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EP0422920A3 - Sensitivity indicator for a radio receiver - Google Patents

Sensitivity indicator for a radio receiver Download PDF

Info

Publication number
EP0422920A3
EP0422920A3 EP19900311108 EP90311108A EP0422920A3 EP 0422920 A3 EP0422920 A3 EP 0422920A3 EP 19900311108 EP19900311108 EP 19900311108 EP 90311108 A EP90311108 A EP 90311108A EP 0422920 A3 EP0422920 A3 EP 0422920A3
Authority
EP
European Patent Office
Prior art keywords
radio receiver
sensitivity indicator
sensitivity
indicator
indication
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.)
Granted
Application number
EP19900311108
Other versions
EP0422920A2 (en
EP0422920B1 (en
Inventor
Robert John Schwendeman
William John Burke
Arthur Peter Lafond, Jr.
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 EP0422920A2 publication Critical patent/EP0422920A2/en
Publication of EP0422920A3 publication Critical patent/EP0422920A3/en
Application granted granted Critical
Publication of EP0422920B1 publication Critical patent/EP0422920B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B3/1066—Paging receivers with audible signalling details with other provisions not elsewhere provided for, e.g. turn-off protection

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

This invention provides an indication of quality of signal reception in a selection call system such as a paging system, by comparing received data with preprogrammed data and indicating the degree of discrepancy therebetween.
EP90311108A 1989-10-10 1990-10-10 Sensitivity indicator for a radio receiver Expired - Lifetime EP0422920B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41955289A 1989-10-10 1989-10-10
US419552 1989-10-10

Publications (3)

Publication Number Publication Date
EP0422920A2 EP0422920A2 (en) 1991-04-17
EP0422920A3 true EP0422920A3 (en) 1992-04-29
EP0422920B1 EP0422920B1 (en) 1995-08-23

Family

ID=23662743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90311108A Expired - Lifetime EP0422920B1 (en) 1989-10-10 1990-10-10 Sensitivity indicator for a radio receiver

Country Status (4)

Country Link
EP (1) EP0422920B1 (en)
AT (1) ATE126949T1 (en)
DE (1) DE69021820T2 (en)
HK (1) HK1000481A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973242A (en) * 1975-02-27 1976-08-03 Gte Sylvania Incorporated Digital receiver
US4086537A (en) * 1975-01-24 1978-04-25 Nippon Telegraph & Telephone Public Corporation Time division multiplex communication receiving apparatus
US4649538A (en) * 1984-09-28 1987-03-10 Motorola, Inc. Radio paging device with improved test modes
WO1989004527A1 (en) * 1987-10-30 1989-05-18 Fernandez Emilio A Improved paging device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086537A (en) * 1975-01-24 1978-04-25 Nippon Telegraph & Telephone Public Corporation Time division multiplex communication receiving apparatus
US3973242A (en) * 1975-02-27 1976-08-03 Gte Sylvania Incorporated Digital receiver
US4649538A (en) * 1984-09-28 1987-03-10 Motorola, Inc. Radio paging device with improved test modes
WO1989004527A1 (en) * 1987-10-30 1989-05-18 Fernandez Emilio A Improved paging device

Also Published As

Publication number Publication date
DE69021820T2 (en) 1996-04-18
EP0422920A2 (en) 1991-04-17
EP0422920B1 (en) 1995-08-23
HK1000481A1 (en) 1998-03-27
ATE126949T1 (en) 1995-09-15
DE69021820D1 (en) 1995-09-28

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