公开(公告)号：US06188264B1

公开(公告)日：2001-02-13

申请号：US09443047

申请日：1999-11-18

申请人： Tomoaki Masuta ,  Akira Kakinoki

发明人： Tomoaki Masuta ,  Akira Kakinoki

IPC分类号： H03K508

CPC分类号： H03K5/084

摘要： An automatic threshold level control circuit is provided which is capable of controlling the threshold level without causing the DUTY deterioration. The automatic threshold level control circuit comprises a timing detecting circuit 110a, used for preserving the peak voltage values of each input signals for input signals (ATCIN+ and ATCIN−) and for outputting the preserved voltage values as a reference signal for the threshold level of each input signal, and the automatic threshold level control circuit comprises a pair of peak value detecting circuits PD1 (62) and PD2 (64) for resetting the held voltage values into reference voltages Vref1 and Vref2 by reset signals PD1RST and PD1RST; and the timing detecting circuit 110a for detecting a predetermined timing and outputting the reset signals PD1RST and PD2RST to the peak value detecting circuits PD1 and PD2 for releasing the reset state in accordance with the detected timing.

摘要翻译： 提供一种自动阈值电平控制电路，其能够控制阈值电平而不引起DUTY恶化。自动阈值电平控制电路包括定时检测电路110a，用于保持输入信号的每个输入信号的峰值电压值（ ATCIN +和ATCIN-），并且用于输出保存的电压值作为每个输入信号的阈值电平的参考信号，并且自动阈值电平控制电路包括一对峰值检测电路PD1（62）和PD2（64），用于 通过复位信号PD1RST和PD1RST将保持电压值复位为参考电压Vref1和Vref2; 以及定时检测电路110a，用于检测预定定时，并将复位信号PD1RST和PD2RST输出到峰值检测电路PD1和PD2，以根据检测到的定时解除复位状态。