公开(公告)号：US4010422A

公开(公告)日：1977-03-01

申请号：US409425

申请日：1973-10-25

Applicant: Kornelis Jan Wouda

Inventor： Kornelis Jan Wouda

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

CPC classification number: 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

Abstract: 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.

公开(公告)号：US3935569A

公开(公告)日：1976-01-27

申请号：US397924

申请日：1973-09-17

Applicant: Francois Marcel ,  Alain Manoury

Inventor： Francois Marcel ,  Alain Manoury

IPC: H03M1/14 ,  H03M1/00 ,  H03K13/175

CPC classification number: H03M1/00 ,  H03M2201/01 ,  H03M2201/14 ,  H03M2201/16 ,  H03M2201/196 ,  H03M2201/2208 ,  H03M2201/3115 ,  H03M2201/3131 ,  H03M2201/4105 ,  H03M2201/4135 ,  H03M2201/4204 ,  H03M2201/4225 ,  H03M2201/4233 ,  H03M2201/4262 ,  H03M2201/52 ,  H03M2201/522 ,  H03M2201/523 ,  H03M2201/534 ,  H03M2201/60 ,  H03M2201/6121

Abstract: The invention concerns a digital coder subject to a compression law having multiple linear segments with slopes decreasing in geometrical progression having a ratio of 1/2, in which a chain of threshold detectors in a linear progression is used a first time to determine the number of the segment, then a second time to determine the position of the level on the segment.

Abstract translation: 本发明涉及经受压缩规律的数字编码器，该数字编码器具有多个线性段，其斜率以1/2的比例在几何级数上减小，其中使用线性进程中的阈值检测器链第一次来确定 该段，然后第二次确定段上的水平位置。