Invention Grant
US08854938B2 Optical recording medium, manufacturing method for optical recording medium 有权
光记录介质,光记录介质的制造方法

Optical recording medium, manufacturing method for optical recording medium
Abstract:
An optical recording medium and a manufacturing method for forming the optical recording medium is provided.The optical recording medium includes a bar code-shaped reflection pattern that includes high reflection rate regions and low reflection rate regions and information is recorded with the bar code-shaped reflection pattern. The low reflection rate region is formed with pit strings. The high reflection rate region and the low reflection rate region are formed to satisfy: S+M/2≦0.6H, where a signal level of a reproduction signal obtained from a reflection light in the high reflection rate region is denoted as “H”, a signal level of a reproduction signal obtained from a reflection light in the low reflection rate region is denoted as “S”, and a degree of modulation of the reproduction signal obtained from the reflection light in the low reflection rate region is denoted as “M”.
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