Abstract: A dimming controller is capable of receiving a dimming signal to dim light-emitting device no matter the dimming signal is of a first type or of a second type. A type identifier identifies whether the dimming signal received from an input node is of the first type or of the second type, to accordingly generate a selection signal. A signal converter generates a first signal in response to the dimming signal, and the first signal is of the first type. A multiplexer has two inputs receiving the first signal and the dimming signal respectively, and, in response to the selection signal, forwards one of the first signal and the dimming signal to a driver driving the light-emitting device.

Abstract: A dimming controller is capable of receiving a dimming signal to dim light-emitting device no matter the dimming signal is of a first type or of a second type. A type identifier identifies whether the dimming signal received from an input node is of the first type or of the second type, to accordingly generate a selection signal. A signal converter generates a first signal in response to the dimming signal, and the first signal is of the first type. A multiplexer has two inputs receiving the first signal and the dimming signal respectively, and, in response to the selection signal, forwards one of the first signal and the dimming signal to a driver driving the light-emitting device.

Abstract: An antenna structure includes a first radiation arm, a second radiation arm, a feed end, and a ground end. The second radiation arm is perpendicularly connected to the first radiation arm. The first radiation arm and the second radiation arm jointly form a junction, both the feed end and the ground end are positioned adjacent to the junction.

Abstract: A system for displaying images captured with a wide view lens in a split view without distortion. The system captures raw image data using the wide view lens and renders it to projection plane corresponding to a curved display surface, and then maps the image data from the projection plane to a rectilinear display screen, thereby eliminating all distortion in the displayed image regardless of the angle of view of the lens.

Abstract: A PWM controller in a switching mode power supply provides to a power switch a PWM signal determining an ON time and an OFF time. A peak detector detects a voltage peak of a line voltage generated by rectifying an alternating-current input voltage. An OFF-time control unit controls the PWM signal and determines the OFF time in response to a compensation voltage, which is in response to an output voltage of the switching mode power supply. An ON-time control unit controls the PWM signal and determines the ON time in response to the compensation voltage and the voltage peak. The ON-time control unit is configured to make the ON time not less than a minimum ON time, and the minimum ON time is determined in response to the voltage peak.

Abstract: A non-halogen flame retardant adhesive composition and tape comprises the same are disclosed. The non-halogen flame retardant adhesive composition comprises an adhesive and a flame retardant composition. The flame retardant composition comprises a phosphoric acid ester compound and a flame retardant material selected from one or more elements of a group consisting of melamine cyanurate, melamine pyrophosphate and phosphinate salt. The ratio of the adhesive and the flame retardant composition is in a range from 1:0.7 to 1:1.2, and the non-halogen flame retardant adhesive composition has 180 degree peeling strength above 1.0 kg/in based on ASTM-D3330 and achieves a UL 94 VTM flame resistance capability.

Abstract: A PWM controller in a switching mode power supply provides to a power switch a PWM signal determining an ON time and an OFF time. A peak detector detects a voltage peak of a line voltage generated by rectifying an alternating-current input voltage. An OFF-time control unit controls the PWM signal and determines the OFF time in response to a compensation voltage, which is in response to an output voltage of the switching mode power supply. An ON-time control unit controls the PWM signal and determines the ON time in response to the compensation voltage and the voltage peak. The ON-time control unit is configured to make the ON time not less than a minimum ON time, and the minimum ON time is determined in response to the voltage peak.

Abstract: A wireless communication device includes a circuit board, a metal frame, and a slot antenna. The circuit board includes a multiple bandpass filter, a plurality of matching circuits, and a plurality of Radio Frequency (RF) modules. The metal frame surrounds the circuit board. The slot antenna includes a feeding portion, at least one grounding portion, and a radiating portion. The feeding portion and the at least one grounding portion are connected between the circuit board and the metal frame, the radiating portion and the circuit board enclose a slot. The radiating portion is formed on a portion of the metal frame. The slot antenna, the multiple bandpass filter, the plurality of matching circuits, and the plurality of RF modules are electrically connected in that order.

Abstract: A wireless communication device includes a substrate and a tunable antenna. The substrate has a signal source. The tunable antenna includes a metal cover and at least one matching circuit. The metal cover serves as a cover of the wireless communication device, and includes a radiation body, a main body, and a dielectric member coupled between the radiation body and the main body. The radiation body is coupled to the signal source and dielectric relative to the main body. The at least one matching circuit is configured to switch between multiple working mode to enable the radiation body to receive and send wireless signals at different frequency bands.

Abstract: A wireless communication device includes a housing and an antenna. The housing is made of metal and defines a conductive chamber. The chamber includes a bottom wall, two opposite first side walls, and two opposite second side walls connecting to the first side walls, the first side walls and the second side walls surrounding around the bottom wall. The antenna comprises a radiating body, a feed end, and a ground end. The radiating body is suspended above the chamber and distanced from the conductive chamber in such a way that the antenna functions in a resonance mode with the conductive chamber, in operating at the required frequencies. The feed end and ground end extend from the radiating body and are connected to one of the second side walls.

