Abstract: Disclosed is an album list management system and method in mobile device which automatically classify files input to the terminal into a music file and a video file to effectively manage the files and perform index and reproduction of the files easily are provided. More specifically, files are inputted from an outside source, the input files are classified according to types of the files and stored in a memory, an album list is generated to be displayed for each classified file, and the generated album list is displayed on a display unit.

Abstract: Content control method and system for optimizing information on a display screen of a mobile device which preferentially arranges a primarily optimized layout among content to be displayed on a screen and outputs detailed content in a corresponding area on the screen in phases when there is a touch input (for expanding a specific area of the screen by a user. In particular, when a touch input of a first pattern input through a touch screen is recognized, content related to the touched area is expanded by a predetermined ratio and the expanded content is displayed on a screen. Simultaneously, detailed information of the content selected by the touch input of the first pattern is read from the memory and the read detailed information is output on the touch screen.

Abstract: A demodulator for demodulating a digital broadcast signal and a demodulation method thereof. A QPSK demodulator of a digital broadcast reception system includes an in-phase/quadrature (I/Q) detector. The I/Q detector generates a baseband I signal and a baseband Q signal by multiplying a modulated QPSK signal by an I/Q carrier signal. A bandwidth adjustable first filter receives the baseband I signal and the baseband Q signal generated by the I/Q detector and rejects imaginary noise included in the received signals. A data restoration unit restores original data before the signals output from the first filter are QPSK modulated.

Abstract: The present invention relates to an integrated key using an optical key, in particular, to an integrated key which enables a more subdivided manipulation for the movement to the outside based on a center point, and to perform the operation of rotation and push. An integrated key using an optical sensor of the invention includes a housing which has an accommodation space inside while an upper portion is open; an operation member which has a guide unit which sticks to the housing between an upper end and a lower end of the operation member while a handle is formed in an upper side and a reflection unit is formed at a bottom surface; and an optical sensor which measures one or more of a separation distance with the reflection a rotation of the operation member, and a location coordinate value of the operation member, and outputs a sensing signal according to the measurement.

Abstract: A method for demodulating a carrier wave in a channel environment in which a pilot signal may be distorted, in a digital TV receiver, which may receive a vestigial sideband (VSB) modulated and transmitted signal, and a demodulation apparatus therefor are provided. A field synchronization part of a VSB signal, in which a pilot signal may be removed, may be used as a reference signal for synchronization. The frequency offset of a carrier wave may be estimated through self-correlation of a signal, and the phase offset of the carrier wave may be estimated through a pilot-less frequency and phase locked loop (FPLL).

Abstract: An apparatus may include a sort circuit for receiving first and second baseband signals, where the sort circuit shifting frequencies of the first and second baseband signals. The apparatus may also include a removal circuit for receiving the shifted first and second baseband signals and for combining the shifted first and second baseband signals to provide a frequency-modulated signal, and a symbol timing restoration circuit for measuring a timing error in related symbols of the frequency-modulated signal, for generating an address selection signal that is proportional to the timing error, in response to a carrier restoration signal, and for indicating restoration of the carrier.

Abstract: A method for processing at least one complex signal may include equalizing compensating for a phase error of an input complex signal. The input complex signal may include a first channel signal and a second channel signal, which is perpendicular to the first channel signal. A phase imbalance and an amplitude imbalance between a first channel signal and a second channel signal may be compensated to generate an imbalance compensated signal.

Abstract: Exemplary embodiments of the present invention provide a frequency phase locked loop circuit, which may enable a frequency and/or phase of a sampled signal to be tracked within a short time. Exemplary embodiments of the present invention also provide a digital television demodulator, which may use the frequency phase locked loop circuit. Exemplary embodiments of the frequency phase locked loop circuit may include a mean power frequency discriminator, a mean calculator, a phase discriminator, a loop-filter, and an adder. The frequency phase locked loop circuit may obtain a carrier frequency through a path and may track a phase of the carrier frequency through another path.

Abstract: A method for demodulating a carrier wave in a channel environment in which a pilot signal may be distorted, in a digital TV receiver, which may receive a vestigial sideband (VSB) modulated and transmitted signal, and a demodulation apparatus therefor are provided. A field synchronization part of a VSB signal, in which a pilot signal may be removed, may be used as a reference signal for synchronization. The frequency offset of a carrier wave may be estimated through self-correlation of a signal, and the phase offset of the carrier wave may be estimated through a pilot-less frequency and phase locked loop (FPLL).

Abstract: An apparatus may include a sort circuit for receiving first and second baseband signals, where the sort circuit shifting frequencies of the first and second baseband signals. The apparatus may also include a removal circuit for receiving the shifted first and second baseband signals and for combining the shifted first and second baseband signals to provide a frequency-modulated signal, and a symbol timing restoration circuit for measuring a timing error in related symbols of the frequency-modulated signal, for generating an address selection signal that is proportional to the timing error, in response to a carrier restoration signal, and for indicating restoration of the carrier.

Abstract: A multi-sprinkler controller includes a timer-activated motor which drives a rotor disc. The rotor disc operates the opening and closing of several water passages through which water is supplied to the various sprinklers which make up a sprinkler system.