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Glossary
Bit rate
Indicates how many bits of data can be processed or
transmitted in a unit of time. Generally, the units are in
bps, or bits per second. Used to indicate the
compression rate of video and audio data, and how
much data a communications line can send and
receive in 1 second.
Day & Night (IR/electrical)
Day & Night (IR) is a function to switch on black and
white optically with an infrared filter inserted, and Day
& Night (electrical) is a function to switch on black
and white with the image processing of the camera.
Emergency recording
A function to prioritize image/audio recording using
the external switch connected to the recorder for
when emergencies occur.
Event
Indicates an occurrence that causes the recorder to
take an event action. Events include terminal alarm,
command alarm and camera site alarm, etc.
Event action
A specific action to be taken at an event occurrence.
When "ALM" is selected, the occurrence of an event
is announced by displaying a notification on the
monitor, lighting the status indicators and sounding
the buzzer. When "ADM" is selected, the occurrence
of an event will not be announced and only recording
and filing of event logs will be performed. Only an
event log is filed when it is set to Off.
Event recording
Function for starting recording automatically when an
event occurs. Event recording includes Pre-event
recording that records images before the event and
event recording that records images after the event.
Fisheye correction
This is a function to correct the fisheye image of our
fisheye network camera to a 1-screen PTZ or
4-screen PTZ image.
Frame rate (ips)
Refers to the unit that determines the smoothness
with which the recorded images are played back.
"ips" indicates the number of recorded frames in 1
second. The higher the number, the smoother the
movement, but the available recording time becomes
shorter.
MJPEG
Indicates a video format to sequentially transmit
JPEG images from cameras.
Some cameras phrase this video codec as just
"JPEG".
Multiscreen display
This product can display multiple camera
simultaneously while displaying live images or
playback images. Displaying of images from 4
cameras simultaneously is called as the 4-screen
display.
TCP alarm notification
Sends a message to the registered address using our
communication system when an event or error
occurs. It is also used to receive the TCP alarm
notification from the camera (camera site alarm) and
operate event actions of the recorder.
Schedule recording
Function that automatically starts video and audio
recording on a preset time schedule.
SD memory backup, SD memory data
The SD memory backup is a function of the camera
to save images on the SD memory card inserted in
the camera when the recorder fails to communicate
with the camera during the set schedule. The SD
memory data means its recorded image.
Smart coding (GOP control)
A control method of the camera to reduce the amount
of the transmitted data by prolonging the refresh
interval of the image when the motion in the image is
little.
VMD (Motion detection) search
The function that automatically detects motion in
images. In this product, it is possible to search for
date & time of motion detection in recorded images.
Re-encoding transmission
When playing back recorded images in a web
browser or application, this function re-encodes the
recorded images to the resolution and frame rate
supported by the respective application.
