between the camera’s scanning and the lighting conditions.
GENLOCK
A state in which devices are locked to a signal output by a sync generator. Genlock allows multiple devices to operate in synchronization.
HDSDI signal
Abbreviation for High Definition Serial Digital Interface.
This is an uncompressed digital component video signal as specified by SMPTE 292M.
Horizontal resolution
The horizontal resolution of the screen, which is expressed as the number of vertical lines distinguishable when shooting a test chart.
Hunting
Repeated brightening and darkening of an image resulting from repeated response to automatic iris control.
i.LINK
Another name for the IEEE1394- 1995 standards and their revisions. On devices from other manufacturers, the 
(i.LINK) DV OUT S400 connector may be called a “FireWire port”, or indicated as IEEE 1394 or DV IN/OUT. XDCAM HD uses the i.LINK interface to transfer DV streams by the AV/C protocol, and toread and write MPEG IMX and DVCAM data files by FAM (File Access Mode).
Interlaced scan mode
A scanning method in which odd rows fields are read alternately with even rows.
IRE scale
International Radio Engineers scale. A scale of values that defines the brightness level of a video signal. The IRE is now the IEEE (Institute of Electrical and Electronic Engineers).
Metadata
Information about the properties of video and audio content. XDCAM records metadata such as UMIDs and
essence marks, and the supplied
MXF
Material eXchange Format. A file exchange format developed by the
ND filter
ND is an abbreviation of Neutral Density. An optical filter that reduces the incident light uniformly across the whole wavelength range, without affecting the color rendering of the subject.
A mode of advancing timecode which ignores the difference in frame values between real time and the timecode. Using this mode produces a difference of approximately 86 seconds per day between real time and timecode, which causes problems when editing programs in units of seconds using the number of frames as a reference.
General term for audio signals other than linear PCM, such as Dolby E and Dolby Digital
1) Dolby is a trademark of Dolby Laboratories.
NTSC
Abbreviation for National Television System Committee. NTSC is a color TV broadcasting system adopted mainly in North American countries, and in parts of Asia and Central and South America.
PAL
Abbreviation for Phase Alternating Line. PAL is a color TV broadcasting system developed by Telefunken GmbH of Germany. This system is adopted mainly in European countries, in Australia, and in parts of Asia and South America.
Progressive scan mode
A scanning method in which odd rows and even rows are read at the
same time. Also called
Proxy AV data
Reference video signal
A video signal that contains a sync signal or sync and burst signals, used as a reference for synchronization of video equipment.
Return video
Video signals that are sent back from a VTR to a camera or from a control console to a camera so that a camera operator can verify the recorded/ selected video signals.
Sampling frequency
A method used to sample an analog signal so that it can be represented digitally. The higher the sampling frequency is, the more accurately the
SDSDI signal
Standard Definition Serial Digital Interface. An interface standardized as SMPTE 259M which enables the transmission of an uncompressed digital component stream.
Shot data
Data recorded, while shooting, in the color bars, the user bits data of VITC, and so forth. Includes the model name, serial number, date, time, shot number, and ID1 to ID4.
Shutter speed
The time that the shutter is open. Slow shutter speeds give bright images, but motion resolution is lower.
SMPTE
Society of Motion Picture and Television Engineers, a professional association established in the U.S.A. mainly for the purpose of setting forth motion picture and television engineering standards.
182 Glossary