Abstract: A method and apparatus for calibrating a device. The method includes: selecting a first power level at which a device is to transmit a radio frequency signal; receiving a radio frequency signal having been transmitted from the device based on a predetermined calibration value associated with the first power level; measuring a power level of the radio frequency signal transmitted from the device; based on the measured power level of the radio frequency signal, adjusting the predetermined calibration value associated with the first power level so that (i) a measured power level associated with a radio frequency signal transmitted from the device based on the adjusted predetermined calibration value falls within a predetermined range of the first power level; and based on the adjusted predetermined calibration value, calibrating each predetermined calibration value for a plurality of power levels other than the first power level.

Abstract: Apparatus for calibrating a transmitter of a first integrated circuit, the transmitter being capable of transmitting a signal at N different transmit power levels based on N respective calibration values stored in the first integrated circuit, wherein N>1, the apparatus having corresponding methods, comprise: a power meter to measure a received power level of the signal transmitted at one of the N power levels; and a calibration circuit comprising an adjustment circuit to adjust the calibration value for the power level until the received power level of the signal falls within a predetermined range, and an offset circuit to replace each of the calibration values for the N?1 remaining transmit power levels based on the adjusted calibration value for the transmit power level and a respective predetermined offset from the adjusted calibration value.

Abstract: An apparatus having corresponding methods and computer programs comprises a memory comprising a plurality of locations each to store a node for a binary tree comprising a plurality of the nodes; a classifier to search the tree, wherein the classifier requires one node processing interval to process one of the nodes; and a processor to modify the tree, wherein the processor (a) modifies a pointer that indicates a first one of the nodes to not indicate the first one of the nodes instead, wherein a second one of the nodes is a descendant of the first one of the nodes and is separated from the first one of the nodes by N pointers, (b) waits at least N+1 node processing intervals after (a), and (c) after (b), modifies a pointer that indicates the second one of the nodes to not indicate the second one of the nodes instead.