标准号:ANSI/CEA 608-E-2008
中文标准名称:线路21数据服务
英文标准名称:Line 21 Data Services
标准类型:M60
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:M60
国际标准分类号:33.170
适用范围:This is a technical standard and guide for using/ providing Closed Captioning services or other data services embedded in line 21 of the vertical blanking interval of the NTSC video signal. It includes a provision for encoding equipment and/or decoding equipment to produce such material as well as manufacturers of television receivers which are required to include such decoders in their equipment. It is also a usage guide for producing and distributing material using such equipment.