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:
Nov. 08, 1994
Filed:
Sep. 10, 1993
Laurent Aubry, Sunnyvale, CA (US);
Quantum Corporation, Milpitas, CA (US);
Abstract
A peak detector samples and holds amplitudes of pulses of a servo burst and includes a master peak detector for following a portion of a rising edge of each pulse until a peak amplitude is reached, and for decaying rapidly at a falling edge of each burst following the peak until a rising edge of a subsequent burst is intercepted at a point of interception, and for generating a control window extending from the point of interception of a rising edge to a peak value of each subsequent pulse; a slave peak detector enabled by the control window of the master detector for following the portion of the rising edge of each burst from the point of interception to the peak value, and for holding the peak value reached by the master detector during the control window, a holding circuit responsive to the slave detector and having a first, rapid time constant for rapidly acquiring a peak value of at least one initial peak of the burst, and having a second, slower time constant for adjusting the initially acquired peak value in light of subsequent peak values of the burst; and, a switching circuit for automatically switching the holding circuit from the first time constant to the second time constant.