公开(公告)号：US4387365A

公开(公告)日：1983-06-07

申请号：US264108

申请日：1981-05-15

申请人： Raymond J. Berry ,  Ken R. Linkhart ,  Edward J. Parker

发明人： Raymond J. Berry ,  Ken R. Linkhart ,  Edward J. Parker

IPC分类号： G01S7/539 ,  G01S7/298 ,  G01S7/531 ,  G06T1/00 ,  H04N7/01 ,  H03K13/24

CPC分类号： G01S7/531 ,  G01S7/298

摘要： A digital scan converter is disclosed wherein signal information supplied by a sector scanning surveillance system relative to a polar coordinate system is converted to a signal for driving a television-type display or other Cartesian coordinate device by: (a) sampling the signal associated with each consecutive scanning path of the surveillance system at a rate determined by the azimuthal angle that defines the scanning path of interest; (b) storing each set of signal samples as a column of data in a rectangular memory array; (c) accessing the stored data on a row-by-row basis; and (d) utilizing a previously determined mapping strategy to cause each accessed signal sample to form a segment of a line of display within the Cartesian-formulated display devices so that the length of the segment formed by each signal sample is determined by the row and column address of the storage location that is associated therewith when forming a television compatible signal, each signal sample dictates video signal level during a portion of a corresponding horizontal sweep period that is determined by the mapping strategy.

摘要翻译： 公开了一种数字扫描转换器，其中由扇区扫描监视系统相对于极坐标系提供的信号信息被转换为用于驱动电视型显示器或其他笛卡尔坐标装置的信号，其方法是：（a）对与每个 以由限定感兴趣的扫描路径的方位角确定的速率的监视系统的连续扫描路径; （b）将每组信号样本作为数据列存储在矩形存储器阵列中; （c）逐行访问存储的数据; 以及（d）利用先前确定的映射策略来使每个被访问的信号样本在笛卡尔配方的显示设备内形成显示行的一段，使得由每个信号样本形成的段的长度由行和 在形成电视兼容信号时与其相关联的存储位置的列地址，每个信号样本在由映射策略确定的相应的水平扫描周期的一部分期间指定视频信号电平。