FR2016608A1 - - Google Patents

Info

Publication number
FR2016608A1
FR2016608A1 FR6929630A FR6929630A FR2016608A1 FR 2016608 A1 FR2016608 A1 FR 2016608A1 FR 6929630 A FR6929630 A FR 6929630A FR 6929630 A FR6929630 A FR 6929630A FR 2016608 A1 FR2016608 A1 FR 2016608A1
Authority
FR
France
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
FR6929630A
Other languages
French (fr)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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
Priority claimed from NO336968A external-priority patent/NO123134B/no
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2016608A1 publication Critical patent/FR2016608A1/fr
Pending legal-status Critical Current

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
    • H04M9/10—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic with switching of direction of transmission by voice frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Amplifiers (AREA)
FR6929630A 1968-08-29 1969-08-29 Pending FR2016608A1 (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO336968A NO123134B (sv) 1968-08-29

Publications (1)

Publication Number Publication Date
FR2016608A1 true FR2016608A1 (sv) 1970-05-08

Family

ID=19879568

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6929630A Pending FR2016608A1 (sv) 1968-08-29 1969-08-29

Country Status (8)

Country Link
US (1) US3660603A (sv)
BE (1) BE738074A (sv)
CH (1) CH499934A (sv)
DK (1) DK132640C (sv)
FR (1) FR2016608A1 (sv)
GB (1) GB1250380A (sv)
NL (1) NL6912967A (sv)
SE (1) SE351350B (sv)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5242643B2 (sv) * 1973-10-18 1977-10-26
US4028506A (en) * 1973-12-12 1977-06-07 Nippon Electric Company, Ltd. Maximum value tracing circuit for digitized voice signals
JPS5411203B2 (sv) * 1974-05-02 1979-05-12
US3970786A (en) * 1974-06-27 1976-07-20 Stromberg-Carlson Corporation Loudspeaking telephone with improved receive sensitivity
US3963868A (en) * 1974-06-27 1976-06-15 Stromberg-Carlson Corporation Loudspeaking telephone hysteresis and ambient noise control
US3953676A (en) * 1974-12-12 1976-04-27 Northern Electric Company, Limited Digital control of a loudspeaking telephone system
US4025728A (en) * 1976-01-29 1977-05-24 Sava Jacobson Speaker telephone
US4465902A (en) * 1982-10-08 1984-08-14 Zenith Electronics Corporation Digital space phone system
US4542263A (en) * 1984-03-07 1985-09-17 Oki Electric Industry Co., Ltd. Speech control circuit
US4980908A (en) * 1989-05-30 1990-12-25 Voicetek Corporation Voice-switched gain control for voice communication equipment connected to telephone lines
JPH06338934A (ja) * 1993-05-25 1994-12-06 Exar Corp 事象駆動型制御回路を有するスピーカーホーン

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB668858A (en) * 1949-04-29 1952-03-26 Telephone Mfg Co Ltd Improvements in and relating to electrical communication systems
US3075045A (en) * 1960-08-29 1963-01-22 Bell Telephone Labor Inc Speakerphone
US3113181A (en) * 1960-11-25 1963-12-03 Ericsson Telefon Ab L M Amplifier arrangement
DE1281499B (de) * 1966-03-23 1968-10-31 Siemens Ag Schaltungsanordnung fuer sprachgesteuerte Freisprechgeraete mit veraenderbarem Daempfungshub

Also Published As

Publication number Publication date
DE1942814A1 (de) 1970-05-06
NL6912967A (sv) 1970-03-03
BE738074A (sv) 1970-02-27
GB1250380A (sv) 1971-10-20
CH499934A (de) 1970-11-30
SE351350B (sv) 1972-11-20
US3660603A (en) 1972-05-02
DK132640C (da) 1976-06-08
DK132640B (da) 1976-01-12
DE1942814B2 (de) 1976-10-14

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