Abstract: An electronic device is provided, which includes a first case frame, a second case frame, a hinge portion, and a processor. The first case frame includes a keypad. The second case frame is installed to be rotatable from the first case frame, and includes a touchscreen. The hinge portion couples the first case frame with the second case frame, and is rotatably installed to rotate the second case frame. The processor controls to determine an operation mode of the electronic device depending on rotation of the hinge portion.

Abstract: An electronic device is provided, which includes a first case frame, a second case frame, a hinge portion, and a processor. The first case frame includes a keypad. The second case frame is installed to be rotatable from the first case frame, and includes a touchscreen. The hinge portion couples the first case frame with the second case frame, and is rotatably installed to rotate the second case frame. The processor controls to determine an operation mode of the electronic device depending on rotation of the hinge portion.

Abstract: An apparatus and method for controlling vibration in a mobile terminal are provided. The method includes, upon detecting a key input by a user, determining whether a current feedback signal is detected when an external case with a first vibrator is connected to the mobile terminal, upon detecting the current feedback signal, determining that the external case is connected to the mobile terminal and applying a drive signal to the first vibrator, and controlling the first vibrator to be activated in response to the received drive signal to output a haptic feedback.

Abstract: A keypad is provided. The keypad includes an optical waveguide on the top surface of which at least one prism pattern is formed, a light source for generating light and causing the light to be incident to a side surface of the optical waveguide, and at least one optical detector located below the optical waveguide to correspond to the at least one prism pattern.

Abstract: An apparatus and method for controlling vibration in a mobile terminal are provided. The method includes, upon detecting a key input by a user, determining whether a current feedback signal is detected when an external case with a first vibrator is connected to the mobile terminal, upon detecting the current feedback signal, determining that the external case is connected to the mobile terminal and applying a drive signal to the first vibrator, and controlling the first vibrator to be activated in response to the received drive signal to output a haptic feedback.

Abstract: An optically pumped semiconductor laser and an optical pumping method are disclosed. The optically pumped semiconductor laser includes an output mirror and a reflective mirror for forming a resonant region therebetween, a gain medium disposed between the output mirror and the reflective mirror and a light source for applying a source light in a direction between the output mirror and the gain medium to activate the gain medium, whereby the optical axes of the light from the source light and the light generated from the gain medium are substantially perpendicular to each other and the optical axes of a second harmonic generated from a nonlinear crystal is substantially equal to the optical axis of the light generated from the gain medium.

Abstract: A keypad is provided. The keypad includes an optical waveguide on the top surface of which at least one prism pattern is formed, a light source for generating light and causing the light to be incident to a side surface of the optical waveguide, and at least one optical detector located below the optical waveguide to correspond to the at least one prism pattern.

Abstract: Disclosed is a method of reducing speckles appearing in a laser beam. The method includes the steps of splitting the laser beam into two polarized light modes perpendicular to each other; modifying the phase of at least one of the two polarized light modes, and combining the two polarized light modes into a single laser beam outputted. The method is performed by using an apparatus that includes a light source to generate a laser beam, a polarization split filter to split the laser beam into two polarized light modes perpendicular to each other and then re-combine said two polarized light modes, and a multi-angle reflection mirror to reflect one of the two polarized light modes to the polarization split filter, wherein the polarization split filter is inserted in the multi-angle reflection mirror.

Abstract: A light source for wavelength conversion which can control gray scale includes a semiconductor laser including at least two radiators, to which different gray scale levels are allocated. Further included is a second-harmonic generator for performing wavelength conversion on lights radiated from the radiators, and outputting the wave-converted lights.

Abstract: The width of a current pass region of a semiconductor laser device is narrowed as much as possible, thus implementing a stable single transverse mode. The device is relatively resistant against physical impact. The device includes a semiconductor substrate having first and second opposite surfaces, and, in order, a first conductive type clad, active layer, etch stop layer, current blocking layer formed in a V-groove shape so that a part of the etch stop layer is exposed, second conductive type clad formed entirely over the entire of the V-groove and the current blocking layer, optical guide layer, current pass facilitation layer, cap layer, second conductive type electrode, and a first conductive type electrode formed on the second surface of the semiconductor substrate.

Abstract: An optically pumped semiconductor laser and an optical pumping method are disclosed. The optically pumped semiconductor laser includes first and second reflective bodies forming a resonant region therebetween, a gain medium disposed between the first and second reflective bodies; and a light source for applying a source light to the resonant region in a lateral direction with regard to the gain medium for generating a basic wavelength. The laser further comprising an output mirror and a nonlinear crystal disposed between the output mirror and the second reflective body to generate a predetermined wavelength as a second harmonic of the basic wavelength.

Abstract: An optically pumped semiconductor laser and an optical pumping method are disclosed. The optically pumped semiconductor laser includes an output mirror and a reflective mirror for forming a resonant region therebetween, a gain medium disposed between the output mirror and the reflective mirror and a light source for applying a source light in a direction between the output mirror and the gain medium to activate the gain medium, whereby the optical axes of the light from the source light and the light generated from the gain medium are substantially perpendicular to each other and the optical axes of a second harmonic generated from a nonlinear crystal is substantially equal to the optical axis of the light generated from the gain medium.

Abstract: A method for manufacturing a semiconductor laser is provided. The method includes the steps of sequentially growing a lower clad, a lower waveguide and a multi-quantum well on a semiconductor substrate; forming, on the multi-quantum well, masks each possessing a first area which has a constant width and a second area which extends from the first area and has a gradually decreasing width, such that the masks are symmetrical to each other; sequentially growing an upper waveguide and an upper clad on the multi-quantum well through selective area growth; implementing a mesa-etching process from the upper clad to the lower clad; and growing, on the semiconductor substrate, a current blocking layer to have the same height as the upper clad.

Abstract: The width of a current pass region of a semiconductor laser device is narrowed as much as possible, thus implementing a stable single transverse mode. The device is relatively resistant against physical impact. The device includes a semiconductor substrate having first and second opposite surfaces, and, in order, a first conductive type clad, active layer, etch stop layer, current blocking layer formed in a V-groove shape so that a part of the etch stop layer is exposed, second conductive type clad formed entirely over the entire of the V-groove and the current blocking layer, optical guide layer, current pass facilitation layer, cap layer, second conductive type electrode, and a first conductive type electrode formed on the second surface of the semiconductor substrate.