NO301859B1 - Dupleks höyttalertelefon til radio- og ledningsbaserte telefoner - Google Patents

Dupleks höyttalertelefon til radio- og ledningsbaserte telefoner Download PDF

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Publication number
NO301859B1
NO301859B1 NO863275A NO863275A NO301859B1 NO 301859 B1 NO301859 B1 NO 301859B1 NO 863275 A NO863275 A NO 863275A NO 863275 A NO863275 A NO 863275A NO 301859 B1 NO301859 B1 NO 301859B1
Authority
NO
Norway
Prior art keywords
signal
elements
changed
modified
altered
Prior art date
Application number
NO863275A
Other languages
English (en)
Norwegian (no)
Other versions
NO863275L (no
NO863275D0 (no
Inventor
Larry C Puhl
Richard J Vilmur
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 NO863275D0 publication Critical patent/NO863275D0/no
Publication of NO863275L publication Critical patent/NO863275L/no
Publication of NO301859B1 publication Critical patent/NO301859B1/no

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
NO863275A 1984-12-14 1986-08-14 Dupleks höyttalertelefon til radio- og ledningsbaserte telefoner NO301859B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/681,540 US4629829A (en) 1984-12-14 1984-12-14 Full duplex speakerphone for radio and landline telephones
PCT/US1985/002050 WO1986003912A1 (en) 1984-12-14 1985-10-16 Full duplex speakerphone for radio and landline telephones

Publications (3)

Publication Number Publication Date
NO863275D0 NO863275D0 (no) 1986-08-14
NO863275L NO863275L (no) 1986-08-22
NO301859B1 true NO301859B1 (no) 1997-12-15

Family

ID=24735704

Family Applications (1)

Application Number Title Priority Date Filing Date
NO863275A NO301859B1 (no) 1984-12-14 1986-08-14 Dupleks höyttalertelefon til radio- og ledningsbaserte telefoner

Country Status (13)

Country Link
US (1) US4629829A (fi)
EP (1) EP0204718B2 (fi)
JP (1) JPS61502581A (fi)
KR (1) KR930007740Y1 (fi)
CN (1) CN1003555B (fi)
AT (1) ATE73276T1 (fi)
AU (1) AU574983B2 (fi)
CA (1) CA1234235A (fi)
DE (1) DE3585532D1 (fi)
DK (1) DK385486A (fi)
FI (1) FI88570C (fi)
NO (1) NO301859B1 (fi)
WO (1) WO1986003912A1 (fi)

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* Cited by examiner, † Cited by third party
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Also Published As

Publication number Publication date
EP0204718B1 (en) 1992-03-04
EP0204718A1 (en) 1986-12-17
DK385486D0 (da) 1986-08-13
FI88570B (fi) 1993-02-15
WO1986003912A1 (en) 1986-07-03
CN1003555B (zh) 1989-03-08
AU5018185A (en) 1986-07-22
JPH0511687B2 (fi) 1993-02-16
US4629829A (en) 1986-12-16
ATE73276T1 (de) 1992-03-15
EP0204718B2 (en) 1998-04-22
JPS61502581A (ja) 1986-11-06
CN85109020A (zh) 1986-11-19
CA1234235A (en) 1988-03-15
FI863169A (fi) 1986-08-04
FI863169A0 (fi) 1986-08-04
DK385486A (da) 1986-08-13
NO863275L (no) 1986-08-22
KR930007740Y1 (en) 1993-11-17
NO863275D0 (no) 1986-08-14
AU574983B2 (en) 1988-07-14
EP0204718A4 (en) 1988-03-30
DE3585532D1 (de) 1992-04-09
FI88570C (fi) 1993-05-25

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Free format text: LAPSED IN APRIL 2002