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. 23, 1994
Filed:
Mar. 27, 1992
Jerry J Heep, Weatherford, TX (US);
Tandy Corporation, Fort Worth, TX (US);
Abstract
A multimeter converts an input voltage into decibels. Preferably, the input voltage is converted into dbm. The multimeter includes a table of voltage values wherein each entry is associated with a given decibel value. The input voltage is compared with entries in the table to locate a first entry which is larger than the input voltage. A second entry having a lower value than the input voltage is then located in the table. A fractional value that is indicative of where the input voltage lies at a range between the first entry and the second entry is calculated using the first and second entries. The fractional value is added to a decibel value corresponding the second entry to produce a decibel value for the input voltage. The input voltage may be scaled down into an appropriate operational voltage range and then the calculated decibel value may be scaled up to compensate for this scaling down.