Abstract: Embodiments described herein provide a LED lighting system and method. A transformer has a primary winding and a secondary winding. A plurality of LED strings are coupled to the secondary winding of the transformer. At least one switch is coupled to at least one of the plurality of LED strings. A controller is coupled to the at least one switch and configured to control the operation of the at least one switch such that current flows through the plurality of LED strings in an alternating manner.

Abstract: A light emitting device that provides white light of various color temperatures by using a double-sided light emitting element, a light emitting system comprising the same, and a method of fabricating thereof are provided. The light emitting device includes a double-sided light emitting element including a first light emitting element on one side of a substrate and emits light having a first wavelength and a second light emitting element on the other side of the substrate and emits light having a second wavelength, wherein the first wavelength and the second wavelength are different each other, a first variable resistor coupled to the first light emitting element and adjusting a first driving power applied to the first light emitting element, and a second variable resistor coupled to the second light emitting element and adjusting a second driving power applied to the second light emitting element.

Abstract: A two-terminal current controller having a current limiting unit and an adjusting unit regulates a first current flowing through a load according to a load voltage. When the load voltage does not exceed a first voltage, the two-terminal current controller operates in a first mode for conducting a second current associated a rectified AC voltage, thereby limiting the first current to zero and adjusting the second current accordingly. When the load voltage is between the first voltage and a second voltage, the two-terminal current controller operates in a second mode for conducting the second current, thereby limiting the first current to zero and limiting the second current to a constant value larger than zero. When the load voltage exceeds the second voltage, the two-terminal current controller operates in a third mode for turning off the current limiting unit. The adjusting unit can adjust the predetermined value and the second voltage.

Abstract: A circuit for determining an average value of a quasiperiodic signal may include an integrator, a sample and hold circuit coupled to an output of the integrator, wherein the sample and hold circuit includes a sample and hold circuit output, a feedback path coupled to the sample and hold circuit output and configured to feedback the signal provided at the sample and hold circuit output as a feedback signal, a subtractor configured to form a difference signal representing the difference between the quasiperiodic signal and the feedback signal, wherein an output of the subtractor is coupled to an input of the integrator to thereby provide the difference signal to the input of the integrator.

Abstract: A driving device, a light emitting diode (LED) driving device and a method thereof are provided. The driving device includes a driving unit and a plurality of selection units. The driving unit produces a driving signal to drive a light emitting diode. The selection units are coupled to the driving unit and respectively correspond to a current value. The driving unit selects one of the selection units according a first pulse width modulation (PWM) signal. The current value corresponding to the selected selection unit is taken as the current value of the driving signal. The driving unit generates a duty cycle of a second PWM signal according to the duty cycle of the first PWM signal to serve as a duty cycle of the driving signal. In this way, power consumption of the LED is reduced.

Abstract: In one embodiment, a DC power supply unit includes a DC power supply source; a load circuit connected to an output end of the DC power supply source; a load state detection device to detect a load voltage or an electric quantity corresponding to the load voltage; and a control device to receive the detected output of the load state detection device. The control device controls a maximum output voltage of the DC power supply source so that the voltage difference between the maximum output voltage of the DC power supply source and the load voltage at the time of normal operation falls within a predetermined range in which arc discharge is suppressed.

Abstract: A DC-DC converter includes a plurality of boost circuits and a controller. The boost circuits are coupled to another in parallel. The boost circuits receive a DC voltage and boost the DC voltage. The controller drives the boost circuits with a duty ratio of less than 50% and different phases.

Abstract: A method of controlling an electric synchronous machine having a stator and a moving part includes operating the machine with a deceleration moment so that a speed of the moving part of the machine is reducing, monitoring the movement of the moving part of the machine, and, upon detection of a direction reversal or a speed of the moving part of approximately zero, transitioning to a holding mode by impressing at least one current pattern of string currents in the stator of the machine. The method also includes maintaining the current pattern until a stable equilibrium of moments between the external moment and a braking moment of the machine is established.

Abstract: Motor control circuits and associated methods to control an electric motor provide an ability to synchronize a rotational speed of the electric motor with an external clock signal, resulting in reduced jitter in the rotational speed of the electric motor.

