公开(公告)号：US4023027A

公开(公告)日：1977-05-10

申请号：US630389

申请日：1975-11-10

申请人： Lyle R. Strathman ,  Robert A. Bolin ,  Vincent B. Collins ,  Ronald L. Swanson

发明人： Lyle R. Strathman ,  Robert A. Bolin ,  Vincent B. Collins ,  Ronald L. Swanson

IPC分类号： G09G1/10 ,  G06F3/14

CPC分类号： G09G1/10

摘要： A system for generating respective X and Y beam deflection command signals as respective running binary counts in X and Y deflection counters utilizing digital computations based on the straight line expressions Y=X tan .alpha., where .alpha. is the line slope. Relative clock rates are defined by the tan .alpha. relationship therebetween, and, by defining a line as lying in one of eight 45.degree. octants, and a circle as successive points of tangency of a plurality of lines tangent to the circle comprising circumferential segments in eight contiguous ones of the octants, the system effects generation of respective X and Y counts to trace a line of selected length and slope as well as a circle of selected radius utilizing but a single table of tangents for angles between 0.degree. and 45.degree. as the required data storage.

摘要翻译： 利用基于直线表达式Y = Xtanα1的数字计算，在X和Y偏转计数器中产生各自的X和Y光束偏转指令信号作为相应的运行二进制计数的系统，其中α是线斜率。 相对时钟速率由它们之间的tanα关系定义，并且通过将线定义为位于八个45°八分之一中的一行，并且将圆作为与包括八分之一圆周分段的圆相切的多条线的连续切点 连续的八分之一，系统效应产生相应的X和Y计数以追踪选定长度和斜率的一行以及所选择的半径的圆，同时使用0°和45°之间的角度的单个切线表作为 所需数据存储。

公开(公告)号：US3997878A

公开(公告)日：1976-12-14

申请号：US543385

申请日：1975-01-23

申请人： Robert J. Hirvela ,  Robert A. Bolin

发明人： Robert J. Hirvela ,  Robert A. Bolin

IPC分类号： H04J3/16 ,  H04L25/02 ,  G06F7/10

CPC分类号： H04J3/1647 ,  H04L25/0262

摘要： A device for receiving data on a plurality of parallel lines wherein the data on specific ones of said parallel lines occur at different rates. The apparatus utilizes clock information obtained with said data. The apparatus further samples each line at a rate at least as fast as the data on any line can be presented but only places the sampled data in scratch pad memory once for each clock occurrence. Upon completion of assembly of each data word, it is transferred to buffer storage memory. The apparatus as described will eliminate or dump data from prescribed sources by placing all undesired data words in an unaccessed or write only place in buffer storage memory while forwarding the desired data words to their appropriate retrievable places in buffer storage memory. A further feature of this device comprises a section which serializes words in a unique manner wherein complete words are placed in a buffer memory and the output of these words occurs in constant byte sized portions which are individually addressed and applied to a byte sized output serializer.

摘要翻译： 一种用于在多条平行线上接收数据的装置，其中所述平行线上的特定数据的数据以不同的速率发生。 该装置利用用所述数据获得的时钟信息。 该装置进一步以至少与任何行上的数据一样快的速率对每条线进行采样，但是仅在每个时钟发生时将采样数据放置在暂存盘存储器中一次。 在完成每个数据字的汇编后，将其传送到缓冲存储器。 所描述的装置将通过将所有不期望的数据字放置在缓冲存储存储器中的不可访问或只写入位置中，同时将期望的数据字转发到缓冲存储器存储器中其适当的可检索的位置来消除或转储来自指定源的数据。 该装置的另一个特征包括以完全单词被放置在缓冲存储器中的唯一方式来串行化字的部分，并且这些字的输出出现在恒定字节大小的部分中，该部分被单独寻址并应用于字节大小的输出串行器。