发明申请
US20100060961A1 RECORDING/PLAYBACK APPARATUS, RECORDING APPARATUS, PLAYBACK APPARATUS, RECORDING/PLAYBACK METHOD, RECORDING METHOD, AND PLAYBACK METHOD
失效
记录/回放装置，记录装置，回放装置，记录/回放方法，记录方法和回放方法
- 专利标题： RECORDING/PLAYBACK APPARATUS, RECORDING APPARATUS, PLAYBACK APPARATUS, RECORDING/PLAYBACK METHOD, RECORDING METHOD, AND PLAYBACK METHOD
- 专利标题（中）： 记录/回放装置，记录装置，回放装置，记录/回放方法，记录方法和回放方法
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申请号： US12549614申请日： 2009-08-28
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公开(公告)号： US20100060961A1公开(公告)日： 2010-03-11
- 发明人: Kenji TANAKA
- 申请人： Kenji TANAKA
- 申请人地址： JP Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JP Tokyo
- 优先权： JPJP2008-229639 20080908
- 主分类号： G03H1/14
- IPC分类号： G03H1/14
摘要：
A recording/playback apparatus includes a light-generating and intensity-modulating section for generating signal light and reference light to be shined on a hologram recording medium and a phase modulating section for performing phase modulation on the signal light and the reference light on the basis of a pixel unit by using the first to nth phase modulation levels. For the phase modulation on the reference light, all pixels corresponding to the reference light are divided and set using random phase units, each having a predetermined pixel array pattern having at least two pixels, the number of pixels corresponding to each of the first to nth phase modulation levels in each random phase unit is common to the random phase units, and the array pattern of the pixels corresponding to the first to nth phase modulation levels is random for each random phase unit.