A.G.C. circuit for a video signal

Adaptive video centroid tracker

Amplifier back-ground control apparatus for use in a document sc

Animated dithered display systems

Animated dithered display systems

Anti-piracy method and system

Aperture correction circuit

Apparatus and method for embossing information on a disc

Apparatus for adjusting video pedestal and peak white level

Apparatus for automatic measurement of the video-signal-to-noise

Apparatus for embossing information on a disc

Apparatus for evaluating characteristics of the images of object

Apparatus for maintaining the position of a working head in rela

Apparatus for making printing masters

Apparatus for optically reading a radiation-reflecting record ca

Apparatus for optically reading a record carrier by means of an

Apparatus for reading a disk-shaped record carrier to be played

Apparatus for reading a record carrier on which information is r

Apparatus for reading a record carrier on which information is s

Apparatus for reading a record carrier with an optical informati