专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5483289A Data slicing circuit and method 失效
标题翻译：数据切片电路及方法
公开(公告)号：US5483289A
公开(公告)日：1996-01-09
申请号：US171744
申请日：1993-12-22
申请人： Masakazu Urade , Hisao Kobayashi , Yukihiro Yagi , Katsuhiko Hashimoto , Sachiko Nishii
发明人： Masakazu Urade , Hisao Kobayashi , Yukihiro Yagi , Katsuhiko Hashimoto , Sachiko Nishii
IPC分类号： H04N7/025 , H04N7/03 , H04N7/035 , H04N7/08
CPC分类号： H04N7/0355
摘要： A circuit and method of data slicing a television signal comprises: an extractor 2 for extracting a specific component from the television signal of analog form; a slicer 3 for slicing the specific component of the television signal produced by the extractor 2 and converting it to its digital form; a decoder 4 for decoding an output of the slicer 3 for display; an initial value storage 10 for storing an initial value of the slice level; slice level controllers 7 and 8 for varying the initial slice level at a predetermined rate; a signal detector 11 for examining whether or not the digitized specific component from the slicer 3 is a desired multiplex signal; a temporary slice level memory 13 for storing the upper and lower levels of the desired multiplex signal detected by the signal detector 11; a calculator 9 for calculating an optimum value of the slice level from the upper and lower levels of the multiplex signal stored in the temporary slice level memory 13; a slice level storage 6 for storing the optimum slice level calculated by the calculator 9; and a controller 14 for selectively feeding the slicer 3 with the optimum slice level retrieved from either the slice level storage 6 or the slice level controllers 7 and 8 according to a resultant judgment of the signal detector 11.
摘要翻译：电视信号数据分片电路和方法包括：提取器2，用于从模拟形式的电视信号中提取特定分量; 切片机3，用于对提取器2产生的电视信号的特定分量进行切片，并将其转换为数字形式; 解码器4，用于解码限幅器3的输出以进行显示; 用于存储限幅电平的初始值的初始值存储器10; 用于以预定速率改变初始限幅电平的限幅电平控制器7和8; 用于检查来自限幅器3的数字化特定分量是否是期望的多路复用信号的信号检测器11; 临时限幅电平存储器13，用于存储由信号检测器11检测到的期望多路复用信号的上和下电平; 计算器9，用于根据存储在临时限幅电平存储器13中的多路复用信号的上限和下限来计算限幅电平的最佳值; 用于存储由计算器9计算的最佳限幅电平的限幅电平存储器6; 以及控制器14，用于根据信号检测器11的结果判断，从限幅电平存储器6或限幅电平控制器7和8中选择性地馈送具有最佳限幅电平的限幅器3。

IPRDB

热门服务

关于我们

友情链接

联系方式