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公开(公告)号：US5473390A
公开(公告)日：1995-12-05
申请号：US382223
申请日：1995-01-31
CPC分类号： H04N9/641
摘要： A bias source (R7,R8,C24) connected to a summing amplifier (Q1) produces a first DC bias at the amplifier input (emitter) and a second DC bias at the amplifier output (collector). A first circuit node (B) is AC coupled (22) to a luminance signal source (Y1, 18), DC coupled via a first resistor (R4) to the input of the summing amplifier and DC coupled via a first amplifier (28) to a luminance load (Y3,30). A second circuit node (A) is AC coupled (20) to a chrominance signal source (C1,18), DC coupled via a second resistor (R3) to the input (emitter, Q1) of the summing amplifier and DC coupled via a second amplifier (26) to a chrominance signal load (C3,30). A third amplifier (Q2) provides DC coupling of the output of the summing amplifier (Q1) to a composite video signal load (E,40). Advantageously, the circuit provides component to composite conversion with plural buffered outputs which may exhibit different power gains, which are stable notwithstanding load impedance variations and which are DC biased by bias produced at the summing amplifier input as well as its output thereby simplifying the conversion and buffering.
摘要翻译： 连接到求和放大器（Q1）的偏置源（R7，R8，C24）在放大器输入（发射极）处产生第一直流偏置，在放大器输出端（集电极）产生第二直流偏置。 第一电路节点（B）被交流耦合到亮度信号源（Y1,18），经由第一电阻器（R4）耦合到加法放大器的输入端，并且经由第一放大器（28）耦合直流耦合， 到亮度负载（Y3,30）。 第二电路节点（A）被AC耦合（20）到色度信号源（C1,18），经由第二电阻器（R3）耦合到加法放大器的输入（发射极，Q1），并经由 第二放大器（26）到色度信号负载（C3,30）。 第三放大器（Q2）提供加法放大器（Q1）的输出到复合视频信号负载（E，40）的直流耦合。 有利地，电路提供具有多个缓冲输出的组件到组合转换，其可以呈现不同的功率增益，尽管负载阻抗变化是稳定的，并且通过在加法放大器输入端产生的偏置直流偏置以及其输出，从而简化了转换， 缓冲。
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2.发明授权Compensator for temperature-induced black level drift for use in a television receiver 失效用于电视接收机的温度感应黑电平漂移的补偿器
公开(公告)号：US4945414A
公开(公告)日：1990-07-31
申请号：US193430
申请日：1988-05-12
CPC分类号： H05K1/0201 , H04N5/57 , H05K2201/10022 , H05K2201/10151 , H05K2201/10522 , H05K2201/10689
摘要： A temperature compensation network for an integrated circuit amplifier in a television receiver includes a thermistor mounted physically adjacent to, and electrically connected in parallel with the brightness control potentiometer, to the brightness control terminal of the integrated circuit. By mounting the thermistor in close proximity to the integrated circuit to be controlled, the thermistor is able to compensate for both self-heating of the integrated circuit and ambient temperature variations.
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公开(公告)号：US5245434A
公开(公告)日：1993-09-14
申请号：US887745
申请日：1992-05-22
申请人： Thomas D. Gurley
发明人： Thomas D. Gurley
摘要： A TV system includes a selectively enabled blanking network for introducing blanking into the autopix feedback loop during vertical blanking periods. The TV system includes a contrast control section responsive to color signals whose output is coupled to a brightness control section. Outputs of the brightness control section are combined via a combining means to produce a "combined signal" representative of the luminance component of the image to be displayed. The "combined signal", which is not "blanked" during the vertical blanking (retrace) period, is coupled via a feedback loop which includes a peak detector and a comparator to the input of the contrast control section for controlling its response to the color signals. The selectively enabled blanking network is coupled to the input of the peak detector in the feedback loop for limiting the propagation of the "combined signal" via the feedback loop during vertical blanking intervals.
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公开(公告)号：US4575650A
公开(公告)日：1986-03-11
申请号：US518461
申请日：1983-07-29
IPC分类号： H03H11/04 , H03K5/1252 , H03K19/003 , H03K5/00
CPC分类号： H03K5/1252 , H03H11/04 , H03K19/00353
摘要： A signal voltage from a signal processing path is coupled via an interfacing terminal to an input port of a filter, the output port of which is connected to the base input of a current source transistor to supply thereto a signal voltage which exhibits the filter transfer function. The collector output of the current source transistor is also coupled to the interfacing terminal and conducts a current exhibiting the filter transfer function to the signal path via the interfacing terminal. The base input of the current source transistor is driven with filter output sigals via a low output impedance voltage source (e.g., an emitter follower stage). The impedance presented to the base of the transistor is primarily determined by the low output impedance of the voltage source.
