GENERATING CIRCUIT OF OPTIMAL TIME FUNCTIONS

摘要

THE INVENTION CONCERNS A GENERATOR CIRCUIT OF OPTIMUM TIME FUNCTIONS FOR CONTROLLING A MAGNETIC HEAD TRANSDUCER OF A MAGNETIC DISC DEVICE. THIS GENERATOR CIRCUIT INCLUDES A 12-DIGITAL DIGITAL-TO-ANALOG CONVERTER WHICH RECEIVES ONE OF THE REPRESENTATIVE SIGNALS OF THE POSITION ERROR AND WHICH PRODUCES AN OUTPUT SIGNAL REPRESENTATIVE OF AN ANALOGUE COMBINATION OF THE SIGNALS RECEIVED AT ITS ENTRIES; AN AMPLIFIER 18 THAT RECEIVES THE CONVERTER OUTPUT SIGNAL AND PRODUCES AN OUTPUT SIGNAL; AND A REACTIVE NETWORK HAVING A MULTIPLIER 22 WITH AN INPUT CONNECTED TO THE OUTPUT OF THE AMPLIFIER AND THE OUTPUT OF WHICH IS CONNECTED TO THE SECOND INPUT OF THE CONVERTER, THE REACTIVE NETWORK PRODUCING A PROPORTIONAL OUTPUT VOLTAGE TO THE SQUARE OF THE INPUT VOLTAGE, AND THE PROPORTIONALITY FACTOR IS FUNCTION OF INPUT REFERENCE VOLTAGE. THE CIRCUIT OF THE INVENTION ENABLES OPTIMIZING THE MOVEMENT OF MAGNETIC HEADS IN THE CASE OF SEARCHING A TRACK. / P