Appeal No. 2002-1674 Application 09/089,901 The claimed invention relates to an apparatus and method for recording on or reproducing information from an optical disk in which groove-shaped groove tracks and land tracks present between the groove tracks are alternately connected to each other in a spiral shape. More particularly, a signal is recorded in both at least one continuous groove track and at least one continuous land track and, thereafter, the signal is reproduced from both the groove track and land track. Control parameters are determined based on a detected quality of the recorded and reproduced signal. Appellants assert (specification, pages 29 and 30) a savings in time and number of disk rotations over the conventional approach in which optimal control settings are obtained separately for the land and groove tracks. Claim 1 is illustrative of the invention and reads as follows: 1. An optional disk apparatus performing either one of recording and reproduction of an optical disk in which groove- shaped groove tracks and land tracks present between the groove tracks are alternately connected to each other in a spiral shape, comprising: a recording and reproduction unit for recording a signal in both at least one continuous groove track and at least one con- tinuous land track, and after recording the signal in both the 2Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007