The optical disc, the optical disc with multiple layers, method for recording essential information in a optical disc and method for reproducing information from an optical disk essential

摘要

"The optical disc, the optical disc has multiple layers, method for recording essential information in a optical disc and method for reproducing information from an optical disk is essential.An optical disc and methods for recording key information input and the reproduction of the essential information from an optical disc are provided.The optical disc includes a configuration diagram pattern of crystalline and amorphous marks the storage of essential information.The recording method of essential information involves: heat an amorphous recording layer above the temperature of crystallization by irradiating a beam according to a signal fotoeletricaMind converted; and cooling slowly the recording layer is heated to the temperature of crystallization or below it to form a configuration diagram pattern of crystalline and amorphous marks.The reproduction method of essential information involves: irradiating a beam on a configuration diagram pattern of crystalline and amorphous marks in which the essential information of the optical disc esAll recorded; receiving the beam reflected from the configuration diagram pattern of crystalline and amorphous marks and convert the received fotoeletricamente beam to detect a signal; filtering the signal.Detected by a filter is high; and reproducing the essential information of the optical disc from the filtered signal.The essential information can be recorded in a recordable optical disk through phase shift using an already existing equipment boot disk after the deposition of a recording layer.Before initialization of the optical disc. Therefore, additional equipment and recording processes are not necessary, and do not occur damage caused by high energy laser in the optical disc.