| 摘要 |
Test-recording signals are recorded onto an optical disc by variously varying the intensity values of erasing power and bottom power as well as writing power of a laser light beam, in order to determine a combination of optimum intensity values of the writing power and erasing power, of the writing power and bottom power or of the writing power, erasing power and bottom power. Then, actual-recording signals are recorded in accordance with the thus-determined combination of optimum intensity values. With this arrangement, optimum recording conditions can be constantly provided irrespective of non-uniform and time-varying characteristics of various optical discs used, and it is possible to reliably prevent reproduction errors or failure of reproduction. |
