Abstract: An aerial vehicle control method includes, upon receipt of an auto return instruction, controlling power output of an aerial vehicle in accordance with return point position information to cause the aerial vehicle to return to a return point indicated by the return point position information, and during returning to the return point, if a flight control instruction is detected, adjusting the power output of the aerial vehicle in accordance with the flight control instruction.

Abstract: A method for detecting a target object includes: identifying a target object in a monitored region, and calculating first state information of the target object with respect to this detection apparatus; estimating second state information of the target object after a pre-set delay duration value according to the first state information; and performing a processing operation on the target object according to the estimated second state information. The present disclosure can quickly and accurately complete the tracking and state estimation of a target object, which adds new functions and satisfies automation and intelligence requirements of a user for object tracking and movement state estimation.

Abstract: A regulator includes a body, a first cage positioned in the body, a diaphragm positioned within the body, and a second cage operatively connected to the diaphragm. The body has an inlet, an outlet, and a passage formed between the inlet and the outlet and the first cage is positioned adjacent the passage. The second cage moves with the diaphragm and is positionable on a first side of the diaphragm, opposite the first cage, or on a second side of the diaphragm such that the second cage is positioned within the first cage and is movable relative to the first cage.

Abstract: A valve body and a control valve including such a valve body, the valve body including an inlet, an outlet, and a valve port defined therebetween. The valve body also includes a plurality of discrete flow channels that extend between the inlet and the valve port to distribute fluid flow to the valve port in a manner that equalizes the velocity of fluid at the perimeter of the valve port. The plurality of discrete flow channels includes (i) one or more first flow channels arranged to direct a first amount of the fluid flow to a front portion of the valve port, (ii) one or more second flow channels arranged to direct a second amount of the fluid flow to a rear portion of the valve port, and (iii) one or more third flow channels arranged to direct a third amount of the fluid flow to one or both side portions of the valve port.

Abstract: In a sanitary installation part (1) which, along with a functional unit (7), forms a flow volume regulator, it is proposed that a regulating element (13), which can be adjusted along an adjustment path, be coupled to a temperature-sensitive drive unit (15) such that different regulating positions of the regulating element (13) are set in dependence on the temperature of the medium flowing through the installation part (1), wherein the different regulating positions realize in each case different volume-flow dependencies (11, 12, 45, 48) and/or flow resistances.

Abstract: A computer program product and an apparatus are provided. The computer program product includes a computer readable medium and program instructions embodied therein, wherein the program instructions are executable by a processor to cause the processor to perform various operations. The operations include obtaining, for each phase in a voltage regulator having multiple phases, values of at least one operating parameter over a period of time. The operations further include determining, for each phase in the multi-phase voltage regulator, a wear score as a function of the obtained values of at least one operating parameter. Still further, the operations include selecting a default phase, from among the multiple phases, that has a wear score indicating that the phase has less cumulative wear than any of the other phases, and instructing the voltage regulator to turn on the selected phase as a default phase when only one phase is turned on.

Abstract: In a described example, a method includes using a power supply, supplying an output voltage that varies in response to a reference voltage; detecting a voltage ramp in an input reference voltage; generating an offset voltage waveform; adding the offset voltage waveform to the input reference voltage to generate a second reference voltage; and using the second reference voltage, operating the power supply to supply the output voltage.

Abstract: There is provided a regulator including: a first transistor connected between an input terminal and an output terminal; a feedback circuit configured to control a control voltage of a control electrode of the first transistor so that a voltage of the output terminal reaches a target voltage according to a feedback voltage proportional to an output voltage; a second transistor having a control electrode to which the control voltage is applied in common with the first transistor; a first resistor connected with the second transistor in series between the input terminal and the output terminal; and a current limiting circuit configured to detect a voltage generated across the first resistor and to change the control voltage so as to limit a current flowing through the first transistor.

Abstract: A gateway includes a processor operable to manage energy use at a site. The processor is configured to receive network device data from a long range communication network, wherein the network device data is initiated from at least one of a mobile device or a cloud service to alter an operating condition of a network device located at a site. The processor is also configured to detect an availability of the network device connected to a second network configured as a local network, and format the network device data to a message bus format configured to be output to a communication device configured to access the second network. The processor is further configured to receive response data from the network device formatted to be communicated using the second network, and translate the received response data to another format capable of being output over the long range communication network.

