Patent ID: 7265926
Filing Date: 2007-09-04
Classification: G11B,H03F

Abstract:
1. A disk drive data storage system, comprising: a magnetic disk; a head for writing data to the disk; circuitry for providing a first voltage to a first node and a second voltage to a second node, wherein the head is coupled to the first and second nodes such that a data state is written to the disk in response to the first and second voltage, comprising: circuitry for coupling a first biasing signal to the first transistor of the first type during a first time period, and comprising a signal path for the first biasing signal that passes through a base-emitter junction of transistors of both the first and second type; circuitry for coupling a second biasing signal to the first transistor of the second type during the first time period, and comprising a signal path for the second biasing signal that passes through a base-emitter junction of transistors of both the first and second type; circuitry for coupling a third biasing signal to the second transistor of the first type during a second time period that differs from the first time period, and comprising a signal path for the third biasing signal that passes through a base-emitter junction of transistors of both the first and second type; and circuitry for coupling a fourth biasing signal to the second transistor of the second type during the second time period, and comprising a signal path for the fourth biasing signal that passes through a base-emitter junction of transistors of both the first and second type.