| 摘要 |
A boost type equalizing circuit, being an equalizing circuit used in a signal reproducing circuit of memory device such as an optical disk drive and hard disk drive, and comprising boost units 4, 6, which is used for compensating distortion caused in reproduced signal of information recording medium, and compensating frequency characteristic of reproduced signal. The boost units 4, 6 are composed so that the numerator of the transfer function may have an even-number order term of fourth power or more of Laplace operator s. A boost equalizing circuit of excellent cut-off characteristic in high frequency range can be presented.
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