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:
Oct. 28, 1986
Filed:
Jul. 01, 1983
Paolo D'Amato, Turin, IT;
Rolando Salvadorini, Turin, IT;
Rai-Radio Televisione Italiana, Rome, IT;
Abstract
In order to improve the quality of color television signals for broadcasting via satellite, the signals are transmitted on two of the channels available for transmission via satellite according to the rules established by CCIR. In the case of transmission by means of a compatible system, the NTSC, or SECAM signal is transmitted on the first of the two channels and on the second channel there are transmitted the baseband R-Y and B-Y signals at from 0 to about 3 MHz sequentially on alternate lines and up to the limit of the video band the high frequency components of the luminance signal. In the case of transmission by means of a non-compatible system, there is transmitted on the first channel the luminance information in the whole available band and on the second channel the chrominance information R-Y and B-Y in the whole available band according to the following two alternatives: (1) the information is transmitted by means of a time division multiplex in which the first half of the active line is transmitted in one of the chrominance components and the second half in the other component; (2) the information is transmitted by means of a frequency sharing multiplex in which one of the components is transmitted in baseband, i.e. from 0 to about 3 MHz, and the other component is transmitted on an amplitude modulated subcarrier with single side band or vestigial band.