公开(公告)号：US06567016B1

公开(公告)日：2003-05-20

申请号：US09454143

申请日：1999-12-03

Applicant: Krishnan Rajamani ,  Harley D. Johnson ,  Steven C. Lo ,  John L. Reid ,  Venkatakrishna U. Yellepeddy

Inventor： Krishnan Rajamani ,  Harley D. Johnson ,  Steven C. Lo ,  John L. Reid ,  Venkatakrishna U. Yellepeddy

IPC: H03M1347

CPC classification number: G06F3/0231

Abstract: A wireless keyboard may be provided with a guard protocol which prevents unintended typematics. An alive signal may be periodically generated to advise a host processor-based system that the keyboard communication link is still effective. If the host processor-based system receives a key make signal but does not receive a break signal or an alive signal, the processor-based system may deduce that the link has gone inactive, and may generate its own break signal. This avoids unnecessary power consumption and unnecessary typematics.

Abstract translation: 无线键盘可以被提供有防止意外的异常的保护协议。 可以周期性地产生活动信号以建议基于主机处理器的系统键盘通信链路仍然有效。 如果基于主机处理器的系统接收到键信号但不接收到中断信号或活动信号，则基于处理器的系统可以推断链路已经不活动，并且可以产生其自己的中断信号。 这避免了不必要的电力消耗和不必要的分类。