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. 11, 1995
Filed:
Jul. 16, 1993
Akira Sogo, Hamamatsu, JP;
Akitoshi Saito, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A method and device for correcting an error in digital data in which data of one frame consists of bit assignment data and plural data each consisting of a bit number assigned by the bit assignment data comprises a step of substituting the plural data by noise data when an error has occurred in the bit assignment data. In one aspect of the invention, a method for correcting an error in digital data in which data of one frame consists of bit assignment data and plural data each consisting of exponential data assigned by the bit assignment data and mantissa data of a number of bits assigned by the bit assignment data, comprising a step of correcting the exponential data on the basis of a preceding frame or on the basis of both preceding and subsequent frame and substituting the mantissa data by noise data when an error has occurred in the bit assignment data. The noise data may be band-limited noise. When an irremediable error has occurred in digital data, generation of an extreme noise is prevented and deterioration of a reproduced tone is thereby prevented.