| 摘要 |
FIELD: electrical communications; binary data transmission and reception. SUBSTANCE: on sending end, sequence of harmonic signals characterizing logic levels is generated and sequence of signal data is transmitted over communication channel; on receiving end, signal received is passed through analog-to-digital converter and data sequence received is identified by digital reading array formed in the process; in identifying received data sequence zero-level crossing moment of signal is recorded and mean value of this signal is determined; readings of signal received and mean values of signal cycles used to transmit logic levels are compared; moment of maximal approach of received signal to its mean value is found; found interval between first zero-crossing moment of signal received and its mean value is regarded as signal Ts; this value is compared with cycle of signal used for organizing transmission of logical levels and points to value of logical level received. EFFECT: facilitated procedure of binary data transmission and identification. 1 cl, 2 dwg |
