Title:
ABNORMALITY DETECTION METHOD, ABNORMALITY PROTECTION METHOD, DATA DETECTOR, AND DAC SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/082658
Kind Code:
A1
Abstract:
An abnormality detection method, an abnormality protection method, a data detector and a DAC system. The abnormality detection method for input data based on DAC is applied to detection of input data of a digital-to-analog converter. The method comprises: according to the sequence of input data of the digital-to-analog converter, after the number of the input data reaches a preset detection counting threshold, determining whether the number of zero-crossing points in the input data is abnormal or not, and determining whether signal energy of the input data is abnormal or not; and if the two determining results are both true, determining that the input data is abnormal. The abnormality protection method comprises: after determining that input data is abnormal, sending an interrupt signal to an external CPU, modifying an input data source, reconfiguring internal parameters of the digital-to-analog converter, and continuing to execute the abnormality detection method. The data detector is applied to a modular device for executing the abnormality detection method, and the DAC system comprises the data detector which is matched with the CPU to complete abnormality detection of the input data of the digital-to-analog converter.
Inventors:
WANG LILI (CN)
LIN LI (CN)
LIN LI (CN)
Application Number:
PCT/CN2020/110687
Publication Date:
May 06, 2021
Filing Date:
August 24, 2020
Export Citation:
Assignee:
AMICRO SEMICONDUCTOR CO LTD (CN)
International Classes:
G10L25/03; H03M1/10
Foreign References:
| CN110798213A | 2020-02-14 | |||
| CN108492837A | 2018-09-04 | |||
| CN109994127A | 2019-07-09 | |||
| CN105071810A | 2015-11-18 | |||
| US20060184359A1 | 2006-08-17 |
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