Abstract: Various methods of detecting a found rotor, a lost rotor, a locked rotor and a caught rotor after a power disruption using flux estimates are disclosed. Also disclosed are permanent magnet motor controllers and assemblies suitable for performing one or more of these methods.

Abstract: A power supply system of a transport system includes: a direct-current intermediate circuit; a motor bridge connected to the direct-current intermediate circuit, for supplying power between the direct-current intermediate circuit and the motor that moves the transport appliance; and also an energy storage and a direct-current converter based on indirect power transmission connected between the energy storage and the direct-current intermediate circuit, for controlling the power supply between the energy storage and the direct-current intermediate circuit. The direct-current converter based on indirect power transmission includes: a controllable solid-state switch, for disconnecting the power supply occurring from the energy storage.

Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.

Abstract: A control console to remotely control medical equipment is disclosed having a base with an ergonomically adjustable pedal system. The base further has an opening to receive the pedal system. The pedal system includes a moveable pedal tray with a pedal base. The tray includes a first left pedal assembly and a first right pedal assembly, and an upper tier having a second left pedal assembly and a second right pedal assembly respectively in alignment with and elevated above the first left pedal assembly and the first right pedal assembly. Rollers are rotatable coupled to the moveable pedal tray to allow it roll over a floor. A drive assembly is coupled between the moveable pedal tray and the base. The drive assembly applies a force to the to roll the moveable pedal tray over the floor within the opening of the base.

Abstract: In positioning control of a machine in which residual vibrations are caused due to a low mechanical rigidity, residual vibrations are suppressed within an allowable positioning error, and a positioning time period required for the positioning control is shortened. Based on information of operation conditions and residual vibrations, the amplitude of the residual vibrations of the machine is predicted before execution of positioning, and based on a result of the prediction, a first servo controller (11) which performs positioning control in which suppression of residual vibrations of the machine is not considered or a second servo controller (12) in which suppression of residual vibrations of the machine is considered is automatically selectively used.

Abstract: A method for controlling operation of a multi-phase induction motor may include transmitting a high-speed operation signal by a master computer for high-speed operation of the motor; receiving the signal by a control signal board, and in response to the signal, the control signal board may sense that the master computer is not simultaneously transmitting a low-speed operation signal, and in response to receiving the high-speed operation signal and not simultaneously receiving the low-speed operation signal, closing delta-to-wye contactors and closing contactors in a power section to transmit power to the motor for high-speed operation, whereby the motor is connected to a source of multi-phase power and operates at high-speed; and the control signal board transmitting a first feedback signal to the master computer that the motor is connected to the source of multi-phase power and is running at high speed.

Abstract: Solar panel assemblies herein are configured to couple to a boat trailer in order to charge a battery in a boat secured on top of the trailer. The solar panel assemblies can be configured to have means for 360 rotation to allow efficient sunlight capture and to allow for a more aerodynamic profile when the trailer is being towed. The assemblies herein include a solar panel housing that can include downwardly slanting sides to protect the one or more solar panels mounted within the housing from road debris.

Abstract: This disclosure generally relates to stabilizing energy provided by an energy source, and more particularly to systems and methods for using multiple types of energy storage devices to selectively capture and provide energy. An energy source provides energy, and the energy storage devices selectively capture energy provided by the energy source in excess of an immediate energy requirement of a load and selectively provide energy when the immediate energy requirement of the load exceeds the energy provided by the energy source.

Abstract: The present invention provides wireless power supply systems that wirelessly supply power to a remote device for rapidly charging a charge storage capacitor, which charges a battery with the power stored in the charge storage capacitor. This allows the remote device to be positioned near the inductive power supply for rapid charging of the charge storage capacitor and allows battery charging to continue even after the remote device is removed from the inductive power supply.

Abstract: A charging system and method that improves utilization of available AC power during onboard charging of energy storage systems of electric vehicles. An onboard charging method for an energy storage system of an electric vehicle, the method using an AC power source, includes a) establishing a maximum DC charging current for the energy storage system responsive to a control signal indicating real-time available current/power from the AC source; and b) controlling a charging system to provide an actual DC charging current, up to the maximum DC charging current, to the energy storage system.

