Abstract: A method of transmitting power of a wireless power transmitter, including a phase of sequentially transmitting a detection signal to a wireless power receiver a plurality of times through a plurality of transmission coils to detect that the wireless power receiver is present; a phase of identifying a transmission coil that has received the signal strength indicator transmitted from the wireless power receiver in response to the detection signal transmitted a plurality of times; a phase of selecting, as a power transmission coil, a transmission coil that has received the signal strength indicator having the most or largest value among the plurality of transmission coils that have received the signal strength indicator as a power transmission coil; a phase of receiving an FOD status packet from the wireless power receiver; a first determination phase of determining whether a foreign object is present in a charging area of the wireless power transmitter based on the FOD status packet; and a power control phase o

Abstract: A wireless power transmitter for transmitting power to a wireless power receiver, including a controller configured to determine whether a foreign object is present in a charging area of the wireless power transmitter; and a transmission part configured to transmit wireless power according to whether the foreign object is present, wherein the controller receives a signal including an FOD status packet from the wireless power receiver, and determines whether the foreign object is present in the charging area of the wireless power transmitter based on the FOD status packet; wherein the controller is set to be operated in a first power transfer mode when determining that the foreign object is present in the charging area, or to be operated in a second power transfer mode when determining that the foreign object is not present in the charging area; and wherein the controller determines whether the foreign object is present in the charging area based on information other than information included in the FOD status

Abstract: A method of transmitting power by a wireless power transmitter, the method including receiving a plurality of packets including a foreign object detection (FOD) status packet from a wireless power receiver; determining whether a foreign object is present in a charging area of the wireless power transmitter on the basis of the FOD status packet; and transmitting, to the wireless power receiver, a response signal indicating whether the foreign object is present in the charging area of the wireless power transmitter on the basis of a result of the determination, wherein the response signal is determined using a measured peak frequency of a power signal transmitted by the wireless power transmitter and a reference peak frequency included in the FOD status packet received from the wireless power receiver, wherein the plurality of packets further include at least one of a signal strength packet, an end power transfer packet, a power control hold-off packet, a configuration packet, an identification packet for trans

Abstract: A camera module includes a movable element; a lens coupled to the movable element; a first substrate fixed to the bottom surface of the movable element; an image sensor disposed on the first substrate; a second substrate disposed below the first substrate; and a wire for connecting the second substrate to the movable element. At least a part of the wire is made of a shape memory alloy.

Abstract: A wireless charging method in a wireless power transmitter, the method including sensing an object in a charging region, measuring a quality factor value, receiving information including a reference quality factor value, detecting a foreign object using the measured quality factor value and the reference quality factor value, and transmitting a response signal that includes ACK information or NAK information depending on whether or not the foreign object is detected. Further, the wireless power transmitter transmits information including a first guaranteed power value when the response signal includes the ACK information, and transmits information including a second guaranteed power value when the response signal includes the NAK information, and the first guaranteed power value is greater than the second guaranteed power value.

Abstract: The present embodiment relates to a lens driving device comprising: a housing; a bobbin disposed inside the housing; a coil disposed at the bobbin; a magnet disposed in the housing and facing the coil; an elastic member coupled to the housing and the bobbin; and a damper disposed at the elastic member, wherein the elastic member comprises an outer part coupled to the housing, an inner part coupled to the bobbin, and a connection part for connecting the outer part and the inner part; and the damper is disposed at the connection part.

Abstract: Disclosed is a power generation device including a case including a through hole configured to pass therethrough in a first direction and form an inner surface, a duct disposed in the through hole of the case and having a flow path such that a first fluid flows in a second direction perpendicular to the first direction, a first thermoelectric module including a first thermoelectric device disposed on a first surface of the duct and a first fin disposed in the first thermoelectric device, a second thermoelectric module including a second thermoelectric device disposed on a second surface facing the first surface of the duct and a second fin disposed in the second thermoelectric device, a plurality of first guide portions coupled to the case and disposed on the duct while facing each other, and a second guide portion disposed on a third surface formed between the first surface and the second surface of the duct.

