Cascadia Digital video recorder Manual de usuario descargar pdf (Pagina 14)

CCTV Glossary

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stores it in memory. Multiplexers, fast scan transmitters, Quad compressors and even some of

the latest color cameras have built-in frame stores.

Frame switcher - Another name for a simple multiplexer, which can record multiple cameras on a

single VCR (and play back any camera in full screen) but does not have a mosaic image display.

Frame synchronizer - A digital buffer that, by storage and comparison of sync information to a

reference and timed release of video signals, can continuously adjust the signal for any timing

errors.

Frame transfer (FT) - Refers to one of the three principles of charge transfer in CCD chips. The

other two are interline and frame-interline transfer.

Frame-interline transfer (FIT) - Refers to one of the few principles of charge transfer in CCD

chips. The other two are interline and frame transfer.

Frequency - The number of complete cycles of a periodic waveform that occur in a given length of

time. Usually specified in cycles per second (Hertz).

Frequency modulation (FM) - Modulation of a sine wave or carrier by varying its frequency in

accordance with amplitude variations of the modulating signal.

Front porch - The blanking signal portion that lies between the end of the active picture

information and the leading edge of horizontal sync

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Cascadia Digital video recorder Manual de usuario Pagina 14