Abstract: A device having an electrical plug, such as a charger device, includes a locking member coupled to a carriage that is movable into a housing. Prongs of the device are movable between a retracted position and an extended position along two different travel paths by actuating the prongs or by actuating the carriage.

Abstract: A battery pack usable as a power source of an electric device, is disclosed, in which battery modules are in series; each battery module is configured to include battery cells in series; a discharge controller controls discharge power which is supplied from the battery modules to the electric device; a modulator modulates a voltage of each module between a high voltage and a low voltage which is higher than zero and lower than the high voltage; the high voltage and the low voltage are set to allow a load device of the electric device to operate by the high voltage, and to allow the load device not to operate by the low voltage; and the discharge controller operates by the battery modules, irrespective of whether each module outputs the high voltage or the low voltage.

Abstract: A method and apparatus for providing battery optimization and protection in a low power energy environment is presented. A current configuration of a battery module including a plurality of a particular type of battery is determined. A voltage level of the battery module is detected. A determination is made whether the current configuration of the battery module is a preferred configuration for the particular type of batteries of the battery module. When the determination is that the current configuration of the battery module is not the preferred configuration for the particular type of batteries of the battery module, then the battery module is reconfigured to a preferred configuration for the particular type of batteries of the battery module.

Abstract: In one embodiment of the cold end switch battery management control method, a battery generates an output voltage at a positive terminal thereof. A first control voltage is also generated by an integrated circuit. A gate of a field effect transistor (FET) receives the first control voltage, wherein the FET comprises a drain and a source with the source coupled to a negative terminal of the battery. The FET transmits current towards the battery in response to the gate receiving the first control voltage, wherein the first control voltage is greater than the output voltage, and wherein the first control voltage is less than a breakdown voltage of the integrated circuit.

Abstract: A charging method using a multiphase line voltage for charging an energy storage system (ESS) using a polyphase motor drive circuit communicated to a polyphase motor, the polyphase motor drive circuit including a plurality M of driver stages, one driver stage for each phase of the polyphase motor with each driver stage coupled across the energy storage system.

Abstract: The present inventions, in one aspect, are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a change in terminal voltage of the battery/cell. In another aspect, the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a partial relaxation time of the battery/cell. In yet another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of an overpotential or full relaxation time of the battery/cell. In another aspect the present inventions are directed to techniques and/or circuitry to adaptively charge a battery/cell using data which is representative of a state of charge of the battery/cell.

Abstract: Reduction of wasteful power consumption is envisaged. A power supply function-equipped electronic apparatus (10) is configured to be capable of supplying power to a battery device (20) incorporating a battery (21) by use of a cable (30) connecting the apparatus (10) with the device (20). A detection section (13) detects whether charging of the battery (21) incorporated in the battery device (20) is complete through the cable (30). When charging of the battery (21) is detected to be complete, a power control section (12) turns off power of the power supply function-equipped electronic apparatus (10). This invention can be applied illustratively to gaming machines and the like each composed of a gaming machine body and its controller.

Abstract: An apparatus may comprise first circuitry arranged to draw current from a charging source at multiple current levels and second circuitry arranged to determine a charging current capacity of the charging source using the first circuitry.

Abstract: A control device for a vehicle AC generator which restricts an upper limit of a field current to the maximum field current at a set voltage even when a power generation voltage becomes large, is obtained. In the control device for the vehicle AC generator, in which a DC voltage obtained by rectifying an AC output voltage of an armature coil in the AC generator with a rectifier is applied to a field coil to obtain a field current and the field current is controlled by ON/OFF of a switching element connected in series to the field coil, an upper limit restriction unit in which an upper limit of on-duty of the switching element is set to a set voltage/the DC voltage, is included.

Abstract: Apparatus and associated methods involve a controllable supply adapted for controlling switch phasing and pulse width to substantially equalize power in adjacent quadrants of a sinusoidal source voltage waveform to regulate reactive power drawn from the source. In an illustrative example, the supply may, in some embodiments, deliver power to a load at a level responsive to a commanded input signal. In some examples, the power supplied to the load may be adjusted according to the command input signal to a selected value within an operating range. In some examples, the operating range may include a portion or all of 0 to 100% of rated load. Various embodiments may be adapted to supply unipolar or bipolar load excitation. In some embodiments, high power factor may be maintained over a substantial range of commanded power to the load. Certain embodiments may enhance supply efficiency by capturing and recycling inductive load energy.

