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:
Sep. 16, 2014
Filed:
May. 06, 2013
Verifone, Inc., San Jose, CA (US);
Yuan Fuat Chin, Singapore, SG;
Choy Fong Poan, Singapore, SG;
Verifone, Inc., San Jose, CA (US);
Abstract
RFID transmission circuitry including a transmission module producing a pulsed output, a first threshold circuit providing a pulsed output including only pulses whose amplitude exceeds a first threshold level, a second threshold circuit providing a pulsed output including only pulses whose amplitude exceeds a second threshold level, which is less than the first threshold level, a gate circuit operative to provide a logic output in response to each clock input, the logic output being responsive to the presence or absence of a signal input pulse thereat, a power amplifier receiving the pulsed output of the transmission module and the logic output from the gate circuit as a gain control input and providing an amplified output responsive to the gain control input and an antenna which is driven by an input derived from the amplified output.