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:
May. 13, 2014
Filed:
Jan. 23, 2009
Shigeaki Sasaki, Tokyo, JP;
Takeshi Mori, Tokyo, JP;
Hitoshi Ohmuro, Tokyo, JP;
Yusuke Hiwasaki, Tokyo, JP;
Akitoshi Kataoka, Tokyo, JP;
Kimitaka Tsutsumi, Tokyo, JP;
Shigeaki Sasaki, Tokyo, JP;
Takeshi Mori, Tokyo, JP;
Hitoshi Ohmuro, Tokyo, JP;
Yusuke Hiwasaki, Tokyo, JP;
Akitoshi Kataoka, Tokyo, JP;
Kimitaka Tsutsumi, Tokyo, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A coding method with a small error is provided. In the coding method of the present invention, a normalization value obtained from an input signal is corrected for an error calculated from an input and output in vector quantization and is then quantized. The coding method includes a normalization stage of normalizing the input signal in accordance with the normalization value of the input signal, calculated in each frame; a dividing stage of dividing the normalized frame into divided input signal sequences in accordance with a predetermined rule; a vector quantization stage of applying vector quantization to the divided input signal sequences to generate a vector quantization index; and a normalization value correction stage of correcting the normalization value of the input signal for the error obtained from the input and output in the vector quantization stage.