Abstract: An apparatus and method for supplying power to circuits of an integrated circuit (IC) from the wasted power in low-swing high-speed differential line drivers used in the IC, is disclosed. In a high speed line driver the load resistors of the driver are connected to a power supply, either the local power supply or the receiver power supply. DC power for the driver is supplied through these resistors. A large portion of this power, supplied from the power supply is wasted in the DC set-up circuit of the differential line driver. It is proposed to use this wasted power to power selected circuits of an IC. The use of this wasted power from the drivers for powering the circuits reduces the overall power dissipation of the system.

Abstract: Hysteretic performance with fixed frequency may be achieved in controlling a power/voltage regulator, by adapting fixed frequency PWM (Pulse Width Modulation) to current-mode hysteretic control. In steady state, the current waveform may be inferred without having to measure the current. In current-mode control, the current may be adjusted proportional to the error voltage. The change in load current may be related to the change in duty-cycle, and the change in duty-cycle may be related to the error voltage, with the change in duty-cycle expressed as a function of the error voltage, to establish current-mode control. This current-mode control may be adapted to perform current-mode hysteretic, if instead of duty-cycle, the same duty-cycle or current shift was effected by a change in phase. A fraction of ripple current (Forc) may be defined as a specified fraction of the peak-to-peak ripple current, establishing a linear relationship between the Forc and the ripple current.

Abstract: A method for regulating the output voltage of a power supply. A boost PWM switching converter adjusts the gate drive signals to a switching transistor and a pass transistor so that the power supply has an operating frequency, Fs, based on a comparison between a parameter and a reference. The parameter may be a ratio of an input voltage to an output voltage, a difference between the output voltage and the input voltage, or the value of an input voltage. In accordance with the comparison between the parameter and the reference, the switching control circuit linearly decreases the operating frequency of the power supply. By changing the operating frequency, the output and input voltages of the power regulator may be almost equal to each other when operating with a control signal having a low duty cycle while maintaining a low output voltage ripple and a low inductor current ripple.

Abstract: A voltage clamping circuit which operates in a stable manner and a switching power source device which enables high-speed operation. In the switching power source device, one source/drain route is connected to an input terminal to which an input voltage is supplied, a predetermined voltage to be restricted is supplied to a gate, and using a MOSFET which provides a current source between another source/drain route and a ground potential of the circuit, a clamp output voltage which corresponds to the input voltage is obtained from another source/drain route. The switching power source device further includes a first switching element which controls a current in an inductor and a second switching element which clamps a reverse electromotive voltage generated in the inductor. The voltage clamping circuit is used in a feedback route for setting a dead time.

Abstract: In a device, a pulse modulation switching logic is provided to generate switching signals of a pulse modulator so as to generate a pulse modulated signal with a first pulse modulation control parameter and a second pulse modulation control parameter. The first pulse modulation control parameter is controlled on the basis of a first control signal, and the second pulse modulation control parameter is controlled on the basis of a second control signal. A first control loop is provided to generate the first control signal from an output signal derived from the pulse modulated signal. A second control loop is provided to generate the second control signal on the basis of the output signal. The first and second control signals are applied to concurrently control the first and second pulse modulation control parameters.

Abstract: Circuits and methods for controlling Pulse Width Modulation (PWM) input of a driver circuit during transition of states are provided. The driver circuit is operative in one of a high state, a low state and a tri-state based on the PWM input. The method includes receiving a tri-state command for transition from the high state to the tri-state. A PWM output signal is enabled to transition from a high logic value to a low logic value for driving the driver circuit from the high state to the low state upon receipt of the tri-state command. The PWM output signal is enabled to transition from the low logic value to a tri-state logic value for driving the driver circuit from the low state to the tri-state upon elapse of a threshold time delay. The PWM input to the driver circuit is based on the PWM output signal.

