GB2331200B - Method of managing a central fax unit with a filter and a demodulator - Google Patents

Method of managing a central fax unit with a filter and a demodulator

Info

Publication number
GB2331200B
GB2331200B GB9821894A GB9821894A GB2331200B GB 2331200 B GB2331200 B GB 2331200B GB 9821894 A GB9821894 A GB 9821894A GB 9821894 A GB9821894 A GB 9821894A GB 2331200 B GB2331200 B GB 2331200B
Authority
GB
United Kingdom
Prior art keywords
demodulator
managing
filter
fax unit
central fax
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 - Fee Related
Application number
GB9821894A
Other languages
English (en)
Other versions
GB2331200A (en
GB9821894D0 (en
Inventor
Michel Menu
Dominique Cazin
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.)
Sagem SA
Original Assignee
Sagem SA
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 Sagem SA filed Critical Sagem SA
Publication of GB9821894D0 publication Critical patent/GB9821894D0/en
Publication of GB2331200A publication Critical patent/GB2331200A/en
Application granted granted Critical
Publication of GB2331200B publication Critical patent/GB2331200B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H04N1/32715—Detecting
    • H04N1/32717—Detecting a calling tone, e.g. CI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H04N1/32715—Detecting
    • H04N1/32719—Detecting a facsimile calling signal, e.g. CNG
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
    • H04N1/32704—Establishing a communication with one of a facsimile and another telecommunication apparatus sharing a single line
    • H04N1/32715—Detecting
    • H04N1/32726—Detecting signals other than facsimile protocol signals, e.g. DTMF signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Facsimile Transmission Control (AREA)
  • Facsimiles In General (AREA)
GB9821894A 1997-10-14 1998-10-08 Method of managing a central fax unit with a filter and a demodulator Expired - Fee Related GB2331200B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9712803A FR2769782B1 (fr) 1997-10-14 1997-10-14 Procede de gestion d'une unite centrale de telecopieur a filtre et demodulateur

Publications (3)

Publication Number Publication Date
GB9821894D0 GB9821894D0 (en) 1998-12-02
GB2331200A GB2331200A (en) 1999-05-12
GB2331200B true GB2331200B (en) 2002-09-18

Family

ID=9512181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9821894A Expired - Fee Related GB2331200B (en) 1997-10-14 1998-10-08 Method of managing a central fax unit with a filter and a demodulator

Country Status (3)

Country Link
DE (1) DE19847173A1 (fr)
FR (1) FR2769782B1 (fr)
GB (1) GB2331200B (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311580A (en) * 1988-07-18 1994-05-10 Canon Kabushiki Kaisha Communication apparatus for providing a modulated analog wave
FR2686207B1 (fr) * 1992-01-14 2001-10-12 Sagem Telecopieur videotex.
JP3247415B2 (ja) * 1992-02-24 2002-01-15 株式会社リコー 通信装置
JP2919685B2 (ja) * 1992-11-02 1999-07-12 シャープ株式会社 信号識別回路
US5490210A (en) * 1993-12-07 1996-02-06 Sasso; Bill J. Programmable telephone interface device
FR2735643A1 (fr) * 1995-06-15 1996-12-20 Canon Research Centre France S Procede et dispositif pour detecter la presence d'un signal periodique dans un ensemble de signaux

Also Published As

Publication number Publication date
DE19847173A1 (de) 1999-04-15
FR2769782B1 (fr) 2000-01-07
GB2331200A (en) 1999-05-12
GB9821894D0 (en) 1998-12-02
FR2769782A1 (fr) 1999-04-16

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20071008