Abstract:
A power consumption measurement method for operating an electronic component during an interval of time includes: logging power states that the component adopts during the interval, interrogating the log to determine the amount of time that the component spent in each power state during interval, and multiplying the rated power consumption for each state by the amount of time spent in each respective state. The power consumptions for each of the states are summed to determine a total power consumption of the component during the interval. Logging the power states may be achieved by counting command line instructions of different types, thus identify the beginning and end of each power state, during the interval. The method may be used to measure and/or benchmark the actual power consumption of a DDR RAM module. An apparatus for carrying out the method is also disclosed.
Abstract:
There is described a multiple subscriber identity arrangement having a modem capable of receiving messages related to either one of at least two subscriber identities, but not simultaneously. The arrangement further comprises a control unit configured to, when the modem performs communication activity associated with a first subscriber identity: determine whether gaps not allocated for the communication activity associated with the first subscriber identity coincide with paging occasions associated with a second subscriber identity; and, if at least one gap not allocated for the communication activity associated with the first subscriber identity coincides with at least one paging occasion associated with the second subscriber identity, cause the modem to switch to the second subscriber identity to read one paging message on a paging channel associated with the second subscriber identity.
Abstract:
Differential output stage (200) of an amplification device, for driving a load, comprises a first (201) and a second (202) differential output stage portion. The first differential output stage portion (201) comprises: a first (M1PSW) and a second (M1NSW) output circuit; a first driving circuit (210) comprising a first biasing circuit (M2P, M3N, M4N, R11, I11); a second driving circuit (220) comprising a second biasing circuit (I41, R41, M4P, M3P, M2N). The first differential output stage portion (201) comprises: a third output circuit (M2PSW) connected between a first node (N1) of said first biasing circuit (M2P, M3N, M4N, R11, I11) and a first differential output terminal (01), having a third driving terminal (DT3) connected to a first driving terminal (DT1); a fourth output circuit (M2NSW) connected between a first node (N4) of the second biasing circuit (I41, R41, M4P, M3P, M2N) and the first differential output terminal (01), having a fourth driving terminal (DT4) connected to a second driving terminal (DT2).
Abstract:
There is described Audio driver circuit comprising a main, 1-bit digital-to-analog converter, adapted to receive a 1-bit oversampled digital audio signal. Thanks to an auxiliary digital-to-analog converter which converts into the analog domain a digital offset compensation value stored in e.g. an OTP memory register 34, and to a summing and filtering arrangement, it is possible to reduce the offset cancellation granularity in order to compensate for the offset of the main digital-to-analog converter in the output signal.
Abstract:
The present invention relates to a signal synchronization circuit comprising at least one synchronizer (2.1-2.2) comprising a number N of series connected clock delay elements (3.1-3.3), N being equal to or greater than unity and a clock signal generator (1) arranged for generating a modulated clock signal adapted to clock the clock delay element (3.1-3.3) or elements of the at least one synchronizer (2.1-2.2). The clock generator (1) is arranged to receive a clock signal (5) and at least one operating value (6) and to generate the modulated clock signal (1 out) from the clock signal (5) modified based on the operating value (6).
Abstract:
There is described a method for the creation of at least a second, virtual image (200) from a first image (100) captured by a user or retrieved from a storage device to aid interpretation of image content. This allows, for instance, implementing a multishot image quality enhancement scheme based on the real image and the virtual image.
Abstract:
An interference cancellation technique is implemented in a receiver adapted for determining an estimation of interferences when receiving an OFDM signal made of packets. Each packet includes a first training field, a second training field, a first header field, a second header field and a data field. The receiver detects a first symbol value of the first header field, and a second symbol value of the second header field, the first and the second header fields having been modulated using different modulation schemes. The estimation of interferences is determined using the first and the second symbol values.
Abstract:
A method of conditioning a first signal transmitted between a first and a second near field communication, NFC, device, the method comprising: determining a transfer function representative of a distortion arising from transfer of a signal from the first NFC device to the second NFC device; determining a pre-distortion function from the transfer function; and applying the pre-distortion function to the first signal, wherein the pre-distortion function at least partially compensates for the determined transfer function.
Abstract:
A circuit with current-controlled frequency implements a node (2) with an electrical charge which alternatively increases and decreases between two thresholds. The slew rate of the node can be adjusted using a tunable current source (1), thereby enabling tuning of a switching delay. The circuit may be used for controlling the switching frequency of a switch-mode power supply.
Abstract:
A method of controlling a start-up sequence of a DC/DC Buck converter, the method being characterised by the steps of continuously comparing the Buck converter's output voltage with an internal reference voltage and continuously monitoring for a Buck converter start-up signal, wherein if the output voltage is greater than the reference voltage when a Buck converter start-up signal is detected, switching off the Buck converter and discharging an output capacitor of the Buck converter through a pull-down unit until the output voltage substantially equals the internal reference voltage and then restarting the Buck converter.