Communication speed detection system

Abstract

Abstract PURPOSE:To detect a communication speed by a simple constitution, by leading a received data to a resonance circuit group prepared separately at every speed. CONSTITUTION:When starting communication, a transmitting data from an MODEM or a comparator, etc. is supplied from a line 4. Subsequently, this data is supplied to resonance circuits 5, 6 and 7 which are resonated to 100Hz, 200Hz and 300Hz, is supplied to one of detecting circuits 8, 9 and 10 through one of the resonance circuits in accordance with a communication speed, and is detected. This detecting output is supplied to one of AND gates 11, 12 and 13, and in a set state of a speed detecting latch 3, by an output of the AND gate to which the detecting output has been supplied, one of each 100, 200, 300b/s latch 14, 15 and 16 is set, and a value of a communication speed of a bit pattern received from the line 4 is displayed.

Inventors

• 👤 Tsugio Sugawara
• 👤 菅原　次男

Bibliographic Details