Difference amplifier with cross bias networks for independent current flow adjustments

Claim 1

A DIFFERENCE AMPLIFIER HAVING FIRST AND SECOND INPUTS FOR RESPONDING TO A COMMON MODE SIGNAL CONDITION OR TO A DIFFERENTIAL INPUT SIGNAL CONDITION, COMPRISING FIRST AND SECOND AMPLIFYING CIRCUIT BRANCES FOR RECEIVING SAID FIRST AND SECOND INPUTS RESPECTIVELY, EACH OF SAID BRANCHES INCLUDING AMPLIFYING MEANS FOR CONTROLLING THE CURRENT FLOW IN A LOAD CIRCUIT ACCORDING TO THE CONDUCTIVITY OF THE AMPLIFYING MEANS, AND MEANS RECEIVING ONE OF SAID INPUTS AND APPLYING IT TO SAID AMPLIFYING MEANS, FIRST MEANS INCLUDING A BIAS NETWORK COUPLING THE RECEIVING MEANS OF SAID FIRST BRANCH TO THE AMPLIFYING MEANS OF THE SECOND BRANCH FOR VARIABLY ESTABLISHING THE BIAS APPLIED TO THE AMPLIFYING MEANS OF THE SECOND BRANCH TO CONTROL THE CONDUCTIVITY THEREOF, TO RENDER IT INDEPENDENT OF THE CONDUCTIVITY OF THE AMPLIFYING MEANS OF THE FIRST BRANCH, AND SECOND MEANS INCLUDING A BIAS NETWORK COUPLING THE RECEIVING MEANS OF SAID SECOND BRANCH TO THE AMPLIFYING MEANS OF THE FIRST BRANCH FOR VARIABLY ESTABLISHING THE BIAS APPLIED TO THE AMPLIFYING MEANS OF THE FIRST BRANCH TO CONTROL THE CONDUCTIVITY THEREOF TO RENDER IT INDEPENDENT OF THE CONDUCTIVITY OF THE AMPLIFYING MEANS OF THE SECOND BRANCH, SO THAT THE CURRENT FLOW IN ONE LOAD CIRCUIT IS INDEPENDENT OF THE CURRENT FLOW IN THE OTHER LOAD CIRCUIT AND DETERMINED BY THE CONDUCTIVITY OF THE RESPECTIVE AMPLIFYING MEANS WHEN SAID FIRST AND SECOND INPUTS RECEIVE A COMMON MODE SIGNAL CONDITION OR A DIFFERENTIAL INPUT SIGNAL CONDITION.