| US 7,512,384 B2 | ||
| Control unit and a control method | ||
| Takeshi Toda, Tokyo (Japan); Takeshi Takano, Kawasaki (Japan); Yuuta Nakaya, Kawasaki (Japan); and Yasuyuki Oishi, Kawasaki (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Jan. 27, 2005, as Appl. No. 11/44,628. | ||
| Application 11/044628 is a continuation of application No. PCT/JP02/11460, filed on Nov. 01, 2002. | ||
| Prior Publication US 2005/0146387 A1, Jul. 07, 2005 | ||
| Int. Cl. H03C 1/52 (2006.01) | ||
| U.S. Cl. 455—107 [455/120; 455/121; 455/575.7] | 16 Claims |
| 1. A control unit, comprising:
a first changing unit configured to change impedance of each of a plurality of first components that affect a property of
an output signal, said impedance being changed within a first range;
a second changing unit configured to change impedance of each of a plurality of second components that affect the property
of the output signal, said impedance being changed within a second range that is narrower than said first range;
an evaluation function value calculating unit configured to calculate an evaluation function value that is dependent on said
impedances of said first and said second components based on said output signal; and
a gradient vector calculating unit configured to calculate a gradient vector based on a difference between the evaluation
function values before and after said impedance of said second component is changed,
wherein said impedance of each of said first components is adjusted based on said gradient vector such that said evaluation
function value takes a desired value.
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