H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/19
H04J 3/06 (2006.01) H04J 3/04 (2006.01)
Patent
CA 1250675
Abstract of the Disclosure: On multiplexing a predetermined number of lower-order multiplex digital transmission signals of a common frame period into a higher-order multiplex digital communication signal, an identification pattern (X, Y, Z) is inserted in each frame of each transmission signal. The identification patterns are specific to the respective transmission signals, The identification patterns in each frame period of the respective transmission signals are multiplexed into a single pattern (I1x, I2x, I3z, I1y, I2y, I3y, I1z, I2z, I3z) in the communication signal and used to indicate lower-order multiplex digital signal receivers to which the respective transmission signals should be directed, After the communication signal is demultiplexed into lower-order multiplex digital reception signals, the identification patterns are detected with frame synchronism established between the lower-order transmission and reception signals. Each identification pattern may consist of a preselected number of binary bits where two to the power of the preselected number should not be less than the predetermined number.
445952
Asano Hiroshi
Rokugo Yoshinori
Corporation Nec
Smart & Biggar
LandOfFree
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