Abstract: Position sensors include processing circuits. The processing circuits include first and second measurement circuits that each process at least one common sensor signal. A measurement processing circuitry is arranged to use the measurements from each measurement circuit, typically in a time interleaved manner, so that whilst the measurement processing circuitry is using the measurements from one measurement circuit, measurements obtained in the other measurement circuit can be used to determine calibrations that can be used to calibrate subsequent measurements obtained from that measurement circuit.

Abstract: Position sensors include processing circuits. The processing circuits include first and second measurement circuits that each process at least one common sensor signal. A measurement processing circuitry is arranged to use the measurements from each measurement circuit, typically in a time interleaved manner, so that whilst the measurement processing circuitry is using the measurements from one measurement circuit, measurements obtained in the other measurement circuit can be used to determine calibrations that can be used to calibrate subsequent measurements obtained from that measurement circuit.

Abstract: A system is provided for providing mobile users with information relating to products and/or services. In one embodiment, the user has a mobile telephone having a barcode reader for reading barcodes associated with products or services. The barcode tag value obtained from reading the barcode is transmitted to a remote server via the mobile telephone network. The remote server uses the barcode value to retrieve a plurality of options associated with the product identified by the barcode value. The options are transmitted back to the user's mobile telephone where they are displayed to the user. In response to the user selecting one of the options, information relating to the selected option is retrieved and displayed to the user on the mobile telephone.