办事指南

Doubling up

点击量:   时间:2019-03-06 01:02:01

Good news for music and video pirates. Sony and Philips are to make CD recorders that hold twice as much data as a conventional CD. Microchips which let a CD player track tighter data spirals have already been developed. This doubles disc capacity from 650 megabytes to 1.3 gigabytes. So a blank costing less than $1 could hold 2.5 hours of CD-quality music, or hundreds of MP3 recordings, or a feature-length VHS quality movie. Double-density recorders are expected to go on sale within six months. DD recordings will not play back on existing CD players,