Method and apparatus for recording and reproducing information on and from optical disc
View Patent ↗An apparatus for recording and reproducing an information signal on and from an optical disc includes a memory. The information signal is written into the memory. The information signal is read out from the memory. An optical head generates a laser beam in response to the readout information signal, and applies the laser beam to the optical disc to record the readout information signal on the optical disc. A test signal is recorded on a position of the optical disc near a recording position thereof via the optical head during the writing of the information signal into the memory. The test signal is reproduced from the optical disc. The reproduced test signal is evaluated to generate an evaluation result. An intensity of the laser beam is optimized in response to the evaluation result.
1. A method of optically recording and reproducing information on and from an optical disc including first and second recording layers, the method comprising the steps of:
performing a focus jump between the first and second recording layers;
optically performing test recording with respect to the first recording layer;
optically performing test recording with respect to the second recording layer;
optically recording information on the first recording layer;
optically recording information on the second recording layer; and
recording manufacturer information on a management area of the first recording layer, wherein the manufacturer information is about an apparatus which made the recording.
2. An apparatus for optically recording and reproducing information on and from an optical disc including first and second recording layers, the apparatus comprising:
means for performing a focus jump between the first and second recording layers;
means for optically performing test recording with respect to the first recording layer;
means for optically performing test recording with respect to the second recording layer;
means for optically recording information on the first recording layer;
means for optically recording information on the second recording layer; and
means for recording manufacturer information on a management area of the first recording layer, wherein the manufacturer information is about the apparatus which made the recording.