公开(公告)号：US3798610A

公开(公告)日：1974-03-19

申请号：US3798610D

申请日：1972-12-20

Applicant: IBM

Inventor： BLISS B ,  DERVAN J ,  GRIFFITH L ,  VOGEL N ,  PUNG B ,  THORPE R

IPC: G06F3/147 ,  G06F3/023 ,  G06F3/048 ,  G06F3/153 ,  G09G5/40 ,  G09G5/42 ,  G06F3/04 ,  G06F3/14 ,  H04L5/00

CPC classification number: G06F3/153 ,  G06F3/04892 ,  G09G5/40 ,  G09G5/42

Abstract: Time multiplexed signal communications between a host computer and subordinate data processing terminals include coded and noncoded information. Coded information originated by the host includes entry-separation marker signals. Individual marker signals are used at terminals to control access to associated particular time spaces of the multiplex frame. The host signals are serially stored by addressed terminals in the time sequence of transmission. The stored marker signals are protected from modification at terminals and control write-in access to storage spaced allocated to the associated time segments; thereby controlling terminal editing operations. Edited information in unprotected terminal storage spaces is easily segregated -- e.g., for compact transmission to the host -- by reference to the stored marker signals. When the non-coded signals comprise raster scanned picture information displayable at terminal display apparatus the markers are used to generate cursors indicating edit-accessible positions (e.g., character entry spaces). A distinct displaced cursor provides unique indication of the space next accessible for entry in a normal keying (i.e., typing) sequence.

Abstract translation: 主计算机与下属数据处理终端之间的时间复用信号通信包括编码和非编码信息。 由主机发起的编码信息包括入口分离标记信号。 在终端处使用单个标记信号来控制对多路复用帧的相关特定时间空间的访问。 主机信号按发送时间顺序由寻址终端串行存储。 存储的标记信号被保护以免在终端处的修改，并且控制对分配给相关联的时间段的间隔的写入访问; 从而控制终端编辑操作。 未保护的终端存储空间中的编辑信息容易地被分离 - 例如，通过参考所存储的标记信号来简单地传输到主机。 当非编码信号包括可在终端显示装置处显示的光栅扫描图像信息时，标记用于产生指示编辑可访问位置（例如，字符输入空格）的光标。 不同的移位光标提供了下一个可访问的空间的唯一指示，以便在正常密钥（即打字）序列中输入。