Compensating circuits

Claim 1

IN A CONVERTER SYSTEM WHEREIN AN OUTPUT SIGNAL IS DEVELOPED BY CHANGING THE ANALOGUE LEVEL OF THE OUTPUT SIGNAL, PRODUCED BY ONE OF A PLURALITY OF OUTPUT SIGNAL GENERATORS, UNTIL IT CORRESPONDS TO THE ANALOGUE EQUIVALENT OF A DIGITAL NUMBER IN A REGISTER, THE SYSTEM INCLUDING FIRST MEANS FOR PRODUCING A DIFFERENCE SIGNAL INDICATING THE DIFFERENCE BETWEEN SAID ANALOGUE EQUIVALENT AND AN APPLIED INPUT SIGNAL, SECOND MEANS FOR PRODUCING CURRENT WEIGHT SIGNALS REPRESENTING RESPECTIVE DIGITAL PLACES IN SAID REGISTER, AND THIRD MEANS CONTROLLING THE SETTING OF SAID REGISTER ACCORDING TO THE DIFFERENCE BETWEEN SAID ANALOGUE EQUIVALENT AND THE OUTPUT EQUIVALENT OF THE INPUT SIGNAL APPLIED TO SAID FIRST MEANS, AN ARRANGEMENT FOR COMPENSATING FOR ERROR COMPONENTS IN VARIOUS OF THE MEANS EMPLOYED IN SAID CONVERTER, SAID ARRANGEMENT COMPRISING: A PLURALITY OF INPUT SWITCHES FOR APPLYING REFERENCE INPUT SIGNALS TO SAID FIRST MEANS; FOURTH MEANS FOR SETTING SAID REGISTER TO DIGITAL VALUES REPRESENTING THE ANALOGUE EQUIVALENT OF THE OUTPUT SIGNAL DESIRED FOR THE PARTICULAR REFERENCE SIGNAL APPLIED; FIFTH MEANS FOR APPLYING SAID DIFFERENCE SIGNAL TO A RESPECTIVE ONE OF SAID PLURALITY OF OUTPUT SIGNAL GENERATORS, EACH GENERATOR BEING ADAPTED TO PRODUCE A CORRECTION SIGNAL FOR A RESPECTIVE CIRCUIT HAVING AN ERROR OUTPUT COMPONENT; AND SIXTH MEANS FOR APPLYING THE CORRECTION SIGNAL OF EACH OUTPUT SIGNAL GENERATOR RECEIVING SAID DIFFERENCE SIGNAL THROUGH SAID FIFTH MEANS TO A RESPECTIVE CIRCUIT REQUIRING COMPENSATION TO CORRECT FOR ITS ERROR COMPONENT.