New Standard Streamlines Operations

摘要

Anew DTV-related standard approved by the Advanced Television Systems Committee (ATSC) will make it easier for broadcasters to transmit electronic program guides, closed-captioning and other data to consumer DTV and HDTV sets. The new standard, PMCP (Program- ming Metadata Communication Protocol), complements a current DTV standard, PSIP (Program and System Information Protocol). Properly implemented, PSIP allows transmission of program guides, closed-captioning, audio information and virtual channel changing (letting viewers tune to the traditional analog channel, say, WCBS New York, Ch. 2, and "virtually" tune in to its digital assignment, Ch. 56).