CNET GLOSSARY: Terms for the techie
A perceived chink in the armor protecting copyrighted content from unauthorized distribution--for example, over the Internet. Currently HDTV and other high-bandwidth content can be converted from analog to digital format and distributed widely. The MPAA wants to "plug" the analog hole by placing watermark detection capability in analog-to-digital converters (ADCs), which convert analog audio and video into digital form.
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