Abstract: A system on chip (SOC) is provided. The SOC includes a system core logic, a voltage regulator, a clock generator and a system balance circuit. The voltage regulator provides an operating voltage to the system core logic and receives a current setting signal to set the voltage regulator to a low current mode or a high current mode. The clock generator provides a reference clock signal. The system balance circuit receives the reference clock signal to provide the current setting signal to the voltage regulator and provides the system clock signal to the system core logic, wherein the current setting signal is used to set the voltage regulator to the high current mode before the system clock signal is enabled, and set the voltage regulator to the low current mode after the system clock signal is enabled.

Abstract: A voltage regulation circuit (2) comprises first (4) and second (6) voltage regulators each arranged to receive an input voltage (Vin) and a respective reference voltage; and first (18) and second (30) reference voltage sources arranged to provide the first and second reference voltages respectively. In a first mode of operation, the first regulator varies the regulated output voltage in response to a difference between the regulated output voltage (Vout) and the first reference voltage. In a second mode of operation, the second regulator varies the regulated output voltage in response to a difference between the regulated output voltage and the second reference voltage. The second voltage regulator is arranged to provide a greater maximum output current than the first voltage regulator. The circuit further comprises a switch portion (8) arranged to provide a third mode of operation in which the first regulator provides the regulated output voltage and the second regulator provides additional output current.

Abstract: A bandgap voltage reference circuit configured to generate a bandgap reference voltage is provided. The bandgap voltage reference circuit includes a bandgap current generating circuit, a differential pair circuit and a flipped voltage follower. The bandgap current generating circuit converts the bandgap reference voltage into a bandgap current and generates a first voltage and a second voltage according to the bandgap current. The differential pair circuit is coupled to the bandgap current generating circuit to receive the first voltage and the second voltage and configured to reduce a voltage difference between the first voltage and the second voltage and generate a third voltage. The flipped voltage follower is coupled to the differential pair circuit to receive the third voltage and generates the bandgap reference voltage accordingly.

Abstract: A load control device may control the amount of power provided to an electrical load utilizing a phase control signal that operates in a reverse phase control mode, a center phase control mode, and a forward phase control mode. A load control device may be configured to determine that the electrical load should be operated via a phase control signal operating in a forward phase-control mode. After determining to operate the electrical load via the phase control signal in the forward phase-control mode, the load control device may provide the phase control signal in a reverse phase-control mode for a predetermined period of time to the electrical load, for example, to charge a bus capacitor of the electrical load. Subsequently, the load control device may be configured to switch the phase control signal to the forward phase-control mode and provide the phase control signal in the forward phase-control mode to the electrical load.

Abstract: A pedal assembly for a vehicle, including a pedal arm moveable between a first position and a second position, and a pivot shaft is operatively attached to the pedal arm. The pivot shaft defines a pivot axis. A housing having a mount adapted for attachment to the vehicle is provided. The housing defines a bore supporting at least a portion of the pivot shaft to permit rotation of the pedal arm about the pivot axis. A debris filtering mechanism is formed in at least one of the pivot shaft and the bore to direct contaminants away from the pedal assembly and out of the bore as the pedal arm moves between the first position and the second position.

Abstract: The invention relates to a device for generating a plurality of clock signals or high-frequency signals. The devices includes a reference signal generator, which is connected to an oscillator and generates at its output a reference signal with a reference frequency fx. The device also includes at least one signal processor, for example, a DDS, which is connected to the reference frequency generator via a first signal line and to which the reference signal with the reference frequency fx is supplied, and which is configured to generate an output signal having a frequency less than fx.

Abstract: A multiprocessor system includes a first set of processors and a second set of processors. The first set of processors include a first set of standard cells and is configured to operate in a first frequency range. The second set of processors include a second set of standard cells and is configured to operate in a second frequency range. The first set of processors and the second set of processors have the same register-transfer level (RTL) description. Cells in the first set of standard cells have corresponding cells in the second set of standard cells with different characteristics. The first frequency range includes one or more frequencies higher than a maximum frequency in the second frequency range. The system also includes a clock generator that provides the same frequency to the first set of processors and the second set of processors.

