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:
Sep. 06, 2005
Filed:
Feb. 20, 2002
Makoto Akune, Tokyo, JP;
Yasuhiro Ogura, Kanagawa, JP;
Makoto Akune, Tokyo, JP;
Yasuhiro Ogura, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A normalizer normalizes the power of a dither signal calculated by a power calculator based on the average power of a PCM signal in the range of 18 kHz to 20 kHz, wherein the average power is calculated by the power calculator. An oversampling processor oversamples the PCM signal with a quantization frequency of 44.1 kHz and a quantization word length of 16 bits, wherein the PCM signal is inputted from an input terminal at a sampling frequency of 2×44.1 kHz, and then supplies an output of the oversampling process to an adder. The adder adds the normalized output from the normalizer to the oversampling output from the oversampling processor, and then supplies the addition output to an oversampling processor.