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● USB:
Universal Serial Bus is a standard that was developed in the mid-1990s that defines cables, connectors and
communication protocols. This technology is designed to allow a connection, communication and power supply for
peripheral devices and computers.
● USB 1.1
: Full–Bandwidth USB, specification was the first release to be widely adopted by the consumer market. This
specification allowed for a maximum bandwidth of 12Mbps.
●USB 2.0
:or Hi–Speed USB, specification made many improvements over USB 1.1. The main improvement was an
increase in bandwidth to a maximum of 480Mbps.
● USB 3.2:
Super Speed USB with 3 varieties of 3.2 Gen 1(orig
i
nal name USB 3.0), 3.2Gen 2(original name USB 3.1), 3.2
Gen 2x2 (original name USB 3.2) with speed up to 5Gbps,10Gbps,20Gbps respectively.
USB version and connectors figure
：
●
NTSC :
The colour video standard used in North America and some other parts of the world created by the
National TelevisionStandards Committee in the 1950s. NTSC utilizes an interlaced video signals.
●
PAL:
Phase Alternate Line. A television standard in which the phase of the colour carrier is alternated from line to line.
It takes four full images (8 fields) for the colour-to-horizontalimages (8 fields) for the colour-to-horizontal phase
relationship to return to the reference point. This alternation helps cancel out phase errors. For this reason, the hue
control is not needed on a PAL TV set. PAL, is widely used in needed on a PAL TV set. PAL, is widely used in Western
Europe, Australia, Africa, the Middle East, and Micronesia. PAL uses 625-line, 50-field (25 fps) composite colour
transmission system.
●
SMPTE
：
Society of Motion image and Television Engineers. A global organization, based in the United States, that sets
standards for baseband visual communications. This includes film as well as video and television standards.
●
VESA
:
Video Electronics Standards Association. An organization facilitating computer graphics through standards.
●
HDCP:
High-bandwidth Digital Content Protection (HDCP) was developed by Intel Corporation an is in wide use for
protection of video during transmission betweendevices.
Type
A
Type
B
Mini
A
Mini
B
Micro-
A
Micro-
B
Type
C
USB
2.0
USB
3.0
USB
3.1&
3.2
