Access control logic for video terminal display memory
    4.
    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
    5.
    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。

    Row address linking control system for video display terminal
    6.
    发明授权
    Row address linking control system for video display terminal 失效
    视频显示终端的行地址链接控制系统

    公开(公告)号:US4249172A

    公开(公告)日:1981-02-03

    申请号:US72500

    申请日:1979-09-04

    IPC分类号: G06F3/153 G09G5/00 G09G5/22

    CPC分类号: G09G5/222

    摘要: A logic control system for a video display terminal is disclosed for accommodating vertically and horizontally varying entry points to a video memory to acquire first character bytes of rows of video information for display on a CRT screen. Dynamically changeable display page snapshots of the video memory, and the formation of display pages from randomly located rows of video information within the video memory are thereby provided.

    摘要翻译: 公开了一种用于视频显示终端的逻辑控制系统,用于将垂直和水平变化的入口点容纳到视频存储器中,以获取用于在CRT屏幕上显示的视频信息的行​​的第一字符字节。 因此,提供了视频存储器的动态可变显示页面快照以及从视频存储器内的随机位置的视频信息行形成显示页面。

    Key switch assembly
    8.
    发明授权
    Key switch assembly 失效
    钥匙开关总成

    公开(公告)号:US4845319A

    公开(公告)日:1989-07-04

    申请号:US131100

    申请日:1987-12-10

    IPC分类号: H01H13/70

    摘要: A key switch assembly for direct mounting on a PCB or similar substrate. The key switch has a body with depending mounting pin having retainers thereon to secure the key switch at apertures in the substrate. The key switch body has a hinged key and includes a snappable dome moveable from a non-actuated position to an actuated position in direct contact with conductive elements in the substrate by manual depression of a key.

    摘要翻译: 用于直接安装在PCB或类似基板上的钥匙开关组件。 钥匙开关具有主体,其具有在其上具有保持器的悬挂安装销,以将钥匙开关固定在基板中的孔处。 钥匙开关主体具有铰接键并且包括可从非致动位置移动到致动位置的可触摸顶篷,其通过手动按压键直接接触基板中的导电元件。

    Key switch assembly
    9.
    发明授权
    Key switch assembly 失效
    钥匙开关总成

    公开(公告)号:US4582967A

    公开(公告)日:1986-04-15

    申请号:US663488

    申请日:1984-10-22

    IPC分类号: H01H13/705 H01H13/14

    摘要: A key switch assembly for interposition between a PCB and a cover plate for actuating a contact element such as a snap dome. The key switch includes a body having a cantilever actuator arm hingedly secured to the body. The body is located with respect to the cover plate by means of an upwardly extending dowel pin. The underside of the actuator arm carries a generally cylindrical striker element which when the arm is depressed engages the snap dome in line contact. The upper surface of the actuator arm has a mounting projection which projects through an aperture in the cover plate and is adapted to receive a key cap. Manual pressure applied to the key cap will cause the actuator arm to pivot about hinge section bringing the striker element into contact with the snap dome.

    摘要翻译: 用于插入PCB和盖板之间的键开关组件,用于致动接触元件,例如卡形顶盖。 钥匙开关包括具有铰链地固定到主体上的悬臂致动器臂的主体。 主体通过向上延伸的定位销相对于盖板定位。 致动器臂的下侧带有大致圆柱形的撞击元件,当臂被压下时,该卡扣圆顶以线接触方式接合。 致动器臂的上表面具有突出通过盖板中的孔的安装突起,并且适于接收钥匙盖。 施加到钥匙盖上的手动压力将使致动器臂绕铰链部分枢转,使得撞针元件与卡扣圆顶接触。

    Dual CRT control unit synchronization system
    10.
    发明授权
    Dual CRT control unit synchronization system 失效
    双CRT控制单元同步系统

    公开(公告)号:US4342989A

    公开(公告)日:1982-08-03

    申请号:US34833

    申请日:1979-04-30

    CPC分类号: G09G5/12

    摘要: A logic control system in a video display terminal is disclosed for synchronizing the operation of dual, asynchronously operating CRT control unit semiconductor chips to accommodate a substantially increased number of visual attributes per display row with minimal effect on data character transfer rates.

    摘要翻译: 公开了一种视频显示终端中的逻辑控制系统,用于同步双异步操作的CRT控制单元半导体芯片的操作,以适应每个显示行显着增加的视觉属性数量,同时对数据字符传输速率的影响最小。