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:
May. 22, 2007
Filed:
Oct. 27, 2003
Alex Fishman, Sunnyvale, CA (US);
Serguei Dorofeev, Sunnyvale, CA (US);
Dmitri Bannikov, Mountain View, CA (US);
Robert Lee Fennelly, San Jose, CA (US);
Andreas Weber, Los Altos, CA (US);
Subra Nagarajan, Livermore, CA (US);
Alex Fishman, Sunnyvale, CA (US);
Serguei Dorofeev, Sunnyvale, CA (US);
Dmitri Bannikov, Mountain View, CA (US);
Robert Lee Fennelly, San Jose, CA (US);
Andreas Weber, Los Altos, CA (US);
Subra Nagarajan, Livermore, CA (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
Systems and methods are disclosed measuring the turn-on and turn-off times of an optoelectronic transceiver's transmitter circuitry. The method includes generating a two bit sequences from separate bit sequence generators using the same controlling pattern. The first bit sequence is transmitted through an optoelectronic device and compared with corresponding bit groups in the second bit sequence. The optoelectronic device is disabled and a count of compared bit groups is kept until the comparison indicates that the optoelectronic device is completely off. Using the count and one or more of the bit groups, a turn-off time is calculated. Alternatively, the method is used to calculate a turn-on time. The optoelectronic device is enabled and a count is kept from the time the device is enabled to when the comparison of the corresponding bit groups indicates that the optoelectronic device is completely on.