公开(公告)号：US5075678A

公开(公告)日：1991-12-24

申请号：US662403

申请日：1991-02-28

Applicant: Thomas Ohlsson ,  Bo Hjorth

Inventor： Thomas Ohlsson ,  Bo Hjorth

IPC: A61B5/0428 ,  A61B5/0476 ,  H03H17/02 ,  H03M1/12 ,  H03M1/18 ,  H03M1/20

CPC classification number: H03M1/183 ,  H03M1/201

Abstract: A method for analog-to-digital conversion includes the steps of applying a first transfer function to the input signal and amplifying the input signal by a defined gain factor to obtain an edited signal, subject chronologically successive samples of both the input signal and the edited signal to analog-to-digital conversion and thereby obtaining digital data having a defined number of bits corresponding to the input signal and digital data having a defined number of bits corresponding to the edited signal, multiplying the digital data corresponding to the input signal by a defined factor equal to the gain factor, applying a second transfer function to the digital data corresponding to the input signal by digital filtering, and undertaking calculations on the signals obtained in this manner to obtain a final analog-to-digital conversion result. An apparatus operating according to this method is also disclosed.

Abstract translation: 一种用于模数转换的方法包括以下步骤：将第一传递函数应用于输入信号，并通过定义的增益因子放大输入信号，以获得编辑信号，按时间顺序输入信号和编辑的信号样本 信号到模数转换，从而获得具有对应于输入信号的定义数量的位的数字数据和具有与编辑信号相对应的定义的位数的数字数据，将对应于输入信号的数字数据乘以一 定义的因子等于增益因子，通过数字滤波对与输入信号对应的数字数据应用第二传递函数，并对以这种方式获得的信号进行计算以获得最终的模数转换结果。 还公开了根据该方法操作的装置。

公开(公告)号：US4550309A

公开(公告)日：1985-10-29

申请号：US580584

申请日：1984-02-16

Applicant: Donald R. Hiller ,  Charles Kingsford-Smith

Inventor： Donald R. Hiller ,  Charles Kingsford-Smith

IPC: H03M1/14 ,  H03M1/00

CPC classification number: H03M1/201

Abstract: In a standard residue class analog-to-digital converter, pseudo-random noise is introduced at first or subsequent approximations of an analog input signal by the local digital-to-analog converter.

Abstract translation: 在标准残留类别的模拟 - 数字转换器中，通过本地数模转换器在模拟输入信号的第一个或其后续近似时引入伪随机噪声。