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. 24, 2000
Filed:
Dec. 31, 1997
Mizuyuki Ushirozawa, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In an optical transmitter, light outputs with different wavelengths are emitted from a plurality of light sources by a plurality of driving circuits, respectively. An optical switch control circuit controls an optical switch in response an input connection instruction such that an optional one of a plurality of input ports is connected to an optional one of a plurality of output ports to pass the light output from the optional input port to the optional output port. A plurality of modulator driving circuits drive a plurality of optical modulators in accordance with a plurality of data signals such that the light outputs from the output ports are optically modulated by the plurality of optical modulators, respectively.