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:
Jun. 02, 1998
Filed:
Nov. 28, 1995
Lawrence Matthias Bryant, Palo Alto, CA (US);
Photonics Corporation, San Jose, CA (US);
Abstract
Reduction of lower frequency interfering signals including signals from fluorescent light systems can be achieved by an optical receiving system, before the detection process, by differentiating the signal and then using a modified detection process to detect the differentiated signal. At least one data channel is included in the optical receiving system, each data channel including an optical receiving transducer which receives optical transmissions from an optical transmitter positioned a distance away from the optical receiving system. From the transducer, the received signal is differentiated and amplified to remove unwanted interfering signals from the received signal before it is transmitted to a detector. The detector converts the differentiated and amplified signal into an output data stream which corresponds to the signal originally presented to the optical transmitter.