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:
Dec. 19, 2000
Filed:
Jul. 02, 1998
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A signal detection device and method of a data recording/reproducing apparatus. The signal detection device of a data recording/reproducing apparatus for recording/reproducing a digital signal U.sub.k having an arbitrary integer time k as an index, includes: an analog-to-digital converter (ADC) for converting an analog signal from which external band noise is removed after being reproduced from the data recording/reproducing apparatus, into a digital signal; a filter for modifying the digital signal converted by the analog-to-digital converter (ADC) into a signal having a predetermined spectral shape; and a Viterbi detector for detecting the spectrum signal modified by the filter as the data recorded in the data recording/reproducing apparatus. Therefore, after equalizing a signal into a spectrum expressed by 2+D+D.sup.2 +D.sup.3, which is similar to the spectrum of an optical recording/reproducing apparatus, the maximum likelihood (ML) is detected by the Viterbi detector. Accordingly, noise scarcely increases and loss by intersymbol interference is overcome, so that the signal can be detected with reliability.