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既阅读ＤＶＤ又阅读ＣＤ的双聚焦光学头日本主要电子学公司正在重新设计既能阅读ＣＤ又能阅读数字视盘ＤＶＤ的双聚焦光学头。他们的目标是利用ＣＤ已成熟市场的优势以及在１２ｃｍ光盘上能存储２７０ｍｉｎ时间全活动电视的ＤＶＤ的有前途市场在１９９６年投放双用途播放...
Dual-focus optical head that reads both DVDs and CDs Major Japanese electronics companies are redesigning dual-focus optical heads that read both CDs and digital DVDs. Their goal is to take advantage of the proven markets of CDs and the promising market for DVDs with 270mm full-time TV on a 12cm compact disc for dual-purpose playback in 1996 ...