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:
Apr. 18, 1995
Filed:
Sep. 09, 1992
Yoshio Nakajima, Higashimurayama, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
After an error correcting code is added to a data to be recorded at recording, a data converting process, such as data rotation or data interchange is executed so as to exceed an error correcting ability when the data is reproduced at reproducing, and then the data is recorded on a recording medium. At the time of data reproducing, an inverse data converting process of the data converting process at the time of data recording is executed and then, errors are corrected to restore the data. In a case when the data converting process at reproducing does not coincide with the inverse data converting process at recording, errors exceeding the error correcting ability are generated in most of the cases. Thus, the information recording/reproducing apparatus of this invention has a function for protecting the data.