located in the external memory gives for the given values of att 528 and apl b 70 a new value of apl apl att in block 13 this new apl has 4 3 times less sustain than apl b so since sustainnumber 70 950 sustainnumber apl att 222 and apl att 605 then an updated value of att is looked up in the lut att2att u2032 here the value is the same att u2032 528 depending on the choice which has been made for the implementation a lut or just a coefficient has to be loaded in the ic in order to proceed to the multiplication so in the first case the compensation video block 14 will pick up the lut corresponding to att u2032 528 in the comp_video lut located in the external memory this lut has only 528 inputs since the front end delivers values between 0 and even if the place on this ic should be equal to its maximum size i e 1024 10 bit this lut is loaded only once per frame and is used for every pixel of the picture the lut will multiply the video data by so that the video will be able to use the full dynamic of the pdp the other solution is to make this multiplication in the ic in this case only the coefficient to be used for the multiplication mult has to be loaded in the ic this coefficient is in the mult_video lut located in the external memory this value is loaded only once per frame and.