Signal generator with external start pulse phase control

Claim 1

IN AN ELECTRICAL CIRCUIT ADAPTED TO RECEIVE CYCLICALLY VARYING INPUT SIGNALS, THE COMBINATION COMPRISING A COUNTER HAVING ZERO, INTERMEDIATE AND FULL COUNT CONDITIONS, A MULTIVIBRATOR CONNECTED TO THE COUNTER TO ADVANCE THE LATTER, MEANS PREVENTING ADVANCING OF THE COUNTER BY THE MULTIVIBRATOR WHEN THE COUNTER IS IN ITS FULL COUNT CONDITION, MEANS RESPONSIVE TO THE INPUT SIGNALS FOR RESETTING THE COUNTER TO ITS ZERO COUNT CONDITION AT A PREDETERMINED PHASE INCREMENT OF EACH HALF CYCLE OF THE INPUT SIGNALS, MEANS INCLUDING THE COUNTER SETTING THE MULTIVIBRATOR FREQUENCY AT A MULTIPLE OF THE INPUT FREQUENCY CORRESPONDING TO TWICE THE NUMBER OF COUNT CONDITIONS, A REGISTER, MEANS RENDERED EFFECTIVE AT A PREDETERMINED TIME FOR SETTING THE REGISTER IN ACCORDANCE WITH THE COUNT EXISTING IN THE COUNTER, A COMPARING CIRCUIT PRODUCING OUTPUT PULSES EACH TIME THAT THE COUNTS IN THE COUNTER AND REGISTER ARE EQUAL, AND A BISTABLE DEVICE SWITCHED FROM ONE STATE TO THE OTHER INCIDENT TO SUCCEEDING OUTPUT PULSES FROM THE COMPARING CIRCUIT.