Subclass G09G covers arrangements for control of display devices characterised by the type of display device or its components, whilst H04N covers the acquisition and control of the picture signal which is intended for display.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:. Instruments for performing medical examinations of the interior of cavities or tubes of the body combined with television appliances. Controlling or regulating single-crystal growth by pulling from a melt, using television detectors.
Scanning a visible indication of a measured value and reproducing this indication at a remote place, e. Systems for the reproduction according to the above-mentioned step b of pictures comprising alphanumeric or like character forms and involving the generation according to the above-mentioned step a of picture-representative electric signals from a pre-arranged assembly of such characters, or records thereof, forming an integral part of the systems.
Systems for the direct photographic copying of an original picture in which an electric signal representative of the picture is derived according to the said step a and employed to modify the operation of the system, e.
Systems in which legible alphanumeric or like character forms are analysed according to step a of Note 1 to derive an electric signal from which the character is recognised by comparison with stored information. Systems for the transmission and reproduction of arbitrarily composed pictures in which the local light variations composing a picture MAY change with time, e.
