Abstract: Various embodiments of self-calibration systems and methods are described. One method embodiment, among others, includes imposing an alternate test to components within the device, responsive to the imposition of the alternate test, providing test responses corresponding to the components, and substantially, simultaneously mapping each of the test responses to corresponding specification values of the components.

Abstract: Various embodiments of self-calibration systems and methods are described. One method embodiment, among others, includes imposing an alternate test to components within the device, responsive to the imposition of the alternate test, providing test responses corresponding to the components, and substantially, simultaneously mapping each of the test responses to corresponding specification values of the components.

Abstract: An image forming apparatus is configured to reduce a velocity fluctuation of a rotating body by reducing the AC velocity component of the rotating body. The image forming apparatus may include an image bearing body with a surface on which a toner image is formed; a driving motor configured to drive the image bearing body according to an input signal; and a controller configured to control the driving motor to output a motor output velocity at a period equal to that of an AC velocity component of the image bearing body. A velocity control method for the rotating body includes sampling a continuous motor input signal at a period equal to that of an AC velocity component of a rotating velocity of the rotating body. The sampled signal is transmitted to a driving motor that drives the rotating body, which is driven based upon the discrete motor input signal.

Abstract: A portable device suitable for various multimedia environments includes: a main body; a folder; and a hinge unit mounted on the main body and rotatably connecting the folder to the main body. The hinge unit is slidable on the main body together with the folder. The mode-switching of the portable being provided according to the sliding position of the hinge unit.

Abstract: A method of matching game users for a game in an electronic device, the method including: displaying a user interface screen to receive, from a user, a selection of an option for starting the game; and creating a match by searching a network and/or a subnet for one or more game participants in response to receiving a selection of an option, via the user interface screen, to match a plurality of users to play the game. Accordingly, it is possible to more rapidly create a match between a plurality of game participants.

Abstract: The present invention describes a semiconductor device that generates internal voltages having different levels using an external voltage. The semiconductor device includes a plurality of asynchronous internal voltage generating circuits that share an external voltage source and generate internal voltages having different levels from one another. The plurality of asynchronous internal voltage generating circuits maintain the levels of the internal voltages at target levels by using the external voltage at different time points, respectively. The semiconductor device minimizes noise in the external voltage according to the use of the internal voltages.

Abstract: An apparatus and a method of automatically setting a sound mode of a broadcast receiver without a user setting, using a vertical blanking interval. The apparatus includes a vertical blanking interval signal decoder, a memory, a sound decoder, and a system control unit. The vertical blanking interval signal decoder decodes a signal included in the vertical blanking interval of a received broadcasting signal. The memory stores one or more sound band control signals with respect to a plurality of sound modes. The sound decoder controls a sound band of an audio signal included in the received broadcasting signal and outputs the audio signal whose sound band is controlled. The system control unit detects a sound band control signal from the memory based on sound mode data included in data output from the vertical blanking interval signal decoder and controls the sound decoder using the detected sound band control signal.

Abstract: In a method of wirelessly transmitting an audio and/or video input signal having a standard definition (SD), the input signal is converted to a signal having a high definition (HD) and noise is removed from the converted signal. High definition encoding is performed to the noise-free signal and the encoded signal is wirelessly transmitted. Accordingly, image deterioration can be reduced by eliminating the noise before encoding the input signal. In addition, the HD encoding is performed instead of the SD encoding to reduce image degradation.

Abstract: A communication apparatus that communicates with an external apparatus using an I2C bus, the communication apparatus having a microprocessor to process data received in response to an interrupt activation signal, a first reception unit to receive data transmitted from the external apparatus through the I2C bus and temporarily store the data until the data becomes a predetermined unit, and a second reception unit to generate the interrupt activation signal and to transmit the data of the predetermined unit to the microprocessor.

Abstract: An apparatus and method of signal reproduction with a DVI/HDMI compatible connector. The apparatus includes an HDMI audio detector that determines whether an HDMI audio signal is included in a signal input via the DVI/HDMI compatible connector, a switch that selects one of an HDMI audio signal input via the DVI/HDMI compatible connector and a DVI audio signal input via a separate DVI audio connector, according to the result detected by the audio detector, and an audio decoder that decodes the audio signal selected by the switch.

Abstract: An apparatus and a method of automatically setting a sound mode of a broadcast receiver without a user setting, using a vertical blanking interval. The apparatus includes a vertical blanking interval signal decoder, a memory, a sound decoder, and a system control unit. The vertical blanking interval signal decoder decodes a signal included in the vertical blanking interval of a received broadcasting signal. The memory stores one or more sound band control signals with respect to a plurality of sound modes. The sound decoder controls a sound band of an audio signal included in the received broadcasting signal and outputs the audio signal whose sound band is controlled. The system control unit detects a sound band control signal from the memory based on sound mode data included in data output from the vertical blanking interval signal decoder and controls the sound decoder using the detected sound band control signal.