Sony Expands License for Phase-Change Optical Disc Technology
Stanford R. Ovshinsky, President and CEO of ECD, noted the significance of the announcement, saying, "ECD is proud to continue and expand its long association with Sony, a leader in this field. Technology licensed from ECD is incorporated in all of the major rewritable optical-memory products on or coming to market." The new agreement extends the scope of Sony's original 1985 license to include enabling technology for Sony's present and future rewritable optical-memory products.
ECD's phase-change technology is now used in both of the popular 650-megabyte rewritable optical-memory disk formats, PD and CD-RW, and it will be used in very-high-capacity rewritable DVD disks that Sony will introduce later this year. Rewritable 120mm DVD discs will be available in two data formats: DVD-RW, developed by Sony, and DVD-RAM, developed by Matsushita Electric Industrial Co., Ltd. Both of these high-capacity data formats are extensions of the present PD and CD-RW formats, respectively, and both use ECD's proprietary phase-change rewritable optical-memory technology. Matsushita, Toshiba Corporation, TDK Corporation, Toray Industries, Inc., and others are also ECD licensees.