公开(公告)号：US06903616B2

公开(公告)日：2005-06-07

申请号：US10603238

申请日：2003-06-24

Applicant: Rong Yin ,  Mehdi Zamanian

Inventor： Rong Yin ,  Mehdi Zamanian

IPC: H03B5/06 ,  H03B5/36 ,  H03B1/00

CPC classification number: H03B5/36 ,  H03B5/06

Abstract: A method and circuit are disclosed for enabling an oscillator circuit to oscillate a predetermined period of time following completion of a power-up operation. The circuit may include a counter having a control for receiving a control signal from a system power-on-reset circuit, and a clock input. A ring oscillator has an output coupled to the clock input of the counter.

Abstract translation: 公开了一种方法和电路，用于使振荡器电路能够在上电操作完成之后的预定时间段内振荡。 电路可以包括具有用于从系统上电复位电路接收控制信号的控制器和时钟输入的计数器。 环形振荡器具有耦合到计数器的时钟输入的输出。

公开(公告)号：US6086244A

公开(公告)日：2000-07-11

申请号：US822601

申请日：1997-03-20

Applicant: Rong Yin

Inventor： Rong Yin

IPC: G04G3/02 ,  G04C19/02

CPC classification number: G04G3/02

Abstract: A temperature compensated clock and method of clocking systems are provided. The clock preferably has an oscillator for generating an oscillating waveform signal at a preselected frequency and a frequency divider responsive to the oscillator for dividing the frequency of the oscillating waveform signal. A temperature monitoring circuit is positioned responsive to a voltage input signal independent of temperature and a voltage input signal proportional to temperature for monitoring temperature variations. A temperature compensating circuit, preferably including a programmable scaling circuit, is responsive to the frequency divider and the temperature monitoring circuit for scaling the divided frequency of the generated waveform and thereby advantageously produces a temperature compensated output timing signal.

Abstract translation: 提供了温度补偿时钟和计时系统的方法。 时钟优选地具有用于以预选频率产生振荡波形信号的振荡器和响应于振荡器分频振荡波形信号的频率的分频器。 温度监测电路响应于独立于温度的电压输入信号和与温度成比例的电压输入信号来定位，用于监测温度变化。 优选地包括可编程缩放电路的温度补偿电路响应于分频器和温度监视电路，用于缩放产生的波形的分频，从而有利地产生温度补偿的输出定时信号。

公开(公告)号：US6057699A

公开(公告)日：2000-05-02

申请号：US988977

申请日：1997-12-11

Applicant: Rong Yin ,  Mehdi Zamanian

Inventor： Rong Yin ,  Mehdi Zamanian

IPC: G01R31/28 ,  G01R31/26

CPC classification number: G01R31/2824

Abstract: A frequency test circuit (200) includes a built-in self test (BIST) circuit (212) which provides for testing of a frequency generating circuit such as an oscillator circuit (100). The test circuit (200) includes circuit stages (202-208) which help produce a reference signal (210) which has substantially the same frequency as that produced by the oscillator circuit (100) when it is operational. Since the low current oscillator circuit (100) can fail at any one of the divider or level shifting stages (106-112), the test circuit (200) can determine if the reference signal and the output signal of the oscillator have substantially the same frequency and produce a test condition signal indicative of either a pass or failed test at test port (214).

公开(公告)号：US06911873B2

公开(公告)日：2005-06-28

申请号：US10603239

申请日：2003-06-24

Applicant: Rong Yin ,  Thomas Allyn Coker

Inventor： Rong Yin ,  Thomas Allyn Coker

IPC: G01R23/15 ,  H03B1/00 ,  G01R23/02

CPC classification number: G01R23/15

Abstract: A method and circuit are disclosed for detecting the performance of an oscillator circuit. In particular, the circuit may detect a signal, such as the output of the oscillator circuit, failing to oscillate as desired. The second circuit may be capable of detecting whether the signal oscillates at a frequency that is less than a predetermined frequency. The second circuit may include timing circuits for determining whether the signal remains in a first logic state for at least a predetermined period of time and whether the signal remains in a second logic state for at least the predetermined period of time.

