Hyper Threading; Ieee 1394; Parity Bit - AOpen AX4SG Online Manual
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Hyper-Threading technology is an innovative design from Intel that enables multi-threaded software applications to process threads in
parallel within each processor resulting in increased utilization of processor execution resources. As a result, an average improvement of
~40% in CPU resource utilization yields higher processing throughput.
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IEEE 1394, which also called Firewire, is a serial data transfer protocol and interconnection system. The main feature of the Firewire that
assures its adoption for the digital video and audio (A/V) consumer application is its low cost. Fire wire interface is capable of supporting
various high-end digital A/V applications, such as consumer A/V device control and signal routing, Digital Video (DV) editing, home
networking, and more than 32 channels of digital mixing. Gone are those days of expensive video capture cards. Firewire allows for video
capture from both newer DV camcorders with Firewire ports and older analog equipment using A/V to Firewire converters.
The advantages of the IEEE1394:
High data transfer rate – Start from 400 Mbps, (with 800/1600/3200 Mbps coming soon), which is about 30 times faster than USB 1.1.
Supports up to 63 devices (16 - daisy chained) with cable length up to about 4.5 m (14 feet).
Hot-pluggable (like USB). No need to turn of your device to connect or disconnect, and you don't need to reboot your PC. Also, it is a
plug-and-play bus.
IEEE1394 is very easy to connect (Like USB1.1/2/0).
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The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated, parity bit will
be adjusted to have even count "1" for each byte. When next time, if memory is read with odd number of "1", the parity error is occurred
and this is called single bit error detection.
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