Number | Date | Country | Kind |
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5-016113 | Feb 1993 | JPX |
Number | Name | Date | Kind |
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5132953 | Matsubayashi | Jul 1992 | |
5253242 | Satoh et al. | Oct 1993 |
Number | Date | Country |
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4-335212 | Nov 1992 | JPX |
Entry |
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M. Onoue et al., Optical Disk Technique, pp. 230-233, Feb. 10, 1989, "1.8.4. Alternative Area" with partial English translation. |