ASYNCHRONOUS TRANSMITTER OF IDENTIFICATION NUMBERS TRANSMITTED IN 16-BIT DIGITAL CODE THROUGH A RADIO-TELEPHONY CHANNEL AND METHOD OF ACCOMPLISHING SUCH TRANSMISSION

摘要

2. Transmitter circuit for transmission of identification numbers of a 16-bit digital code over a radio-telephone line, containing a frequency generator cooperating with a frequency divider, real-time clock, counter and shift register, characterized in that it consists of a quartz generator (1) connected to the first input of a NAND logical gate (2) whose output is connected in parallel to the first input of the first frequency divider (7) with controlled degree of division, and to the input of the second frequency divider (3), whose output is connected in parallel to the input of a bit counter (4) and to the first input of a block of shift registers (6), whose second input is connected to the bit counter (4) and whose third input is connected to the circuit of a binary coder of identification numbers (5), the output leading via the first frequency divider (7) and then a low-pas filter (10) to an FM transmitter (12), whose synchronization output is connected via a special delay circuit (11) to the first input of a start-stop circuit (8), whose second input is connected to the real-time clock (9), whose third input is connected to the second output of the bit counter (4) and whose output is connected to the second input of the logical gate (2).