摘要翻译： 来自信号处理路径的信号电压经由接口端子耦合到滤波器的输入端口，滤波器的输出端口连接到电流源晶体管的基极输入端以向其提供呈现滤波器传递函数的信号电压 。 电流源晶体管的集电极输出也耦合到接口端子，并且经由接口端子将表现出滤波器传递函数的电流传导到信号路径。 电流源晶体管的基极输入通过低输出阻抗电压源（例如，射极跟随器级）由滤波器输出信号驱动。 呈现给晶体管基极的阻抗主要取决于电压源的低输出阻抗。
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公开(公告)号：US5585755A
公开(公告)日：1996-12-17
申请号：US517174
申请日：1995-08-21
申请人： Charles M. White , Thomas D. Gurley
发明人： Charles M. White , Thomas D. Gurley
CPC分类号： H03F3/19 , H03F3/45098 , H03F2203/45472 , H03F2203/45594 , H03F2203/45654 , H03F2203/45664 , H03F2203/45702
摘要： Audio bus receiver includes a pair of bipolar transistors each having a base coupled via a respective resistor to a respective bus receiver input terminal, each having an emitter that is diode coupled to a respective current source and each having a collector coupled via a respective load resistor to a source of reference potential. The emitters are coupled together via a gain control resistor and the collectors are coupled to an output terminal via a differential amplifier. Advantageously, the receiver avoids loading the bus under power-down conditions without requiring the use of stand-by power supplies. Additionally, high common mode rejection is achieved without need for precision matching of components and only a single supply voltage is required for operation.
摘要翻译： 音频总线接收机包括一对双极晶体管，每个双极晶体管具有经由相应的电阻器耦合到相应的总线接收器输入端子的基极，每个具有发射极，二极管耦合到相应的电流源，并且每个具有经由相应负载电阻器耦合的集电极 参考潜力的来源。 发射极通过增益控制电阻耦合在一起，集电极通过差分放大器耦合到输出端。 有利地，接收器避免在掉电条件下加载总线，而不需要使用备用电源。 另外，实现了高共模抑制，而不需要组件的精密匹配，并且仅需要单个电源电压来进行操作。
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公开(公告)号：US4745477A
公开(公告)日：1988-05-17
申请号：US882560
申请日：1986-07-07
申请人： Isaac M. Bell , Thomas D. Gurley
发明人： Isaac M. Bell , Thomas D. Gurley
IPC分类号： H04N5/08
CPC分类号： H04N5/08
摘要： A synchronizing pulse separator for a video apparatus provides horizontal and vertical synchronizing pulses from a composite video signal. The sync separator incorporates a compensation circuit that achieves noise immune operation with composite video signals that provide progressive field display and consequently lack synchronization equalizing pulses. The compensation circuit maintains a sufficient bias level on the sync separator transistor during the vertical blanking interval to prevent premature triggering of the vertical deflection circuit due to noise.
摘要翻译： 用于视频装置的同步脉冲分离器从复合视频信号提供水平和垂直同步脉冲。 同步分离器包括一个补偿电路，通过复合视频信号实现噪声免疫操作，提供渐进式场显示，因此缺少同步均衡脉冲。 在垂直消隐间隔期间，补偿电路在同步分离器晶体管上保持足够的偏置电平，以防止由于噪声引起的垂直偏转电路的过早触发。
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公开(公告)号：US08588687B2
公开(公告)日：2013-11-19
申请号：US12905453
申请日：2010-10-15
IPC分类号： H04B7/00
CPC分类号： H04W72/1215 , A61B5/14532 , A61M5/14244 , A61M5/1723 , A61M2205/3592 , A61M2230/201 , H04W84/10 , H04W88/06
摘要： A handheld diabetes management device having a plurality of communication modules for communicating with a plurality of medical devices via a shared antenna or multiple antennas, where the handheld diabetes management device includes a first communication module, a second communication module, and an arbitration module. The first communication module selectively communicates in a first frequency band with an insulin infusion pump external to the handheld diabetes management device via a first antenna using a first wireless communication protocol. The second communication module selectively communicates in the first frequency band with a continuous glucose monitor external to the handheld diabetes management device via a second antenna or the first antenna using a second wireless communication protocol. The arbitration module grants permission to communicate to the first communication module and denies permission to communicate to the second communication module when the first and second communication modules request permission to communicate concurrently.
