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. 04, 2007
Filed:
Dec. 28, 2005
Raanan Ivry, Haifa, IL;
Raanan Ivry, Haifa, IL;
PMC-Sierra Israel Ltd., Herzliya Pituach, IL;
Abstract
Devices and methods for processing signals using a Burst-Mode TIA that meets EPON and GPON specifications are disclosed herein. A signal provided by a power detector is processed with the appropriate gain by using a gain selector which includes a feedback circuit to choose the gain internally, thereby eliminating the need for an external control. Further embodiments of the invention include power detectors featuring a low-pass filter, a peak detector, and/or an envelope detector. Further embodiments of the invention include a Freeze function circuit for maintaining a current gain. Further embodiments of the invention apply appropriate gains when bursts with substantially different power levels are received consecutively, and prevent the gain from being changed during a burst. In this method, a two-pole low-pass filter with an undamped response function is used.