PROCESS OF RADIO TRANSMISSION AND RECEPTION OF FLOW OF DIGITAL INFORMATION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 1998 - IPC

FIELD: radio engineering, radio communication. SUBSTANCE: radio transmitting station 12 sends digital data with preset speed to receiving station 18. Receiving station is controlled by synchronization circuit 22 which identifies specified unblanking code. Digital data are transmitted as sequence of bits. Each sequence includes first group of bits BR for synchronization of synchronization circuit and data transmission speed. It is followed by second group of bits SC which carries unblanking code. Identification of unblanking code gives receiving station possibility to receive and process transmitted information. Unblanking code is composed of sequence of bits of logic 1 and 0 and some bits of sequence change to form groups of three identical bits (111, 000) Each group of three bits has number of bits not more than two adjacent pairs of bits identical by logic meaning and opposite by sign (10, 01). Groups of identical bits are arranged in first part of second group so that possibilities of erroneous identification are minimized and synchronization achieved by first group BR does not change. EFFECT: improved reliability and efficiency of process. 7 cl, 8 wdg