3838results about "Memory record carrier reading problems" patented technology

A method is described of calculating and verifying the integrity of data in a data communication system. The system comprises a base station and one or more remote stations, such as in an RFID system. The method includes transmitting a select instruction from the base station to the one or more remote stations, the select instruction containing a data field which matches a portion of an identity or other data field in one or more of the remote stations; transmitting from a selected remote station or stations a truncated reply containing identity data or other data of the remote station but omitting the portion transmitted by the base station; calculating in the base station a check sum or CRC from the data field originally sent and the truncated reply data received and comparing the calculated check sum or CRC with the check sum or CRC sent by the remote station.

In a protocol for preserving the privacy of communications between a RFID reader and a RFID tag, two distinct actions are taken. First, the reader and the tag must be mutually authenticated as being authorized participants in the communications. After that process is successfully completed, the authenticity of each authorized participant must be validated prior to each subsequent communication between reader and tag.

Apparatus for remote interaction with an object of interest includes a remote station for obtaining information from the object of interest, a base station for transmitting energy in space to and communicating with the remote station and the remote station having conversion means for energizing the remote station responsive to receipt of the transmitted energy. The energy may be of any suitable type including RF power, light, acoustic, magnetic energy or other form of space transmitted or "radiant" energy. The remote station does not have to contain a source of stored energy or a wired connection to a source of energy. The remote station receives the energy transmission and data transmission from the base station and transmits data to the base station. Microprocessor controllers may be provided for the base station and the remote station. The remote station may receive information from sensors and through one or more transponders sequentially communicate information to the base station. An associated method is provided. In other embodiments which are suited for use in miniaturized electronic chip systems, power enhancement and increased effective antenna size are provided. An electronic article containing a microchip having at least one antenna structured to communicate with an antenna remotely disposed with respect to the microchip formed therein and an associated method are provided.

Automatic data collection devices such as barcode readers, RFID readers, magnetic stripe readers and the like may be tested using ADC device test executables, modules or processes stored at a variety of network locations. One or more sets of tests or work lists may be defined to facilitate testing. Tests may be identified by name and / or keyword. Keywords may be indicative one or more functionalities tested by the respective ADC device test module.

In embodiments of the present invention improved capabilities are described for a wireless computing device, comprising an antenna; an analog block for receiving and transmitting an RF signal through the antenna, wherein the energy from the received RF signal provides power to the wireless computing device; and a data processing and controller block for data management, wherein the data processing and controller block comprises: (i) a first program memory adapted to store a first set of instructions comprising a system call adapted to perform at least one function, and (ii) a second program memory adapted to store a second set of instructions comprising an instruction to call the system call, wherein the data processing and controller block is adapted to execute the first set of instructions and the second set of instructions,wherein the antenna, analog block, and data processing and controller block are mounted on a single substrate.

The present invention discloses a shopping cart with RFID capability, for detecting a RFID tag, comprising: a frame, further comprising: an accommodating space for accommodating RFID-tagged items; a plurality of wheels, coupling to the frame for carrying the frame to move according to the rotation of the wheels; and a cover, rotatably mounted on the frame for sealing the accommodating space; a reader unit, further comprising: a RFID reader, attached to the frame; and at least an antenna, electrically connected to the RFID reader and being received in the accommodating space of the frame; a memory unit, attached to the frame and being electrically connected to the RFID reader; a control unit, further comprising: an actuating device, coupled to the frame and the cover in respective and capable of open / close the cover while operating; a sensing device, attached to the frame and being electrically connected to the RFID reader, capable of activating the RFID reader to start / stop reader RFID tags through the antenna with respect to the sensing unit sensing the opening / closing of the cover; and a power unit, for providing power to the reader unit, the memory unit and the control unit.

A system and method of determining locations of one or more RFID tags within an RFID environment. The system includes a plurality of RFID readers, each operative to transmit and receive RF signals for scanning a tag disposed within an RF coverage region associated with the reader, and for receiving tag data in response to the scanning of the tag. A plurality of sub-locations is determined within the environment, each corresponding to at least a portion of at least one of a plurality of RF coverage regions associated with the readers. The sub-locations are mapped to a plurality of predefined locations within the environment. A reader scans a tag, and receives tag scan data from the tag in response to the scanning of the tag. The tag scan data includes a tag identifier associated with the scanned tag. The tag scan data is mapped to the sub-locations based on the RF coverage region associated with the reader. The location of the scanned tag is then determined with reference to the predefined locations within the environment, based on the tag identifier included in the tag scan data, the mapping of the tag scan data to the sub-locations, and the mapping of the sub-locations to the predefined locations.

The present invention relates to a system and a method for detecting and identifying an object. More specifically the invention relates to a tag for attachment e.g. to luggage, the tag being adapted for transmission of an identifiable signal and a receiver for detecting and identifying the signal. The invention is concerned with use of the Internet and handheld terminals such as mobile phones in combination with Bluetooth(TM) or DECT technology for communicating information in relation to the object.