Abstract: Exemplary liquid lenses generally include two liquids disposed within a microfluidic cavity disposed between a first window and a second window. Applying varying electric fields to these liquid lenses can vary the wettability of one of the liquids with respect to this microfluidic cavity, thereby varying the shape and/or the curvature of the meniscuses formed between the two liquids and, thus, changing the optical focal length or the optical power of the liquid lenses. These liquids can expand and/or contract as result of varying temperatures. The exemplary liquid lenses include one or more thermal compensation chambers to allow these liquids to expand and/or contract without impacting the integrity of the microfluidic cavity, for example, without bowing or deflecting the first window and/or the second window.

Abstract: A liquid lens apparatus includes a first substrate and a sensor. The first substrate has first and second opposing surfaces, a central portion, and a peripheral portion outside of the central portion. The sensor is formed lithographically on either the first or second surfaces of the peripheral portion of the first substrate such that the sensor is on an exterior surface of the liquid lens apparatus. The sensor is configured to detect a temperature of the liquid lens apparatus to enable compensation for thermal expansion or contraction of the liquid lens apparatus resulting from changes in temperature of the liquid lens apparatus.

Abstract: The present embodiments relate to a dual camera module comprising: a first camera module including a first lens module and a first image sensor disposed below the first lens module; and a second camera module including a second lens module and a second image sensor disposed below the second lens module, wherein the second camera module has a wider angle of view than the first camera module, and the second image sensor is disposed at a position higher than the first image sensor.

Abstract: A wireless power transmitter for transmitting power to a wireless power receiver, including a controller configured to determine whether a foreign object is present; and a transmission part configured to transmit wireless power according to whether the foreign object is present, wherein the controller receives a foreign object detection status packet including at least one of a reference quality factor and a reference peak frequency from the wireless power receiver, and detects whether the foreign object is present based on the foreign object detection status packet, wherein the controller transmits a NAK response indicating that the foreign object is present or an ACK response indicating that the foreign object is not present to the wireless power receiver, and wherein the transmission part transmits a first power to the wireless power receiver according to the transmitted NAK response or transmits a second power greater than the first power to the wireless power receiver according to the transmitted ACK res

Abstract: A power transmission method for a wireless power transmitter, the power transmission method including transmitting sequentially a plurality of sensing signals to a wireless power receiver through transmission coils to sense a presence of the wireless power receiver; identifying transmission coils that receives a signal strength indictor transmitted from the wireless power receiver in response to the plurality of sensing signals; selecting, as a power transmission coil, a transmission coil that receives a signal strength indicator having the largest amount or the largest value among the transmission coils, receiving, from a wireless power receiver, a foreign object detection (FOD) status packet including information on a reference quality factor or a reference peak frequency; determining whether a foreign object is present in a charging area of the wireless power transmitter based on the FOD status packet; and generating a foreign object detection indicator indicating whether the foreign object is present in t

Abstract: A method of transmitting power of a wireless power transmitter, including a receiving phase of receiving a signal including an FOD status packet from a wireless power receiver; a first determination phase of determining whether a foreign object is present in a charging area of the wireless power transmitter based on the FOD status packet; a power control phase of controlling power transmission in a first power transfer mode upon determining that the foreign object is present in the charging area in the first determination phase, or controlling power transmission in a second power transfer mode upon determining that the foreign object is not present in the charging area in the first determination phase; and a second determination phase of determining whether the foreign object is present in the charging area based on information other than information included in the FOD status packet, while controlling power transmission in one of the first power transfer mode and the second power transfer mode by the power c

Abstract: A wireless power receiver that receives power from a wireless power transmitter, the wireless power receiver including a communication unit configured to communicate with the wireless power transmitter; and a controller, wherein the controller generates a foreign object detection (FOD) status packet including information on a reference quality factor or a reference peak frequency, and a packet having a length of eight bit, wherein the communication unit transmits the FOD status packet to the wireless power transmitter, wherein the communication unit receives, from the wireless power transmitter, a foreign object detection indicator indicating whether a foreign object is present in a charging area of the wireless power transmitter in response to the MD status packet, wherein the controller performs differential bi-phase encoding for binary data of the packet having a length of eight bits, wherein the controller performs byte encoding for binary data of the differential bi-phase encoded packet, wherein the comm

