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公开(公告)号：US20150115927A1
公开(公告)日：2015-04-30
申请号：US14521536
申请日：2014-10-23
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd
Inventor： Min Chen , Wen Liu , Hong Xia Li
IPC: G05F5/00
Abstract: A voltage detector operates to detect a system power supply voltage and generate a trigger signal. A control signal generator responds to the trigger signal and generates a control signal. A DC bias generator responds to the control signal by generating a DC bias. The control signal controls the DC bias to have a first value when the power supply voltage is a first voltage and have a second value when the power supply voltage is a second voltage different from the first voltage, wherein the first value is different from the second value. A dynamic DC bias is generated which can not only support a larger voltage scope, but also significantly improves signal to noise ratio. The system power supply detection may concern stop/start operation of an automobile engine.
Abstract translation: 电压检测器用于检测系统电源电压并产生触发信号。 控制信号发生器响应触发信号并产生控制信号。 DC偏置发生器通过产生DC偏压来响应控制信号。 当电源电压为第一电压时，控制信号控制DC偏压具有第一值，当电源电压是与第一电压不同的第二电压时，控制信号具有第二值，其中第一值不同于第二电压 值。 产生动态直流偏置，不仅可以支持更大的电压范围，而且可以显着提高信噪比。 系统电源检测可能涉及汽车发动机的停止/起动操作。
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公开(公告)号：US20150071464A1
公开(公告)日：2015-03-12
申请号：US14478531
申请日：2014-09-05
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Ru Feng Du , Qi Yu Liu
CPC classification number: H03F1/3205 , H03F1/0205 , H03F1/305 , H03F3/183 , H03F3/185 , H03F3/187 , H03F3/211 , H03F3/2171 , H03F3/2173 , H03F3/45179 , H03F2200/03 , H03F2200/351 , H03F2203/21106 , H03F2203/45151 , H03F2203/45156 , H03G3/345 , H03G3/348 , H04R3/002
Abstract: A class D amplifier receives and amplifies a differential analog signal which is then differentially integrated. Two pulse width modulators generate pulse signals corresponding to the differentially integrated analog signal and two power units generate output pulse signals. The outputs the power units are coupled to input terminals of integrators via a resistor feedback network. An analog output unit converts the pulse signals to an output analog signal. The differential integration circuitry implements a soft transition between mute/un-mute. In mute, the integrator output is fixed. During the soft transition, the PWM outputs change slowly from a fixed 50% duty cycle to a final value to ensure that no pop noise is present in the output as a result of mode change.
Abstract translation: D类放大器接收和放大差分模拟信号，然后差分模拟信号被差分地积分。 两个脉冲宽度调制器产生对应于差分集成模拟信号的脉冲信号，两个功率单元产生输出脉冲信号。 功率单元的输出通过电阻反馈网络耦合到积分器的输入端。 模拟输出单元将脉冲信号转换为输出模拟信号。 差分积分电路实现静音/非静音之间的软转换。 静音时，积分器输出是固定的。 在软转换期间，PWM输出从固定的50％占空比缓慢变化到最终值，以确保由于模式更改导致输出中没有弹出噪声。
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公开(公告)号：US08811766B2
公开(公告)日：2014-08-19
申请号：US13332949
申请日：2011-12-21
Applicant: Anna Raffalli , Haiyun Wang , Lucas Hui , Patricia Wei Yin Chiang
Inventor： Anna Raffalli , Haiyun Wang , Lucas Hui , Patricia Wei Yin Chiang
CPC classification number: H04N19/00066 , H04N19/117 , H04N19/14 , H04N19/86
Abstract: Systems and methods are disclosed for determining the perceptibility of noise in a block of images and/or video. The systems and methods may compute a mask value for the block using a block masking generator. The mask value may indicate the perceptibility of noise in the block. The mask value may be computed using a normalized activity value and/or a texture value for the block. The normalized activity value may indicate the relative activity in the block as compared to the activity in the image and/or video. The texture value may indicate the strength and/or number of edges in the block.
