OPTICAL INFORMATION RECORDING MEDIUM, REPRODUCTION METHOD, AND REPRODUCTION DEVICE

Title:

OPTICAL INFORMATION RECORDING MEDIUM, REPRODUCTION METHOD, AND REPRODUCTION DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/196264

Kind Code:

A1

Abstract:

If a first reflection rate is defined as the reflection rate calculated from the quantity of reflected light obtained from the longest pit (P1max) or the longest space (S1max) in a first pit row, and a second reflection rate is defined as the reflection rate calculated from the quantity of reflected light obtained from the longest pit (P2max) or the longest space (S2max) in a second pit row, the first pit row is configured so that the first reflection rate is substantially the same as the second reflection rate.

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Inventors:

NAKA TAKAYUKI
YAMADA HIROHISA
YAMAMOTO MASAKI
TAJIMA HIDEHARU
KONISHI MASAHITO

Application Number:

PCT/JP2014/060171

Publication Date:

December 11, 2014

Filing Date:

April 08, 2014

Export Citation:

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Assignee:

SHARP KK (JP)
MEMORY TECH HOLDINGS INC (JP)

International Classes:

G11B7/007; G11B7/24

Domestic Patent References:

WO2009050994A1	2009-04-23
WO2007100139A1	2007-09-07

Foreign References:

JP2007519143A	2007-07-12
JPH1145458A	1999-02-16
JPH06162575A	1994-06-10
JP2009099229A	2009-05-07
JPH01220148A	1989-09-01

Other References: