GB1396600A - Selective signalling apparatus with storage of call signals - Google Patents

Selective signalling apparatus with storage of call signals

Info

Publication number
GB1396600A
GB1396600A GB5491472A GB5491472A GB1396600A GB 1396600 A GB1396600 A GB 1396600A GB 5491472 A GB5491472 A GB 5491472A GB 5491472 A GB5491472 A GB 5491472A GB 1396600 A GB1396600 A GB 1396600A
Authority
GB
United Kingdom
Prior art keywords
gate
input
tone
output
inverter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5491472A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of GB1396600A publication Critical patent/GB1396600A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • G08B3/1025—Paging receivers with audible signalling details
    • G08B3/105—Paging receivers with audible signalling details with call or message storage means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
GB5491472A 1971-12-06 1972-11-28 Selective signalling apparatus with storage of call signals Expired GB1396600A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20507171A 1971-12-06 1971-12-06

Publications (1)

Publication Number Publication Date
GB1396600A true GB1396600A (en) 1975-06-04

Family

ID=22760669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5491472A Expired GB1396600A (en) 1971-12-06 1972-11-28 Selective signalling apparatus with storage of call signals

Country Status (7)

Country Link
US (1) US3742481A (es)
JP (1) JPS5118762B2 (es)
AR (1) AR195575A1 (es)
CA (1) CA1002117A (es)
DE (1) DE2259767B2 (es)
FR (1) FR2162499B1 (es)
GB (1) GB1396600A (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010460A (en) * 1974-12-12 1977-03-01 Bell & Howell Company Alerting system with memory
US4010461A (en) * 1975-01-17 1977-03-01 Bell & Howell Company Alerting system with dual-address memory
US3992698A (en) * 1975-04-15 1976-11-16 Westinghouse Electric Corporation Fail-safe speed command signal decoder
US4145684A (en) * 1976-05-28 1979-03-20 Bell & Howell Company Alerting system with dual-address memory
US4087793A (en) * 1976-10-28 1978-05-02 Motorola, Inc. Digital electronic control and switching arrangement
US4072903A (en) * 1976-12-10 1978-02-07 General Electric Company Storage circuit for paging radio receivers
JPS57101996A (en) * 1980-12-16 1982-06-24 Nippon Electric Co Call indication circuit
US4419668A (en) * 1981-09-25 1983-12-06 Motorola, Inc. Combined tone only and tone voice multiple alert pager
US4644351A (en) * 1984-05-08 1987-02-17 Motorola, Inc. Two way personal message system with extended coverage
CN1042287C (zh) * 1992-10-23 1999-02-24 日本电气株式会社 无线寻呼接收机
JP2665204B2 (ja) * 1995-06-20 1997-10-22 静岡日本電気株式会社 無線選択呼出受信機

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3510864A (en) * 1967-08-17 1970-05-05 Ramsey H Mcdonald Paging encoder

Also Published As

Publication number Publication date
AU4946972A (en) 1974-05-30
US3742481A (en) 1973-06-26
AR195575A1 (es) 1973-10-23
JPS4866305A (es) 1973-09-11
FR2162499A1 (es) 1973-07-20
DE2259767B2 (de) 1973-10-04
CA1002117A (en) 1976-12-21
JPS5118762B2 (es) 1976-06-12
DE2259767A1 (de) 1973-06-20
FR2162499B1 (es) 1976-04-23

Similar Documents

Publication Publication Date Title
US4479125A (en) Radio paging receiver capable of muting battery saving function
GB1396600A (en) Selective signalling apparatus with storage of call signals
US3628153A (en) Receiving device for control information
GB1321050A (en) Communication receiver
US4010460A (en) Alerting system with memory
US3039081A (en) Frequency selective signalling system
EP0090042B1 (en) Decoder for transmitted message deactivation code
GB1488896A (en) Variable amplitude timed alarm system
US2882390A (en) Radio receiver alarm
US4068177A (en) Electronic control circuit
GB1479176A (en) Switchable frequency tone detector
GB1354854A (en) Integrated circuit decoder responsive to two sequential tones with group call provisions
US3755744A (en) Receiving device for automatically demuting and remuting by two control signals sequentially transmitted from transmitter
US4072903A (en) Storage circuit for paging radio receivers
US3614321A (en) Remote functional control circuit
US3283315A (en) Signal receiving and indicating system having receiver controlled indicator operatedintermittently during signal reception to prevent regeneration
US3248722A (en) Frequency keyed transistor oscillator signal receiver
US3153197A (en) Automatic control and alerting system
ES379686A1 (es) Un circuito de r. f. con control automatico de ganancia.
US3249874A (en) Alarm-radio system
JP2638005B2 (ja) 選択呼出受信装置
JPH01140818A (ja) 目覚し機能付ラジオ受信機
US3234468A (en) Conelrad warning device
JPH01256230A (ja) 交通情報局選局装置を備えた受信装置
US3246246A (en) Conelrad warning device with motor driven switch for operating capacitor charging means

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee