公开(公告)号：US20020126028A1

公开(公告)日：2002-09-12

申请号：US10024466

申请日：2001-12-17

Applicant: STMicroelectronics S.r.I.

Inventor： Sandro Dalle Feste ,  Nadia Serina ,  Giovanni Cesura ,  Marco Bianchessi

IPC: H03M001/10

CPC classification number: H03M3/344 ,  H03M3/46

Abstract: A test signal with given spectral characteristics is injected at input to the quantizer stage of the converter. The same test signal is subjected to cross-correlation with a given signal so as to generate coefficients used for filtering the quantization noise converted into digital form. In this way, a compensation signal is obtained that is applied to the output signal of the quantizer stage jointly with a first compensation signal obtained by applying, to the quantization noise converted into digital form, the same transfer function 28) of the converter. In this way a signal is obtained which, in addition to being used as the global output signal of the converter, is also used for the aforesaid operation of cross-correlation with the test signal.

Abstract translation: 具有给定频谱特性的测试信号在输入端被注入到转换器的量化器级。 相同的测试信号经受与给定信号的互相关，以便产生用于滤波转换为数字形式的量化噪声的系数。 以这种方式，获得补偿信号，该补偿信号与通过将转换成数字形式的量化噪声相同的传递函数28获得的第一补偿信号一起应用于量化器级的输出信号。 以这种方式，获得了除了用作转换器的全局输出信号之外，还用于上述与测试信号互相关的操作的操作的信号。