Abstract: This disclosure relates generally to digital synchronous circuits that introduce clock skew without requiring clock buffers in a clock network. In one embodiment, the digital synchronous circuit includes a first flip flop and a second flip flop. The first flip flop is synchronized to be transparent and to be opaque in accordance with a first clock signal while the second flip flop is configured such that the second flip flop is synchronized to be transparent and to be opaque in accordance with a second clock signal. However, the second flip flop is configured to generate the first clock signal such that the second flip flop provides the first clock signal in a first clock state in response the second flip flop becoming transparent and provides the first clock signal in a second clock state in response the second flip flop becoming opaque thereby providing a clock skew without clock buffers.

Abstract: A method according to one embodiment includes communicating a wireless advertisement that identifies a clock status of a real-time clock of the access control device, wherein the clock status includes a clock status value indicating that the real-time clock has not been set, establishing a wireless communication connection with a computing device in response to the wireless advertisement, transmitting a session random value to the computing device, receiving a clock update token from the computing device, wherein the clock update token is indicative of an authority of the computing device to update the real-time clock of the access control device, authenticating the clock update token based on at least the session random value, and updating the real-time clock based on a received update time in response to successful authentication of the clock update token.

Abstract: An interactive multimedia assistant device (IMAD) includes an interactive core component (ICC) and a swappable personality customizable skin (SPCS) for performing interactive communication and control actions based on multimedia inputs. The ICC includes multimedia sensors for recognizing multimedia inputs; a storage medium for storing the multimedia inputs and media content; a controller for processing the multimedia inputs, modulating an audio output, and performing control actions based on the multimedia inputs; output devices for rendering outputs of the controller, and one or more communication interfaces for communicating with the SPCS. The SPCS is operably coupled on and activated by the ICC. The SPCS is programmed with a unique identifier that identifies a personality of the SPCS. The SPCS directs and programs behavior of the ICC based on the unique identifier, thereby allowing the ICC to assume the personality for performing interactive communication and control actions based on the multimedia inputs.

Abstract: A wearable device exhibiting a capacitive sensing function includes a fabric having a plurality of touch-sensing electrode patterns and a plurality of signal lines distributed therein; a controlled device integrated into the fabric; and a control circuit disposed at an edge of the fabric and being in communication with the signal lines for controlling the controlled device according to a capacitance change according to a capacitance change caused by a touch or gesture of a user on the fabric.

Abstract: According to various embodiments of the present disclosure, a docking station includes a base housing comprising a first surface having a recessed portion, a second surface directed in an opposite direction to the first surface, and a side surface at least partially surrounding a space between the first surface and the second surface, a slide housing slidably mounted on the recessed portion to open and close at least a part of the recessed portion, and a connection member disposed on the recessed portion, in which as the slide housing slides, the connection member is hidden or exposed, and in a state where the at least the part of the recessed portion is opened, the slide housing is positioned inclined with respect to the first surface or the second surface. The docking station described above may be implemented variously depending on embodiments.

Abstract: An electronic device may be provided with a display mounted in a housing. The display may have an array of display pixels that provide image light to a user. The array of display pixels may form an active display structure with a rectangular shape. The rectangular active display structure may be surrounded by an inactive border region. Optical structures such as upper structures formed from a sheet of glass and lower optical structures that lie beneath the sheet of glass may be configured to bend light from the display pixels along the periphery of the active display structure. The upper optical structures may have an area that is larger than the area of the active display structure, so that the presence of the optical structures may serve to enlarge the apparent size of the display. The lower and upper optical structures may have curved surfaces for bending the light.

Abstract: A display apparatus includes a printed circuit board on which are mounted a light emitter to emit infrared rays and a light receiver to receive the infrared rays, and a light guide member surrounding the perimeter of a display module, to guide the infrared rays emitted from the light emitter to be received by the light receiver via a touch space. An interference fit between the printed circuit board and the light guide member is provided through elastic deformation of at least one of the printed circuit board or the light guide member.

Abstract: A method is performed at a computing system, the computing system including: a first housing that includes a primary display, and a second housing containing (i) a physical keyboard and (ii) a touch-sensitive secondary display (TSSD). The method includes displaying, on the primary display, a first user interface. While the TSSD is operating in an adaptive display mode, the method includes: displaying, on a respective portion of the TSSD, application-specific user interface elements that are selected based on current state of the first user interface for the application. The method further includes, in response to detecting a press of a key via the physical keyboard: displaying, on the primary display, representations of available display modes for the TSSD. The method additionally includes, receiving a selection of a representation of another display mode of the available display modes; and operating the TSSD in the other display mode.

