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. 10, 1997
Filed:
Aug. 15, 1995
Toshiharu Kuwaoka, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
N-bit digital signals are transformed into M-bit digital signals (M>N), the N-bit signals being obtained by converting an analog signal into digital signals. Detected are transition points on a time axis and intervals between the transition points at which successive digital signals of the N-bit signals vary. (M-N) bit additional signals are generated which correct errors of the N-bit signals within a range of .+-.0.5 least significant bit of the N-bit signals in response to the transition points and the intervals. The additional signals are delayed so as to correspond to least significant bit of the N-bit signals. The delayed additional signals are combined with the N-bit signals to generate the M-bit signals. Instead of the transition points and intervals, detected are transition patterns of successive digital signals of the N-bit signals over transition points. (M-N) bit additional signals are generated which correct errors of the N-bit signals within a range of .+-.0.5 least significant bit of the N-bit signals based on the transition patterns. The additional signals are combined with the N-bit signals so that the additional signals correspond to the least significant bit of the N-bit signals, to generate the M-bit signals.