Patent ID: 6400653
Filing Date: 2002-06-04
Classification: G11B

Abstract:
An information recording apparatus to record information on a recording medium recorded with an address mark to identify which of two addresses is an address for groove or land, comprising:a detector disposed to detect said address mark; and a recorder disposed to record said information on said recording medium in synchronization with said detected address mark; wherein said detector includes,an optical head including a laser disposed to direct a beam upon said recording medium and outputting an address mark signal in response to said address mark; and an address mark synchronous signal generator disposed to generate an address mark synchronous signal in synchronization with said address mark in response to said address mark signal, said recorder includes, a magnetic head; a magnetic head driving circuit disposed to drive said magnetic head in synchronization with said address mark synchronous signal; and a laser driving circuit disposed to drive said laser in synchronization with said address mark synchronous signal; and wherein said address mark is recorded by forming a wobble on at least one of sidewalls of a groove,said optical head outputs a wobble signal in response to said wobble, said detector further includes a phase synchronizing circuit disposed to generate a clock signal in synchronization with said wobble in response to said wobble signal; and a synchronizing circuit disposed to synchronize said clock signal with said address mark synchronous signal, said magnetic head driving circuit drives said magnetic head in response to said synchronized clock signal, and said laser driving circuit drives said laser in response to said synchronized clock signal.