摘要:
A wireless power receiver (210) that receives wireless power from a wireless power transmitter and a control method thereof are provided, wherein the wireless power receiver receives (S501) the wireless power from the wireless power transmitter; rectifies (220) the wireless power (S503); determines (S505) whether a ripple of a voltage value of the wireless power is greater than or equal to a preset threshold; and if the ripple of the voltage value of the wireless power is greater than or equal to the preset threshold, changes (S507)at least one element value of the wireless power receiver to suppress the ripple below the preset threshold.
摘要:
A method for fabricating a printed circuit board is provided. The method includes manufacturing a base film including a first side and a second side opposite to the first side; printing a first wiring on the first side with a high-viscosity conductive material having a viscosity of 5,000 to 300,000 centipoise (CPS); forming a via-hole that passes through both sides of the base film, and passes by the first wiring; and printing a second wiring on the second side with a low-viscosity conductive material having a viscosity of 100 to 5,000 CPS. The low-viscosity conductive material is applied to an inner wall of the via-hole to conductively connect the first wiring to the second wiring.
摘要:
A wireless charging apparatus provided in an electronic device is provided. The wireless charging apparatus includes a charging resonance unit for wireless charging; a driving circuit unit to which the charging resonance unit is connected and to which an internal circuitry is mounted; a shield member mounted to a rear surface of the charging resonance unit; and a heat dispersion member mounted to the driving circuit unit and the shield member to disperse heat generated by the driving circuit unit.
摘要:
A Printed Circuit Board (PCB) and a method for manufacturing the same are provided. A circuit pattern is formed by printing conductive ink/paste on a substrate, and sintering a layer of the conductive ink or curing a layer of the conductive paste by applying heat. A primary plating layer is formed through electroless plating or electrolytic plating of a high-melting point metal on the circuit pattern. A secondary plating layer is formed through electroless plating or electrolytic plating of a precious metal on the primary plating layer to improve wetting with solder.
摘要:
Provided are a method of generating parity data based on a low-density parity check matrix and an apparatus therefore. The method of generating parity data based on a parity check matrix H having p codewords of length c, each codeword being divided in a message word of length m and parity data of length p, includes (a) reordering columns of the parity check matrix H based on elements in each column having values of 1 to generate a reordered parity check matrix H'; (b) determining a cross-point I between a diagonal line L2 of a parity matrix part Mp in the parity check matrix H' and a reordered diagonal line L1 defined by first entry of 1 in each column of the reordered parity check matrix H', and, on the basis of positions of 1's in rows above a horizontal line L3 that passes through the cross-point I to perform column permutations on the reordered parity check matrix H', generating a triangular matrix T; (c) using the triangular matrix T and the message words to obtain the parity data; and (d) using the equation Hx=0, where x is a codeword matrix, to obtain the rest of parity data which is not obtained in step (c).
摘要:
An internal antenna is provided that includes a first antenna having a first antenna pattern formed on a first dielectric layer, and a second antenna having a second antenna pattern formed on a second dielectric layer. The second dielectric layer has a higher dielectric constant than the first dielectric layer. The first and second antenna patterns are electrically connected to each other.
摘要:
A foldable, portable wireless terminal is provided, which comprises: a main body; a sub-body capable of folding and unfolding with respect to the main body; and an opening/closing device for automatically or manually opening or closing the sub-body with respect to the main body by user selection. The opening/closing device includes a hinge cam with an end fixed to the main body or the sub-body, a deceleration module adapted to move axially and including an integrally formed hinge shaft, the hinge shaft adapted for selectively rotating the hinge cam in an automatic mode through rotation of a driving motor, an elastic member for biasing the deceleration module axially, and a hollow hinge arm for enclosing the hinge cam, the deceleration module, and the elastic member in series, the hinge arm being mounted to the main body or the sub-body to act as a hinge module.