certain types of noise inherent to CCDs. See also CCD.

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. XDCAM uses the i.LINK interface to transfer DV streams by the AV/C protocol, and to read and write MPEG IMX and DVCAM data files by FAM (File Access Mode).

Interlaced scan mode (CCD output)

A scanning method in which odd rows fields are read alternately with even rows. (Odd-row fields and even- row fields contain images from different times.)

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 PDZ-1 Proxy Browsing Software PDZ-1 can be used to record information such as titles and comments.

MXF

Material eXchange Format. A file exchange format developed by the Pro-MPEG Forum. Equipment from different manufacturers can exchange files in this format.

ND filter

Neutral Density filter. ND filters reduce the amount of incident light equally across the entire visible wavelength range without affecting color.

Non-audio

General term for audio signals other than linear PCM, such as Dolby E and Dolby Digital (AC-3).1)

XDCAM can record non-audio as an input signal.

1) Dolby is a trademark of Dolby Laboratories.

Non-drop frame mode

A mode of advancing time code which ignores the difference in frame values between real time and the time code. Using this mode produces a difference of approximately 86 seconds per day between real time and time code, which causes problems when editing programs in units of seconds using the number of frames as a reference.

Progressive scan mode (CCD output)

A scanning method in which odd rows and even rows are read at the same time. Also called full-screen scanning.

Proxy AV data

Low-resolution data with a video bandwidth of 1.5 Mbps and an audio bandwidth of 64 Kbps per channel. This unit records proxy AV data automatically whenever high- resolution MPEG IMX or DVCAM data is recorded.

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

A video signal returned to a camera from a VTR, or a video signal selected from among several camera angles in a control room and returned to a camera so the cameraman can check the video.

SDI

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.

S/N

Signal-to-Noise ratio. The relation of the strength of the desired signal to the accompanying electronic interference, the noise. If S/N is high, sounds are reproduced with less noise and pictures are reproduced clearly without snow.

SNMP

Simple Network Management Protocol. XDCAM uses this protocol to monitor equipment operating status via network connectors.

Sub clip

One of the sections which make up a clip list. A sub clip may be part of a clip or an entire clip.

Thumbnail image

A reduced still picture of video for display on a GUI screen. XDCAM creates thumbnail images from proxy video, and displays them as index pictures on GUI screens.

Time code

A digitally encoded signal which is recorded with video data to identify each frame of the video by hour, minute, second and frame number. SMPTE time code is applied to NTSC system, and EBU time code to PAL and SECAM systems.

Time code synchronization

To synchronize the built-in time code generator of video equipment to an external time code.

Turbo gain

Video amplifier gain increased from 30 dB by 6 to 18 dB by combining adjacent pixels of the CCD.

Appendixes

Glossary 209