Abstract: A display device includes a substrate having a first area, a second area, and a bending area disposed between the first area and the second area. An inner wiring is disposed in the first area. An outer wiring is disposed in the second area. An interlayer insulating layer covers the inner wiring and the outer wiring, and includes a first contact hole. A conductive layer is disposed on the interlayer insulating layer, and is connected to the inner wiring or the outer wiring through the first contact hole. An inorganic protective layer covers at least a portion of the conductive layer and includes an inorganic insulating material.

Abstract: Input device attachment techniques are described. In one or more implementations, a device includes a portion (e.g., an input portion or cover) is configured to be positioned over a display device of a computing device to cover the display device. The device also includes a spine (e.g., a mid-spine) that is physically attached to the portion in a manner that supports rotational movement of the portion in relation to the display device. The physical attachment of the spine is configured to be removable using a magnetic coupling between the spine and a surface of the computing device that includes the display device.

Abstract: A distortion calibration system generates a distortion map for a head-mounted display (HMD). The system includes a camera that takes pictures of a test pattern displayed by the HMD. The images are taken at different camera positions and/or states of the HMD. The system determines a distortion map using the captured images, and uploads it to the HMD as part of, e.g., an optical model. The HMD comprises an electronic display, an eye tracking unit, an optics block, and a module. The module estimates distortion values based on eye tracking information from the eye tracking unit, an optical model, and a state of the HMD (e., a distance between the optics block and the electronic display). The module determines an adjusted state of the HMD using the estimated distortion values, the eye tracking information, and the optical model, and adjusts the state of the HMD to the adjusted state.

Abstract: An electronic device may have a flexible display that overlaps an axis. The display may be supported by a housing. The housing may have first and second portions that rotate relative to each other about the axis. The housing may be placed in an unfolded configuration to support the display in a planar state. The housing may also be placed in a folded configuration by rotating the first and second portions relative to each other. A hinge mechanism may be used to ensure adequate separation between the first and second portions when the housing is bent. Movable flaps may be retracted when the housing is bent to create room for a bent portion of the display.

Abstract: The disclosed technology includes a thermal management hinge connecting at least two hinged components of a computing device. The thermal management hinge has at least two different thermal orientations for managing thermal conditions within each of the hinged components. For example, the thermal management hinge may have a thermally conductive orientation and the thermally insulating orientation.

Abstract: An electronic device is provided which includes a housing including a through-hole positioned in a side face, a socket disposed within the housing, and having an entrance aligned with the through-hole, a biasing member mounted on the housing, and disposed between the through-hole and the entrance of the socket, and a tray in which at least one storage medium is seated. The tray is inserted into/extracted from the housing through the through-hole, and inserted into the socket from the inside of the housing through the entrance. During the insertion or extraction of the tray, the biasing member may limit a movement range of the storage medium in the tray.

Abstract: The present invention provides an ATX specification power supply comprising redundant power supply architecture. A casing where the ATX specification power supply is located includes an ATX specification housing and a frame provided in the ATX specification housing. The frame is defined with a plurality of power module assembly regions and a modulation module assembly region in the ATX specification housing. The power module assembly regions are for a plurality of power modules to be provided therein, and the modulation module assembly region is for a power modulation module to be provided therein. The plurality of power modules and the power modulation module are further connected to a power integration backplate provided in the ATX specification housing, enabling the ATX specification power supply to construct redundant power supply architecture.

Abstract: A solid state drive apparatus includes a housing having a first accommodation space and a second accommodation space; a substrate mounted in the first accommodation space, wherein at least one non-volatile memory chip is mounted on the substrate; and a heat dissipation member mounted in the second accommodation space and including an isolation barrier that defines a boundary between the second accommodation space and the first accommodation space and a plurality of fin portions that extend from the isolation barrier away from the first accommodation space, wherein a plurality of through air holes are provided in a side of the housing adjacent the second accommodation space.

Abstract: An apparatus is described that includes an enclosure including a first sidewall, a second sidewall aligned parallel to the first sidewall, a front wall, a rear wall aligned parallel to the front wall, and at least one structure disposed between the front wall and the rear wall. The apparatus also includes a heat generating element within the enclosure, the heat generating element being mounted to a first surface of the at least one structure and a flexible sheet assembly configured to dissipate heat generated by the heat generating element away from the at least one heat generating element and across a lateral surface of the rear wall of the enclosure.

