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. 05, 1993
Filed:
Dec. 06, 1990
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A television signal multiplexing and demultiplexing system includes a signal separation circuit for separating from a composite color television signal a plurality of first television signals serving as additional information for making the quality of a television picture higher and a second television signal. A matrix operation circuit performs a vertical matrix operation on the first television signals so as to dispose each of the first television signals in a different vertical band, thereby producing operation outputs. A delay circuit delays the operation outputs by different amounts of delay to produce delayed outputs. A multiplexing circuit multiplexes the delayed outputs on different horizontal scanning lines of the second television signal to produce a multiplexed output. A demultiplexing circuit demultiplexes the multiplexed output into the operation outputs and the second television signal. A recovering circuit recovers the first television signals by performing a matrix operation which is the inverse of the matrix operation on the separated operation outputs to recover the first television signal.