AUTOMATIC CONTROL SYSTEM Russian patent published in 1994 - IPC

FIELD: communications. SUBSTANCE: automatic control system has N units 1.1, . . . , IN′ which are connected by double-wire communication lines 2.1-3.1, . . . , 2. N-3. N to central unit 4 having pulse oscillator 5, synchronization signal shaper 6, line signal shapers 7.1, . . . , 7.N′, dial indicator 8, information pulse selector 9, unit 10 for indication of selected direction state. Each of N control units has transducers, multichannel commutator, counter having decoder, functional converter, switch, control pulse shaper, diode and capacitor. Dial indicator 8 has N line control units 8.1.1, . . . , 8.1. N, gate signal shaper 8.2, priority decoder 8.3, direction selection unit 8.4, selected direction pointer unit 8.5. EFFECT: increased reliability by decreased number of wires for communication lines between distributed TV devices. 5 cl, 10 dwg