An electronic voting system is described that utilizes printed vote records (PVRs) in which a voter's vote selections are recorded in voter readable characters. Optical character recognition (OCR) techniques may then be utilized to scan the PVR to record the voter's selections. The OCR data is then utilized to generate the cast vote record. Thus, the electronic voting system directly interprets the voter selections from the PVR just as the voter sees the data. In this manner what you see is what you get printed vote record data is provided for a voter's viewing and that same data is used to generate the cast vote record.

An antenna (10) for an RFID reader, the antenna (10) comprising at least two linearly polarized individual antennas (24a-b) and a feed circuit (26) which is connected to the individual antennas (24a-b), wherein the individual antennas (24a-b) are arranged relative to one another with a tilt of an internal angle and together form a circularly polarized antenna, and wherein the antenna (10) has a free space (30) in a region of the internal angle.

A disclosed transponder arrangement includes a transponder integrated circuit (IC), an inductive loop, and a dipole antenna. First and second wires are coupled to the transponder IC and have portions configured for different levels of electrical coupling between one another. Engagement of the inductive loop with an induction portion of the dipole antenna induces current flow in the inductive loop in response to the dipole antenna resonating from a radio frequency (RF) signal, and disengagement makes the transponder IC non-responsive to the RF signal. Depending on a level of electrical coupling between the first and second wires, the transponder IC generates an RF signal that encodes either a first value indicating partial engagement or a second value indicating full engagement in response to the current flow in the inductive loop.

The present invention relates to inventory scanning using dual polarization radio frequency identification antennae for automatically reading and locating inventory.

A radio frequency identification (RFID) tag includes an antenna structure operable to receive a radio frequency (RF) signal, an RF signal circuit operable to, when enabled, produce the RF signal, a sensing element operably coupled to the antenna structure, a memory, and a processing module. When in a calibration mode, the processing module adjusts the input impedance until a measured power level is substantially equal to the desired input power level, and generates a first digital value based on the amount of the adjustment a power difference between a measured first input power level and a desired power level, and stores the first digital value in the memory, where the first digital value is representative of a known condition. In a sense mode, the processing module adjusts the input impedance until a second measured power level is substantially equal to the desired input power level, and generates a second digital value based on the amount of the adjustment a power difference between a measured first input power level and a desired power level, and the desired power level, and stores the second digital value in the memory, where the second digital value is representative of an unknown condition.

An object of the present invention is to detect an electronic circuit device with small power. A detection device 1 detects an electronic circuit device 2 which has a unique resonance frequency and performs data communication by power obtained by resonance, and includes an antenna 11 configured to emit a radio wave at the resonance frequency to the electronic circuit device 2, an oscillation unit 12 configured to output an oscillation signal at the resonance frequency to the antenna 11, a resonance detection unit 13 configured to detect a resonant state occurring between the antenna 11 and the electronic circuit device 2, a determination unit 14 configured to determine existence of the electronic circuit device 2 on the basis of the resonant state detected by the resonance detection unit 13.

A surgical product supply system includes a cart having a first compartment and a second compartment. The first compartment has first, second, third and fourth walls. The first and second walls are constructed of radio-reflective material and the third and fourth walls are constructed of a radio-absorptive material. The first compartment has a first storage area. A first RFID antenna array is attached to the first wall and is positioned within the first storage area. The first RFID antenna array includes a first plurality of RFID antennas. A second RFID antenna array is attached to the second wall and is positioned within the first storage area. The second RFID antenna array includes a second plurality of RFID antennas. The first RFID antenna is offset relative to the second RFID antenna such that opposing central axes of the first and second RFID antennas are not collinear.

A reading apparatus is configured to communicate with a wireless tag attached to an object. The reading apparatus includes a container having a plurality of side walls and an opening such that the object can be placed through the opening, an antenna at a bottom of the container, configured to transmit and receive radio waves to and from the wireless tag, and a plurality of reflective elements arranged in the side walls so that the radio waves radiated from the antenna and reflected by the reflective elements do not leak through the opening to the outside.

A radio frequency identification (RFID) tag includes an antenna structure operable to receive a radio frequency (RF) signal, an RF signal circuit operable to, when enabled, produce the RF signal, a sensing element operably coupled to the antenna structure, a memory, and a processing module. When in a calibration mode, the processing module adjusts the input impedance until a measured power level is substantially equal to the desired input power level, and generates a first digital value based on the amount of the adjustment a power difference between a measured first input power level and a desired power level, and stores the first digital value in the memory, where the first digital value is representative of a known condition. In a sense mode, the processing module adjusts the input impedance until a second measured power level is substantially equal to the desired input power level, and generates a second digital value based on the amount of the adjustment a power difference between a measured first input power level and a desired power level, and the desired power level, and stores the second digital value in the memory, where the second digital value is representative of an unknown condition.

The present disclosure relates generally to electronic devices, and more particularly, to electronic devices that utilize electromagnetic signals (e.g., radio frequency (RF) signals), transmitters, and receivers in various processes, such as cellular and wireless device processes in a at least partially metal enclosure. The present disclosure describes devices that may be used to wirelessly transmit and/or receive electromagnetic signals between processing components and sensing components, for example, by improving sensing device design and thus forming an integrated sensing tag that leverages passive RF technology, such as radio frequency identification (RFID) tags.