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1. 发明授权

US5988819A Single output transistor output stage for interface applications 失效
标题翻译：用于接口应用的单输出晶体管输出级
公开(公告)号：US5988819A
公开(公告)日：1999-11-23
申请号：US24859
申请日：1998-02-17
申请人： Sui Ping Shieh , Pirooz Parvarandeh , David Bingham
发明人： Sui Ping Shieh , Pirooz Parvarandeh , David Bingham
IPC分类号： H03K19/003 , G05F1/10
CPC分类号： H03K19/00315
摘要： An interface output stage includes a pull-up circuit and a pull-down circuit connected to a positive power supply signal line having a first voltage, an output signal line having an output voltage and a negative power supply signal line having a second voltage. The pull-up circuit includes a single output transistor and a body snatcher circuit, both interconnected between the positive power supply signal line and the output signal line. The body snatcher circuit ties the bodies of the output transistor and the transistors forming the body snatcher circuit to either the first voltage or the output voltage. The pull-down circuit is designed generally similar to the pull-up circuit to tie bodies of its transistors to either the output voltage or the second voltage.
摘要翻译：接口输出级包括上拉电路和连接到具有第一电压的正电源信号线，具有输出电压的输出信号线和具有第二电压的负电源信号线的下拉电路。上拉电路包括在正电源信号线和输出信号线之间互连的单个输出晶体管和主体捕获电路。身体拾取器电路将输出晶体管的主体和形成主体捕获电路的晶体管连接到第一电压或输出电压。下拉电路的设计大体类似于将其晶体管的主体连接到输出电压或第二电压的上拉电路。

2. 发明授权

US5894240A Reset methods and apparatus for microcontrollers having bidirectional reset lines 失效
标题翻译：具有双向复位线路的微控制器的复位方法和装置
公开(公告)号：US5894240A
公开(公告)日：1999-04-13
申请号：US929177
申请日：1997-09-08
申请人： Sui Ping Shieh , Rune Domsten
发明人： Sui Ping Shieh , Rune Domsten
IPC分类号： G06F1/24 , G06F15/78 , H03K3/01 , H03K17/22
CPC分类号： G06F1/24
摘要： Method and apparatus for use in a microcontroller based system for detecting an active reset followed by the release of the reset line, and upon the release of the reset line, rapidly driving the reset line of the system to the inactive state to prevent the microcontroller from falsely interpreting the reset line voltage level as being a non-microcontroller initiated reset. The reset line is then released, after a short time delay so as to not interfere with any succeeding reset signal.
摘要翻译：用于基于微控制器的系统中的方法和装置，用于检测有效复位，随后释放复位线，并且在释放复位线时，快速地将系统的复位线驱动到非激活状态，以防止微控制器错误地将复位线电压电平解释为非微控制器启动的复位。然后在短时间延迟之后释放复位线，以便不干扰任何后续复位信号。

3. 发明授权

US5799194A Communication interface circuit having network connection detection capability 失效
标题翻译：具有网络连接检测能力的通信接口电路
公开(公告)号：US5799194A
公开(公告)日：1998-08-25
申请号：US534954
申请日：1995-09-28
申请人： Charles M. Allen , Brett J. Fox , Sui Ping Shieh
发明人： Charles M. Allen , Brett J. Fox , Sui Ping Shieh
IPC分类号： G06F1/32 , G08B26/00 , H04L12/10 , H04L12/12 , H04L29/06
CPC分类号： G06F1/325 , G06F1/3209 , G06F1/3287 , H04L12/10 , H04L12/12 , H04L29/06 , H04L69/18 , Y02B60/1282 , Y02B60/32 , Y02B60/34
摘要： Methods and apparatus for providing network communications capability to a computer system in accordance with standard communication line protocols are described, including interface circuits which sense various characteristics of the communication lines to control or provide signals to control power to line drivers and/or other substantial power consuming circuitry to conserve power when communication line conditions indicate powering such circuits is not useful. Various embodiments are disclosed.
摘要翻译：描述了根据标准通信线路协议向计算机系统提供网络通信能力的方法和装置，包括接口电路，其检测通信线路的各种特性以控制或提供信号以控制线路驱动器的功率和/或其他实质功率当通信线路条件指示为这种电路供电时，节省电力的消耗电路是无用的。公开了各种实施例。

