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.)
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Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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Filing date
Publication date
Application filed by Nippon Telegraph and Telephone CorpfiledCriticalNippon Telegraph and Telephone Corp
Publication of FR2246131A1publicationCriticalpatent/FR2246131A1/fr
Application grantedgrantedCritical
Publication of FR2246131B1publicationCriticalpatent/FR2246131B1/fr
H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo
(AREA)
Analogue/Digital Conversion
(AREA)
Transmission Systems Not Characterized By The Medium Used For Transmission
(AREA)
FR7428429A1973-08-201974-08-19Digital multiplex echo suppression system - has two storage devices at transmission and reception sides
GrantedFR2246131A1
(en)