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:
Oct. 14, 2008
Filed:
Oct. 30, 2006
Optical packet communication device with an applied negative voltage for canceling an offset voltage
Daisuke Hayashi, Musashino, JP;
Masayuki Suehiro, Musashino, JP;
Hirotoshi Kodaka, Musashino, JP;
Yasukazu Akasaka, Musashino, JP;
Shinji Iio, Musashino, JP;
Morio Wada, Musashino, JP;
Toshimasa Umezawa, Musashino, JP;
Toshiyasu Izawa, Musashino, JP;
Hiroshi Shimizu, Musashino, JP;
Daisuke Hayashi, Musashino, JP;
Masayuki Suehiro, Musashino, JP;
Hirotoshi Kodaka, Musashino, JP;
Yasukazu Akasaka, Musashino, JP;
Shinji Iio, Musashino, JP;
Morio Wada, Musashino, JP;
Toshimasa Umezawa, Musashino, JP;
Toshiyasu Izawa, Musashino, JP;
Hiroshi Shimizu, Musashino, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
There is provided a PD-TIA module that can be used for recognition of an address of an optical packet signal in a system having variation in mark rate all the time, such as an optical packet communication system. An optical communication module comprises a photoelectric converter for converting an optical signal into a current signal, a current/voltage conversion means connected to the photoelectric converter, for converting the current signal into a voltage signal, and a limiting amplifier for receiving and amplifying an electric signal subjected to voltage conversion by the current/voltage conversion means while comparing the electric signal as amplified with a predetermined threshold value, thereby outputting a signal for '0' or '1'.