Access control logic for video terminal display memory
    1.
    发明授权
    Access control logic for video terminal display memory 失效
    视频终端显示存储器的访问控制逻辑

    公开(公告)号:US4462028A

    公开(公告)日:1984-07-24

    申请号:US235819

    申请日:1981-02-19

    IPC分类号: G09G5/22 G09G1/06

    CPC分类号: G09G5/222

    摘要: A logical control system is provided for accommodating both single and double byte accesses to a video terminal system display memory to supply video character and visual attribute data to a video screen without limiting the quantity of visual attributes and without the needless occupation of video screen character positions by visual attribute characters.

    摘要翻译: 提供了一种逻辑控制系统,用于容纳对视频终端系统显示存储器的单字节和双字节访问,以将视频字符和视觉属性数据提供给视频屏幕,而不限制视觉属性的数量,并且不需要占用视频屏幕字符位置 通过视觉属性字符。

    CRT Refresh memory system
    2.
    发明授权
    CRT Refresh memory system 失效
    CRT刷新内存系统

    公开(公告)号:US4418343A

    公开(公告)日:1983-11-29

    申请号:US235820

    申请日:1981-02-19

    IPC分类号: G09G1/16 G09G5/00 G09G1/02

    CPC分类号: G09G5/001

    摘要: A logic memory control system for accommodating plural read/write requests to a video terminal display memory is provided without the need for multiplexing common busses shared by the video terminal logic devices accessing the display memory, or for compromising video terminal data transfer rates.

    摘要翻译: 提供了一种用于将多个读/写请求容纳到视频终端显示存储器的逻辑存储器控制系统,而不需要复用由访问显示存储器的视频终端逻辑设备共享的公共总线,或用于损害视频终端数据传输速率。

    Hardware-firmware CRT display link system
    8.
    发明授权
    Hardware-firmware CRT display link system 失效
    硬件固件CRT显示链接系统

    公开(公告)号:US4414645A

    公开(公告)日:1983-11-08

    申请号:US296932

    申请日:1981-08-27

    IPC分类号: G09G1/02 G09G5/42 G06F3/153

    CPC分类号: G09G5/42 G09G1/02

    摘要: Each row of video information in a display memory includes a linking character code followed by address codes representative of the address location in such display memory of a first data character of a next row of video information displayed on the CRT screen. Both row insertions and deletions may be accommodated by changing address codes under firmware control without requiring the complete rewrite of video information stored in the display memory.

    摘要翻译: 显示存储器中的每行视频信息包括链接字符代码,随后是代表显示在CRT屏幕上的下一行视频信息的第一数据字符的这种显示存储器中的地址位置的地址代码。 可以通过在固件控制下改变地址代码来适应行插入和删除,而不需要完全重写存储在显示存储器中的视频信息。