Spurious signal suppression in automatic symbol reader

Claim 1

IN APPARATUS FOR RECEIVING A PLURALITY OF DIFFERENT SIGNALS, FOR RECOGNIZING DESIRED INFORMATION SIGNALS, AND FOR IGNORING A SPURIOUS SIGNAL, THE COMBINATION OF: A PLURALITY OF INFORMATION SIGNAL RECOGNITION CIRCUITS, ONE FOR EACH INFORMATION SIGNAL, FOR RECEIVING SAID SIGNALS AND FOR PRODUCING RECOGNITION CIRCUIT OUTPUT SIGNALS IN RESPONSE THERETO; A PLURALITY OF INFORMATION SIGNAL OUTPUT LINES, ONE FOR EACH INFORMATION SIGNAL; A SENSING CIRCUIT FOR SENSING SAID RECOGNITION CIRCUIT OUTPUT SIGNALS AND NORMALLY OPERABLE IN RESPONSE THERETO TO PRODUCE AN OUTPUT SIGNAL ON THE SIGNAL OUTPUT LINE CORRESPONDING TO THE RECEIVED INFORMATION SIGNAL; A SPURIOUS SIGNAL RECOGNITION CIRCUIT FOR RECEIVING SAID SIGNALS AND OPERABLE TO PRODUCE AN OUTPUT SIGNAL IN RESPONSE TO A RECEIVED SPURIOUS SIGNAL; AND MEANS RESPONSIVE TO SAID OUTPUT SIGNAL OF SAID SPURIOUS SIGNAL RECOGNITION CIRCUIT FOR INHIBITING OUTPUT SIGNALS ON ALL OF SAID INFORMATION SIGNAL OUTPUT LINES.