Thomson Video Equipement

Thomson Broadcast

Gerard Desmons

Jean Noel Fauquet

Optical connection system and its use in the transmission of video

A combined electric/optic cable has a triaxial cable having, along one and the same central axis, three imbricated, concentric, tubular, electric conductors and a central optic fiber. The present invention may find particular application in high definition television systems.

Combined electric/optic cable and application thereof to the link

The optical sight for the correction of the geometry of the convergences of a color camera according to the invention is such that it is adapted to the two most common formats and therefore usable in bi-format 4/3 and 16/9 cameras: the sight is constituted of a group of elementary motifs constituted of a central zone of n lines of p motifs and adjacent zones formed of two lines of p motifs used in addition to the central zone for the 4/3 format, and two columns of n motifs, used in addition to the central zone for the 16/9 format.

Optical sight for television camera with automatic geometry and

A device for correcting shading in video signals which has conventionally occurred due to variations in speeds of the scanning spots. Speeds of the scanning spot are detected, and variations in these speeds are also detected. In addition, conventional-type digital correction values for correcting geometry and convergence errors are produced. Variations in speed are detected, and are digital-to-analog converted. A shading output correction signal indicative of a sweep speed variation is produced. This signal is added to the digital correction values to form a corrected correction value.

Growing community of inventors

Clichy, France

Gerard Desmons