摘要:
A method and apparatus perform channel scanning in a wireless communication system. A signal intensity of an Access Point (AP) is compared with a scanning threshold, when the AP signal intensity not less than the scanning threshold, a channel scanning schedule list is generated in consideration of a scan time based on a passive channel scan scheme and a scan time based on an active channel scan scheme. The channel scanning is performed every channel scanning time, according to the channel scanning schedule list.
摘要:
An operation method of a display driver includes generating a count value by counting a period of a synchronization signal related to a synchronization packet received from a host, receiving a mode change command from the host, the mode change command indicating a change from a video mode transmitting first image data to a display by bypassing a frame memory to a command mode transmitting second image data to the display through the frame memory, and generating an internal synchronization signal having a period substantially equal to the period of the synchronization signal by using the count value based on the mode change command after a last pulse of the synchronization signal is generated. A time interval between the last pulse and a first pulse of the internal synchronization signal is equal to the period of the synchronization signal.
摘要:
Disclosed is a device and a method for processing an emergency call in a portable terminal regardless of a SIM card activated by a user's selection. The device includes a plurality of SIM cards, and a controller to make a control so that a SIM card capable of performing a communication service is automatically switched and the emergency call is transmitted when an emergency call transmission is generated.
摘要:
A substrate cutting apparatus including: a stage to support a substrate; a laser generator to emit a laser beam; a beam oscillator to oscillate the laser beam onto a cutting line of the substrate, to heat the substrate; and a cooling unit to cool the heated substrate.
摘要:
A reference wafer maintains laser accuracy and calibrates a camera and a laser of a semiconductor equipment. The reference wafer includes a first anti-reflection layer, an adhesive layer, a light absorption layer and a second anti-reflection layer that are stacked over a substrate, a light reflection layer formed over the second anti-reflection layer, and a protection layer formed over the light reflection layer.
摘要:
A light emission device includes a vacuum vessel having a first substrate and a second substrate. The first substrate has a first substrate surface and the second substrate has a second substrate first surface and a second substrate second surface opposing the second substrate first surface. The first substrate surface is separated from the second substrate first surface. An electron emission unit is provided on the first substrate surface. A light emission unit is provided on the second substrate first surface for emitting light in response to receiving electrons emitted from the electron emission unit. A plurality of heat dissipation barrier ribs is provided on the second substrate second surface, the barrier ribs being spaced from each other.