Patent ID: 7983126
Filing Date: 2011-07-19
Classification: G11B

Abstract:
1. An optical-information recording apparatus adapted to establish a recording pulse comprising a top pulse, an intermediate pulse and a last pulse based at least in part on a plurality of types of codes and to illuminate laser light based on the established recording pulse thereby recording information to an optical recording media, the apparatus comprising: means for controlling a phase of a recording pit corresponding to a saturation code by regulating at least the top pulse corresponding to the saturation code, wherein the saturation code is a code whose reproduced signal amplitude is saturated; means for controlling the width of the recording pit corresponding to the saturation code by regulating the intermediate pulse in the recording pulse corresponding to the saturation code; means for performing a test recording to the media by changing the intermediate pulse condition of the saturation code while fixing conditions for the top pulse and the last pulse; means for performing a test recording to the media by using a non-saturation code shorter than the saturation code; means for reproducing a result of the test recordings and detecting recording lengths of the saturation and non-saturation codes; and means for determining an intermediate pulse condition of the saturation code depending upon a change tendency of the recording length of the saturation code relative to the recording length of the non-saturation code.