Abstract translation: 公开了一种用于检测振荡器电路的性能的方法和电路。 特别地，电路可以检测诸如振荡器电路的输出的信号，如期望的那样不能振荡。 第二电路可能能够检测信号是否以小于预定频率的频率振荡。 第二电路可以包括用于确定信号是否保持在第一逻辑状态至少预定时间段的定时电路，以及该信号是否在至少预定时间段内保持在第二逻辑状态。

公开(公告)号：US06750683B2

公开(公告)日：2004-06-15

申请号：US09846524

申请日：2001-04-30

Applicant: David C. McClure ,  Rong Yin

Inventor： David C. McClure ,  Rong Yin

IPC: H03K522

CPC classification number: G01R19/16547

Abstract: A circuit and method are disclosed for monitoring the voltage level of an unregulated power supply. The circuit includes a voltage reference circuit for generating a first reference voltage signal and a trim circuit which generates a trimmed reference voltage signal based upon the first reference voltage signal. A comparator compares the unregulated power supply voltage to the trimmed reference voltage signal and asserts an output signal based upon the comparison. The output signal is fed back as an input to the trim circuit so that the trim circuit provides a hysteresis effect.

Abstract translation: 公开了一种用于监测未调节电源的电压电平的电路和方法。 电路包括用于产生第一参考电压信号的电压参考电路和基于第一参考电压信号产生修整的参考电压信号的微调电路。 比较器将未调节的电源电压与修整的参考电压信号进行比较，并根据比较确定输出信号。 输出信号作为输入反馈到微调电路，使得微调电路提供滞后效应。

公开(公告)号：US06476669B2

公开(公告)日：2002-11-05

申请号：US09902206

申请日：2001-07-10

Applicant: David C. McClure ,  Rong Yin

Inventor： David C. McClure ,  Rong Yin

IPC: H03K1772

CPC classification number: G05F3/242

Abstract: A reference voltage trim circuit includes a voltage follower receiving the reference voltage to be trimmed, with one or more resistive loads providing predefined voltage shifts serially connected between the output of the voltage follower and the output of the trim circuit. The voltage follower includes a current mirror differential amplifier receiving the reference voltage at one input and the output of the voltage follower at the other input, and a transistor with a resistive load connected between the power supply voltages and receiving the output of the current mirror differential amplifier at the transistor's gate. The resistive loads provide varying preselected voltage drop and are each shunted by corresponding fuses, with the entire series of resistive loads shunted by a master fuse. To trim the reference voltage, at least the master fuse is blown, together with the fuse(s) shunting resistive loads which combine to result in the desired trim voltage. Pass gates control which end of the resistive load series is connected to the output of the voltage follower and which is connected to the output of the trim circuit. To decrement the reference voltage, a first end is connected to the output of the voltage follower and the second end is connected to trim circuit output; to increment the reference voltage, the second end of the resistive load series is connected to the voltage follower output and the first end is connected to the trim circuit output.

Abstract translation: 参考电压调整电路包括接收要修整的参考电压的电压跟随器，其中一个或多个电阻负载提供串联连接在电压跟随器的输出端和微调电路的输出之间的预定电压偏移。 电压跟随器包括电流反射镜差分放大器，其在一个输入处接收参考电压，并在另一个输入端接收电压跟随器的输出;以及晶体管，其电阻负载连接在电源电压之间并接收电流镜差分的输出 放大器在晶体管的门。 电阻负载提供变化的预选电压降，并且每个分压由对应的保险丝分流，整个电阻负载系列由主保险丝分流。 为了修整参考电压，至少主保险丝与熔断器一起分流电阻性负载，结合起来产生所需的调整电压。 通路控制电阻负载系列的哪一端连接到电压跟随器的输出端并连接到微调电路的输出。 为了减小参考电压，第一端连接到电压跟随器的输出端，第二端连接到微调电路输出; 为了增加参考电压，电阻负载系列的第二端连接到电压跟随器输出，第一端连接到微调电路输出。

公开(公告)号：USRE37876E1

公开(公告)日：2002-10-15

申请号：US09568201

申请日：2000-05-05

Applicant: Rong Yin

Inventor： Rong Yin

IPC: H02J100

CPC classification number: H02J9/061 ,  H02J2009/068 ,  Y10T307/615 ,  Y10T307/735

Abstract: An apparatus and method for switching between two power supplies, a primary power supply and a secondary power supply. The present invention generates a first reference voltage using the voltage of the primary power supply and the secondary power supply, wherein the primary power supply voltage is variable. The present invention also generates a second reference voltage based on the voltage of the primary power supply. The first and second reference voltages each have a different slope and the crossing point between these two reference voltages indicate that a switch between the primary power supply and the secondary power supply should occur.

