Patent ID: 6088742
Filing Date: 2000-07-11
Classification: G06F

Abstract:
A command queuing apparatus of an optical data reproduction system including a microcontroller, the command queuing apparatus comprising:(a) an intention data detection unit that: receives intention data from a computer indicating that an incoming command is to be sent to the optical data reproduction system; and outputs a detection signal according to the intention data;(b) a command storage unit comprising a plurality of buffers including a receiving buffer and a sending buffer, wherein the receiving buffer and the sending buffer may be identical, wherein the command storage unit:in response to receiving a write signal, stores the incoming command from the computer in the receiving buffer among the buffers; andin response to receiving a read signal, retrieves an outgoing command from the sending buffer among the buffers and sends the outgoing command to the microcontroller; and(c) a wait state control unit which: outputs the write signal in response to receiving the detection signal from the intention data detection unit and a command write signal which indicates that the computer is sending the incoming command for the optical data reproduction system; and outputs the read signal in response to a command read signal generated by the microcontroller.