Abstract: Point-of-load (POL) regulators may be configured as multiphase POL DC-to-DC (direct current to direct current) converters, operating in a multiphase configuration in order to boost the total current available to a system. Current balancing may be performed by utilizing an active low bandwidth current sharing algorithm that uses matched artificial line resistance (droop resistance) while maintaining multi-loop stability during both steady-state and dynamic transient states. The current sharing algorithm may be facilitated through digital communication between the devices, where the digital bus may be a single wire bus, a parallel bus or a clock-and-data bus.

Abstract: A control circuit for a switching supply, include: a first control circuit that selects one of a first signal to switch a boost mode and a step-down mode and a second signal to control an on-period of a switch based on an input voltage, the switch provided between a terminal to which the input voltage is applied and an inductor; and a second control circuit that controls the switching supply based on an output voltage and the selected one of the first signal and the second signal.

Abstract: A control module includes a control unit that is configured to control an electrically adjustable item of furniture, and a switched mode power supply that is configured to supply the control unit. The control unit and power supply are integrated into a common housing. The switched mode power supply is configured to be switched to an idle operating state depending on a ready signal. The switched mode power supply includes, in a second stage, a switched mode regulator component, the supply voltage of which is made available in the idle operating state by a starting circuit in a clocked manner. The starting circuit has an energy store and a resistive element. The energy store and the resistive element are dimensioned so that, in the idle operating state, an interval for charging the energy is longer than an interval for discharging the energy store by the switched mode regulator component.

Abstract: An embodiment of a method for providing a bandgap voltage is described. In such an embodiment, current density of a current in a bandgap circuit is shifted into a current density range having at least a substantially stable scaling factor to enhance temperature stability of the bandgap voltage, and the bandgap voltage output is moved to a target voltage.

Abstract: The present disclosure relates to a system and method for determining the electrical connections of a plurality of nodes. The nodes may include an electrical power distribution system including a plurality of nodes, connected to the power distribution system. At least two of the nodes include node electronics, at least one of the nodes is configured to be operatively coupled to an external power drawing load, and at least one of the nodes upstream from the node configured to be operatively coupled to the external power drawing load is configured to detect power drawn by the external power drawing load. The at least one upstream node is configured to send a node electrical signals using the node electronics indicating that the drawn power was detected. The system is configured to identify the wiring configuration of the plurality of nodes relative to each other based on the node electrical signal.

Abstract: A handheld device providing an internal view through an obscuring wall or other obscuring surfaces of hidden structural or facilities elements (such as wooden studs, electrical, plumbing, or HVAC), or the absence thereof. A continuous and homogeneous luminescent gas or other visual display material whose optical characteristics change as a result of the applied electric field is used both to simultaneously detect capacitance changes associated with hidden objects and to display those detected those objects. Different types of chambers are disclosed for the gas as well as means to prevent fringing effects. The gas is held just at its ionization level at which point it becomes optically visible. Circuitry is disclosed for controlling the energy source based on current draw or light output of the gas and feedback circuitry is disclosed to neutralize the effects of ambient light. Also disclosed is a device and method for the detection and mapping of electric fields.

Abstract: Apparatus and method for measuring current drain and reporting power consumption using current transformer with primary windings made of low ohmic alloy, enabling the use of the secondary coil to power the sensing and reporting circuits eliminating the power wasted by AC-DC power adaptors used for the current sensors. The saving is substantial as the current sensors will not drain a current when the AC outlets are disconnected from a load or when the load is switched off. The apparatus using low ohmic alloy is extended to the structuring of terminals, including power pins, power sockets and combinations to provide a low ohmic sensing elements in AC plugs, outlets, adaptors and extension cables with multi outlets, dissipating the heat from the sensing elements by the plugs and the larger metal heat dissipation.

Abstract: In one embodiment, a method for detecting a load in a switched-mode power converter is provided. The switched-mode power converter includes high and low-side power switches which are configured to be driven respectively by high and low-side drive signals to provide a switching voltage. The high and low-side drive signals include a plurality of dead-time periods. The method includes monitoring a waveform of the switching voltage and at least one of the high and low-side drive signals. The monitored waveform of the switching voltage is compared to the monitored waveform of the at least one of the high and low-side drive signals to determine whether the switching voltage is high or low during at least one of the dead-time periods. A current measurement of the load is determined based on whether the switching voltage is high or low during the at least one of the dead-time periods.

