Digital information restoring device including period detector

Details Digital information restoring device including period detector Digital information restoring device including period detector

1994-04-26

1997-04-22

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

371 6, 375317, G11B 509, G11B 2014, G11B 2016

Patent

active

056233760

ABSTRACT:
A digital information restoring device is arranged to detect time between level transition points of a digital signal which indicates digital information by means of variations in its period, output the resultant period data, calculate an average value of at least two period data among the output period data, and compare the average value with the aforesaid period data, and restore the digital information. The digital information restoring device is, therefore, capable of restoring the digital information at a high speed without using a high-speed PLL circuit or the like. The digital information restoring device may also be arranged to perform time-axis expansion of only part of the received period data, and input the resultant period data to a computing circuit to restore the digital information.

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