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1.17 Glossary
85
High Dynamic Range (HDR)
The HDR (High Dynamic Range) mode increases
the usable contrast range. This is achieved by dividing the integration
time in two or three phases. The exposure time proportion of the three
phases can be set independently. Furthermore, it can be set, how many
signal of each phase is charged.
Horizontal sync
The portion of the analog signal which specifies the line end of the video
signal.
Host
Here: the PC
HRTC
With a
Hardware Real-Time Controller
(HRTC)
built inside the FPGA users can define a PLC like sequence of operating
steps to
control basic time critical functions like exposure time, image trigger and
I/O
ports. Timing is hard real-time with sub microsecond high resolution.
IDE
a software application that provides comprehensive facilities to
computer programmers for software development. An IDE normally
consists of a source code editor, a compiler and/or interpreter,
build automation tools, and (usually) a debugger.
Image refresh rate
Number of transferred images per second. Normally specified in Hz (e.g.
70 Hz)
Interrupt
Interrupt signal sent to the processor. The program currently running is
interrupted and a predefined function is executed.
IPKG
Itsy package management system originally designed for
embedded systems.
Please have a look at
https://en.
←
-
wikipedia.org/wiki/Ipkg
or a more sophisticated documentation
at
http://buffalo.nas-central.org/index.php
"Overview
←
-
_of_the_ipkg_package_management_system"
MATRIX VISION distributes all non-firmware, i.e. optional software as ipk
packages.
IRQ
Interrupt request
ISR
Interrupt service routine
JFFS2
JFFS2 is a file system which supports wear leveling.
See also
Sources about the JFFS file system:
•
http://sources.redhat.com/jffs2/
•
http://www.linux-mtd.infradead.
←
-
org/faq/jffs2.html
Link Aggregation (LAG)
Dual-GigE cameras need a network interface card with
two network interfaces. However, both network interfaces have to work as
a unit.
Link aggregation (LAG) or bonding is the name of the game and has to be
supported
by the network interface card's driver. With it you can bond the two network
interfaces
so that the work as one interface.
MATRIX VISION GmbH
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