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:
Jul. 09, 1996
Filed:
Mar. 16, 1994
Junichi Ohki, Tokyo, JP;
Toshio Koga, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A multiplex transmission method and apparatus for motion picture signals. A transmission line constituted by transmission channels having different carrier frequencies is prepared. One of the transmission channels has a transmission rate almost equal to the long-term average of information generation speeds in encoding an arbitrary motion picture signal. The input motion picture signal is encoded by using inter-frame and intra-frame correlations, and encoded information is output for each image channel. The image channels are related in one-to-one correspondence with the transmission channels having the different carrier frequencies. When an image channel of interest, of the image channels, exhibits a large generated information amount representing the encoded information generation speed within a time interval determined by a predetermined transmission rate of the transmission line in advance, adaptive multiplexing is performed by dividing and distributing the encoded information of the image channel of interest to the transmission channels including the transmission channel of the image channel of interest. The encoded information divided/distributed by the adaptive multiplexing is transmitted for each allocated transmission channel.