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TDA9171 - YUV picture improvement processor based on histogram modification and blue stretch
TDA9170 - YUV picture improvement processor based on histogram modification
HSP48410 - Histogrammer/Accumulating Buffer
LF48410 - 1024 x 24-bit Video Histogrammer
IA64250 - Histogram/Hough Transform Processor
DS2435 - Battery Identification Chip with Time/Temperature Histogram