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    Visual display unit with character overstrike
    1.
    发明授权
    Visual display unit with character overstrike 失效
    视觉显示单元，具有字符突围

    公开(公告)号：US4740783A

    公开(公告)日：1988-04-26

    申请号：US794900

    申请日：1985-11-04

    申请人： Stephen G. C. Lawrence ,  Brian H. Middleton

    发明人： Stephen G. C. Lawrence ,  Brian H. Middleton

    IPC分类号： G09G5/28 ,  G09G5/22 ,  G09G1/14

    CPC分类号： G09G5/222

    摘要： A visual display unit with character overstrike capability includes a text store in which text is stored in data stream form. A formatter formats the stored text and loads character codes into a refresh buffer which together with a character generator display the characters on a raster scanned cathode ray tube. Control logic responsive to a backspace character combines the bit patterns corresponding to the characters preceding and succeeding the backspace character in a temporary store and then stores the composite bit pattern in the character generator and a pointer thereto in the refresh buffer. The control logic can be inhibited to allow the individual characters constituting the composite character to be displayed individually for editing purposes.

    摘要翻译： 具有字符超行能力的视觉显示单元包括以数据流形式存储文本的文本存储。 格式化器格式化存储的文本并将字符代码加载到刷新缓冲器中，其与字符发生器一起在光栅扫描的阴极射线管上显示字符。 响应于退格字符的控制逻辑组合了与临时存储器中的退格字符之前和之后的字符相对应的位模式，然后将复合位模式存储在字符生成器中，并将指针存储在刷新缓冲器中。 可以禁止控制逻辑以允许构成复合字符的各个字符被单独显示以进行编辑。

    Display terminal
    2.
    发明授权
    Display terminal 失效
    显示终端

    公开(公告)号：US4868782A

    公开(公告)日：1989-09-19

    申请号：US61235

    申请日：1987-06-10

    申请人： Stephen G. C. Lawrence ,  Michael A. McMorran ,  Brian H. Middleton

    发明人： Stephen G. C. Lawrence ,  Michael A. McMorran ,  Brian H. Middleton

    IPC分类号： G06F9/45 ,  G06F3/153 ,  G06F13/00

    CPC分类号： G06F3/153

    摘要： A display terminal of the type which is dependent on a remote processor for its operation and for its main data storage, comprising an interactive language interpreter (24) (e.g. for BASIC), terminal processor, local storage, display and a switch for switching between a session (90) associated with the remote processor and a session (91) dedicated to servicing the interactive language interpreter (24). During an interactive language session screens of data associated with the host session may be displayed and then saved which enables host data to be processed using user programs in the interactive language.

    摘要翻译： 一种依赖于远程处理器进行操作和主数据存储的显示终端，包括交互式语言解释器（24）（例如用于BASIC），终端处理器，本地存储器，显示器和用于在 与远程处理器相关联的会话（90）和专用于维护交互式语言解释器（24）的会话（91）。 在交互式语言会话期间，可以显示与主机会话相关联的数据屏幕，然后被保存，这使得能够使用交互式语言的用户程序来处理主机数据。

    Text processing apparatus with editing of stored document at each keystroke
    3.
    发明授权
    Text processing apparatus with editing of stored document at each keystroke 失效
    文本处理装置，在每个按键处编辑存储文件

    公开(公告)号：US4464730A

    公开(公告)日：1984-08-07

    申请号：US273273

    申请日：1981-06-12

    申请人： Stephen G. Lawrence ,  Brian H. Middleton

    发明人： Stephen G. Lawrence ,  Brian H. Middleton

    IPC分类号： G06F3/12 ,  G06F3/02 ,  G06F17/21 ,  G06F17/22 ,  G06F17/24 ,  G06K15/00 ,  G09G1/00 ,  G09G5/22 ,  G09G5/32 ,  G06F9/00

    CPC分类号： G09G1/00 ,  G06F17/211 ,  G06F17/2205 ,  G06F17/24

    摘要： A text terminal in which a text stream received on a communication link is segmented by a segmenter into chained variable-length segments which are stored in a random access text store. Each segment can contain at most one extended formatting command. Segments have slack areas to allow the subsequent insertion of text. A text editor receives keystroke signals from a keyboard and modifies the stored text stream, new segments being created as necessary for extended formatting commands or when slack areas are full. An interpreter/formatter is invoked when a received text stream has been segmented or when the stored text stream has been modified to format and map the stored text stream into a refresh buffer driving a cathode ray tube (CRT) display. The interpreter/formatter maintains a status index with condensed versions of the extended formatting commands stored in the text stream. Formatting is inhibited by the editor if it receives a keystroke requiring modification of the stored text. After editing segmented text is desegmented by a desegmenter and returned to the host along a communication link in the form in which it was received. Preferably, the terminal is implemented with a microprocessor which can also control standard data entry applications as well as text processing.

    摘要翻译： 其中在通信链路上接收的文本流被分段器分段成存储在随机访问文本存储器中的链式可变长度段的文本终端。 每个段最多可以包含一个扩展格式化命令。 分段有松弛的区域，以便随后插入文本。 文本编辑器从键盘接收击键信号并修改存储的文本流，根据需要为扩展格式化命令创建新段，或者当松弛区域已满时。 当接收到的文本流已经被分割时或者当存储的文本流被修改以格式化并将存储的文本流映射到驱动阴极射线管（CRT）显示器的刷新缓冲器时）时，调用解释器/格式化器。 解释器/格式器维护一个状态索引，其中存储在文本流中的扩展格式化命令的浓缩版本。 如果接收到需要修改存储的文本的按键，编辑器将禁止格式化。 在编辑分段文本之后，解密文本将被解析器分解，并以通信链接的形式返回给主机。 优选地，终端用微处理器实现，微处理器还可以控制标准数据输入应用以及文本处理。