Abstract: A control device for fan state includes fan connectors arranged on a substrate and connected with at least one fan. The substrate and the fan are arranged in a case of a computer. The substrate is provided with at least one communication port, at least one microphone and a microcontroller. The communication port receives temperature signals transmitted by the computer. The microphone receives volume signals within the case. A microcontroller is electrically connected with the fan connectors, the communication port and the microphone. After the microcontroller receives the temperature signal and the volume signal, the microcontroller uses them to determine whether a value of the temperature signal or the volume signal is larger than its given value. If the answer is yes, the microcontroller controls a rotational speed of the fan, turns off the fan, or provides control items displayed on a screen of the computer to choose.

Abstract: A convertible information handling system in a clamshell configuration provides a maximum housing surface temperature at a predetermined portion, such as a fan exhaust, that is greater than a maximum temperature in a tablet configuration. Upon detection of transition to the tablet configuration, a burst application by a thermal rejection device reduces the temperature at the predetermined portion to aid in achieving the maximum temperature of the tablet configuration. For example, a burst application may include running a fan at full speed for a defined time or decreasing a pressure within a vapor chamber.

Abstract: Systems and methods for managing temperatures of wearable device components are disclosed. In one aspect, a wearable electronic device includes glasses, a wireless transmitter, an ambient temperature sensor, hardware processing circuitry, and a hardware memory storing instructions that when executed configure the hardware processing circuitry to determine an ambient temperature using the ambient temperature sensor, determine a maximum temperature of the wearable electronic device based on the ambient temperature, determine a temperature of the wearable electronic device, determine a difference between the maximum wearable temperature and the determined temperature of the wearable electronic device, and adjust a transmission rate of the wireless transmitter based on the difference.

Abstract: Accurate and reliable techniques for wirelessly powering a tablet device are disclosed.

Abstract: A smart cord reel cable including at least one sensor for measuring cord or cord reel usage, a memory for receiving sensor input to create usage records, and a processor for analyzing the usage records to provide information for maintenance status indication and/or usage analytics.

Abstract: Approaches, techniques, and mechanisms are disclosed for a centralized backup power support system that improves testability of non-volatile dual in-line memory modules (NVDIMM) on Automatic Test Equipment (ATE) testers and in-system tests. An NVDIMM includes both volatile memories and non-volatile memories. According to an embodiment, a compact backup power distribution board is powered with an external power supply with an individual protection circuit. The backup power distribution board has an unlimited energy capacity for any density of NVDIMM and zero charge waiting time. According to an embodiment, instead of using an electric double-layer capacitor (EDLC) to support backup power, a resistor is used instead of an EDLC on each backup power module. There is no charging time when the backup power module does not have EDLC cells, resulting in significant reduction in test time and production cost and increase in production output.

Abstract: Provided is an apparatus and method for a digital power supply that can provide independent power control for two or more electrical loads. Some disclosed embodiments provide continuous, variable power and other disclosed embodiments provide discrete power levels. Disclosed embodiments may reduce the magnitude of harmonic currents and/or flicker introduced into a power system. Embodiments include a microprocessor that delivers power to electric loads using phase-controlled AC current. In some embodiments, the microprocessor may calculate a power array corresponding to a requested power for each electric load. Logic is provided for populating the power array in a pattern that reduces the magnitude of harmonic currents and flicker. Portions of the disclosure include a band controller for delivering power to achieve and maintain a desired target temperature, and a wireless controller for controlling temperature from a remote device.

Abstract: The present disclosure provides devices and techniques for managing power distribution in a device. The devices and techniques include determining a first power level of a first battery of the device, and determining a second power level of a second battery of the device. Also, the devices and techniques include adjusting an input current limit of a system charger based on the first power level and the second power level. Additionally, the devices and techniques include steering power from one or both of the first battery or the second battery to at least one processor of the device based on the input current limit.

Abstract: An image forming apparatus that enters a first power state in which a predetermined function is executable and a second power state in which the predetermined function is not executable includes a detection unit configured to detect an object; a return unit that a user operates in order to shift the image forming apparatus from the second power state to the first power state; a notification unit configured to, in a case where an object has been detected by the detection unit, notify a user of a position of the return unit; and a power-source control unit configured to, in a case where the return unit has been operated by the user, shift the image forming apparatus from the second power state to the first power state.

