process for preparation of digital signals for the transmission / reception of a stream of digital signals on a cultural of channels

摘要

Method for processing digital signals for transmission/reception from a transmitter (TX) to a receiver (RX) via a transmission management module (GTX) and a reception management module (GRX), on/by a plurality (N) of channels (C i ) with a respective capacity (c i ), of a data stream (F TX ) comprising, in a time unit (T), an assigned quantity of basic units (Uj) of digital signals not greater than the sum (C TOT ) of the individual transmission capacities (c i ) of the channels (C i ), said transmission/reception being regulated by a system clock (CKS) and by an enable signal (En) able to generate a clock signal (CKSEn) with smaller fronts compared to the system clock (CKS), the method comprising the following steps: - defining a derived clock signal (CKSEn - CKS&En), comprising the fronts of the system clock (CKS) derived from enabling of the Enable signal (En); - defining a derived Enable signal (CKSEn/N) obtained from division by N of the fronts of the derived clock signal (CKSEn); - defining N status counters (Cont i ), each associated with a corresponding channel C i , which count for c i up to c max ,; - defining N overflow registers (Ovf i ) with binary values (0/1) each associated with a corresponding channel C i ; - defining a channel counter (CONTN) which assumes the sequence of values 0,1,2... , N-1; - defining N synchronization signals SYNC i each designed to enable sending of the units Uj to the corresponding channel C i ; - initializing the system at a time unit clock (CKU) by setting: all the status counters Cont i = 0, all the overflow signals Ovf i = 0, the channel counter ContN = 0, all the signals SYNCi = 0 - incrementing at each front of the derived clock signal (CKSEn) enabled by the derived enable signal (CKSEn/N) the value of each channel counter ((Cont i ) by the value c i equal to the existing capacity of the channel C i ; - if Cont i ‰¥c max forcing Cont i =Cont i -c max , and - forcing the overflow signal of the channel C i to 1, O V f i =1 - incrementing by one unit the value of the channel counter (ContN) at each front of the derived clock signal (CKSEn); - activating the signal SYNC i if the channel C i corresponding to the existing value of the channel counter (ContN) is in overflow, i.e. Ovf i =1, - generating a signal (SyncTX;SyncRX) for enabling inputting of the data (Uj) from the source (TX;GRX) to the receiver (GTX;RX) able to determine sending of the existing signal Uj on/by the enabled channel C i ,