| 摘要 |
PROBLEM TO BE SOLVED: To provide a writing control method of the optical disk information capable of obtaining a reproducing signal having a satisfied C/N ratio by keeping the exact recording bit shape even when the high density writing is performed. SOLUTION: An inputted CD signal is delayed by a 1st delay circuit 1 in the predetermined range, and the CD signal delayed by a 2nd delay circuit 2 is delayed further in the predetermined range, then a start part control signal, middle part control signal and finish part control signal are produced from output signals of these 1st, 2nd delay circuits 1, 2 by a control signal generating circuit 3. Then, in a pulse forming circuit 4, the inputted CD signal is divided into three parts such as the start part, middle part and finish part by each of these control signals to generate the pulses respectively corresponded thereto, and the space length just before the inputted CD signal is recognized by a pulse train control circuit 10, then the width or amplitude of each pulse is controlled in accordance with the space length.
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