Hologram information recording medium and hologram information recording/reproducing device
Номер патента: EP1862870A4
Опубликовано: 23-07-2008
Автор(ы): Naoyuki Tokuchi, Yoshihiro Someno
Принадлежит: Alps Electric Co Ltd
Опубликовано: 23-07-2008
Автор(ы): Naoyuki Tokuchi, Yoshihiro Someno
Принадлежит: Alps Electric Co Ltd
Реферат: [PROBLEMS] To provide a hologram information recording medium and a hologram information recording/reproducing device capable of accurately reproducing data multiplexed on a recording medium regardless of an affect from the external environment. [MEANS FOR SOLVING PROBLEMS] Considering expansion/contraction of a recording medium (3), multiplex parameters are modified in one recording region (31) of the recording medium (3) and a plurality of the same information groups are recorded substantially in the same region. That is, in the one recording region (31) of the recording medium (3), data groups A to D are recorded while varying a laser wavelength λ. More specifically, the data groups A to D are recorded in one recording region as three groups: data group G1 having data A1, data B1, data C1, data D1; data group G2 having data A2, data B2, data C2, data D2; and data group G3 having data A3, data B3, data C3, data D3.
Hologram recording/reproducing device, method thereof, and holographic recording medium
Номер патента: US20100039918A1. Автор: Tomiji Tanaka. Владелец: Sony Corp. Дата публикации: 2010-02-18.