Synchronizing of electron beam scanning in a narrow bandwidth pseudorandom dot scan television system

Claim 1

APPARATUS FOR SYNCHRONIZING A PLURALITY OF TIMING SIGNALS IN A RECEIVER WITH SIMILAR SIGNALS RECEIVED FROM A TRANSMITTER COMPRISING MEANS IN THE TRANSMITTER FOR PROVIDING HIGHER FREQUENCY TIMING PULSES AND LOWER FREQUENCY TIMING PULSES AT HARMONICALLY RELATED FREQUENCIES, SAID HIGHER FREQUENCY TIMING PULSES BEING SYNCHRONIZED WITH, AND HAVING A DIFFERENT LENGTH OF DURATION THAN, SAID LOWER FREQUENCY TIMING PULSES, AND BEING COMBINED THEREWITH SUCH THAT THE COMBINATION OF SAID PULSES COMPRISES A SERIES OF PULSES AT SAID HIGHER FREQUENCY, ALL HAVING A FIRST LENGTH OF DURATION EXCEPT THOSE COINCIDING WITH SAID LOWER FREQUENCY TIMING PULSES, SAID LATTER PULSES HAVING A SECOND LENGTH OF DURATION DIFFERENT FROM SAID FIRST LENGTH, MEANS IN THE RECEIVER FOR RECEIVING SAID COMBINED PULSES, SYNCHRONIZING MEANS RESPONSIVE TO PULSES AT SAID HIGHER FREQUENCY, MEANS RESPONSIVE TO SAID COMBINED PULSES FOR PORVIDING IN SYNCHRONIZATION THEREWITH PULSES OF SAID FIRST LENGTH OF DURATION AT SAID HIGHER FREQUENCY, MEANS FOR COMBINING SAID LAST-MENTIONED PULSES IN OPPOSITION TO SAID COMBINED PULSES RECEIVED FROM THE TRANSMITTER, SAID LASTMENTIONED MEANS THEREBY PROVIDING PULSES AT SAID LOWER FREQUENCY IN ACCORDANCE WITH THE PULSES PROVIDED IN THE TRANSMITTER AT SAID LOWER FREQUENCY, AND SYNCHRONIZING MEANS RESPONSIVE TO SAID PULSES AT SAID LOWER FREQUENCY.