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:
Oct. 06, 2009
Filed:
Mar. 10, 2003
Takehiro Moriya, Nerima-ku, JP;
Akio Jin, Kokubunji, JP;
Kazunaga Ikeda, Fujisawa, JP;
Takeshi Mori, Higashiyamato, JP;
Takehiro Moriya, Nerima-ku, JP;
Akio Jin, Kokubunji, JP;
Kazunaga Ikeda, Fujisawa, JP;
Takeshi Mori, Higashiyamato, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A down samplerdown samples a digital signal in the sampling frequency thereof from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is compression encoded and output as a main code Im. An up samplerconverts a partial signal corresponding to the main code Im to a signal having the original sampling frequency 96 kHz, for example. An error signal between the up sampled signal and an input digital signal is generated. An array converting and encoding unitarray converts bits of sample chains of the error signal, thereby outputting an error code Pe. On a decoding side, a high fidelity reproduced signal is obtained based on the main code Im and the error code Pe, or a reproduced signal is obtained based on the main code Im only.