N
Network Camera
Also known as an IP Camera, Network Camera is a stand-alone camera and
has access to live viewing, motion detection via a standard web-browser
over a computer network or Internet. Network Camera often functions as an
embedded OS (operating system) and is equipped with the following
features: FTP of images, web server capability, and built-in motion
detection.
NTSC
NTSC is the acronym of National Television Standards Committee. NTSC is
the standard used in North America and most of South America. Taiwan uses
NTSC as well. 30 frames are transmitted each second in NTSC standard. And
the video format has 60 Hz field frequency and 525 individual scan lines.
NVR
NVR stands for Network Video Recorder. It enables simultaneous recording
and remote access to both live viewing images and recorded ones. NVR can
be software-based and connected to the IP camera.
O
Outdoor Camera Housing
A protective shell for security cameras used in outdoor environmental
P
PAL
PAL is the acronym of Phase Alternating Line. This television video signal
standard is mainly used in Europe and contains 625 picture lines and a 50Hz
field frequency.
Pelco-D
This protocol is used for pan/tilt/zoom (PTZ) control in security camera.
Pixel (Picture Element)
A pixel is one of the many tiny, tile-like picture elements (dots) that make up
a digital image.
