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:
Apr. 17, 2001
Filed:
Jul. 09, 1998
Yusuke Ota, Mountain Lakes, NJ (US);
Eduard Sackinger, Shrewsbury, NJ (US);
Agere Systems Optoelectronics Guardian Corp., Miami Lakes, FL (US);
Abstract
Power control for a laser used for bust mode communication as well as end-of-life detection for the laser are performed in a combined manner, resulting in a savings in both cost and power consumption. This is achieved by employing a peak comparator which is supplied with an indication of the magnitude of a the laser signal, and supplying to the peak comparator in a time multiplexed manner with different thresholds, such as a first threshold which is used for performing power control and a second threshold which is used for performing end of life detection, on an alternative packet-by-packet basis. Thus, the first threshold is supplied for the duration of a first packet and the second threshold is used for the duration of a second packet. Additional thresholds and packets may be employed for other functions as desired by an implementor.