Title:
SIGNAL COMPRESSION DEVICE, SIGNAL RESTORATION DEVICE, AND SIGNAL PROCESSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/162588
Kind Code:
A1
Abstract:
A measurement signal processing unit (20) comprises: a reception part (21) for receiving a compression signal y acquired, by using an observation matrix Φ, from a time-series detection signal of a measurement target; and a restoration part (22) for restoring the received compression signal y. The restoration part (22) comprises a dictionary matrix Ψ including the observation matrix Φ and a past signal of the measurement target, obtains an estimation vector ^s by inputting the compression signal y and a sensing matrix θ to a restoration algorithm execution module (221), and derives a restoration signal ^x corresponding to a detection signal x by inputting, to a calculation module (222) for obtaining a product, the obtained estimation vector ^s and the dictionary matrix Ψ. Accordingly, restoration with high accuracy and at a high speed is performed by applying, to the dictionary matrix, a past signal of the signal of the same type as the target signal.
Inventors:
KANEMOTO DAISUKE (JP)
NAGAI KOTARO (JP)
NAGAI KOTARO (JP)
Application Number:
PCT/JP2023/002981
Publication Date:
August 31, 2023
Filing Date:
January 31, 2023
Export Citation:
Assignee:
UNIV OSAKA (JP)
International Classes:
G08C17/00; H03M7/30
Foreign References:
| JP2021115429A | 2021-08-10 | |||
| US20120063689A1 | 2012-03-15 | |||
| US20110222781A1 | 2011-09-15 |
Other References:
KANEMOTO DAISUKE; KATSUMATA SHUN; AIHARA MASAO; OHKI MAKOTO: "Framework of Applying Independent Component Analysis After Compressed Sensing for Electroencephalogram Signals", 2018 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (BIOCAS), IEEE, 17 October 2018 (2018-10-17), pages 1 - 4, XP033483293, DOI: 10.1109/BIOCAS.2018.8584829
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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