Patent ID: 6292321
Filing Date: 2001-09-18
Classification: G11B

Abstract:
A magnetic recording device, comprising:a magnetic head, wherein said magnetic head comprises a write head and a read head; anda drive circuit, wherein said drive circuit comprises:a write driver which inputs write data and outputs a corresponding writing current to said write head to store information onto a magnetic disk based on a write current setting signal;a read preamplifier which supplies a bias current to said read head to sense information stored on said magnetic disk and which amplifies said information as output data based on a bias current setting signal;a write predriver which inputs a write data signal and a write mode signal and which supplies said write data to said write driver based on a write mode signal;a read postamplifier which inputs said output data and a read mode signal and which amplifies said output data to produce a read data signal based on said read mode signal;a control circuit which inputs a control signal as serial input data and generates said read mode signal when said control signal identifies a read mode of said drive circuit, generates said write mode signal when said control signal identifies a write mode, and outputs a current value signal based on said control signal; anda current setting circuit which inputs said current value signal and outputs said write current setting signal and said bias current setting signal based on said current value signal.