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    Keystroke queueing system
    1.
    发明授权
    Keystroke queueing system 失效
    击键排队系统

    公开(公告)号：US4410957A

    公开(公告)日：1983-10-18

    申请号：US208623

    申请日：1980-11-20

    申请人： William C. Cason ,  Jan W. Snyder

    发明人： William C. Cason ,  Jan W. Snyder

    IPC分类号： G06F3/02 ,  B41J5/28 ,  B41J25/02

    CPC分类号： B41J25/02 ,  B41J5/28

    摘要： A keyboard access system is provided for interfacing a keyboard and the programs of a text processing machine. The keyboard has typamatic function keys, i.e., nontypamatic keystroke information is generated by the keyboard upon depression of a key and, after a short delay, additional typamatic keystroke information is generated as long as the key is held down at a constant rate. The keystroke information represents a key on the keyboard and may also represent the meaning of the key as determined by the state of one or more prefix keys. A keystroke queue is provided for storing keystroke information passing through the keyboard access system. If the keystroke information entered into the keyboard access system is not typamatic, the system will enqueue the information in the keystroke queue and generate an audio feedback signal when the keystroke queue is not full. If the keystroke information is typamatic, the keystroke information will be compared to a table of valid typamatic function keys. If a comparison does not exist, the keystroke information is discarded. If a comparison does exist and the meaning of the key is acceptable, the keystroke information is enqueued if the preceding keystroke enqueued is no longer stored in the keystroke queue and discarded if the preceding keystroke is enqueued and currently stored in the keystroke queue and also represents the key to prevent excess information from being stored in the keystroke queue. This prevents operator overrun while using keys such as the vertical and horizontal cursor. In addition, the provision of a slow typamatic function rate permits the operator to read the text on a display while using a vertical cursor key.

    摘要翻译： 键盘接口系统用于连接键盘和文本处理机的程序。 键盘具有标准功能键，即按键时由键盘产生不喜欢的按键信息，并且在短暂的延迟之后，只要键以恒定的速率被按下，就产生附加的类型键击信息。 按键信息表示键盘上的键，并且还可以表示由一个或多个前缀键的状态确定的键的含义。 提供了一个击键队列来存储通过键盘访问系统的按键信息。 如果输入到键盘接入系统的按键信息不是typamatic，则系统将排队击键队列中的信息，并在击键队列未满时产生音频反馈信号。 如果击键信息是typamatic，则按键信息将与有效的typamatic功能键表进行比较。 如果不存在比较，则将按键击信息被丢弃。 如果比较确实存在并且密钥的含义是可接受的，则如果先前击中的键击不再存储在击键队列中并且如果先前的击键排队并且当前存储在击键队列中并且代表 防止多余信息存储在击键队列中的关键。 这可以防止操作员在使用垂直和水平光标等键时超程。 另外，提供缓慢的标准功能速率允许操作者在使用垂直光标键的同时在显示器上读取文本。