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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8182582 | Gas storage medium, gas storage apparatus and method thereof Provided are gas storage medium, a gas storage apparatus having the same and a method thereof. The gas storage medium includes a plurality of material layers each having a variable valence, wherein each of the material layers includes redundant electrons that are no... | 05/22/2012 |
| 8180005 | Apparatus and method for selecting optimal signal using auxiliary equalization in diversity receiver Provided are an apparatus and method for selecting an optimal signal using auxiliary equalization in a diversity receiver. The optimal signal selecting apparatus includes: a plurality of sync recovery units for extracting sync information from baseband signals, whic... | 05/15/2012 |
| 8170470 | On-channel repeater and on-channel repeating method Provided are an on-channel repeater for repeating an output signal the same as an input signal on channel by removing feedback signals caused by low isolation of a transmission/reception antenna by converting a transmitted Radio Frequency (RF) signal into a signal o... | 05/01/2012 |
| 8170246 | Apparatus and method for reproducing surround wave field using wave field synthesis Provided are an apparatus and a method for reproducing a surround wave field using wave field synthesis. The apparatus includes an audio signal analyzer for analyzing a received multi-channel audio signal to check the number of audio signal channels, and extracting ... | 05/01/2012 |
| 8170089 | Apparatus for equalizing channel in frequency domain and method therefor Provided is an apparatus for channel equalization in frequency domain, including: a channel estimation unit for estimating a channel on received signal from outside, a channel matched filter for changing channel characteristic of the channel estimated by the channel... | 05/01/2012 |
| 8159412 | Isolation antenna for repeater Provided is an isolation antenna for a repeater which can acquire high isolation by using loop and dipole antennas, which are positioned in opposite directions to each other based on a shielding means, in a unidirectional repeater generally used in broadcasting or w... | 04/17/2012 |
| 8155031 | Wireless audio transceiver system and method using UWB wireless communication There is provided a transceiving method of an audio signal using an UWB wireless communication scheme, including the steps of: extracting and analyzing the beacon frames to generate reserved transmission interval information previously reserved by the other UWB tran... | 04/10/2012 |
| 8150899 | Method for finding minimal signed digit with variable multi-bit coding based on booth's algorithm Provided is a method for finding a minimal signed digit with variable multi-bit coding. The method includes the steps of: scanning and grouping given multi-bit and checking the type of each group; deciding whether each group is to be performed by any one of a coding... | 04/03/2012 |
| 8140020 | Radio frequency calibration apparatus and method for multi-antenna mobile communication system There is provided to an RF calibration apparatus and method for a multi-antenna mobile communication system, which calibrates a phase error and gain error of an RF path by calculating the minimum value of a sum of an initialized reference signal and a comparison sig... | 03/20/2012 |
| 8139691 | Apparatus and method for selecting correlation scheme based on carrier frequency error Provided is a correlation scheme selecting apparatus and method that can acquire initial synchronization efficiently by calculating frequency error criterion threshold between correlation schemes and selecting a correlation scheme for each region when a correlation ... | 03/20/2012 |
| 8139661 | Signal transmitting and receiving apparatuses The present invention relates to signal transmitting/receiving apparatuses. The signal transmitting apparatus includes an inverse discrete Fourier transform module, a cyclic prefix adding module, a preamble adding module, and a digital-analog converting module. The ... | 03/20/2012 |
| 8139498 | Method and apparatus for determining reporting period of channel quality information in multi-carrier wireless system Provided are a method and an apparatus for determining a reporting period of channel quality indicator. The method includes the steps of: a) estimating a channel gain through a channel received from a base station; b) calculating a weight by using a variable for det... | 03/20/2012 |
| 8135087 | Apparatus and method for signal detection using log likelihood ratio A method for signal detection using a log likelihood ratio in a multi-input multi-output communication system includes reconfiguring the signals received through the reception antennas on the basis of channel characteristics and acquiring candidate groups for each t... | 03/13/2012 |
