The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 1996
Filed:
Jan. 21, 1994
Etsuro Kishi, Sagamihara, JP;
Hisaaki Kawade, Yokohama, JP;
Kiyoshi Takimoto, Isehara, JP;
Koji Yano, Zama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An information recording/reproduction is performed as follows on a recording medium using a probe. A distance between the probe and a recording layer of the recording medium is controlled, and relative movement of the probe and the medium is effected so that the probe scans a surface of the recording layer. Recording bits corresponding to information is recorded or erased on the recording layer under a predetermined recording/erasing condition. The information is reproduced from the recording bits produced on the recording layer upon detection of a physical quantity such as a tunneling current, an electric field radiation current and the like generated between the probe and the recording layer. A characteristic/state such as an electrical characteristic, a surface state and the like of the recording layer is detected. The recording/erasing condition is corrected on the basis of the detected characteristic/state of the recording layer.