4. 发明授权

US5649098A Methods and apparatus for disabling a watchdog function 失效
标题翻译：禁用看门狗功能的方法和设备
公开(公告)号：US5649098A
公开(公告)日：1997-07-15
申请号：US557848
申请日：1995-11-14
申请人： Sui Ping Shieh , Dana William Davis
发明人： Sui Ping Shieh , Dana William Davis
IPC分类号： G06F1/32 , G06F11/00 , G06F11/30 , G01R31/28
CPC分类号： G06F11/0757
摘要： An apparatus for disabling a watchdog function of a watchdog circuit when a watchdog input pin of the watchdog circuit fails to receive an externally pulsed signal, which has a first predefined period. The watchdog circuit, while the watchdog function is enabled, generates a watchdog fault condition if the externally pulsed signal is not received at the watchdog input pin by the end of a predefined watchdog timeout period. The apparatus includes a pulse generation circuit for generating a pulsed signal having a second predefined period, the second predefined period being shorter than the watchdog timeout period. Further, the apparatus includes a drive circuit coupled to the pulse generation circuit and the watchdog input pin. The drive circuit provides an internally pulsed signal to the watchdog input pin at a predefined current level, responsive to the pulsed signal from the pulse generation circuit. This predefined current level is sufficient to pull the watchdog input pin to a potential level of the internally pulsed signal when the watchdog input pin does not receive the externally pulsed signal. Moreover, this predefined current level is incapable of pulling the conductor to the potential level of the internally pulsed signal when the watchdog input pin receives the externally pulsed signal.
摘要翻译：一种用于在看门狗电路的看门狗输入引脚不能接收具有第一预定周期的外部脉冲信号时禁止看门狗电路的看门狗功能的装置。看门狗电路在使能看门狗功能时，如果外部脉冲信号在预期的看门狗超时周期结束时在看门狗输入引脚没有接收到，则会产生看门狗故障。该装置包括用于产生具有第二预定周期的脉冲信号的脉冲发生电路，第二预定周期短于看门狗超时周期。此外，该装置包括耦合到脉冲发生电路和看门狗输入引脚的驱动电路。驱动电路根据来自脉冲发生电路的脉冲信号，以预定的电流电平向看门狗输入引脚提供内部脉冲信号。当看门狗输入引脚没有接收外部脉冲信号时，此预定义的电流电平足以将看门狗输入引脚拉至内部脉冲信号的电位电平。此外，当看门狗输入引脚接收到外部脉冲信号时，此预定义的电流电平不能将导体拉到内部脉冲信号的电位电平。

5. 发明授权

US06233689B1 Communication circuit having network connection detection capability 有权
标题翻译：具有网络连接检测能力的通信电路
公开(公告)号：US06233689B1
公开(公告)日：2001-05-15
申请号：US09436931
申请日：1999-11-08
申请人： Charles M. Allen , Brett J. Fox , Sui Ping Shieh , Robert Bruce Denmark
发明人： Charles M. Allen , Brett J. Fox , Sui Ping Shieh , Robert Bruce Denmark
IPC分类号： G06F132
CPC分类号： G06F1/3209 , G06F1/325 , G06F1/3287 , H04L12/10 , H04L12/12 , H04L29/06 , H04L69/18 , Y02D10/171 , Y02D50/20 , Y02D50/40
摘要： Methods and apparatus for providing network communications capability to a computer system in accordance with standard communication line protocols are described, including interface circuits which sense various characteristics of the communication lines to control or provide signals to control power to line drivers and/or other substantial power consuming circuitry to conserve power when communication line conditions indicate powering such circuits is not useful. Various embodiments are disclosed.
摘要翻译：描述了根据标准通信线路协议向计算机系统提供网络通信能力的方法和装置，包括接口电路，其检测通信线路的各种特性以控制或提供信号以控制线路驱动器的功率和/或其他实质功率当通信线路条件指示为这种电路供电时，节省电力的消耗电路是无用的。公开了各种实施例。

6. 发明授权

US6000003A Communication circuit having network connection detection capability 失效
标题翻译：具有网络连接检测能力的通信电路
公开(公告)号：US6000003A
公开(公告)日：1999-12-07
申请号：US715927
申请日：1996-09-19
申请人： Charles M. Allen , Brett J. Fox , Sui Ping Shieh , Robert Bruce Denmark
发明人： Charles M. Allen , Brett J. Fox , Sui Ping Shieh , Robert Bruce Denmark
IPC分类号： G06F1/32 , H04L12/10 , H04L12/12 , H04L29/06
CPC分类号： G06F1/3209 , G06F1/325 , G06F1/3287 , H04L12/10 , H04L12/12 , H04L29/06 , H04L69/18 , Y02B60/1282 , Y02B60/32 , Y02B60/34
摘要： Methods and apparatus for providing network communications capability to a computer system in accordance with standard communication line protocols are described, including interface circuits which sense various characteristics of the communication lines to control or provide signals to control power to line drivers and/or other substantial power consuming circuitry to conserve power when communication line conditions indicate powering such circuits is not useful. Various embodiments are disclosed.
摘要翻译：描述了根据标准通信线路协议向计算机系统提供网络通信能力的方法和装置，包括接口电路，其检测通信线路的各种特性以控制或提供信号以控制线路驱动器的功率和/或其他实质功率当通信线路条件指示为这种电路供电时，节省电力的消耗电路是无用的。公开了各种实施例。

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