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1. 发明授权

US07809035B2 Eye-safe laser navigation sensor 有权
标题翻译：眼睛安全的激光导航传感器
公开(公告)号：US07809035B2
公开(公告)日：2010-10-05
申请号：US11432987
申请日：2006-05-12
申请人： Steven Sanders , Gary Gibbs , Ashish Pancholy , Gajender Rohilla , Pulkit Shah
发明人： Steven Sanders , Gary Gibbs , Ashish Pancholy , Gajender Rohilla , Pulkit Shah
IPC分类号： H01S3/00
CPC分类号： H01S5/042 , H01S5/06808
摘要： The apparatus includes a diode laser and a current source interconnected with the diode laser. Two independent circuits in the current source are configured to limit current flowing through the diode laser. A first current limiter circuit configured to limit a current output from the current source to an anode of the diode laser, and an independent second current limiter circuit configured to limit a current return from a cathode of the diode laser to the current source so that laser output power does not exceed a specified maximum regardless of a single fault in either the first or second current limiter circuits.
摘要翻译：该装置包括二极管激光器和与二极管激光器互连的电流源。电流源中的两个独立电路被配置为限制流过二极管激光器的电流。第一限流器电路，被配置为将来自电流源的电流输出限制到二极管激光器的阳极;以及独立的第二限流器电路，其被配置为限制从二极管激光器的阴极到电流源的电流返回，使得激光器输出功率不超过规定的最大值，而与第一或第二限流器电路中的单个故障无关。

2. 发明申请

US20070230525A1 Eye-safe laser navigation sensor 有权
标题翻译：眼睛安全的激光导航传感器
公开(公告)号：US20070230525A1
公开(公告)日：2007-10-04
申请号：US11432987
申请日：2006-05-12
申请人： Steven Sanders , Gary Gibbs , Ashish Pancholy , Gajender Rohilla , Pulkit Shah
发明人： Steven Sanders , Gary Gibbs , Ashish Pancholy , Gajender Rohilla , Pulkit Shah
IPC分类号： H01S3/00
CPC分类号： H01S5/042 , H01S5/06808
摘要： One embodiment relates to an optical navigation apparatus which provides fault-tolerant limitation of laser output power. The apparatus includes a diode laser and a current source interconnected with the diode laser. Two independent circuits in the current source are configured to limit current flowing through the diode laser. Another embodiment relates to a method of providing fault-tolerant limitation of laser output power in an optical navigation apparatus. A first digital current limit value is converted to a first analog signal, and the first analog signal is used to limit an electrical current from a power supply connection to an anode of a diode laser. A second digital current limit value is converted to a second analog signal, and the second analog signal is used to limit an electrical current from a cathode of the diode laser to a ground connection. Other embodiments are also disclosed.
摘要翻译：一个实施例涉及提供激光输出功率的容错限制的光学导航装置。该装置包括二极管激光器和与二极管激光器互连的电流源。电流源中的两个独立电路被配置为限制流过二极管激光器的电流。另一实施例涉及在光学导航装置中提供激光输出功率的容错限制的方法。第一数字电流限制值被转换为第一模拟信号，并且第一模拟信号用于限制从二极管激光器的电源连接到电源连接的电流。第二数字电流限制值被转换为第二模拟信号，并且第二模拟信号用于限制从二极管激光器的阴极到接地连接的电流。还公开了其他实施例。

3. 发明授权

US07598812B2 Shorted input detection for amplifier circuits 有权
标题翻译：放大器电路短路输入检测
公开(公告)号：US07598812B2
公开(公告)日：2009-10-06
申请号：US11818172
申请日：2007-06-12
申请人： Pulkit Shah , Gajender Rohilla
发明人： Pulkit Shah , Gajender Rohilla
IPC分类号： H03F3/08
CPC分类号： H03F3/08 , H03F1/52
摘要： A method and an apparatus are described for shorted input detection for amplifier circuits. An embodiment of a circuit includes multiple amplifier circuits, with each amplifier circuit having an input and an output. The circuit also includes multiple short detection circuits, with one of the short detection circuits being coupled to the input of each amplifier circuit. Each short detection circuit has an active state for detection of short circuits and an inactive state for normal amplifier operation. The circuit also includes a register coupled with the output of each of the amplifier circuits to hold the output of one or more of the amplifier circuits.
摘要翻译：一种用于放大器电路的短路输入检测的方法和装置。电路的实施例包括多个放大器电路，每个放大器电路具有输入和输出。该电路还包括多个短路检测电路，其中一个短路检测电路耦合到每个放大器电路的输入端。每个短路检测电路具有用于检测短路的有效状态和用于正常放大器操作的无效状态。电路还包括与每个放大器电路的输出耦合的寄存器，以保持一个或多个放大器电路的输出。