| 8131287 | Apparatus and method for diagnosing fault and managing data in satellite ground system Provided are an apparatus and a method for diagnosing fault and processing data of a satellite ground system. The apparatus and a method can prevent data loss of a satellite, and efficiently operate the satellite ground system using data buffer and penalty method wh... | 03/06/2012 |
| 8130869 | Apparatus for transmitting and receiving data to provide high-speed data communication and method thereof In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a ... | 03/06/2012 |
| 8116406 | Apparatus and method for generating soft bit metric and M-ary QAM receiving system using the same Provided are an apparatus and method for generating a soft bit metric and a multi-level (M-ary) Quadrature Amplitude Modulation (QAM) receiving system using the same. The apparatus includes an analog to digital converter for converting an analog symbol signal of a d... | 02/14/2012 |
| 8116243 | Wireless sensor network and adaptive method for monitoring the security thereof The present invention relates to a sensor network having node architecture for performing trust management of neighboring sensor nodes, and to an adaptive method for performing trust management of neighboring sensor nodes for monitoring security in the sensor networ... | 02/14/2012 |
| 8115603 | Method for identifying multiple moving tags with multiple readers Disclosed is a method for identifying a plurality of moving tags by using a plurality of Radio Frequency Identification (RFID) readers. The technology of the present invention efficiently identifies multiple moving tags to thereby improve the identification rate and... | 02/14/2012 |
| 8112040 | Method for measuring variable bandwidth wireless channel and transmitter and receiver therefor Provided are a method for measuring a variable bandwidth wireless channel, and a transmitter and a receiver therefore. The transmitter, includes: a pre-processing unit for performing variable over-sampling and band-limited filtering on an original sequence for measu... | 02/07/2012 |
| 8111153 | Apparatus and method for providing position information and gathering information using RFID Provided are an apparatus and a method for providing position information and gathering information using Radio Frequency Identification (RFID). The apparatus includes: a plurality of RFID tags, driven by a radio frequency transmitted from an RFID reader installed i... | 02/07/2012 |
| 8094958 | Apparatus and method for sharpening blurred enlarged image Provided is an apparatus for sharpening a blurred enlarged image, including a digital image output unit for outputting a digital image input through a digital image input unit. The apparatus includes a digital image processing unit for calculating a primary edge dir... | 01/10/2012 |
| 8081062 | Transmit/receive antenna system having offset feed points for high isolation Provided is an antenna system with high isolation. The high-isolation antenna has transmission ports of a transmission antenna and reception ports of a reception antenna highly isolated from each other by using quadrature hybrid couplers. The antenna system includes... | 12/20/2011 |
| 8077791 | Optimal TCM codec search method for dual stream systems, and encoder/decoder using the same Provided is a method for searching for an optimal coder suitable to a dual stream transmission method of a DTV transceiving apparatus, and an encoder and a decoder employing the optimal coder searching method. The optimal coder searching method includes the steps of... | 12/13/2011 |
| 8066445 | Apparatus for adjusting length of tension tie for cable network antenna An apparatus for adjusting the length of a tension tie mounted on a deployable antenna based on a cable network structure includes a cable retainer provided with a retaining hole, a cable being connected to the cable retainer; a retaining case coupled to the outer p... | 11/29/2011 |
| 8064820 | Method and system for service announcement using MBMS multicast bearer There is provided a method for a multimedia broadcast/multicast service (MBMS) announcement to provide a service announcement document in a broadcast multicast service center (BM-SC) of a MBMS system, including the steps of: generating a service announcement documen... | 11/22/2011 |
| 8055763 | System and method for processing sensing data from sensor network Provided are a system and method for processing sensing data from a sensor network. The system includes: a data processing condition managing unit for storing sensing data processing conditions; a data processing function managing unit for storing sensing data proce... | 11/08/2011 |
| 8050346 | Optimal encoder and encoding method for dual stream system Provided are a method of estimating an encoder for dual stream transmission, and an encoder using the same. The method includes the steps of: a) setting up the number of memories required for an encoder, a free distance condition for robust data, and a free distance... | 11/01/2011 |
