Patent №
US 5,777,977
Granted
1998-07-07
Filed 1996
Owner
SONY CORPORATION
Lab
—
AI components
1
hardware
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
08701687
A recording and reproducing apparatus has a recording and/or reading head having a tip for recording and/or reproducing information on and/or from a recording medium. Information is recorded and/or erased by way of a polarization reversal or transport of electric charges in a predetermined area of the recording medium in response to application of a pulse voltage from the head. The information recorded in the predetermined area is detected as a change in the electric charges or an electrostatic capacitance or a surface potential or their differential in the predetermined area for reproducing the information.
AI classification
Ownership
SONY CORPORATION
assignment · 82470944
Assignors
FUJIWARA, ICHIRO, MACHIDA, AKIO, KOJIMA, SHIGERU
On an employer assignment, the assignors are typically the inventors.