Abstract translation: 公开了用于确定图像和/或视频块中的噪声的感知性的系统和方法。 系统和方法可以使用块掩码生成器来计算块的掩码值。 掩模值可以指示块中的噪声的可感知性。 可以使用归一化活动值和/或块的纹理值来计算掩模值。 与图像和/或视频中的活动相比，归一化活动值可以指示块中的相对活动。 纹理值可以指示块中的边缘的强度和/或数量。
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公开(公告)号：US08779804B2
公开(公告)日：2014-07-15
申请号：US13708812
申请日：2012-12-07
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Lin Li
IPC: H03K3/00
CPC classification number: H03K19/00361 , G01R31/2621
Abstract: A high side driver circuit includes a driver stage having an input, an output, a first power terminal and a second power terminal, a transistor having a first power terminal, a second power terminal, and a control terminal coupled to the output of the driver stage, and a switch coupled between the second power terminal of the driver stage and the second power terminal of the transistor.
Abstract translation: 高侧驱动器电路包括具有输入端，输出端，第一电源端子和第二电源端子的驱动级，具有第一电源端子，第二电源端子和耦合到驱动器的输出端的控制端子的晶体管 并且耦合在驱动器级的第二电源端子和晶体管的第二电源端子之间的开关。
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公开(公告)号：US08686762B2
公开(公告)日：2014-04-01
申请号：US13483796
申请日：2012-05-30
Applicant: Ni Zeng
Inventor： Ni Zeng
CPC classification number: H04L25/0264
Abstract: An LIN transmitter includes a current mirror coupled to a transmit output node and a control circuit coupled to a transmit input node for controlling the current mirror with various load current control signals.
Abstract translation: LIN发射机包括耦合到发射输出节点的电流镜和耦合到发射输入节点的控制电路，用于利用各种负载电流控制信号控制电流镜。
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Patent Agency Ranking
公开(公告)号：US08625725B2
公开(公告)日：2014-01-07
申请号：US13423585
申请日：2012-03-19
Applicant: Ni Zeng , Dasong Lin
Inventor： Ni Zeng , Dasong Lin
CPC classification number: H04L25/0292
Abstract: A LIN receiver circuit includes filtering circuitry receiving an input signal and producing a filtered signal, a first comparator comparing the filtered signal to a threshold voltage, and a driver block producing the receiver output signal. The receiver circuit further includes an input comparator, signal-adjusting circuitry, and deglitching circuitry. The input comparator detects a low voltage on the input signal, and the signal-adjusting circuitry drives the filtered signal to a particular value to shorten the length of a glitch at the output of the first comparator. Meanwhile, the deglitching circuitry detects and removes the glitch to produce a deglitcher output signal. The deglitcher output signal is received by the driver block, which outputs the receiver output signal, wherein the receiver output signal contains no glitches, and is delayed by no more than 7.5 μs, thus providing immunity to ISO pulses.
Abstract translation: LIN接收器电路包括接收输入信号并产生滤波信号的滤波电路，将滤波后的信号与阈值电压进行比较的第一比较器和产生接收器输出信号的驱动器块。 接收器电路还包括输入比较器，信号调节电路和去角化电路。 输入比较器检测输入信号的低电压，并且信号调节电路将滤波后的信号驱动到特定值以缩短第一比较器输出端的毛刺长度。 同时，除冰电路检测并去除毛刺以产生脱色器输出信号。 输出信号由驱动器块接收，驱动器块输出接收器输出信号，其中接收器输出信号不含毛刺，延迟不大于7.5微米，从而提供对ISO脉冲的抗扰度。
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公开(公告)号：US08624671B2
公开(公告)日：2014-01-07
申请号：US13313273
申请日：2011-12-07
Applicant: GuoHua Zhong , XiangSheng Li
Inventor： GuoHua Zhong , XiangSheng Li
IPC: H03F3/45
CPC classification number: H03F3/45475 , H03F1/305 , H03F3/183 , H03F3/187 , H03F3/45085 , H03F3/45968 , H03F2203/45138 , H03F2203/45528 , H03F2203/45544 , H03F2203/45586 , H03F2203/45588 , H03F2203/45594
Abstract: An amplifying circuit includes a first circuit component configured to receive and amplify first and second input voltages to generate an output voltage. The first circuit component is formed by a first amplifier and a second amplifier. A second circuit component is configured to provide a first offset current that is associated with a first input current of the first amplifier. The first offset current compensates for variation in the first input current. A third circuit component is configured to provide a second offset current that is associated with a second input current of the second amplifier. The second offset current compensates for variation in the second input current.
