Appendix

Glossary

Black burst signal

A reference signal used to achieve external synchronization (GenLock).

Color bars

A test signal which displays vertical colored stripes on a monitor. Used to adjust the hue and saturation of colors on video cameras and monitors.

Color matte

A color signal generated by this unit. The hue, saturation, and luminance of color mattes can be adjusted.

Compressor

A function which smoothly limits audio signals exceeding a certain threshold. Used to even out audio signals which contain large differences in amplitude.

Default gateway

A router or computer on a network which serves as an entrance to an outside network. Other computers in the network access the outside network via the default gateway.

Delay

A function which delays audio to bring it into synchronization with video, used when video is input later than the corresponding audio.

DHCP (Dynamic Host Configuration Protocol) A protocol for automatically assigning IP addresses to clients when they connect to a network, and recovering the addresses when they disconnect.

Dimmer

A function which slightly dims a picture or slightly lowers audio levels.

DNS (Domain NameSystem)

A system which allows Internet domain names to be translated into IP addresses.

Domain name

An identifier assigned to a group of computers and networks on the Internet. Domain names are delimited by periods (.), and arranged from the left in the order top level domain, second level domain, third level domain, and so forth.

Downstream key (DSK) A function which allows pictures to be composed by taking video to which an effect has already been applied and adding further images and text. It is called downstream key because this processing is done at the very end of the processing stream.

Embedded audio

Audio that is embedded into a video signal.

EMC (Electro-Magnetic Compatibility)

The properties of an electrical device of electromagnetic noninterference and electromagnetic immunity. Electromagnetic noninterference means that when the device operates it does not impair the operation of other devices, and does not act as a source of interference over a certain level that would be harmful to human health. Electromagnetic immunity is the property of electromagnetic susceptibility such that the device can operate without interference from electromagnetic radiation and so forth emitted by other devices.

Encode

To use compression technology to create streaming files with appropriate bitrates for different bandwidths.

Equalizer (EQ)

A function which controls specific audio frequencies in the high, mid, and low regions. Used to strengthen or delete specific frequencies in order to improve the audio.

ext3

A file system widely used with Linux, which adds a journaling function (allowing data changes to be handled as transactions) to the ext2 file system. It requires a shorter time to recover from hardware problems.

Fade to black (FTB)

An effect in which video fades out to a black screen.

Filter

A function which removes high or low frequencies. Used to remove cable noise and other kinds of noise.

Flip

Screen explanatory diagrams, including text, illustrations, graphics, and maps. A flip is displayed in the video and is used to explain the video content.

IEEE1394 (Institute ofElectrical and ElectronicsEngineers 1394)

Astandard for a high-speed serial bus for connection not only of computer peripherals, but also of digital devices to each other. Known as FireWire by Apple Computer, and as i.LINK by Sony Corporation.

FTB (Fade to Black)

See Fade to black

220 Glossary