Glossary; Computer Terms; Video Terms; Camera Terms - Apollo Roadrunner Installation Manual

RoadRunner Installation Guide

Glossary

Computer Terms:

Bandwidth The available capacity of a system or connection. Usually much less than the published rating.
Encryption Processing and altering data so only the intended recipient can read or use it. The recipient of the encrypted data must have the proper
decryption key and program to decipher the data back to its original form.
IP Address Internet Protocol. A series of numbers that sets the address of a device on a network.
Network Digital connection between two or more devices.
HDD Hard Disk Drive. Can be in a computer or DVR
RS-232/RS-422 Computer communication standards used in video for the control of certain video equipment. Computer controlled VCRs, edit controllers,
switchers and other studio equipment can commonly be found in professional video studios. Successfully linking two devices, at the very
least requires that they use the same communication protocol.
Serial Port A computer l/O (input/output) port through which the computer communicates with the external world. The standard serial port uses
RS-232 or RS-422* protocols
Watermarking A pattern of bits inserted into a digital image, audio or video file that identifies the file's copyright information (author, rights, etc.) Unlike
printed watermarks, which are intended to be somewhat visible, digital watermarks are designed to be completely invisible, or in the case
of audio clips, inaudible. Moreover, the actual bits representing the watermark must be scattered throughout the file in such a way that
they cannot be identified and manipulated.

Video Terms:

Artifacts Visible distortion or blurriness due to compression in images
Compression The process of electronically processing a video picture to make it use less storage or to allow more video to be sent down a
transmission channel.
Examples:
ips images per second. The rate cameras are sampled at for recording.
Resolution 1. The number of pixels (individual points of color) contained on a display monitor, expressed in terms of the number of pixels on the
horizontal axis and the number on the vertical axis. Examples: 720 x 288 or 352 x 240
2. Rating of the fine detail of a TV picture, measured in scan lines. The more lines, the higher the resolution and the better the picture. A
standard VHS format VCR produces 240 lines of horizontal resolution.
3. The process of removing picture data to decrease the size of a video image.

Camera Terms:

AGC Auto Gain Control. Circuitry in cameras that improves performance in low light conditions.
AWB Auto White Balance. Circuitry in color cameras that compensates for different lighting conditions
BLC Back Light Compensation. Ability of a camera to adjust for brightly lit backgrounds.
Digital Zoom A method of zooming either by increasing the size of the pixels in the image or by interpolating between them.
Field Of View A Area covered by a camera
Optical Zoom The use of lenses to change the focal length of a digital or analog camera. Image quality is superior to digital zoom.
White Balance An electronic process used in camcorders* and video cameras* to calibrate the picture for accurate color display in different lighting
conditions. (i.e., sunlight vs. indoor incandescent) White balancing should be performed prior to any recording, typically by pointing the
camera at a white object for reference.
DVR Terms:
DVR Digital Video Recorder
BNC A type of connector used on some VCRs, video and RF equipment providing twist-lock capability.
Event Any input that creates an entry in a log and/or triggers recording to begin.
Input Any signal received by a device. Audio, video, voltage and contact closure to ground are some examples of outputs.
Mil-spec Rated for vibration according to established Military specifications
Monitor Displays the video image, may also have speakers. Usually used when there is no laptop with the system
Output Any signal created by a device. Audio, video, voltage and contact closure to ground are some examples of outputs.
- JPEG Still images, usually used for photos. Good quality but large files, short recording times.
- MPEG Standardized motion-based compression, similar to that used on DVD's and Cable TV broadcasts. Apollo's
chosen method of compression, giving high quality video and longest recording times.
- M-JPEG Non-standard method; series of still images with very large file sizes, very poor recording times.
1331-118th Ave SE, Ste 300 - Bellevue, WA 98005
Tel: 425.453.0430 / Fax: 425.453.0959
Apollo Video Technology
www.avt-usa.com
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