JAI Progressive Scan Shutter Cameras, TM-6760 Programmable LUT and Knee Control patent pending

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TM-6760 Series Progressive Scan Shutter Cameras

•Variable positive knee curve and negative knee curve

•Direct input LUT and negative LUT

3.8Programmable LUT and Knee Control (patent pending)

The TM-6760 has a built-in LUT (look-up table) for dynamic range control. At a specific gain setting, the offset (minimum level... dark point) and A/D reference top voltage (maximum level... saturation point) are set to 10-bit A/D input so that the full dynamic range of the CCD is utilized at 10-bit references as the input and the LUT output are converted into 8-bit data to adjust the gamma correction.

The look-up table has two knee points (variable gamma selection) that allow the 10 bits to be segmented into three regions. The look-up table selection can be made either by variable knee curve or by direct input of the knee coordinates.

LUT #1 LUT #7

	256								Knee	Left Knee		Right Knee
LUT #0		LUT #4							Table	(X1,	Y1)	(X2,	Y2)
	224								0	84	224	1024	256
									1	56	224	1024	256
									2	80	160	1024	256
	192								3	60	160	1024	256
									4	40	160	1024	256
				LUT #5					5	96	192	1024	256
	160								6	48	192	1024	256
			LUT #6						7	112	224	1024	256
			LUT #3
	128		LUT #2
	96
	64
	32
	0	128	256	384	512	640	768	896	1024

Note: The second knee point on the built-in LUT defaults to position (1024, 256).

To reposition this point, click on it and drag it to a new location.

Operation