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. 29, 2002
Filed:
Sep. 08, 1999
Nozomu Ikeda, Tokyo, JP;
Akira Ogino, Tokyo, JP;
Takashi Kohashi, Tokyo, JP;
Yuji Kimura, Kanagawa, JP;
Hisayoshi Moriwaki, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed herein are an additional information superposition method and a video signal outputting apparatus, wherein the additional information superposition method for superposing additional information spectrum spread with spread codes synchronized with a vertical synchronizing signal on a second video signal for forming an image of an aspect ratio of N:n which is to be converted into and outputted as a first video signal for forming an image of another aspect ratio of M:m, comprising the steps of setting a size of a unit block before conversion in the second video signal based on a size of a unit block after conversion to which one chip of spread codes for despreading determined in advance is allocated and contents of a conversion process into the first video signal, and superposing the additional information spectrum spread with the spread codes of one chip allocated for each unit block before conversion having the set size in such a manner as to allow the additional information to be extracted from the first video signal.