FIELD: digital systems.
SUBSTANCE: invention is intended for a distributed choice between sequential and priority transmission of messages by objects of digital systems. The essence of the invention is that when objects use selection signals of two different frequencies after the objects receive the *S signal of the beginning of selection, each object within 2*T time with a *T duration, not less than the time the signal leaves the system, to allow the object to alternately transmit message (selecting (1)) does not transmit a select signal; to allow an object to transmit messages taking into account the priority of the object (selecting (2)) transmits a signal for selecting *T duration, and an arbitrary frequency ƒ0 ; when it is prohibited to change the message transmission order used by objects (selecting (3)) transmits the same signal for selecting a different frequency ƒ1, and in the next interval 2*T objects, in the absence of signals, begin transmitting messages, in the presence of only frequency signals ƒ0 start transmission taking into account priority, if frequency signals are present ƒ0 prohibits changing the order of message transmission. Moreover, when objects use signals to select one frequency within a time limit of 3*T, objects when selecting (1) do not transmit signals, when selecting (3) they transmit a signal selecting S 3 frequenciesƒ 1, duration *T+s 3 with limitation s 3< * T, when selecting (2), the S2 frequency selection signal is transmitted ƒ0, duration s2 < s3, and in the next interval of 3*T objects, in the absence of signals, begin transmitting messages, in the presence of S2 signals, they begin transmission taking into account priority, in the presence of S3 signals, they are prohibited from changing the order of message transmission.
EFFECT: providing the ability to create a common synchronization signal for objects that transfers asynchronously operating objects into a synchronously interacting system of objects, and simultaneously make a choice between sequential message transmission and taking into account the priorities of objects.
3 cl, 1 dwg
