Apparatus for recording data on optical disk

摘要

A magneto-optical disk recording apparatus of the ZCAV recording type in which tracks are divided in a plurality of zones in the radial direction, comprises a data pattern generator for generating a recording data pattern signal synchronous with a reference clock, a frequency multiplier circuit for multiplying the reference clock by two, an OR gate for outputting a logical sum signal of an output from the multiplier circuit and the reference clock, and a recording pulse generating circuit including an AND gate for turning on/off a recording data pattern using an output from the OR gate as a gate output. With this structure, a recording pulse having a pulse width of 0.75 T with respect to the cycle T of the reference clock is generated synchronous with the reference clock.