Abstract: The disclosure generally relates to dynamic clock and voltage scaling (DCVS) based on program phase. For example, during each program phase, a first hardware counter may count each cycle where a dispatch stall occurs and an oldest instruction in a load queue is a last-level cache miss, a second hardware counter may count total cycles, and a third hardware counter may count committed instructions. Accordingly, a software/firmware mechanism may read the various hardware counters once the committed instruction counter reaches a threshold value and divide a value of the first hardware counter by a value of the second hardware counter to measure a stall fraction during a current program execution phase. The measured stall fraction can then be used to predict a stall fraction in a next program execution phase such that optimal voltage and frequency settings can be applied in the next phase based on the predicted stall fraction.

Abstract: Provided are devices, systems and methods relating to controller interactions with storage. One embodiment includes an apparatus comprising a controller for communication with a storage device through a signal line, wherein the controller is configured to detect a first signal on the signal line indicating the presence of the storage device on the signal line, and provide a second signal on the signal line to reset the storage device after a detection that the first signal indicates the presence of the storage device. Other embodiments are described and claimed.

Abstract: A computer-implemented method enables global throttling of processing nodes in a rack-configured information handling system (RIHS). A rack-level management controller receives power-usage data and operating parameters associated with processing nodes within separately-controlled blocks of the RIHS. A power subsystem of the RIHS regulates an amount of power supplied to the processing nodes of the RIHS based on the power-usage data and operating parameters for the processing nodes and a total amount of available power for distribution within the RIHS. In response to detecting a condition that reduces the total amount of available power for distribution within the IHS, the management controller autonomously initiates global throttling of the processing nodes within the IHS to reduce power consumption by at least one of the processing nodes. The global throttling is completed via a signal transfer over a select Ethernet cable wire to connected block controllers that control the processing nodes.

Abstract: Aspects of the present invention include a device including processing circuitry that detects a first user action according to a first signal received from a first sensor while operating in a first mode, the first user action being gripping and lifting up of the device, changes an operation mode from the first mode to a second mode based on the first user action, detects a second user action according to a second signal received from a second sensor while operating the second mode, the second user action being a touch operation, performs an operation based on the second user action, and changes the operation mode from the second mode to a third mode after a predetermined period of time elapses, the second mode consuming more power than the first mode, and the third mode consuming more power than the first mode.

Abstract: A first optimal CPU frequency that produces minimal power consumption for a CPU/platform combination may be calculated by using an Efficiency Aware Race to Halt (EARtH) algorithm, which ignores the power efficiency curve of the voltage regulator (VR). These results may then be modified by applying the power efficiency curve of the associated VR to determine a second optimal CPU frequency that produces power consumption that is less than the value calculated by the EARtH algorithm.

Abstract: A frequency governing method for a processor includes reading power management information from the processor. The processor operates in an active state or one of multiple power saving states. The power management information includes first information indicating occupancy of a first core of the processor in the active state and second information indicating occupancy of the first core in a first power saving state. The method includes generating an effective utilization based on the first information and the second information. The method includes setting a target frequency by performing a selected action of a first action including increasing the target frequency and a second action including decreasing the target frequency with respect to a current frequency of the processor based on the effective utilization. The selected action is selected according to the effective utilization. The method includes instructing the processor to operate the first core at the target frequency.

Abstract: Methods and apparatus for isolation of sub-system resources (such as clocks, power, and reset) within independent domains. In one embodiment, each sub-system of a system has one or more dedicated power and clock domains that operate independent of other sub-system operation. For example, in an exemplary mobile device with cellular, WLAN and PAN connectivity, each such sub-system is connected to a common memory mapped bus function, yet can operate independently. The disclosed architecture advantageously both satisfies the power consumption limitations of mobile devices, and concurrently provides the benefits of memory mapped connectivity for high bandwidth applications on such mobile devices.

Abstract: A display apparatus includes a display panel and a power supply. The display panel displays an image at a first driving frequency in a normal mode and displays an image at a second driving frequency in a low power mode. The second driving frequency is lower than the first driving frequency. The power supply outputs a first initialization voltage at a first level to the display panel during an active period of the low power mode. The power supply outputs a second initialization voltage at a second level to the display panel during at least a portion of a blank period of the low power mode. The second level is higher than the first level.