FR2603443A1 - METHOD FOR RECOGNIZING TELEPHONE TONES, DEVICE IMPLEMENTING THE METHOD, TELEPHONE DEVICE AND ANSWERING MACHINE PROVIDED WITH SUCH A DEVICE - Google Patents

METHOD FOR RECOGNIZING TELEPHONE TONES, DEVICE IMPLEMENTING THE METHOD, TELEPHONE DEVICE AND ANSWERING MACHINE PROVIDED WITH SUCH A DEVICE

Info

Publication number
FR2603443A1
FR2603443A1 FR8612267A FR8612267A FR2603443A1 FR 2603443 A1 FR2603443 A1 FR 2603443A1 FR 8612267 A FR8612267 A FR 8612267A FR 8612267 A FR8612267 A FR 8612267A FR 2603443 A1 FR2603443 A1 FR 2603443A1
Authority
FR
France
Prior art keywords
telephone
duration
tone
recognizing
machine provided
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.)
Pending
Application number
FR8612267A
Other languages
French (fr)
Inventor
Olivier Wuillemin
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.)
APCEES
AUGE GERALDE
FERBOS ANNE
Original Assignee
APCEES
AUGE GERALDE
FERBOS ANNE
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 APCEES, AUGE GERALDE, FERBOS ANNE filed Critical APCEES
Priority to FR8612267A priority Critical patent/FR2603443A1/en
Priority to PCT/FR1987/000338 priority patent/WO1988001819A1/en
Publication of FR2603443A1 publication Critical patent/FR2603443A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

Method and device for recognizing at least one tone emitted on a telephone network, each tone period comprising a sound phase wherein a 440 Hz signal is emitted, and a silence phase. In general according to this method, the presence of a periodical signal having the appearance of a tone, the duration of the period of said periodical signal is measured, the total measured duration is compared with at least one stored reference duration. When the result of the comparison is positive, the periodical signal is recognized as being the tone whose period duration corresponds to said reference duration. Application to telephone deviator and responders.
FR8612267A 1986-08-28 1986-08-28 METHOD FOR RECOGNIZING TELEPHONE TONES, DEVICE IMPLEMENTING THE METHOD, TELEPHONE DEVICE AND ANSWERING MACHINE PROVIDED WITH SUCH A DEVICE Pending FR2603443A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8612267A FR2603443A1 (en) 1986-08-28 1986-08-28 METHOD FOR RECOGNIZING TELEPHONE TONES, DEVICE IMPLEMENTING THE METHOD, TELEPHONE DEVICE AND ANSWERING MACHINE PROVIDED WITH SUCH A DEVICE
PCT/FR1987/000338 WO1988001819A1 (en) 1986-08-28 1987-08-28 Method for recognizing telephone tones, device for implementing such method, telephone deviators and responders provided with such a device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8612267A FR2603443A1 (en) 1986-08-28 1986-08-28 METHOD FOR RECOGNIZING TELEPHONE TONES, DEVICE IMPLEMENTING THE METHOD, TELEPHONE DEVICE AND ANSWERING MACHINE PROVIDED WITH SUCH A DEVICE

Publications (1)

Publication Number Publication Date
FR2603443A1 true FR2603443A1 (en) 1988-03-04

Family

ID=9338598

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8612267A Pending FR2603443A1 (en) 1986-08-28 1986-08-28 METHOD FOR RECOGNIZING TELEPHONE TONES, DEVICE IMPLEMENTING THE METHOD, TELEPHONE DEVICE AND ANSWERING MACHINE PROVIDED WITH SUCH A DEVICE

Country Status (2)

Country Link
FR (1) FR2603443A1 (en)
WO (1) WO1988001819A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2894743A1 (en) * 2005-12-08 2007-06-15 Univ La Reunion Digital information transmission method for e.g. satellite, involves transmitting word starting and ending indicators and preventing signal transmission between indicators during duration equal to value multiplied by time units

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124977C1 (en) * 1991-07-27 1992-09-10 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030821A (en) * 1978-09-29 1980-04-10 Plantronics Tone detector for a telephone answering system
JPS5966254A (en) * 1982-10-07 1984-04-14 Sony Corp Automatic answering telephone set
DE3346792A1 (en) * 1982-12-28 1984-07-12 Tamura Electric Works Ltd., Tokio/Tokyo ANSWERING MACHINE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030821A (en) * 1978-09-29 1980-04-10 Plantronics Tone detector for a telephone answering system
JPS5966254A (en) * 1982-10-07 1984-04-14 Sony Corp Automatic answering telephone set
DE3346792A1 (en) * 1982-12-28 1984-07-12 Tamura Electric Works Ltd., Tokio/Tokyo ANSWERING MACHINE

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 173 (E-259)[1610], 9 août 1984; & JP-A-59 66 254 (SONY K.K.) 14-04-1984 *
POST OFFICE ELECTRICAL ENGINEERS JOURNAL, vol. 71, no. 2, juillet 1978, pages 117-121, Londres, GB; R.S.BROWN: "A new method of tone indentification" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2894743A1 (en) * 2005-12-08 2007-06-15 Univ La Reunion Digital information transmission method for e.g. satellite, involves transmitting word starting and ending indicators and preventing signal transmission between indicators during duration equal to value multiplied by time units
WO2008068394A1 (en) * 2005-12-08 2008-06-12 Universite De La Reunion Method and system for transmitting information

Also Published As

Publication number Publication date
WO1988001819A1 (en) 1988-03-10

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