Patent ID: 7332933
Filing Date: 2008-02-19
Classification: H03D,H04B

Abstract:
1. A compensation circuit for compensating for a difference between impedance measured from first and second impedance elements, the compensation circuit comprising: a first impedance circuit for transforming a first impedance value into a fine impedance value having 2 a second impedance circuit for transforming a second impedance value into a coarse impedance value having 2 a first measuring section for measuring the impedance of the first impedance element and producing the first impedance value; a second measuring section for measuring the impedance of the second impedance element and producing the second impedance value; a difference obtaining section for taking a difference between the first impedance value and the second impedance value and generating a difference value; and a look-up table receiving the difference value as an address and producing the control signal having k bits.