Abstract translation: 放大电路包括被配置为接收和放大第一和第二输入电压以产生输出电压的第一电路部件。 第一电路部件由第一放大器和第二放大器形成。 第二电路部件被配置为提供与第一放大器的第一输入电流相关联的第一偏移电流。 第一偏移电流补偿第一输入电流的变化。 第三电路部件被配置为提供与第二放大器的第二输入电流相关联的第二偏移电流。 第二偏移电流补偿第二输入电流的变化。
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138.发明申请VOLTAGE SLOPE CONTROL METHOD AND APPARATUS FOR POWER DRIVER CIRCUIT APPLICATION 有权电力斜坡控制方法及电机驱动电路的应用公开(公告)号：US20130313993A1
公开(公告)日：2013-11-28
申请号：US13888843
申请日：2013-05-07
Applicant: STMICROELECTRONICS (SHENZHEN) R&D CO. LTD.
Inventor： Meng Wang , Tao Tao Huang
IPC: H03K5/12
CPC classification number: H03K5/12
Abstract: A drive circuit includes a first transistor coupled in series with a second transistor at a first intermediate node coupled to a load. An amplifier has an output driving a control terminal of the second transistor. The amplifier includes a first input coupled to a second intermediate node and a second input coupled to a reference voltage. A feedback circuit is coupled between the first intermediate node and the second intermediate node. A slope control circuit is coupled the second intermediate node. The slope control circuit injects a selected value of current into the second intermediate node, that current operating to control the output of the amplifier in setting a slope for change in voltage at the first intermediate node.
Abstract translation: 驱动电路包括与耦合到负载的第一中间节点与第二晶体管串联耦合的第一晶体管。 放大器具有驱动第二晶体管的控制端的输出。 放大器包括耦合到第二中间节点的第一输入和耦合到参考电压的第二输入。 反馈电路耦合在第一中间节点和第二中间节点之间。 斜坡控制电路耦合第二中间节点。 斜坡控制电路将选择的电流值注入到第二中间节点中，该电流在设定第一中间节点处电压变化的斜率时控制放大器的输出。
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公开(公告)号：US20130169318A1
公开(公告)日：2013-07-04
申请号：US13708812
申请日：2012-12-07
Applicant: Stmicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Lin LI
IPC: H03K19/003
CPC classification number: H03K19/00361 , G01R31/2621
Abstract: A high side driver circuit includes a driver stage having an input, an output, a first power terminal and a second power terminal, a transistor having a first power terminal, a second power terminal, and a control terminal coupled to the output of the driver stage, and a switch coupled between the second power terminal of the driver stage and the second power terminal of the transistor.
Abstract translation: 高侧驱动器电路包括具有输入端，输出端，第一电源端子和第二电源端子的驱动级，具有第一电源端子，第二电源端子和耦合到驱动器的输出端的控制端子的晶体管 并且耦合在驱动器级的第二电源端子和晶体管的第二电源端子之间的开关。
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公开(公告)号：US20130169188A1
公开(公告)日：2013-07-04
申请号：US13648412
申请日：2012-10-10
Applicant: STMicroelectronics (Shenzhen) R&D Co. Ltd.
Inventor： Yijun Duan
CPC classification number: G01R19/12 , G01R19/16557 , H05B33/0845 , H05B33/0887
Abstract: A bidirectional voltage differentiator circuit comprises start-up circuitry, sensing circuitry, and output circuitry coupled to logic circuitry. The start-up circuitry acts to start-up the sensing circuitry when the circuit is powered on, and accelerates the response of the sensing circuitry thereafter. The sensing circuitry senses variation in an input voltage applied to an input node. Responsive to the voltage variation sensed by the sensing circuitry, the output circuitry produces a state change at a first or second output node. The logic circuitry receives the states of the output nodes and produces a logic output signal to indicate the occurrence of the variation sensed in the input voltage. The voltage sensing circuit is operable to sense variation of the input voltage regardless of whether the voltage is rising or falling and without regard to the DC value of the input voltage.
Abstract translation: 双向电压微分电路包括启动电路，感测电路和耦合到逻辑电路的输出电路。 启动电路用于在电路通电时启动感测电路，此后加速感测电路的响应。 感测电路感测施加到输入节点的输入电压的变化。 响应于由感测电路感测的电压变化，输出电路在第一或第二输出节点处产生状态改变。 逻辑电路接收输出节点的状态并产生逻辑输出信号以指示在输入电压中检测到的变化的发生。 电压感测电路可操作以感测输入电压的变化，而不管电压是上升还是下降，而不考虑输入电压的DC值。
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