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:
Jun. 23, 1992
Filed:
Oct. 07, 1991
Kengo Sudoh, Higashihiroshima, JP;
Chitoku Kiyonaga, Higashihiroshima, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A data recording/reproducing apparatus can record/reproduce digital data because a parity check code is added to the data at the time of recording. The original data can be reproduced through error correction even though part of the data is lost at the time of reproducing. In the present recording and reproducing apparatus, data immediately after being recorded is read and the number of errors is detected by a parity check code. When the number of errors in the data is equal to or greater than a predetermined reference value, the data is re-recorded in another unit recording area. By setting the reference value at a value less than the maximum number of errors which can be corrected by parity check codes, data can be re-recorded without apprehension that the errors cannot be corrected because the increased number of errors has been caused by deterioration of the recording state of the unit recording area due to repetition of reproducing operations.