EP 0042587 B1 19840613 - METHOD OF TRANSFORMING SPEECH SIGNALS SUBDIVIDED INTO SIGNAL SEGMENTS FOR ENCIPHERED TRANSMISSION, AND APPARATUS FOR REALIZING THIS METHOD
Title (en)
METHOD OF TRANSFORMING SPEECH SIGNALS SUBDIVIDED INTO SIGNAL SEGMENTS FOR ENCIPHERED TRANSMISSION, AND APPARATUS FOR REALIZING THIS METHOD
Publication
Application
Priority
CH 476380 A 19800620
Abstract (en)
[origin: EP0042587A1] 1. Method for modifying speech signals divided into segments for ciphered transmission, wherein the individual signal segments (T) are compressed in time by reading them into storages and out of them with different rates, characterized in that the time intervals (Tu ) obtained by said compression are used of the repeated transmission of the edge portions of each signal segment, such that the original signal is continued at the intersection of each segment of the ciphered signals and characterized in that the ciphered signal is combined with a weighting function within the intervals (Tu ) obtained by said compression, such that in said intervals a desired switching function is generated.
IPC 1-7
IPC 8 full level
G10L 25/00 (2013.01); G10L 19/00 (2013.01); G10L 21/047 (2013.01); G10L 21/049 (2013.01); H04B 14/04 (2006.01); H04K 1/06 (2006.01)
CPC (source: EP)
H04K 1/06 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0042587 A1 19811230; EP 0042587 B1 19840613; AR 228273 A1 19830215; AT E7993 T1 19840615; BR 8103891 A 19820309; DE 3164136 D1 19840719; DK 271481 A 19811221; ES 503158 A0 19830201; ES 8303853 A1 19830201; FI 811862 L 19811221; JP S5729100 A 19820216; NO 812082 L 19811221
DOCDB simple family (application)
EP 81104666 A 19810617; AR 28578081 A 19810619; AT 81104666 T 19810617; BR 8103891 A 19810619; DE 3164136 T 19810617; DK 271481 A 19810619; ES 503158 A 19810617; FI 811862 A 19810615; JP 9460181 A 19810620; NO 812082 A 19810618