Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal processing for controlling recording light...
Reexamination Certificate
2004-08-17
2008-12-30
Feild, Joseph (Department: 2627)
Dynamic information storage or retrieval
Binary pulse train information signal
Binary signal processing for controlling recording light...
C369S059120
Reexamination Certificate
active
07471605
ABSTRACT:
An optical disk recording method includes the steps of: providing a multi-pulse chain from a recording wave; independently changing the pulse rise timing and pulse fall timing (pulse width) of the first pulse in the multi-pulse chain in accordance with a preceding space length and a recording mark length; changing the pulse rise timing and pulse fall timing (pulse width) in accordance with a following space length and the recording mark length in a predetermined timing or in independence; and in relation to the smallest mark recorded by irradiation with mono pulse, changing the rise timing in accordance with the preceding space length and the recording mark length and the fall timing (pulse width) in accordance with the following space length and recording mark length, compensating various optical disks different in recording material without change of the fundamental waveform.
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Japanese Office Action, w/partial English translation thereof, issued in Japanese Patent Application No. 2005-261561 dated on Oct. 21, 2008.
Fujita Shinji
Kurokawa Takahiro
Maeda Takeshi
Shiozawa Manabu
Feild Joseph
Haley Joseph
Hitachi , Ltd.
McDermott Will & Emery LLO
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