4. 发明授权

US06933786B1 Amplifier circuit and method 有权
标题翻译：放大器电路及方法
公开(公告)号：US06933786B1
公开(公告)日：2005-08-23
申请号：US10146524
申请日：2002-05-15
申请人： Palathol mana Sivadasan Mohandas , Gajender Rohilla , Pulkit Shah
发明人： Palathol mana Sivadasan Mohandas , Gajender Rohilla , Pulkit Shah
IPC分类号： H03F1/56 , H03F3/08 , H03F3/45 , H03G1/00
CPC分类号： H03F1/56 , H03F3/08 , H03F3/087 , H03F3/45085 , H03F3/45475 , H03F2200/222 , H03F2203/45702 , H03G1/007 , H03G1/0088
摘要： An amplifier system has a control circuit. An amplifier is coupled to the control circuit and has a controllable gain. A controllable input impedance circuit is coupled to the control circuit. When the gain of the amplifier is changed the controllable input impedance circuit's impedance is adjusted, so that the input impedance to the system remains essentially constant.
摘要翻译：放大器系统具有控制电路。放大器耦合到控制电路并具有可控增益。可控输入阻抗电路耦合到控制电路。当放大器的增益改变时，调节可控输入阻抗电路的阻抗，使得系统的输入阻抗基本保持恒定。

5. 发明授权

US07755348B1 Current sensor output measurement system and method 有权
标题翻译：电流传感器输出测量系统及方法
公开(公告)号：US07755348B1
公开(公告)日：2010-07-13
申请号：US12413559
申请日：2009-03-28
申请人： Pulkit Shah , Gajender Rohilla
发明人： Pulkit Shah , Gajender Rohilla
IPC分类号： G01R1/30
CPC分类号： G01R35/005 , G01R19/0092
摘要： Analog channel calibration methods, devices and systems are disclosed. One embodiment of the present invention pertains to a method for calibrating a channel offset of a current sensor which comprises measuring a channel offset native to a current sensor channel. The method also comprises storing the channel offset native to the current sensor channel to a register associated with the current sensor channel as a value. Additionally, the method comprises calibrating an output signal generated in response to an input signal to the current sensor channel based on the value.
摘要翻译：公开了模拟通道校准方法，装置和系统。本发明的一个实施例涉及一种用于校准电流传感器的通道偏移的方法，其包括测量对当前传感器通道原生的通道偏移。该方法还包括将当前传感器信道的原始信道偏移量存储到与当前传感器信道相关联的寄存器中作为值。另外，该方法包括基于该值来校准响应于当前传感器通道的输入信号而产生的输出信号。

6. 发明申请

US20080001676A1 Shorted input detection for amplifier circuits 有权
标题翻译：放大器电路短路输入检测
公开(公告)号：US20080001676A1
公开(公告)日：2008-01-03
申请号：US11818172
申请日：2007-06-12
申请人： Pulkit Shah , Gajender Rohilla
发明人： Pulkit Shah , Gajender Rohilla
IPC分类号： H03F3/08
CPC分类号： H03F3/08 , H03F1/52
摘要： A method and an apparatus are described for shorted input detection for amplifier circuits. An embodiment of a circuit includes multiple amplifier circuits, with each amplifier circuit having an input and an output. The circuit also includes multiple short detection circuits, with one of the short detection circuits being coupled to the input of each amplifier circuit. Each short detection circuit has an active state for detection of short circuits and an inactive state for normal amplifier operation. The circuit also includes a register coupled with the output of each of the amplifier circuits to hold the output of one or more of the amplifier circuits.
摘要翻译：一种用于放大器电路的短路输入检测的方法和装置。电路的实施例包括多个放大器电路，每个放大器电路具有输入和输出。该电路还包括多个短路检测电路，其中一个短路检测电路耦合到每个放大器电路的输入端。每个短路检测电路具有用于检测短路的有效状态和用于正常放大器操作的无效状态。电路还包括与每个放大器电路的输出耦合的寄存器，以保持一个或多个放大器电路的输出。

