Apparatus for recording information in information recording...

Details Apparatus for recording information in information recording... Apparatus for recording information in information recording...

2007-11-06

2007-11-06

Hindi, Nabil (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing for controlling recording light...

C369S275300

Reexamination Certificate

active

10850366

ABSTRACT:
A multi pulse section30is generated in the mark forming portion corresponding to a mark21having a length nTw (n≧=2), where Tw represents a reference clock cycle. The multi pulse section30consists 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 pulse35having the power level c (c<a) is generated immediately after the multi pulse section30. A bias section36having the power level d (c<d<a) is generated between the heat blocking pulse35and a succeeding multi pulse section30. The bias section36corresponds to a space22. The time length tc of the heat blocking pulse35is: tc≧Tw. With this arrangement, information can be precisely recorded in and reproduced from a WORM type information recording medium.

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