WO1999059347A3 - Method and device for detecting a signal having a certain frequency - Google Patents

Method and device for detecting a signal having a certain frequency Download PDF

Info

Publication number
WO1999059347A3
WO1999059347A3 PCT/FI1999/000395 FI9900395W WO9959347A3 WO 1999059347 A3 WO1999059347 A3 WO 1999059347A3 FI 9900395 W FI9900395 W FI 9900395W WO 9959347 A3 WO9959347 A3 WO 9959347A3
Authority
WO
WIPO (PCT)
Prior art keywords
energy
detecting
signal
certain frequency
certain
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.)
Ceased
Application number
PCT/FI1999/000395
Other languages
French (fr)
Other versions
WO1999059347A2 (en
Inventor
Harri Hurme
Timo M Tamminen
Jari Koskela
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.)
Infinera Oy
Original Assignee
Tellabs Oy
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 Tellabs Oy filed Critical Tellabs Oy
Priority to BR9910393-1A priority Critical patent/BR9910393A/en
Priority to AU40429/99A priority patent/AU753592B2/en
Priority to EP99923627A priority patent/EP1088456B1/en
Priority to DE69930115T priority patent/DE69930115T2/en
Publication of WO1999059347A2 publication Critical patent/WO1999059347A2/en
Publication of WO1999059347A3 publication Critical patent/WO1999059347A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Burglar Alarm Systems (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

An electric device is intended for detecting the presence of a signal having a certain frequency (401) in a line connection (301). It comprises at least three energy-storing components (302, 303, 304, 305, 501, 502, 503, 504) connected in parallel to the line connection, switching means (306) for making a connection selectively from each energy-storing components to a certain reference, means (CLK1, CLK2) for controlling the switching means at a predetermined frequency, and means (307, 308, 309) for measuring a certain quantity comparable to the energy stored from each energy-storing component.
PCT/FI1999/000395 1998-05-11 1999-05-11 Method and device for detecting a signal having a certain frequency Ceased WO1999059347A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR9910393-1A BR9910393A (en) 1998-05-11 1999-05-11 Method and device for detecting a signal having a certain frequency
AU40429/99A AU753592B2 (en) 1998-05-11 1999-05-11 Method and device for detecting a signal having a certain frequency
EP99923627A EP1088456B1 (en) 1998-05-11 1999-05-11 Method and device for detecting a signal having a certain frequency
DE69930115T DE69930115T2 (en) 1998-05-11 1999-05-11 Method and arrangement for detecting a signal having a specific frequency

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI981038A FI112577B (en) 1998-05-11 1998-05-11 Method and apparatus for detecting a signal of a certain frequency
FI981038 1998-05-11

Publications (2)

Publication Number Publication Date
WO1999059347A2 WO1999059347A2 (en) 1999-11-18
WO1999059347A3 true WO1999059347A3 (en) 2000-01-13

Family

ID=8551693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1999/000395 Ceased WO1999059347A2 (en) 1998-05-11 1999-05-11 Method and device for detecting a signal having a certain frequency

Country Status (8)

Country Link
EP (1) EP1088456B1 (en)
AT (1) ATE319264T1 (en)
AU (1) AU753592B2 (en)
BR (1) BR9910393A (en)
DE (1) DE69930115T2 (en)
FI (1) FI112577B (en)
WO (1) WO1999059347A2 (en)
ZA (1) ZA200006486B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127824A (en) * 1977-04-04 1978-11-28 Motorola, Inc. Sampling filter-detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4127824A (en) * 1977-04-04 1978-11-28 Motorola, Inc. Sampling filter-detector

Also Published As

Publication number Publication date
AU4042999A (en) 1999-11-29
ZA200006486B (en) 2002-02-11
AU753592B2 (en) 2002-10-24
WO1999059347A2 (en) 1999-11-18
BR9910393A (en) 2001-01-09
FI112577B (en) 2003-12-15
FI981038L (en) 1999-11-12
DE69930115D1 (en) 2006-04-27
FI981038A0 (en) 1998-05-11
ATE319264T1 (en) 2006-03-15
EP1088456B1 (en) 2006-03-01
DE69930115T2 (en) 2006-08-03
EP1088456A2 (en) 2001-04-04

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