Patent ID: 6519715
Filing Date: 2003-02-11
Classification: G11B

Abstract:
A data recording and reproducing apparatus, comprising:a recording media; a controller coupled to an external processing unit; a recording and reproducing head controlled by the controller for recording information on the recording media and for reproducing information from the recording media; a processor coupled to the controller; a read/write amplifier for exchanging recording and reproducing information with the recording and reproducing head; a recording circuit for outputting recording information to the read/write amplifier; and a reproducing circuit, including a memory, for receiving as an input a signal from the read/write amplifier, detecting reproducing information in the signal from the read/write amplifier and supplying as an output a signal representing the detected reproducing information, wherein the memory stores the signal from the read/write amplifier, and wherein the reproducing circuit includes a function for outputting a signal to the processor in accordance with a predetermined condition, the signal changing a condition of signal processing in the reproducing circuit.