Patent ID: 8115629
Filing Date: 2012-02-14
Classification: G06Q

Abstract:
1. A system for managing objects distributed in an object location space, said system comprising: a receptacle for a plurality of objects, said receptacle having a pair of electrically conductive members; a pair of electrically conductive signal leads coupled to said pair of electrically conductive members; and a plurality of radio frequency (r.f.) circuits each associated to a different one of said objects, each of said plurality of r.f. circuits having a pair of electrically conductive terminals in electrical contact with said electrically conductive members when the associated object is located in said receptacle, at least two crystals each resonant at a specific frequency and an indicator activated whenever the associated crystals detect r.f. signals at the specific frequencies of those at least two crystals, the resonant frequencies of said at least two crystals in each r.f. circuit being different from the resonant frequencies of said at least two crystals in the other r.f. circuits so that r.f. signals applied to said pair of electrically conductive signal leads cause said at least two crystals in only one of said r.f. circuits to resonate and only the associated indicator to be activated.