Patent ID: 7020067
Filing Date: 2006-03-28
Classification: G11B

Abstract:
1. An information recording medium comprising: an information track formed spirally or in coaxial circles; a recordable area for information being prerecorded with a frequency signal and an address signal from an inner circumference of said information track; a first read only area recorded with a frequency signal being recorded as a pit being able to read out a reproduction signal; and a second read only area recorded as a pit being unable to read out a reproduction signal and prerecorded with a frequency signal and an address signal, wherein there existed a boundary between said recordable area and said first read only area and another boundary between said first read only area and said second read only area, and wherein continuity of a tracking error signal is regulated in an area adjacent to said boundary between said recordable area and said first read only area and in another area adjacent to said other boundary between said first read only area and said second read only area.