The SP486 and SP487 are low–power quad differential line drivers meeting RS-485 and RS-422
standards. The SP486 features a common driver enable control the SP487 provides independent
driver enable controls for each pair of drivers. Both feature tri–state outputs and wide
common–mode input range. ...
iris localization using integro differential operator. The rar contains 5 files in order to computer the integro differential operator of the normalized contour of the iris and puil boundaries and then add circles to the respective boundaries.
