| 摘要 |
<p>An information reproducing device in accordance with the present invention has at least a differentiating zero-cross detection circuit that differentiates analog reproduced signals that were detected as a light beam was irradiated on an information recording medium whereon information is digitally recorded, that generates differentiated signals, and generates binary zero-cross signals by comparing the differentiated signals and its zero level, a gate generating circuit that generates binary gate signals in accordance with the variation of the analog reproduced signals, a flip-flop that generates binary reproduced signals based on the comparison of the zero-cross signals and the gate signals, and an equalizer that emphasizes the high-frequency components of the analog reproduced signals. Provision is made such that the equalizer is installed ahead of the gate generating circuit. The equalizer thus generates gate signals that correspond accurately to the variation of the analog reproduced signals, thereby permitting data recorded on the information recording medium to be reproduced accurately.</p> |
