CV-M9 GE
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7. GigE Vision Streaming Protocol (GVSP)
7.1. Digital Video Output (Bit Allocation)
Although the CV-M9GE is a digital camera, the image is generated by an analog component, the
CCD sensor. There are three CCD sensors in this camera. One for each R, G and B channel.
The table and diagram below show the relationship between the analog CCD output level and
the digital output.
CCD out
Analog Signal *
Digital Out(30bit) Digital Out(24bit)
Black
Setup 3.6%, 25mV
32LSB
8LSB
200mV 700mV
890LSB
222LSB
230mV 800mV
1023LSB
255LSB
Ana log S igna l [mV ]
B lack Leve l
1023
890
32
0
25
700
D
ig
ita
lO
u
t
[LS
B
]
Wh i te C l ip Leve l
100% Leve l
800
The standard setting for 10-bit video level is 890 LSB. For 8-bit, the standard setting is 222 LSB.
200 mV CCD output level, 100% video output.
Fig.8 Digital Output
7.2. Bit Allocation (Pixel Format / Pixel Type)
In the GigE Vision Interface, GVSP (GigE Vision Streaming Protocol) is used for an application
layer protocol relying on the UDP transport layer protocol. It allows an application to receive
image data, image information and other information from a device.
In CV-M9GE, the following pixel types supported by GVSP are available.
With regard to the details of GVSP, please refer to the GigE Vision Specification available from
AIA.
7.2.1. GVSP_PIX_BGR10V1_PACKED (32bit)
１
Byte
２
Byte
３
Byte
４
Byte
R R G G B B X X B B B B B B B B G G G G G G G G R R R R R R R R
0 1 0 1 0 1 X X 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9
Little Endian Bit Alignment
7.2.2. GVSP_PIX_BGR10V2_PACKED (32bit)
１
Byte
２
Byte
３
Byte
４
Byte
R R R R R R R R R R G G G G G G G G G G B B B B B B B B B B X X
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 X X
Little Endian Bit Alignment
7.2.3. GVSP_PIX_RGB8_PACKED (24bit)
１
Byte
目
２
Byte
目
３
Byte
目
R R R R R R R R G G G G G G G G B B B B B B B B
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
