Overview

　Conventionally, a hard disk drive using a magnetic recording medium is widely used as an information recording and reproducing device capable of random access with high density and large capacity. To further increase the capacity of a hard disk drive, it is required to improve the recording density, but there is a problem that the recording information is disturbed by thermal disturbance of the magnetic medium. Therefore, a dielectric recording and reproducing device using a dielectric material has been proposed as one which can be expected to increase the density than magnetic recording. However, there is a problem that the reproduction speed of recorded data is in the order of Mbps, and it is necessary to improve the reproduction speed for practical application.
　The present invention has made it possible to provide a dielectric reproducing device and a dielectric recording and reproducing device capable of improving the reproduction speed. The present invention is characterized in that, when detecting the polarization state of each bit formed in a data recording layer composed of a dielectric material, the temperature of the bit detected by a heating means can be increased. As a result, since the nonlinear dielectric constant of each bit increases, it is possible to detect a reproduced signal having a large S/N ratio between the reproduced signal and the noise, thereby improving the reproduction speed of the data.

Performance Comparison

Product Application

① Cloud data centers,
② Scientific big data such as astronomy, genomics, and climate models,
③ Healthcare,
④ Ultra-large-capacity storage devices handling massive data volumes for autonomous driving, IoT, and similar applications.

Related Works

[1]　Heat-assisted ferroelectric reading for high-speed ferroelectric probe data storage,September 2025,127(10), DOI: 10.1063/5.0284899,Yasuo Cho,Kohei Yamasue

IP Data

IP No.　 ： WO2023/189452(US&JP patented, CN patent pending) 　
Inventor ： CHO Yasuo
keyword ： Recording devices, Dielectric reproducing devices, Dielectric recording and reproducing devices