ES2179825T3 - Interfono de puerta. - Google Patents

Interfono de puerta.

Info

Publication number
ES2179825T3
ES2179825T3 ES93102836T ES93102836T ES2179825T3 ES 2179825 T3 ES2179825 T3 ES 2179825T3 ES 93102836 T ES93102836 T ES 93102836T ES 93102836 T ES93102836 T ES 93102836T ES 2179825 T3 ES2179825 T3 ES 2179825T3
Authority
ES
Spain
Prior art keywords
circuit
door
vocal
station
phone
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 - Lifetime
Application number
ES93102836T
Other languages
English (en)
Spanish (es)
Inventor
Heinz Achenbach
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.)
Schneider Electric GmbH
Original Assignee
Ritto Werk Loh GmbH and Co KG
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 Ritto Werk Loh GmbH and Co KG filed Critical Ritto Werk Loh GmbH and Co KG
Application granted granted Critical
Publication of ES2179825T3 publication Critical patent/ES2179825T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones
    • 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
    • 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
    • H04M9/087—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 different frequency bands for transmitting and receiving paths ; using phase shifting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
ES93102836T 1992-03-13 1993-02-24 Interfono de puerta. Expired - Lifetime ES2179825T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4207995A DE4207995C1 (enExample) 1992-03-13 1992-03-13

Publications (1)

Publication Number Publication Date
ES2179825T3 true ES2179825T3 (es) 2003-02-01

Family

ID=6453957

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93102836T Expired - Lifetime ES2179825T3 (es) 1992-03-13 1993-02-24 Interfono de puerta.

Country Status (3)

Country Link
EP (1) EP0560120B1 (enExample)
DE (2) DE4207995C1 (enExample)
ES (1) ES2179825T3 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333456C1 (de) * 1993-09-30 1995-04-13 Grothe & Soehne Gmbh & Co Kg A Haussprechanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588859A (en) * 1983-08-02 1986-05-13 Zvie Liberman Two channel audio communication system
CA1226981A (en) * 1984-10-30 1987-09-15 Novatel Communications Ltd. Two way telephone communication system
US4700382A (en) * 1986-03-03 1987-10-13 American Telephone And Telegraph Company, At&T Information Systems, Inc. Voice-switched telephone circuit with center idle state
DE3804552C1 (en) * 1988-02-13 1989-03-02 Ritto-Werk Loh Gmbh & Co Kg, 6342 Haiger, De Door intercom system
DE3910879C2 (de) * 1989-04-04 1997-10-02 Grothe & Soehne Kg A Mit einer Sprachsteuerung ausgestattete Torstation einer Haussprechanlage

Also Published As

Publication number Publication date
EP0560120A2 (de) 1993-09-15
DE4207995C1 (enExample) 1993-04-15
DE59310298D1 (de) 2002-10-02
EP0560120A3 (en) 1995-04-26
EP0560120B1 (de) 2002-08-28

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