| 8044868 | PCB type dual band patch antenna and wireless communication module incorporating the same PCB type dual band patch antennna The invention provides a PCB type dual band patch antenna and a wireless communication module incorporating the antenna. The antenna includes a substrate. A ground pattern is formed on the substrate. A radiating patch is formed on the substrate to be spaced apart fr... | 10/25/2011 |
| 8036289 | Apparatus and method for correcting iterative residual frequency and phase in turbo coded OFDM system Provided is an iterative residual frequency and phase compensation apparatus for an OFDM system and a method thereof. The apparatus includes: a first classifying unit for classifying symbol sequences by each subcarrier wave; a soft-decision calculating unit for calc... | 10/11/2011 |
| 8035572 | H-type monopole isolation antenna Provided is an H-type monopole isolation antenna. The antenna provides an H-type monopole isolation antenna which can gain a high bi-directional transmitting/receiving isolation between a transmitting antenna and a receiving antenna of co-channel/co-polarization by ... | 10/11/2011 |
| 8032780 | Virtualization based high availability cluster system and method for managing failure in virtualization based high availability cluster system Provided are a virtualization based high availability cluster system and a method for managing failures in a virtualization based high availability cluster system. The high availability cluster system includes a plurality of virtual nodes, and a plurality of physica... | 10/04/2011 |
| 8031667 | Method for managing multiple frequency assignment using terminal's received performance in OFDMA WRAN system There is a provided a method for managing a multiple frequency assignment using a terminals RX performance in an orthogonal frequency division multiple access (OFDMA) wireless regional area network (WRAN) system, including: a) measuring a bit energy/noise power spec... | 10/04/2011 |
| 8027414 | Carrier frequency recovering apparatus using phase shift and method thereof Provided is a carrier frequency recovering apparatus and method based on phase shift. The carrier frequency recovering apparatus can recover carrier frequency based on phase shift caused by a frequency offset to thereby perform demodulation without deterioration, no... | 09/27/2011 |
| 8022713 | Method for measuring antenna characteristics out operational frequency range of chamber There is provided to a method for measuring antenna characteristics operating in an out-of-operational frequency range of a chamber, in the chamber having a predetermined operational frequency range, including the steps of: a) measuring reflected wave characteristic... | 09/20/2011 |
| 8019729 | System and method for updating file Provided is a system and method for updating a plurality of the same files consistently. The file update system comprises a first and a second data servers formed as pipe line type network for storing an original file and a duplicate file of the original file respec... | 09/13/2011 |
| 8015016 | Automatic translation method and system based on corresponding sentence pattern Provided are an automatic speech translation system and a method for obtaining accurate translation performance with a simple structure. Because input and output sentences are written in different languages, automatic speech translation requires techniques for proce... | 09/06/2011 |
| 8010814 | Apparatus for controlling power management of digital signal processor and power management system and method using the same Provided are an apparatus for controlling power management of a DSP (Digital Signal Processor) and a power management system and method using the same. The power management system includes a command decoding device for decoding a program into which a PSM (Power Savi... | 08/30/2011 |
| 8010346 | Method and apparatus for transmitting wideband speech signals A method and an apparatus for transmitting a speech signal are provided. A speech signal transmitter includes a quadrature mirror filter, a base sub-band encoder, an enhancement sub-band encoder, and a network connector. The quadrature mirror filter receives a speec... | 08/30/2011 |
| 8009728 | Parallel equalizer for DS-CDMA UWB system and method thereof A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and filtering the plurality of input signals in parallel in a ‘symbol dec... | 08/30/2011 |
| 8009118 | Open-ended two-strip meander line antenna, RFID tag using the antenna, and antenna impedance matching method thereof An open-ended two-strip meander line antenna, an RFID tag using the same and an antenna impedance matching method thereof are provided. The antenna includes: a radiating strip line for deciding a resonant frequency of the antenna; and a feeding strip line for provid... | 08/30/2011 |
