The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2000
Filed:
Oct. 27, 1997
Jumpei Kura, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention provides a digital signal reproduction circuit capable of controlling a transfer function of waveform equalization circuit so that a synchronous clock can be generated with an optimal transfer characteristic. The digital signal reproduction circuit 1 includes: a waveform equalization block for waveform-equalizing a regenerative signal; a binarization block 20 for binarizing the regenerative signal which has been waveform-equalized; a synchronous clock reproduction block 30 for generating a synchronous clock from the signal binarized; and a waveform equalization control block 40 for controlling a transfer function of the waveform equalization block 10 according to a jitter component between the synchronous clock and the binarized signal. The waveform equalization control block 40 is supplied with a phase difference signal between the binarized signal and the synchronous signal, so as to obtain an optimal value of the transfer function of the waveform equalization block 10 by using a microcomputer, for example. The transfer function is controlled so as to reduce the jitter component of the synchronous clock.