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1. 发明授权

US5148380A Method and apparatus for conserving power in a data processing system 失效
标题翻译：用于在数据处理系统中保存功率的方法和装置
公开(公告)号：US5148380A
公开(公告)日：1992-09-15
申请号：US573628
申请日：1990-08-27
申请人： Steve Lin , Kent Kao , Robert Hsu
发明人： Steve Lin , Kent Kao , Robert Hsu
IPC分类号： G06F1/24 , G06F1/32
CPC分类号： G06F1/3215 , G06F1/24
摘要： In a battery powered data processing system having an oscillator and a microprocessor connected to the oscillator, the microprocessor has a programmable standby mode and circuit responsive to the standby mode for disabling the oscillator. The system uses a sensor circuit to generate a reset signal to reset the microprocessor from the power down mode when a key is depressed. A signal generator is responsive to signals from the oscillator for disabling the reset signal.

2. 发明授权

US5189543A Infra-red wireless keyboard system 失效
标题翻译：红外无线键盘系统
公开(公告)号：US5189543A
公开(公告)日：1993-02-23
申请号：US615567
申请日：1990-11-19
申请人： Steve Lin , Kent Kao , Robert Hsue
发明人： Steve Lin , Kent Kao , Robert Hsue
IPC分类号： H04B10/10
CPC分类号： H04B10/114
摘要： A communication system comprising a wireless keyboard for emitting infra-red signals, a receiving unit for converting the infra-red signals to an electrical signal, a tuning and amplifying circuit coupled to the receiving unit for tuning and amplifying the electrical signals, a carrier filtering circuit for removing the carrier component of the input signal, a single-shot circuit coupled to the carrier filtering circuit for converting its input signal to a known code wave form, and a microprocessor for receiving the code wave. The invention allows multiple users to operate their wireless keyboards without interference.
摘要翻译：一种通信系统，包括用于发射红外信号的无线键盘，用于将红外信号转换为电信号的接收单元，耦合到接收单元的调谐和放大电路，用于调谐和放大电信号;载波滤波用于去除输入信号的载波分量的电路，耦合到载波滤波电路的用于将其输入信号转换为已知码波形的单稳态电路，以及用于接收码波的微处理器。本发明允许多个用户无干扰地操作其无线键盘。

3. 发明授权

US5146567A Keyboard interface 失效
标题翻译：键盘界面
公开(公告)号：US5146567A
公开(公告)日：1992-09-08
申请号：US397000
申请日：1989-08-22
申请人： Kent Kao
发明人： Kent Kao
IPC分类号： G06F3/023
CPC分类号： G06F3/023
摘要： A computer keyboard interface is disclosed with an improved system for controlling the signals on a clock line and a data line for communication between the keyboard interface and the system interface. Two bi-directional input/output ports are used, one for the clock line and one for the data line. The data and clock lines are then used not only for the transmission of data but also used by the keyboard interface for sensing status signals from the system interface. This simplifies the keyboard interface design.

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