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    • 5. 发明授权
    • Automatic peaking control circuitry for a video processing system
    • 用于视频处理系统的自动峰值控制电路
    • US4069505A
    • 1978-01-17
    • US760366
    • 1977-01-19
    • Kenneth J. BurdickWilfred L. HandRobert C. WheelerPaul G. Wolfe
    • Kenneth J. BurdickWilfred L. HandRobert C. WheelerPaul G. Wolfe
    • H04N5/205H04N5/14H03K1/00H04N5/52
    • H04N5/205
    • A video processing system for a television receiver is shown. The video processing system includes a gain controlled stage through which a video signal is coupled. The gain of the stage is controlled to provide contrast control of the video signal. The video signal is also applied to an aperture correction circuit which develops an aperture correction signal including a pre-shoot transient responses. The aperture correction signal is also coupled through the gain controlled stage so that it is amplified or attenuated by the same amount as the video signal. An automatic peaking control circuit receives the pre-shoot and over-shoot signals to generate an automatic control signal to control the gain of the aperture correction circuit. A tracking control circuit causes the automatic peaking control circuit to accurately track the setting of an adjustable control which controls the gain of the aperture correction circuit. The output of the gain controlled stage is coupled to an output stage where the black level of the video signal is controlled by a black level control circuit. The disclosed video processing system is further adapted for fabrication in integrated circuit form.
    • 示出了用于电视接收机的视频处理系统。 视频处理系统包括一个增益控制级,视频信号通过该级连接。 控制舞台的增益以提供视频信号的对比度控制。 该视频信号也被应用于孔径校正电路,其开发包括预拍摄瞬态响应的孔径校正信号。 孔径校正信号也通过增益控制级耦合,使得其被放大或衰减与视频信号相同的量。 自动峰化控制电路接收预拍和过拍信号以产生自动控制信号以控制孔径校正电路的增益。 跟踪控制电路使得自动峰值控制电路精确地跟踪控制孔径校正电路的增益的可调整控制的设置。 增益控制级的输出耦合到输出级,其中视频信号的黑电平由黑电平控制电路控制。 所公开的视频处理系统进一步适于以集成电路形式制造。
    • 7. 发明授权
    • Automatic color level control system with threshold tracking
    • 具有阈值跟踪功能的自动色彩级别控制系统
    • US4106055A
    • 1978-08-08
    • US813086
    • 1977-07-05
    • Kenneth J. BurdickDouglas W. ConstableRobert C. Wheeler
    • Kenneth J. BurdickDouglas W. ConstableRobert C. Wheeler
    • H04N9/68H04N9/537
    • H04N9/68
    • A DC controlled amplifier is used to control the chrominance gain, and hence the color saturation, of a television receiver. The voltage on the wiper of a Color Control variable resistor and the output of an Automatic Color Level (ACL) detector are combined in a summing network to provide a DC voltage to the controlled amplifier. The ACL detector develops an output voltage that tends to maintain the peak-to-peak chrominance signal, and therefore the color saturation, at or below a threshold level. A control tracking circuit varies the threshold level in accordance with the voltage on the wiper of the color control variable resistor, thereby maintaining the dynamic range of the Automatic Color Level Control System relatively independent of the setting of the Color Control.
    • DC控制放大器用于控制电视接收机的色度增益,从而控制色饱和度。 色彩控制可变电阻器的刮水器上的电压和自动色彩(ACL)检测器的输出被组合在求和网络中,以向受控放大器提供直流电压。 ACL检测器产生趋于将峰值色度信号维持在或等于或低于阈值水平的颜色饱和度的输出电压。 控制跟踪电路根据彩色控制可变电阻器的擦拭器上的电压来改变阈值水平,从而使自动色彩级别控制系统的动态范围相对独立于色彩控制的设置。
    • 8. 发明授权
    • Capacitive sensor
    • 电容传感器
    • US07119551B2
    • 2006-10-10
    • US11250348
    • 2005-10-14
    • Kenneth J. Burdick
    • Kenneth J. Burdick
    • G01R27/26H03B5/08
    • G01D5/2417G01L9/0044G01L9/0072G01L9/12
    • An improved two loop capacitive sensor oscillator circuit converts a transducer capacitance to a frequency and includes a first loop to create an oscillatory waveform having a frequency related to a capacitance of the capacitive transducer. The first loop includes a resistor. The resistor is electrically coupled to a capacitor. The resistor is also electrically coupled to the capacitive transducer. The capacitive transducer is electrically coupled to an input of a first inverter gate. A second loop oscillates at the frequency of the first loop and further generates a second waveform of a substantially square wave shape at the same frequency. The second loop is electrically coupled to the first loop and the output of a third inverter gate is substantially a square wave at the frequency related to the capacitance of the capacitive transducer.
    • 改进的双回路电容传感器振荡器电路将换能器电容转换为频率,并且包括第一回路以产生具有与电容换能器的电容相关的频率的振荡波形。 第一个回路包括一个电阻。 电阻器电耦合到电容器。 电阻器也电耦合到电容式换能器。 电容式换能器电耦合到第一反相器门的输入端。 第二回路以第一回路的频率振荡,并且以相同的频率进一步产生大致方波形的第二波形。 第二回路电耦合到第一回路,并且第三反相器门的输出基本上是与电容换能器的电容相关的频率的方波。