Abstract:
A method for performing electromagnetic induction communication enables transmitting modulation data between communication devices. The method includes coupling a first antenna of a first communication device and a second antenna of a second communication device, generating a magnetic field by supplying a first current through the first antenna, and modulating the magnetic field according to the modulation data. The first current is regulated so as to be substantially constant, by introducing a regulating current, which is function of the magnetic field. The first communication device determines the modulation data from the regulating current.
Abstract:
A communication device includes at least two output apparatuses, and an interface circuit configured as an interface between the at least two output apparatuses and software drivers supported by an operating system embedded within the communication device, so that the software drivers can access the output apparatuses. The interface circuit includes an access control circuit configured to temporarily allocate a first one of the at least two apparatuses with a first one of the software drivers, so that other ones of the software drivers cannot access the first output apparatus during its allocation to the first software driver. The interface circuit also includes shared resource circuits configured to dynamically direct communication from the first software driver to the temporarily allocated first output apparatus.
Abstract:
A circuit comprising: —an output stage according to the invention; —a first control apparatus comprising a control stage of the first control apparatus is connected to the output stage; and, —a second control apparatus comprising a control stage of the second control apparatus is connected to the output stage; wherein, —when the control stage of the first control apparatus is connected to the output stage, the control stage of the second control apparatus is electrically disconnected from the output stage, the output stage being configured to operate in a first operating state; and, —when the control stage of the second control apparatus is connected to the output stage, the control stage of the first control apparatus is electrically disconnected from the output stage, the output stage being configured to operate in a second operating state. The output stage and the use of the output stage are also claimed.
Abstract:
An integrated circuit includes a clock generation stage that generates a clock signal having a clock frequency dependent on a reference signal. A delay stage generates a delayed clock signal by delaying the clock signal. A control stage generates a control signal indicative of a delay of the delayed clock signal relative to the clock signal. A frequency divider generates a divided signal by dividing a dividend signal having a dividend frequency dependent on the reference signal. A power supply regulator supplies power to the frequency divider at a first power level, which is dependent on the control signal.
Abstract:
A method for determining a symbol boundary in a data packet belonging to a received OFDM signal is provided. The data packet includes a first training filed and a second training field, which begins with a guard interval. The method includes detecting the beginning of the data packet, and starting an automatic gain control process. The method further includes, after the automatic gain control process is locked, determining autocorrelation peaks and estimating the symbol boundary from times of the autocorrelation peaks.
Abstract:
A switching circuit that switches voltage at an output node includes a first switch element configured to enable supplying a first voltage from a first supply node to the output node, a second switch element configured to enable supplying a second voltage from a second supply node to the output node, and a controller. The controller switches the first and the second switch element between a first state and a second state depending on an input voltage. In the first state, the first switch element is in a conducting state and the second switch element is in a non-conducting state, and, in the second state the first switch element is in a non-conducting state and the second switch element is in a conducting state, the switching being performed through an intermediate state in which both the first and the second switch element are in the non-conducting state.
Abstract:
An arrangement (400) for a user equipment, UE, is disclosed. The arrangement (400) comprises an acquiring unit (401) configured to acquire neighboring cell information relating to a plurality of neighboring cells. An assignment unit (403) is provided to assign a priority indicator to each neighboring cell based on the neighboring cell information. Also, a measurement unit (404) is provided to perform measurements on the basis of the assigned priority indicators. The arrangement (400) is arranged such that measurements can be performed more frequently for a neighboring cell having a first priority indicator compared with another neighboring cell having a second priority indicator, which second priority indicator is comparatively lower than the first priority indicator. The disclosure also presents corresponding methods, computer program products and devices.
Abstract:
Method of data processing for selectively activating, at a mobile station, a mode of communication related to VAMOS-2 technology. The method includes the steps of: receiving a first signal of a first subchannel, the first signal containing a first training sequence, and receiving a second signal of a second subchannel, the second signal containing a second training sequence, the second signal being orthogonally multiplexed with respect to the first signal, and using the first training sequence and the second training sequence to: determine a value of a parameter defining a ratio between the first subchannel power and the second subchannel power, and determine a signal to noise ratio estimation, and determine, using the parameter value and the signal to noise estimation, whether the mode of communication has to be activated.
Abstract:
An exemplary method of maintaining secure time in a computing device is disclosed in which one or more processors implements a Rich Execution Environment (REE), and a separate Trusted Execution Environment (TEE). The TEE maintains a real-time clock (RTC) that provides a RTC time to the REE. A RTC offset is stored in non-volatile memory, with the RTC offset indicating a difference between the RTC time and a protected reference (PR) time. Responsive to a request from the REE to read the RTC time, a current RTC time is returned to the REE. Responsive to a request from the REE to adjust the RTC time, the RTC time and the corresponding RTC offset are adjusted by a same amount, such that the PR time is not altered by the RTC adjustment. An exemplary computing device operable to implement the method is also disclosed.
Abstract:
A downlink signaling counter management method for a communication device is adapted to be simultaneously associated with at least two subscriber identities and to simultaneously provide radio receiving capabilities to less than all of the subscriber identities. For each decoding of a paging block for a subscriber identity, it is determined whether the paging block decoding was correct and whether a previous paging block decoding condition is fulfilled. The downlink signaling counter is updated with different values depending on this determination results, and on whether the paging block decoding was based on a maximum number of paging bursts.