公开(公告)号：US3936819A

公开(公告)日：1976-02-03

申请号：US322333

申请日：1973-01-10

申请人： Philippe Angelle ,  Georges Lefevre

发明人： Philippe Angelle ,  Georges Lefevre

IPC分类号： H03M1/40 ,  G11C27/02 ,  H03F3/72 ,  H03G3/20 ,  H03M1/00 ,  H03K13/02

CPC分类号： H03M1/00 ,  G11C27/026 ,  H03F3/72 ,  H03M2201/01 ,  H03M2201/14 ,  H03M2201/16 ,  H03M2201/2241 ,  H03M2201/2283 ,  H03M2201/4105 ,  H03M2201/4135 ,  H03M2201/4204 ,  H03M2201/4212 ,  H03M2201/4233 ,  H03M2201/4262 ,  H03M2201/534 ,  H03M2201/712 ,  H03M2201/715 ,  H03M2201/8124

摘要： An electronic device for amplifying, with automatic gain control by discr values, analogue signal samples and thereafter preferably effecting analogue-to-digital conversion of the samples, consists of an amplifier circuit, a comparator circuit, and a delay store circuit. The amplifier has a basic gain during a gain control or gain ranging operation, and supplies an output sample amplified with sufficient gain to bring it into the region of a predetermined voltage. The comparator circuit compares the output of the amplifier circuit with a reference and supplies an output in accordance with the result of the comparison. For analogue-to-digital conversion the amplifier circuit supplies for an input signal U an output signal 2U - VQ, where VQ is the quantification voltage, or, in other embodiments a signal 2U.

摘要翻译： 用于通过离散值的自动增益控制来放大模拟信号样本的电子装置，其后优选地进行样本的模数转换，由放大器电路，比较器电路和延迟存储电路组成。 放大器在增益控制或增益测距操作期间具有基本增益，并且以足够的增益提供放大的输出样本，使其进入预定电压的区域。 比较器电路将放大器电路的输出与参考值进行比较，并根据比较结果提供输出。 对于模拟到数字转换，放大器电路为输入信号U提供输出信号2U-VQ，其中VQ是量化电压，或者在其它实施例中为信号2U。

公开(公告)号：US4010422A

公开(公告)日：1977-03-01

申请号：US409425

申请日：1973-10-25

申请人： Kornelis Jan Wouda

发明人： Kornelis Jan Wouda

IPC分类号： H03M1/00 ,  H04B14/04 ,  H04B1/04

CPC分类号： H04B14/04 ,  H03M1/00 ,  H04B14/048 ,  H03M2201/01 ,  H03M2201/14 ,  H03M2201/16 ,  H03M2201/196 ,  H03M2201/2344 ,  H03M2201/4105 ,  H03M2201/4135 ,  H03M2201/4204 ,  H03M2201/4212 ,  H03M2201/4225 ,  H03M2201/4233 ,  H03M2201/425 ,  H03M2201/4262 ,  H03M2201/52 ,  H03M2201/523 ,  H03M2201/534 ,  H03M2201/60 ,  H03M2201/6121 ,  H03M2201/712 ,  H03M2201/715 ,  H03M2201/8124

摘要： A non-linear pulse code modulator wherein input signals are coded into digital representations of amplitude range segments and amplitude in excess of the minimum amplitude within the respective range segment uses a first analog-to-digital converter having a sawtooth-shaped control characteristic to determine the amplitude range segment from an input signal sample. The output of the first analog-to-digital converter is used to effectively divide the signal sample by a factor 2.sup.n, where n corresponds to the determined range. The result of the division is then converted in a second analog-to-digital conversion to a digital signal that is combined with the digital range segment signal for transmission thereof.