Abstract: A power reception method for a wireless power receiver, the power reception method including storing information on a reference quality factor and a reference peak frequency; generating a foreign object detection (FOD) status packet including the information on the reference quality factor and the reference peak frequency and a packet having a length of eight bits; transmitting the FOD status packet to a wireless power transmitter; receiving a foreign object detection indicator indicating whether a foreign object is present in a charging area of the wireless power transmitter in response to the FOD status packet; performing differential bi-phase encoding for binary data of the packet having a length of eight bits; performing byte encoding for binary data of the differential bi-phase encoded packet; and transmitting the byte encoded packet to the wireless power transmitter, wherein the byte encoding is inserting a start bit, a stop bit, and a parity bit into binary bit stream of the differential bi-phase encod

Abstract: A method of receiving power by a wireless power receiver, the method including transmitting, to a wireless power transmitter, a plurality of packets including a foreign object detection (FOD) status packet; and receiving, from the wireless power transmitter, a response signal indicating whether a foreign object is present in a charging area of the wireless power transmitter, wherein the response signal is determined using a measured peak frequency of a power signal transmitted by the wireless power transmitter and a reference peak frequency included in the FOD status packet received from the wireless power receiver, and wherein the plurality of packets further include at least one of a signal strength packet, an end power transfer packet, a power control hold-off packet, a configuration packet, an identification packet for transmitting receiver identification information, an extended identification packet, a general request packet, a special request packet, a control error packet, a renegotiation packet, a 24

Abstract: A wireless power receiver that receives power from a wireless power transmitter, the wireless power receiver including a wireless communication unit configured to communicate with the wireless power transmitter; and a controller, wherein the wireless communication unit transmits a first foreign object status packet and a second foreign object status packet to the wireless power transmitter, wherein the wireless communication unit receives, from the wireless power transmitter, a first foreign object detection indicator including a positive response signal or a negative response signal to the first foreign object status packet, wherein the wireless communication unit receives, from the wireless power transmitter, a second foreign object detection indicator including a positive response signal or a negative response signal to the second foreign object status packet, and wherein the controller is configured to proceed to a first power transmission procedure when both the first foreign object detection indicator a

Abstract: A wireless power receiver that receives power from a wireless power transmitter, the wireless power receiver including a communication unit configured to communicate with the wireless power transmitter; a memory configured to store information on a reference quality factor and a reference peak frequency; and a controller, wherein the controller generates a foreign object detection (FOD) status packet including information on the reference quality factor or the reference peak frequency, wherein the communication unit transmits the FOD status packet to the wireless power transmitter, wherein the communication unit receives, from the wireless power transmitter, a foreign object detection indicator indicating whether a foreign object is present in a charging area of the wireless power transmitter in response to the FOD status packet, wherein the FOD status packet has a length of two bytes, wherein one byte of the FOD status packet includes a 6-bit reservation field and a 2-bit mode field, and wherein all bits of

Abstract: A lens driving device includes a housing; a bobbin disposed in the housing; a magnet and a dummy member, arranged at the housing; a first coil disposed on the bobbin; and a substrate including a second coil facing the magnet. The housing includes a first and a second side part facing each other and a third and a fourth side part facing each other. The magnet includes a first magnet unit disposed at the first side part, a second magnet unit disposed at the third side part, and a third magnet unit disposed at the fourth side part. The dummy member is disposed at the second side part.

Abstract: A sensor driving device includes a first substrate; a second substrate disposed on the first substrate; and an image sensor. The second substrate includes a body having first and second lateral surfaces; a first protrusion part protruding from the first lateral surface; and a second protrusion part protruding from the second lateral surface. The first protrusion part includes a first extension part, and a second extension part extending in a direction different from the first extension part. The second protrusion part includes a first extension part, and a second extension part extending in a direction different from the first extension part. The first extension parts are disposed parallel to an optical axis of the image sensor. The second extension part of the first protrusion part is closer to the second extension part of the second protrusion part than to the first extension part of the second protrusion part.