首页>
外国专利>
Television transmission system including encoder and decoder compatible with current television standards having a 4:3 aspect ratio
Television transmission system including encoder and decoder compatible with current television standards having a 4:3 aspect ratio
展开▼
机译:电视传输系统,包括与当前电视标准兼容的编码器和解码器,其纵横比为4:3
展开▼
页面导航
摘要
著录项
相似文献
摘要
A television transmission system compatible with current television standard includes a compatible wide aspect ratio television signal containing vacated spatial areas along upper and lower edges of an image defined by lines remaining after lines are separated from groups of successive lines within an image scanning interval. The separated lines are inserted into the vacated spatial areas. A first carrier is modulated with non-active portions of the separated lines, and with the remaining lines. A second carrier is modulated with time expanded active image portions of the separated lines, and is disposed in an upper portion of the television signal frequency spectrum so as to be suppressed in a standard aspect ratio receiver.
展开▼