Electronic clock

Abstract

Abstract AN ELECTRONIC CLOCK CONTROLLED BY PERIODIC WIRELESS TIME SIGNALS, THE SIGNALS COMPRISING MODULATIONS OF A CARRIER WAVE, THE MODULATIONS OCCURRING ONCE EVERY SECOND, AN ADDITIONAL MODULATION OCCURRING IN THE FIRST SECOND OF EVERY MINUTE IN ORDER TO MARK THE BEGINNING OF THE MINUTE, THE ELECTRONIC CLOCK FURTHER COMPRISING A HF RECEIVER, A DETECTOR TO TRANSFORM THE MODULATIONS INTO A SECOND PULSE EVERY SECOND AND INTO A SECOND PULSE FOLLOWED BY MINUTE PULSE AT THE BEGINNING OF EVERY MINUTE, A STEP-BY-STEP MOTOR DRIVING MEANS, THE MOTOR DRIVING MEANS INCLUDING MEANS FOR VISUALLY INDICATING THE TIME, THE DETECTOR INCLUDING MEANS FOR CONTROLLING THE MOTOR MEANS, CIRCUIT MEANS FOR ADJUSTING THE INDICATING MEANS IN THE EVENT OF LACK OF SYNCHRONIZATION BETWEEN THE SIGNALS AND THE TIME INDICATIONS, THE CIRCUIT MEANS INCLUDING MEANS FOR SELECTING THE MINUTE PULSES FROM THE SECOND PULSES, THE SELECTING MEANS INCLUDING TWO INPUTS AND AN OUTPUT, MEANS FOR REPRODUCING A MINUTE PULSE AT THE OUTPUT WHEN THE SELECTING MEANS IS SIMULTANEOUSLY EXCITED BY A MINUTE PULSE AT ONE INPUT AND BY A PULSE COMPLEMENTRY TO ONE OF THE SECOND PULSES AT THE OTHER INPUT, THE ADJUSTING CIRCUIT INCLUDING MEANS FOR TRANSDUCING THE SELECTED MINUTE PULSES INTO SIGNALS COMPARABLE WITH THE POSITION OF THE TIME INDICATING MEANS SO AS TO DETECT A LACK OF SYNCHRONIZATION.

Inventors

• 👤 Jean Fellrath
• 👤 Max Forrer

Bibliographic Details