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:
Oct. 13, 1987
Filed:
Mar. 25, 1986
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An apparatus for recording and reproducing digital signals includes a detector for detecting and producing a phase data signal of a sampled point of the digital signal, a first comparator for comparing a first phase data signal at one sampling point and a second phase data signal at one previous sampling point, a second comparator for comparing a predetermined value with a phase difference between the second phase data and newly detected phase data, a condition detecting means, utilizing the results of the first and second comparators, for detecting whether two adjacent sampling points are within a reference phase period, and sampling pulse generating means for generating one sampling pulse when the two sampling points are separated by a distance equal to the reference phase period, two sampling pulses when the distance is greater than the reference phase period; and no sampling pulse when the distance is less than the reference phase period.