Abstract: An antenna structure includes a feed end, a ground end, a number of antenna units, and a number of connection sections corresponding to the antenna units. The antenna units are positioned side by side. Each connection section is positioned between two adjacent antenna units and interconnects the two adjacent antenna units to form a zigzag-shaped antenna structure. The feed end and the ground end are perpendicularly connected to two antenna units positioned at two ends of the interconnected antenna units.

Abstract: A wireless communication device includes a circuit board, a metal frame, and a slot antenna. The circuit board includes a multiple bandpass filter, a plurality of matching circuits, and a plurality of Radio Frequency (RF) modules. The metal frame surrounds the circuit board. The slot antenna includes a feeding portion, at least one grounding portion, and a radiating portion. The feeding portion and the at least one grounding portion are connected between the circuit board and the metal frame, the radiating portion and the circuit board enclose a slot. The radiating portion is formed on a portion of the metal frame. The slot antenna, the multiple bandpass filter, the plurality of matching circuits, and the plurality of RF modules are electrically connected in that order.

Abstract: An antenna structure for MIMO application includes a substrate, a first antenna element, and a second antenna element. A metal ground layer covers a portion of a first surface of the substrate, and the first antenna element is arranged on the metal ground layer. The first antenna element includes an open-slot, which extending from an edge of the metal ground layer toward an inner portion of the metal ground layer, and a signal feed-in member arranged on a second surface of the substrate and spatially corresponding to an open end of the open-slot. The second antenna element is arranged on the first surface of the substrate adjacent to the first antenna element and extending away from the metal ground layer, and includes a signal feed-in portion arranged adjacent to the open end of the open-slot, and electronically connects to the signal feed-in member.

Abstract: A broadband antenna for wireless communication device is disclosed. The broadband antenna includes a main radiator, a grounding unit, a feeding unit, and a resonating unit. The main radiator includes a main radiating portion, a first radiating arm extending from the main radiating portion, and a second radiating arm extending from the main radiating arm, the first radiating arm forms a first current path to generate a first high frequency mode; the second radiating arm forms a second current path to generate a second high frequency mode. The resonating unit is connected to the grounding unit, the resonating unit surrounds and is positioned separate from the second radiating arm, the resonating unit resonates with the main radiator to generate two different low frequency bands corresponding to two coupling currents.

Abstract: An antenna structure includes a first radiation arm, a second radiation arm, a feed end, and a ground end. The second radiation arm is perpendicularly connected to the first radiation arm. The first radiation arm and the second radiation arm jointly form a junction, both the feed end and the ground end are positioned adjacent to the junction.

Abstract: A wireless communication device includes a substrate and a tunable antenna. The substrate has a signal source. The tunable antenna includes a metal cover and at least one matching circuit. The metal cover serves as a cover of the wireless communication device, and includes a radiation body, a main body, and a dielectric member coupled between the radiation body and the main body. The radiation body is coupled to the signal source and dielectric relative to the main body. The at least one matching circuit is configured to switch between multiple working mode to enable the radiation body to receive and send wireless signals at different frequency bands.

Abstract: An antenna structure includes a feed end, a ground end, a number of antenna units, and a number of connection sections corresponding to the antenna units. The antenna units are positioned side by side. Each connection section is positioned between two adjacent antenna units and interconnects the two adjacent antenna units to form a zigzag-shaped antenna structure. The feed end and the ground end are perpendicularly connected to two antenna units positioned at two ends of the interconnected antenna units.

Abstract: An antenna structure for MIMO application includes a substrate, a first antenna element, and a second antenna element. A metal ground layer covers a portion of a first surface of the substrate, and the first antenna element is arranged on the metal ground layer. The first antenna element includes an open-slot, which extending from an edge of the metal ground layer toward an inner portion of the metal ground layer, and a signal feed-in member arranged on a second surface of the substrate and spatially corresponding to an open end of the open-slot. The second antenna element is arranged on the first surface of the substrate adjacent to the first antenna element and extending away from the metal ground layer, and includes a signal feed-in portion arranged adjacent to the open end of the open-slot, and electronically connects to the signal feed-in member.

Abstract: A broadband antenna for wireless communication device is disclosed. The broadband antenna includes a main radiator, a grounding unit, a feeding unit, and a resonating unit. The main radiator includes a main radiating portion, a first radiating arm extending from the main radiating portion, and a second radiating arm extending from the main radiating arm, the first radiating arm forms a first current path to generate a first high frequency mode; the second radiating arm forms a second current path to generate a second high frequency mode. The resonating unit is connected to the grounding unit, the resonating unit surrounds and is positioned separate from the second radiating arm, the resonating unit resonates with the main radiator to generate two different low frequency bands corresponding to two coupling currents.

Abstract: A wireless communication device includes a housing and an antenna. The housing is made of metal and defines a conductive chamber. The chamber includes a bottom wall, two opposite first side walls, and two opposite second side walls connecting to the first side walls, the first side walls and the second side walls surrounding around the bottom wall. The antenna comprises a radiating body, a feed end, and a ground end. The radiating body is suspended above the chamber and distanced from the conductive chamber in such a way that the antenna functions in a resonance mode with the conductive chamber, in operating at the required frequencies. The feed end and ground end extend from the radiating body and are connected to one of the second side walls.