Title:
CONVERSION DEVICE, PERIPHERAL DEVICE AND PROGRAMMABLE CONTROLLER
Document Type and Number:
WIPO Patent Application WO/2014/068747
Kind Code:
A1
Abstract:
In order to achieve digital filtering that exhibits filter characteristics desired by a user while maintaining a high-speed A/D conversion cycle, an A/D conversion device (100) is equipped with: an input data storage section (131) for storing multiple A/D-converted digital values in such a manner that the digital values are respectively placed at fixed addresses that are relevant to delay amounts thereof; a coefficient data storage section (132); a coefficient data computation section (134) that, upon receiving input of a digital filtering execution request, computes a degree and filter coefficients on the basis of preset filter characteristics, arranges the respective computed filter characteristics in the order of the corresponding delay amounts, and stores the filter coefficients in the coefficient data storage section (132) in such a manner that the filter coefficients are placed at the fixed addresses that are relevant to the corresponding delay amounts; and a digital filter computation section (133) that reads the digital value from the input data storage section (131), and the filter coefficient from the coefficient data storage section (132), with respect to each delay amount and executes a filter computation based on the value for the delay amount that is read.
Inventors:
TOGANO KENTARO (JP)
Application Number:
PCT/JP2012/078331
Publication Date:
May 08, 2014
Filing Date:
November 01, 2012
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
TOGANO KENTARO (JP)
TOGANO KENTARO (JP)
International Classes:
H03M1/12; H03H17/06
Foreign References:
| JP2002304818A | 2002-10-18 | |||
| JPS6046126A | 1985-03-12 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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