Description
This class deals with generating, processing, transmittingor transiently displaying a sequence of images, eitherlocally or remotely, in which the local light variationscomposing the images may change with time (e.g., natural"live" scenes) by methods involving the following steps:
Step 1. The scanning of an object or a scene bypartitioning the object or scene into subareas of image information (e.g., pelsor pixels) and generating therefrom an electrical signalrepresentative of an image.
Step 2. The transient display of an object or ascene image by converting an electrical signal representative ofthe object image (i.e., videosignal) into a visible image of the object.
In this class, the sequence of images is intendedto portray motion with exception of special television type systemsthat produce a sequence of still images from a conventional televisionsystem (e.g., videophone, slow scan, filmretrieval, and security systems). Thesespecial television systems normally select an image from a sequenceof images of a conventional television system and normally use atransient display (e.g., CRTor liquid crystal).
Facsimile images are normally of a fixed scene (e.g., document) thatdo not form a sequence, cannot portray motion, andnormally the display is fixed (e.g., hard copy). (SeeReferences to Other Classes, below.)In television recording, the sequence of images are dynamicallyrecorded for later reproduction.
SUBCOMBINATIONS OF TELEVISION SYSTEMS
This class includes circuits specially designed for dealingwith a peculiar component of the television signal (e.g., syncor chrominance), as distinct from merely signalsof a particular frequency range.
Electrical circuits that are not specific to television whichmay constitute subcombinations of such apparatus are classifiedin the appropriate class for such circuits.
For a video camera or television receiver having a static storagedevice as subcombination, see Subclass References to theCurrent Class, below.