摘要翻译： 一种手持式糖尿病管理装置，其具有多个通信模块，用于经由共享天线或多个天线与多个医疗装置进行通信，其中所述手持式糖尿病管理装置包括第一通信模块，第二通信模块和仲裁模块。 第一通信模块通过使用第一无线通信协议的第一天线，在第一频带选择性地与手持式糖尿病管理装置外部的胰岛素输注泵进行通信。 第二通信模块通过第二天线或使用第二无线通信协议的第一天线，选择性地在第一频带与手持式糖尿病管理装置外部的连续葡萄糖监测器通信。 当第一和第二通信模块请求同时通信的许可时，仲裁模块授权与第一通信模块通信并拒绝与第二通信模块通信的许可。
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公开(公告)号：US20120095311A1
公开(公告)日：2012-04-19
申请号：US12905453
申请日：2010-10-15
IPC分类号： A61B5/145
CPC分类号： H04W72/1215 , A61B5/14532 , A61M5/14244 , A61M5/1723 , A61M2205/3592 , A61M2230/201 , H04W84/10 , H04W88/06
摘要： A handheld diabetes management device having a plurality of communication modules for communicating with a plurality of medical devices via a shared antenna or multiple antennas, where the handheld diabetes management device includes a first communication module, a second communication module, and an arbitration module. The first communication module selectively communicates in a first frequency band with an insulin infusion pump external to the handheld diabetes management device via a first antenna using a first wireless communication protocol. The second communication module selectively communicates in the first frequency band with a continuous glucose monitor external to the handheld diabetes management device via a second antenna or the first antenna using a second wireless communication protocol. The arbitration module grants permission to communicate to the first communication module and denies permission to communicate to the second communication module when the first and second communication modules request permission to communicate concurrently.
摘要翻译： 一种手持式糖尿病管理装置，其具有多个通信模块，用于经由共享天线或多个天线与多个医疗装置进行通信，其中所述手持式糖尿病管理装置包括第一通信模块，第二通信模块和仲裁模块。 第一通信模块通过使用第一无线通信协议的第一天线，在第一频带选择性地与手持式糖尿病管理装置外部的胰岛素输注泵进行通信。 第二通信模块通过第二天线或使用第二无线通信协议的第一天线，选择性地在第一频带与手持式糖尿病管理装置外部的连续葡萄糖监测器通信。 当第一和第二通信模块请求同时通信的许可时，仲裁模块授权与第一通信模块通信并拒绝与第二通信模块通信的许可。
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公开(公告)号：US5453798A
公开(公告)日：1995-09-26
申请号：US14156
申请日：1993-02-05
申请人： Charles M. White , Thomas D. Gurley
发明人： Charles M. White , Thomas D. Gurley
摘要： A driver for a cathode ray tube includes a black level compensation circuit which generates an offset voltage which tracks the current flowing to the output of the driver and therefore the average picture level (APL). The offset voltage is added as a component of the output voltage so as to increasingly shift the output voltage toward black as the APL increases. This compensates for CRT gamma non-linearities and for light scattering effects which might otherwise cause the loss of perceived detail and sharpness in dark areas of a high APL image. In the disclosed embodiment, the driver comprises a cascode amplifier and the offset voltage generating element includes a capacitively bypassed resistor connected in a reference voltage network connected to the emitter circuit of the lower (common emitter configured) transistor of the cascode amplilfier.
摘要翻译： 用于阴极射线管的驱动器包括黑电平补偿电路，其生成跟踪流向驱动器的输出的电流的偏移电压，并因此产生平均图像电平（APL）。 偏移电压作为输出电压的分量被添加，以便随APL增加而使输出电压逐渐向黑色移动。 这补偿了CRT伽马非线性和光散射效应，否则可能会导致高APL图像暗区的感知细节和锐度的损失。 在所公开的实施例中，驱动器包括共源共栅放大器，并且偏移电压产生元件包括连接到共源共栅放大器的下（共同发射极配置）晶体管的发射极电路的参考电压网络中的电容旁路电阻。
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公开(公告)号：US5115316A
公开(公告)日：1992-05-19
申请号：US694974
申请日：1991-05-03
IPC分类号： H04N17/04
CPC分类号： H04N17/04
摘要： A television receiver provides a noise-free set up signal by automatically selecting an unused baseband video input terminal, or an unused pair of SVIDEO input terminals. Selection of the unused terminals provides a D.C. level to the luminance path, and allows the horizontal oscillator to free-run. In addition to selecting an unused video input terminal, the subject apparatus automatically increases the brightness level a few steps to simulate a 7.5 IRE flat field (commonly known as set up). The above-listed steps may be performed manually by a service technician, for television receivers not incorporating apparatus for automatically performing the steps.
摘要翻译： 电视接收机通过自动选择未使用的基带视频输入端子或未使用的SVIDEO输入端子来提供无噪声设置信号。 未使用的端子的选择为亮度路径提供直流电平，并允许水平振荡器自由运行。 除了选择未使用的视频输入端子之外，被摄体装置自动地增加亮度水平，以模拟7.5IRE平场（通常称为设置）几步。 上述步骤可以由维修技术人员手动执行，对于不包括用于自动执行步骤的装置的电视接收机。
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