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:
Jan. 02, 2001
Filed:
Mar. 25, 1998
Kyoya Tsutsui, Kanagawa, JP;
Osamu Shimoyoshi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
An encoding method and apparatus and a decodings method and apparatus in which the encoded information is decreased in volume and in which the encoding and decoding operations are performed with a smaller processing volume and a smaller buffer memory capacity. The apparatus includes a low range signal splitting circuit for separating low-range side signal components from L and R channel signals converted by a transform circuit into spectral signal components, and a channel synthesis circuit for synthesizing (L+R) channel signal components from the L and R channel spectral signal components. The apparatus also includes a high range signal separating circuit for separating the high range side signal components from the (L+R) channel signal components, a signal component encoding circuit for compression-encoding low-range side signal components and a signal component encoding circuit for compression-encoding the normalization coefficient information obtained on normalization of the (L+R) channel high-range signal components.