Patent application number | Description | Published |
20090141833 | MULTI-CHANNEL TUNING RECEIVER AND MULTI-CHANNEL TUNING METHOD THEREOF - Provided are a multi-channel tuning receiver, including: a broadband radio frequency (RF) tuner to receive a broadband signal, divide the broadband signal into a plurality of signals, tune the divided signals, combine the tuned signals into a single signal, and output the combined single signal; an analog-to-digital (A/D) converter to convert the combined single signal to digital signal; a channelizer to extract only a bonded channel from the digital signal; and a plurality of demodulators to demodulate the bonded channel, and a multi-channel tuning method thereof. | 06-04-2009 |
20100158086 | CABLE MODEM AND METHOD OF PERFORMING CHANNEL BONDING USING DIGITAL UPCONVERTER - A cable modem is provided. The cable modem may include: a plurality of modulators to generate a plurality of pieces of digital data corresponding to a plurality of independent channels; a plurality of digital upconverters to up-convert a frequency of each of the plurality of pieces of digital data into a predetermined frequency; and a Radio Frequency (RF) processor to channel-bond outputs of the plurality of digital upconverters into at least one channel, and generate an analog output signal, the outputs having the predetermined frequency. | 06-24-2010 |
20130129021 | AUTOMATIC GAIN CONTROLLING DEVICE, ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) RECEIVER EMPLOYING HIGH-ORDER QUADRATURE AMPLITUDE MODULATION (QAM) AND USING AUTOMATIC GAIN CONTROLLING DEVICE, AND MANUFACTURING METHOD OF AUTOMATIC GAIN CONTROLLING DEVICE - Provided is an automatic gain controlling device that may prevent deterioration in performance of an orthogonal frequency division multiplexing (OFDM) receiver, on a cable network that performs communication by an orthogonal frequency division multiplexing (OFDM) scheme using high-order quadrature amplitude modulation (QAM), the automatic gain controlling device including a power computing unit to compute a power of a signal received by the OFDM receiver, and a gain controller to control a gain of the received signal based on the computed power of the received signal. | 05-23-2013 |
20130283331 | METHOD AND APPARATUS FOR INSERTING BROADCAST PROGRAM BY DETECTING AVAILABLE CHANNEL OVER HYBRID FIBER COAX NETWORK OR OPTICAL CABLE NETWORK - An apparatus for combining a broadcasting channel may include a channel detector to detect a vacant Radio Frequency (RF) broadcasting channel used by a photoelectric converter that converts a first broadcast program as an optical signal to a first RF signal, a broadcast receiving interface to receive at least one second broadcast program, a broadcast modulator to generate a second RF signal by modulating the second broadcast program using the vacant RF broadcasting channel, and a channel combiner to combine a broadcasting channel used for the first RF signal and the vacant RF broadcasting channel. | 10-24-2013 |
20140286468 | METHOD AND APPARATUS FOR COMPENSATING FOR VARIABLE SYMBOL TIMING USING CYCLIC PREFIX IN NON-SYNCHRONIZED OFDM SYSTEM - Disclosed are a method and apparatus for estimating symbol timing in a non-synchronized OFDM system. The present invention includes synchronizing a frame of a received signal, estimating the symbol timing of each symbol of the frame based on the synchronization, compensating for the symbol timing using a phase difference attributable to a Symbol Timing Offset (STO), variably changing within a Cyclic Prefix (CP) interval due to the frequency offset of a sampling clock and thermal noise, and performing channel equalization using a preamble based on output including corrected phase rotation. | 09-25-2014 |
20140354777 | APPARATUS AND METHOD FOR OBTAINING SPATIAL INFORMATION USING ACTIVE ARRAY LENS - Disclosed herein are an apparatus and method for obtaining spatial information using an active array lens. In order to obtain spatial information in the apparatus for obtaining spatial information including the active microlens, at least one active pattern for varying a microlens' focus is determined by controlling voltage applied to a pattern of the active microlens, and at least one projection image captured by the at least one active pattern is obtained in a time-division unit. | 12-04-2014 |
20150033251 | NETWORK PROTOCOL FOR CONTENTS PROTECTION IN DIGITAL CABLE BROADCASTING SERVICE AND CONDITIONAL ACCESS SYSTEM USING THE PROTOCOL - Disclosed are a network protocol for contents protection in a digital cable broadcasting service and a conditional access system using the protocol. A method for renewing conditional access client software (CACS) by a conditional access module in a renewable conditional access system (RCAS) may include: receiving an RCAS announcement message from a headend; transmitting to the headend a key registration request message for requesting an authorization key when the RCAS announcement message is authenticated; receiving a key registration response message including the authorization key from the headend; and generating security factors based on the authorization key and renewing the CACS by using the security factors. | 01-29-2015 |
Patent application number | Description | Published |
20120157876 | HEARING TEST METHOD AND APPARATUS - A hearing test method and apparatus are provided for improving a measuring accuracy and a test speed in finding the auditory threshold that is the audibility limit of discriminating a sound. In the method, after outputting a test sound relevant to a selected test frequency and a selected test sound pressure, the apparatus determines whether a user hears the test sound, then the test sound pressure zone is divided into an auditory threshold presence region and an auditory threshold absence region according to the result of determination. Thereafter, the test sound pressure zone is redefined using the auditory threshold presence region and this process of hearing test is repeated using the redefined test sound pressure zone to finally determine an auditory threshold for the selected test frequency. | 06-21-2012 |
20120172022 | APPARATUS AND METHOD FOR PROVIDING ETIQUETTE CALL MODE IN MOBILE DEVICE - An apparatus and method are provided to output a received call with a volume adjusted to a reference level range in the etiquette call mode. In the method for providing the etiquette call mode of a mobile device, the apparatus determines whether the etiquette call mode is activated in a call mode. When the etiquette call mode is activated, the apparatus establishes a transmission gain to a given gain value and also establishes a reception gain to a specific gain value corresponding to a minimum receiving volume level. Then the apparatus amplifies a received call by means of the established reception gain, adjusts a volume of the amplified received call to a given reference level range, and outputs the adjusted received call through a speaker. | 07-05-2012 |
20140079227 | METHOD FOR ADJUSTING VOLUME AND ELECTRONIC DEVICE THEREOF - An apparatus and method for selectively provide an automatic volume adjustment service considering an audio output signal in an electronic device. A method for adjusting a volume includes identifying a second signal which is output through a speaker while a first signal is input through a microphone, and determining whether a volume of an audio signal to be output through the speaker is increased, based on a correlation between the first signal and the second signal. | 03-20-2014 |
20140179379 | MODE CHANGE APPARATUS AND METHOD IN ELECTRONIC DEVICE - A mode change apparatus and method using face recognition in an electronic device are provided. The method of changing a notifying mode includes, determining whether a face is recognized from surroundings of the electronic device when a call is received; and generating a call reception event in a first notification mode when the face is recognized from the peripheral images. | 06-26-2014 |
20140210706 | ELECTRONIC DEVICE EMPLOYING A FLEXIBLE DISPLAY AND OPERATING METHOD THEREOF - An electronic device to which a flexible display is applied and an operating method thereof. The content display method for viewing simple content such as a current time, a date, or the number of received massages without unfolding the folded flexible display, when a flexible display is folded for carrying. | 07-31-2014 |