7. 发明授权

US08981754B1 Programmable reference signal selection 有权
标题翻译：可编程参考信号选择
公开(公告)号：US08981754B1
公开(公告)日：2015-03-17
申请号：US12777090
申请日：2010-05-10
申请人： Gajender Rohilla , Harold Kutz
发明人： Gajender Rohilla , Harold Kutz
IPC分类号： G05F1/59 , G05F1/595
CPC分类号： H03M1/1014
摘要： A processing system measures an input voltage received at an input of an analog circuit, such as an analog-to-digital converter (ADC), where the input voltage is measured by comparing the input voltage to a reference voltage. The reference voltage is determined by the difference between a first voltage and a ground voltage. The processing system includes a programmable reference signal selection circuit to maintain the reference voltage at a constant level.
摘要翻译：处理系统测量在诸如模数转换器（ADC）的模拟电路的输入处接收的输入电压，其中通过将输入电压与参考电压进行比较来测量输入电压。参考电压由第一电压和接地电压之间的差确定。处理系统包括可编程参考信号选择电路，以将参考电压维持在恒定水平。

8. 发明授权

US08040266B2 Programmable sigma-delta analog-to-digital converter 有权
标题翻译：可编程Σ-Δ模数转换器
公开(公告)号：US08040266B2
公开(公告)日：2011-10-18
申请号：US12060128
申请日：2008-03-31
申请人： Eashwar Thiagarajan , Mohandas Palatholmana Sivadasan , Gajender Rohilla , Harold Kutz , Monte Mar
发明人： Eashwar Thiagarajan , Mohandas Palatholmana Sivadasan , Gajender Rohilla , Harold Kutz , Monte Mar
IPC分类号： H03M3/00
CPC分类号： H03M3/394 , H03M3/438
摘要： A system includes an analog-to-digital modulator to convert at least one analog input signal into at least one digital output signal. The system also includes a processing device to set an operational order and a quantization level of the analog-to-digital modulator. The analog-to-digital modulator converts the analog input signal into the digital output signal according to the operational order and the quantization level.
摘要翻译：一种系统包括将至少一个模拟输入信号转换成至少一个数字输出信号的模拟 - 数字调制器。该系统还包括用于设置模数转换器的操作顺序和量化电平的处理装置。模拟数字调制器根据操作顺序和量化级将模拟输入信号转换为数字输出信号。

9. 发明授权

US07659776B2 Offset voltage correction for high gain amplifier 有权
标题翻译：高增益放大器的偏移电压校正
公开(公告)号：US07659776B2
公开(公告)日：2010-02-09
申请号：US11636347
申请日：2006-12-06
申请人： Gajender Rohilla
发明人： Gajender Rohilla
IPC分类号： H03F1/02
CPC分类号： H03F3/08
摘要： A method and an apparatus are described for an offset correction in a high gain amplifier. An embodiment of an amplifier circuit includes an amplifier to convert a current signal into a voltage signal, where the amplifier generates an offset voltage in the voltage signal. The amplifier circuit also includes a sampling component coupled with the amplifier, with the sampling component subtracting a first sample of the voltage signal from a second sample of the voltage signal to produce a difference value. The amplifier circuit further includes a gain component coupled with the sampling component to amplify the difference between the first sample and the second sample.
摘要翻译：描述了用于高增益放大器中的偏移校正的方法和装置。放大器电路的实施例包括将电流信号转换为电压信号的放大器，其中放大器在电压信号中产生偏移电压。放大器电路还包括与放大器耦合的采样分量，采样分量从电压信号的第二采样中减去电压信号的第一采样以产生差值。放大器电路还包括与采样部件耦合的增益部件，以放大第一样品和第二样品之间的差异。

10. 发明申请

US20080088368A1 Offset voltage correction for high gain amplifier 有权
标题翻译：高增益放大器的偏移电压校正
公开(公告)号：US20080088368A1
公开(公告)日：2008-04-17
申请号：US11636347
申请日：2006-12-06
申请人： Gajender Rohilla
发明人： Gajender Rohilla
IPC分类号： H03F1/02
CPC分类号： H03F3/08
摘要： A method and an apparatus are described for an offset correction in a high gain amplifier. An embodiment of an amplifier circuit includes an amplifier to convert a current signal into a voltage signal, where the amplifier generates an offset voltage in the voltage signal. The amplifier circuit also includes a sampling component coupled with the amplifier, with the sampling component subtracting a first sample of the voltage signal from a second sample of the voltage signal to produce a difference value. The amplifier circuit further includes a gain component coupled with the sampling component to amplify the difference between the first sample and the second sample.
摘要翻译：描述了用于高增益放大器中的偏移校正的方法和装置。放大器电路的实施例包括将电流信号转换为电压信号的放大器，其中放大器在电压信号中产生偏移电压。放大器电路还包括与放大器耦合的采样分量，采样分量从电压信号的第二采样中减去电压信号的第一采样以产生差值。放大器电路还包括与采样部件耦合的增益部件，以放大第一样品和第二样品之间的差异。

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