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:
Aug. 31, 2004
Filed:
Jan. 21, 2002
Michael Paul Minneman, Broomfield, CO (US);
Michael Paul Atwell, Broadview Heights, OH (US);
Elwood James Egerton, Longmont, CO (US);
DBM Optics, Incorporated, Lafeyette, CO (US);
Abstract
A range selection circuit ( ), including a logarithmic amplifier ( ) and output circuitry ( ) associated therewith, is configured to directly drive linear ranging circuitry for measurement circuitry ( ) in an optical power meter ( ) to measure signals that vary over a wide range of, for example, from about −7 dB to about −45 dB. This allows the optical power meter to change ranges as fast as one (1) times the hardware settling time. The range selection circuitry is in parallel with the measurement circuitry, which allows ranging to happen in real time.