Apparatus for recording information in information recording medium, information recording medium, method for recording information in information recording medium, program for recording information in information recording medium, and program product

摘要

A multi pulse section (30) is generated in the mark forming portion corresponding to a mark (21) having a length nTw (n‰§2), where Tw represents a reference clock cycle. The multi pulse section (30) consists of pulses of the number (n-1) each having the power level a, and pulses of the number (n-2) each having the power level b (b<a), each of which is formed between the adjoining pulses having the power level a. Further, a heat blocking pulse (35) having the power level c (c<a) is generated immediately after the multi pulse section (30). A bias section (36) having the power level d (c<d<a) is generated between the heat blocking pulse (35) and a succeeding multi pulse section (30). The bias setion (36) corresponds to a space (22). The time length tc of the heat blocking pulse (35) is: tc ‰§ Tw. With this arrangement, information can be precisely recorded in and reproduced from a WORM type information recording medium.