Patent ID: 6137756
Filing Date: 2000-10-24
Classification: G11B

Abstract:
A method of detecting an occurrence of erroneous recording in recording information to be recorded into a recording medium, wherein the information to be recorded consists of a plurality of information blocks each including a predetermined number of information units each including a predetermined amount of partial information to be recorded; synchronizing information is previously recorded in the recording medium every region into which the partial information is recorded; and positional information is previously recorded in the recording medium every region into which the information to be recorded constituting each information block is recorded, the method comprising the steps of;detecting both the synchronizing information and the positional information from the recording medium;first producing, using the detected synchronizing information, a synchronizing timing signal showing a time at which the synchronizing information is detected;second producing, using the detected positional information, a positional timing signal showing a time at which each information block is assigned to be recorded;counting the synchronizing timing signal in number produced during an interval defined by the successive two positional timing signals; andthird producing a state signal for estimating the occurrence of the erroneous recording on the basis of the counted number of the synchronizing timing signal and the predetermined number of the information unit.