Control word use in bit-by-bit data communication system

Claim 1

IN A SYSTEM FOR COMMUNICATING A DIGITAL DATA MESSAGE OF AT LEAST ONE WORD HAVING A PRESELECTED NUMBER OF BITS, COMPRISING A TRANSMITTER, A RECEIVER, AND A TRANSMISSION LINE INTERCONNECTING SAID TRANSMITTER AND RECEIVER, SAID TRANSMITTER INCLUDING MEANS FOR STORING SAID MESSAGE WORD AND AN INTERNAL CONTROL WORD, SAID CONTROL WORD HAVING A NUMBER OF BITS EQUAL TO SAID PRESELECTED NUMBER OF BITS IN SAID MESSAGE WORD AND INCLUDING ONLY ONE SELECTED BIT OF A POSSIBLE TWO BINARY BITS IN A PREDETERMINED POSITION TO INDICATE THE AVAILABILITY OF SAID STORING MEANS FOR MESSAGE TRANSMISSION, A CLOCK SOURCE FOR PROVIDING A PREDETERMINED NUMBER OF DISCRETE VOLTAGE PULSES IN CORRESPONDING DISTINCT TIME SLOTS OF A REPETITIVE TIMING CYCLE, MEANS ACTUATED BY A FIRST GROUP OF SAID TIMING PULSES TO ACTIVATE SAID STORING MEANS FOR SHIFTING SAID SELECTED BIT ONE POSITION AT A TIME FROM SAID PREDETERMINED POSITION UNTIL SAID SELECTED BIT IS AGAIN RETURNED TO SAID PREDETERMINED POSITION, AND MEANS OPERATED BY A SECOND GROUP OF SAID TIMING PULSES FOR ACTIVATING SAID STORING MEANS TO TRANSMIT ONE BIT OF SAID MESSAGE WORD TO SAID LINE IN CORRESPONDENCE WITH EACH OF SAID SHIFTINGS OF SAID SELECTED BIT IN SAID CONTROL WORD ONE POSITION AT A TIME FOR TRANSMITTING SAID MESSAGE WORD FROM SAID STORING MEANS TO SAID LINE ON A BIT-BY-BIT BASIS, SAID RECEIVER INCLUDING MEANS FOR STORIONG SAID MESSAGE WORD AND AN INTERNAL CONTROL WORD, SAID LAST-MENTIONED CONTROL WORD BEING IDENTICAL WITH SAID TRANSMITTER CONTROL WORD AND INCLUDING SAID SELECTED BIT, A SECOND CLOCK SOURCE FOR PROVIDING A PREDETERMINED NUMBER OF DISCRETE VOLTAGE PULSES IN CORRESPONDING DISTINCT TIME SLOTS OF A SECOND REPETITIVE TIMING CYCLE, MEANS RESPONSIVE TO A FIRST GROUP OF SAID PULSES OF SAID SECOND CLOCK SOURCE TO ACTIVATE SAID RECEIVER STORING MEANS FOR SHIFTING SAID SELECTED BIT ONE POSITION AT A TIME THEREIN UNTIL SAID SELECTED BIT IS RETURNED AGAIN TO SAID PREDETERMINED POSITION IN SAID RECEIVER CONTROL WORD, AND MEANS RESPONSIVE TO A SECOND GROUP OF SAID CONTROL CLOCK PULSES FOR ACTIVATING SAID RECEIVER STORING MEANS TO STORE THEREIN EACH ENTIRE MESSAGE WORD RECEIEVED FROM SAID LINE IN A POSITION CORRESPONDING WITH THE RESPECTIVE POSITIONS OF SAID SELECTED BIT IN SAID RECEIVER CONTROL WORD ON A BITBY-BIT BASIS.