Abstract: A self-contained device intended to be carried by a wheel-tire assembly in order to locate whether the assembly is positioned on the right side or on the left side of a vehicle is described. The device includes two magnetic sensors with axes of maximum sensitivity, the sensors providing two periodic signals that are phase shifted relative to one another. Each signal is representative of variations in the magnitude of the magnetic field detected by the sensor during a revolution of the wheel-tire assembly. The device also includes a processing unit programmed to determine, from the phase shift between the two periodic signals, a direction in which the wheel-tire assembly is rotating and to deduce, from this direction of rotation and from a direction of travel of the vehicle, whether the wheel-tire assembly is located on the right side or on the left side. The two magnetic sensors are intended to be positioned on the wheel-tire assembly at distinct azimuthal locations.

Abstract: A sensor system method of production includes forming first and second structures of the magnetoresistive system, heating the first and second structures, applying a magnetic field in a reference direction to the first and second structures, and cooling the first and second structures to fix a reference magnetization in the first and second structures in the reference direction. The structures are heated to near or above a blocking temperature, whereby the shape anisotropy of the first structure forces the reference magnetization to rotate into a first new orientation and the shape anisotropy of the second structure forces the reference magnetization to rotate into a second new orientation whereby the reference magnetization in the first and second structures rotate in opposite directions. The rotated reference magnetizations of the first and second structures are pinned in the respective new orientation.

Abstract: A rotary eddy current flaw detection probe device has a plurality of ?-shaped eddy current flaw detection probes attached in a rotating disc for detecting flaws in all directions regardless of the flaw direction. Four ?-shaped eddy current testing probes P11 to P22 are arranged around the rotation center Ds1 of a rotating disc 111 and are embedded in the disc 111. The coil planes of detector coils Ds11 to Ds22 of the testing probes P11 to P22 are parallel with each other, and are perpendicular to the rotation plane of the rotating disc 111. The coil planes of the detector coils incline at an angle ? relative to a line Y passing through the centers Ps11 and Ps12 of the probes P11 and P12. The detector coils Dc11 and Dc12 are cumulatively connected to each other and the detector coils Dc21 and Dc22 are differentially connected to each other.

Abstract: This disclosure is directed to current sensing techniques for use within a magnetic current sensor. According to one aspect of the disclosure, a current sensing device includes a magnetic core, and a magnetic field sensor positioned substantially within a cavity formed by an air gap interface of the magnetic core and configured to sense a magnetic field induced by an electrical current that is conducted through a conductor passing through a central opening of the magnetic core.

Abstract: A micro-electromechanical system (MEMS) device that in one embodiment includes at least two MEMS switches coupled to each other in a back-to-back configuration. The first and second suspended elements corresponding to first and second MEMS switches are electrically coupled. Further, first and second contacts corresponding to the first and second MEMS switches are configured such that a differential voltage between the second suspended element and the second contact is approximately equal to a differential voltage between the first suspended element and the first contact. The MEMS device includes at least one actuator coupled to one or more of the first and second suspended elements to actuate one or more of the first and the second suspended elements. In one example, the MEMS device includes one or more passive elements coupled to one or more of the first and second MEMS switches.

Abstract: In a magnetic resonance method and apparatus for imaging a particle that is located in an examination subject, a pulse sequence is emitted that includes an excitation pulse that generates a transverse magnetization of the examination subject from a magnetization appearing in a basic magnetic field, so the particle causes a magnetic interference field in the applied basic magnetic field in a magnetic resonance measurement. After the excitation pulse, at least one spectrally selective refocusing pulse is generated in a non-resonant frequency range at the generation of a spin echo.

Abstract: A method is disclosed for correction of truncations of a magnetic resonance image of an object under examination in the reconstruction of image data from raw data. In at least one embodiment, the method includes determining a number of one-dimensional projections of imaged field of view in the Radon space from the raw data in order to obtain a projection profile; checking each projection profile for whether the projection profile exhibits a truncation; if the respective checked projection profile exhibits a truncation, expanding the projection profile for correcting the truncation in that the projection profile is extrapolated in accordance with a predetermined extrapolation model in the area in which it exhibits the truncation; and reconstructing image data based on the expanded projection profiles in which the truncation of the image of the object under examination is corrected.