Abstract translation: 一种用于在两个电源，主电源和次电源之间切换的装置和方法。 本发明使用主电源和次级电源的电压产生第一参考电压，其中主电源电压是可变的。 本发明还基于主电源的电压产生第二参考电压。 第一和第二参考电压各自具有不同的斜率，并且这两个参考电压之间的交叉点表明应该发生主电源和次电源之间的开关。

公开(公告)号：US5883507A

公开(公告)日：1999-03-16

申请号：US853764

申请日：1997-05-09

Applicant: Rong Yin

Inventor： Rong Yin

IPC: G05F3/26 ,  G05F3/16

CPC classification number: G05F3/267 ,  G05F3/262 ,  Y10S323/907

Abstract: An integrated circuit and method are provided for generating current for low power applications. The integrated circuit preferably includes a current generating circuit responsive to a supply voltage for generating a first reference current and a temperature compensating voltage controlling circuit for generating a temperature compensated voltage control signal during temperature variations. A bias controlling circuit is preferably connected to the current generating circuit and the temperature compensating voltage control circuit for biasingly controlling the temperature compensating voltage control circuit. A current output controlling circuit is connected to the current generating circuit and the temperature compensating voltage controlling circuit for controlling a second temperature compensated reference current responsive to the temperature compensated voltage control signal so as to generate a high output source current even during low temperature conditions.

Abstract translation: 提供用于为低功率应用产生电流的集成电路和方法。 集成电路优选地包括响应用于产生第一参考电流的电源电压的电流产生电路和用于在温度变化期间产生温度补偿电压控制信号的温度补偿电压控制电路。 偏置控制电路优选地连接到电流产生电路和用于偏置地控制温度补偿电压控制电路的温度补偿电压控制电路。 电流输出控制电路连接到电流产生电路和温度补偿电压控制电路，用于响应于温度补偿电压控制信号控制第二温度补偿参考电流，以便即使在低温条件下也产生高输出源电流。

公开(公告)号：US07411433B2

公开(公告)日：2008-08-12

申请号：US11012693

申请日：2004-12-15

Applicant: David Charles McClure ,  Rong Yin

Inventor： David Charles McClure ,  Rong Yin

IPC: H03K17/22

CPC classification number: H03K5/2481 ,  H03K17/223

Abstract: A reset ramp control structure and method is described. A fast ramp down condition of a monitored voltage is detected and used to force the state of system reset. Delay between fast ramp detection and the forcing of system reset is adjustable. Operation is adaptable to include all DC power systems. The reset ramp control structure provides operational protection during fast ramp down conditions when standard reset circuitry may not be operational.

Abstract translation: 描述了复位斜坡控制结构和方法。 检测到监控电压的快速下降条件，并用于强制系统复位状态。 快速斜坡检测与系统复位强制之间的延迟可调。 操作适应于包括所有直流电源系统。 当标准复位电路可能不可操作时，复位斜坡控制结构在快速下降条件下提供操作保护。

公开(公告)号：US20050134346A1

公开(公告)日：2005-06-23

申请号：US11012693

申请日：2004-12-15

Applicant: David McClure ,  Rong Yin

Inventor： David McClure ,  Rong Yin

IPC: H03K5/24 ,  H03K17/22 ,  H03L7/00

CPC classification number: H03K5/2481 ,  H03K17/223

Abstract: A reset ramp control structure and method is described. A fast ramp down condition of a monitored voltage is detected and used to force the state of system reset. Delay between fast ramp detection and the forcing of system reset is adjustable. Operation is adaptable to include all DC power systems. The reset ramp control structure provides operational protection during fast ramp down conditions when standard reset circuitry may not be operational.

Abstract translation: 描述了复位斜坡控制结构和方法。 检测到监控电压的快速下降条件，并用于强制系统复位状态。 快速斜坡检测与系统复位强制之间的延迟可调。 操作适应于包括所有直流电源系统。 当标准复位电路可能不工作时，复位斜坡控制结构在快速下降条件下提供操作保护。