METHOD FOR LOCATING ITEMS
1 Assignment
0 Petitions
Accused Products
Abstract
A convenient handheld locator is provided for locating an item in an urban environment in which the locator is programmed to search for and locate specific items, with the detected item being displayed on the locator as to its identity or name, also displaying where the item is relative to the locator, as to position and range.
-
Citations
46 Claims
-
1-26. -26. (canceled)
- 27. A method for extending the range of an RFID system which employs a transmitter for transmitting an interrogation beam towards an RFID tag and an RFID tag that uses a non-linear element including a diode for extracting the energy from the interrogation beam and backscatters a coded signal, comprising the step of biasing the diode with a battery, whereby the range of the RFID system is improved over an unbiased diode.
-
34. A method for extending the range of a parasitically-powered regenerative tag that includes a number of diodes in a diode rectifier circuit used to rectify incoming RF energy from an interrogation beam, comprising the step of:
biasing one or more of the diodes in the rectifier circuit with a battery to improve the efficiency of the diode circuit and to extend the range of the tag over that of a tag having unbiased diodes. - View Dependent Claims (35, 36, 37, 38, 39)
Specification