive of said receiver;

means for detecting a predetermined pattern which is contained in a message following said first identification number to produce a control signal; and

control means responsive to said control signal for controlling the reception of said second identification number, said control means being energized by a first power source which is separate from a main power source of said receiver.

8. A paging receiver as claimed in claim 7, wherein said control signal comprises a train of pulses.

9. A paging receiver as claimed in claim 8, wherein said control means comprises a decoder for decoding said train of pulses to produce said control signal, and a hold circuit for holding said control signal from said decoder.

10. A paging receiver as claimed in claim 7, wherein said control means comprises means responsive to the removal of said first power source for inhibiting the reception of a message which follows said second identification number.

11. A paging receiver as claimed in claim 7, wherein said predetermined pattern comprises first and second patterns, wherein said detecting means comprises means for detecting said first and second patterns to produce first and second control signals, respectively, and wherein said control means inhibits the reception of said second identification number in response to said first control signal and releases the inhibition of said reception of the message in response to said second control signal.

12. A method of controlling the reception of a message following a common call number which is assigned to a plurality of paging receivers inclusive of a given paging receiver, comprising the steps of:

receiving messages following said common call number and an individual call number which is assigned to said given paging receiver;

detecting a predetermined pattern which is contained in a message following said individual call number to produce a control signal;

holding said control signal irrespective of the removal of a main power source of said given paging receiver; and

responsive to the held control signal, controlling the reception of said common call number.