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EP0116296A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Method and device for signalling between picture phone sets at an existing telephone link

Assignee: TE Connectivity Germany GmbH
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Filing: 1984-01-12
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Granted: —
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Expires: 2004-01-12
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Abstract

Abstract Translated from German Gegenstand der Erfindung ist ein Verfahren und eine Vorrichtung zur Signalisierung einer Bilderfernsprechverbindung für Bildfernsprechapparate. Im Bildfernsprechapparat (1) sind hierbei eine Sendeeinrichtung (2), die während des Abhebens des Handapparates (1a) ein kurzes Erkennungssignal als Bildfernsprecherkennungssignal (2a) im Hörkanal aussendet, eine Erkennungsschaltung (3) zur Erkennung eines ankommenden Bildfernsprecherkennungssignals und eine akustische und/oder optische Anzeige (D) angeordnet. The invention relates to a method and a device for signaling an image telephone connection for image telephone sets. In the video telephone set (1) there are a transmitting device (2) which, while lifting the handset (1a), emits a short recognition signal in the auditory canal as a video telephone recognition signal (2a), a recognition circuit (3) for recognizing an incoming video telephone recognition signal and an acoustic and / or optical display (D) arranged.

Inventors

  • 👤 Jens Dr. Weber
  • 👤 Ernst-Michael Czempiel

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 19:46
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0435; H04Q11/0471; H04N; H04N7/00; H04N7/14; H04N7/141; H04N7/147; H04Q3/00; H04Q2213/00; H04Q2213/038; H04Q2213/09; H04Q2213/206; H04Q2213/337

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US3573377A Cited
DE2009075A1 Cited
US3922491A Cited

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