CH654169GA3 - - Google Patents

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Publication number
CH654169GA3
CH654169GA3 CH203084A CH203084A CH654169GA3 CH 654169G A3 CH654169G A3 CH 654169GA3 CH 203084 A CH203084 A CH 203084A CH 203084 A CH203084 A CH 203084A CH 654169G A3 CH654169G A3 CH 654169GA3
Authority
CH
Switzerland
Prior art keywords
transducer
frame
connects
switching circuit
magnetic signal
Prior art date
Application number
CH203084A
Other languages
French (fr)
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 filed Critical
Priority to CH203084A priority Critical patent/CH654169GA3/fr
Priority to US06/714,285 priority patent/US4663624A/en
Priority to EP85104910A priority patent/EP0161545B1/en
Priority to DE8585104910T priority patent/DE3564353D1/en
Priority to JP60087666A priority patent/JPS60235541A/en
Publication of CH654169GA3 publication Critical patent/CH654169GA3/fr
Priority to SG64391A priority patent/SG64391G/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/04—Input or output devices integrated in time-pieces using radio waves
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems, e.g. audible personal calling systems
    • G08B3/10—Audible signalling systems, e.g. audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Clocks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

A pager is described for use in an electronic watch. The pager comprises a frame (1) for picking up a magnetic signal and a piezoelectric transducer (11) having a static capacitance on its terminals, for producing a sound. 11 To improve sensitivity of reception, a switching circuit (15) connects the transducer (11) in parallel with the frame (1) to tune it by means of the static capacitance to the frequency of the magnetic signal carrier wave. To increase the performance of the transducer (11 ) when it operates as a sound transmitter, the switching circuit (15) connects the frame (1) in series with the transducer (11).
CH203084A 1984-04-25 1984-04-25 CH654169GA3 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CH203084A CH654169GA3 (en) 1984-04-25 1984-04-25
US06/714,285 US4663624A (en) 1984-04-25 1985-03-21 Pager having receiving frame tuned by transducer
EP85104910A EP0161545B1 (en) 1984-04-25 1985-04-23 Apparatus for locating persons for an electronic timepiece
DE8585104910T DE3564353D1 (en) 1984-04-25 1985-04-23 Apparatus for locating persons for an electronic timepiece
JP60087666A JPS60235541A (en) 1984-04-25 1985-04-25 Paging device
SG64391A SG64391G (en) 1984-04-25 1991-08-06 Apparatus for locating persons for an eletronic timepiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH203084A CH654169GA3 (en) 1984-04-25 1984-04-25

Publications (1)

Publication Number Publication Date
CH654169GA3 true CH654169GA3 (en) 1986-02-14

Family

ID=4224281

Family Applications (1)

Application Number Title Priority Date Filing Date
CH203084A CH654169GA3 (en) 1984-04-25 1984-04-25

Country Status (6)

Country Link
US (1) US4663624A (en)
EP (1) EP0161545B1 (en)
JP (1) JPS60235541A (en)
CH (1) CH654169GA3 (en)
DE (1) DE3564353D1 (en)
SG (1) SG64391G (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5159713A (en) * 1985-11-27 1992-10-27 Seiko Corp. Watch pager and wrist antenna
JPS6378090A (en) * 1986-09-17 1988-04-08 ア−ル・アウデマルズ　ソシエテ　アノニム electronic identification device
GB2201266A (en) * 1986-12-23 1988-08-24 Upperpace Limited A radio paging watch
US5052049A (en) * 1987-10-20 1991-09-24 Telefind Corporation Paging receiver with continuously tunable antenna
US5012235A (en) * 1987-10-20 1991-04-30 Telefind Corporation Paging receiver with continuously tunable antenna and RF amplifier
US4845485A (en) * 1987-12-29 1989-07-04 Motorola, Inc. Combined radio pager/timepiece apparatus with receiver desensitization protection
US4998093A (en) * 1988-12-16 1991-03-05 Benoit John J Portable personal electronic perimeter alarm
JPH05122137A (en) * 1991-10-30 1993-05-18 Aiphone Co Ltd Mobile radio system with positional information sending function
JPH0666962A (en) * 1992-07-02 1994-03-11 Seiko Instr Inc Electronic watch with pager
US5572488A (en) * 1993-12-17 1996-11-05 Seiko Communications Holding N.V. Wristwatch paging receiver having analog message display
DE50106265D1 (en) * 2001-12-01 2005-06-23 Siemens Building Tech Ag Acoustic alarm device for a hazard alarm
US7817500B2 (en) * 2006-03-10 2010-10-19 Idt Technology Limited Shock-activated switch device
JP5925911B2 (en) 2011-12-13 2016-05-25 ノースロップ グラマン ガイダンス アンド エレクトロニクス カンパニー インコーポレイテッド System and method for adaptive sample quantization

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937004A (en) * 1973-05-28 1976-02-10 Citizen Watch Co., Ltd. Portable miniature type information treating device
US4170769A (en) * 1978-09-06 1979-10-09 Gte Sylvania Incorporated Audio-detector alarm
DE2918531A1 (en) * 1979-05-08 1980-11-13 Provera Gmbh Electronic alarm wrist watch - has change over switch between timing circuit and receiver driven by aerial
JPS58100772A (en) * 1981-12-10 1983-06-15 Seikosha Co Ltd Piezoelectric buzzer driver of timepiece

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH1546470A4 (en) * 1970-10-20 1972-09-15
JPS55147381A (en) * 1979-05-04 1980-11-17 Seiko Instr & Electronics Ltd Detector for electronic watch
DE2941388A1 (en) * 1979-10-12 1981-04-23 Philips Patentverwaltung Gmbh, 2000 Hamburg CIRCUIT ARRANGEMENT FOR AN ELECTRONIC CLOCK WITH ALARM DEVICE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937004A (en) * 1973-05-28 1976-02-10 Citizen Watch Co., Ltd. Portable miniature type information treating device
US4170769A (en) * 1978-09-06 1979-10-09 Gte Sylvania Incorporated Audio-detector alarm
DE2918531A1 (en) * 1979-05-08 1980-11-13 Provera Gmbh Electronic alarm wrist watch - has change over switch between timing circuit and receiver driven by aerial
JPS58100772A (en) * 1981-12-10 1983-06-15 Seikosha Co Ltd Piezoelectric buzzer driver of timepiece

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 206 (P-222)(1351), 10 septembre 1983, & JP - A - 58 100 772 (SEIKOUSHIYA K.K.)(15-06-1983). *

Also Published As

Publication number Publication date
JPS60235541A (en) 1985-11-22
EP0161545A1 (en) 1985-11-21
US4663624A (en) 1987-05-05
SG64391G (en) 1991-09-13
DE3564353D1 (en) 1988-09-15
JPH039659B2 (en) 1991-02-08
EP0161545B1 (en) 1988-08-10

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