Patent number: 5565744
Abstract: A position-dependent waveform (WCi) is generated by generating a set of functions (f.sub.l (I1), . . . ,f.sub.p (I1),g.sub.l (If), . . . ,g.sub.r (If)) from position information (I1,If). A sub-set of functions (f.sub.nl (I1), . . . ,f.sub.nq (I1),g.sub.nl (If), . . . ,g.sub.ns (If))is selected from this set of functions (f.sub.l (I1), . . . ,f.sub.p (I1),g.sub.1 (If), . . . ,g.sub.r (If)). Only selected functions associated with the sub-set of functions (f.sub.nl (I1), . . . ,f.sub.nq (I1),g.sub.nl (If), . . . ,g.sub.ns (If)) are each multiplied by an associated coefficient (al, . . . ,aq,bl, . . . ,bs). The selected functions (f.sub.nl (I1), . . . ,f.sub.nq (I1),g.sub.nl (If), . . . ,g.sub.ns (If)) multiplied by an associated coefficient (al, . . . ,aq,bl, . . . ,bs)are added to form the position-dependent waveform (WCi).
Type:
Grant
Filed:
October 25, 1995
Date of Patent:
October 15, 1996
Assignee:
U.S. Philips Corporation
Inventors:
Dirk, J. A. Teuling, Hendrik Ten Pierick