光盘产品的消费市场日臻完备。索尼和先锋公司正在采用新型光盘播放机。索尼公司为了保持与小型“ Walkman”袖珍结构的一致性,已设计了一种使用4.7英寸塑料光盘和二极管激光器的便携式音频播放机。先锋公司的新产品打算供家庭立体声和电视市场使用。它兼有小型光盘声频播放机和12英寸视频盘播放机。索尼的小型播放机以一块甚大规模集成电路片控制数字功能。光学系统减少到以前播放机的三分之一。这两个设计的完成有可能制作尺寸为1.5×5×5.25英寸,重量不到 CD-ROM products, the consumer market is perfect. Sony and Pioneer are using the new compact disc player. To maintain consistency with the compact “Walkman” pocket structure, Sony has designed a portable audio player that uses a 4.7-inch plastic optical disc and a diode laser. Pioneer’s new product is intended for use in the home stereo and television markets. It has both a compact disc audio player and a 12-inch video disc player. Sony’s small player controls digital features with a very large integrated circuit chip. The optical system is reduced to one-third of the previous player. The completion of these two designs is possible to produce a size of 1.5 × 5 × 5.25 inches, weight less than