Abstract:
PURPOSE: A diversity gain providing wireless communication system for a multicast service is provided to improve multicast service providing efficiency by reducing interference between cells of a repeater. CONSTITUTION: Repeaters(310~312) transmits data to a terminal and receives the data from the terminal by using a specific frequency band according to the distribution of the terminal on a wireless communication system. A base station(300) transmits the data to the repeater and receives the data from the repeater by using the frequency band and other frequency band of the repeater.
Abstract:
PURPOSE: A remote authenticating system and a method thereof are provided to eliminate mutual authentication between servers by directly authenticating between a broadcast receiving terminal and a visited CAS authenticating server. CONSTITUTION: An authentication server encodes content. The authentication server transmits the encoded content. The authentication server transmits an ECM(Entitlement Control Message) and an EMM(Entitlement Management Message) for decoding the encoded content. A broadcast receiving terminal(120) produces control words based on the ECM and EMM. The broadcast receiving terminal decodes the encoded content using the produced control words.
Abstract:
PURPOSE: An apparatus and a method for normally displaying a three dimensional image by determining whether to be normal of the three dimensional image are provided to normally display a three dimensional image by determining whether to determine the existence and nonexistence of the three dimensional image. CONSTITUTION: A three dimensional image system automatically recognizes an image. The left image and the right image which are recorded by a plurality of image pickup devices are received from a receiver(100). A calculation unit(121) calculates a standard element and a selection element by using the selection element. A determining unit(120) determines whether to be normal of the left image and the right image. A correcting unit(130) corrects the left image and the right image according to a decision result.
Abstract:
A modular multiplier and a method thereof are provided to control a memory directly while continuously performing word-base modular multiplication process. A modular multiplying unit(220) repetitively performs a modular multiplication operation. A memory(230) stores one or more return values generated during the operation process. A modular interface unit(210) is synchronized with the modular multiplying unit by using one of the return values, stores values outputted from the multiplying unit in the memory, and then reads at least one value requested by the multiplying unit from the memory to provide the read result to the multiplying unit.
Abstract:
본 발명은 플랫폼의 무결성 정보를 이용하여 네트워크 인증을 수행함으로써 유해 플랫폼의 네트워크 접속을 차단하여 네트워크를 안전하게 보호하는 플랫폼 무결성 정보를 이용한 네트워크 인증 장치 및 방법에 관한 것으로서, 네트워크 접속을 요청하는 모바일 플랫폼 장치로부터 사용자 접속 정보와 상기 모바일 플랫폼 장치의 무결성 정보를 확인하여, 등록된 사용자이고 플랫폼의 무결성 검증이 성공하면, 해당 모바일 플랫폼 장치의 네트워크 접속을 허용하도록 함으로써, 유해 플랫폼의 네트워크 접속을 사전에 차단하는 것이다. 모바일 플랫폼, 네트워크 인증, 무결성
Abstract:
본 발명은 소정 주파수의 클럭 신호에 의해 동작하는 하드웨어 장치의 안전한 동작과 시스템의 신뢰성을 구축하기 위하여 상기 클럭 신호의 주파수의 이상을 탐지하는 주파수 센싱 장치에 관한 것으로서, 상기 장치는, 판별 대상인 클럭 신호의 적분 전압으로부터 상기 클럭 신호가 정상 주파수 범위보다 낮은 지를 감지하며, 상기 클럭 신호의 적분 전압의 비교 신호의 미분 전압으로부터 상기 클럭 신호가 정상 주파수 범위보다 높은 지의 여부를 감지하도록 구성된다. 클럭, 주파수 이상, 적분기, 미분기
Abstract:
A modular multiplication device and a method for designing the same are provided to analyze and change a structure easily by achieving unity of the structure by controlling a hardware resource and performance by integrating a CSA(Carry Save Adder) module and related modules, and adding and subtracting a CSA module, thereby improving performance without designing a system in a new structure, and reducing time and cost. A modular multiplication device includes multiplexors(111,112,113) selecting an initial input value and selecting carry and sum values, a carry register(121) saving the selected carry values, a sum register(122) saving selected sum values, and at least one or more CSAs(130) executing first carry save add to a value obtained by multiplying one word bit of a current order by another word, and values outputted from the carry register and the sum register, and executing second carry save add to a result of the first carry save add and a result obtained by multiplying bit and word unit module of a current order.
Abstract:
A device for generating a true random number by using an oscillator sampling method is provided to generate a true random number at low cost with low power consumption while fast generating the true random number by digitally designing the device and using an oscillator control function. A device(100) for generating a true random number includes a first oscillating circuit(110) providing output of oneself as data input; a second oscillating circuit(120) providing output of oneself as clock input; a POR(Power On Reset) circuit(130) providing output of oneself as reset input; a first D-flipflop(140) operating with the input of the data, clock, and reset; an inverter(160) inverting output of the second oscillating circuit; and a second D-flipflop(150) having output of the first D-flipflop as data input, output of the inverter as clock input, and operated by a reset signal applied from the outside to generate a true random number. The POR circuit provides an operation starting signal to the first and second oscillating circuits and provides a reset signal to the first D-flipflop.
Abstract:
An RFID tag device and an operation method thereof are provided to perform a function by designing the RFID tag device with a digital logic for performing only the required function such as issuance, authentication, and usage. An RF interface(11) extracts a command from a received RF signal. A storing part(14) stores ID information and a key value for encryption. An encryptor(13) encrypts the ID information by using the key value. A controller(12) reads the ID information and the key value from the storing part, and outputs the ID information and the key value to the encryptor by the command received from the RF interface, and receives and outputs the encrypted ID information through the RF interface. The storing part is a non-volatile memory storing the information even if power is not supplied. The controller includes an RF interface linker(121), an encryptor linker(122), a storing part controller(123), and a command processor(124) implemented as the digital logic.
Abstract:
본 발명은 단말기와 연동하는 통합 전파 식별 장치 및 시스템에 관한 것으로, 단말기와 연동하는 통합 전파 식별 장치에 있어서, 외부장치인 비접촉 리더와 통신하여 RF 태그 기능을 수행하는 아날로그 RF 신호 처리부; 외부장치인 비접촉 태그와 통신하여 RF 리더 기능을 수행하는 RF 리더부; 및 상기 단말기와 연결되고, 상기 아날로그 RF 신호 처리부와 상기 RF 리더부에 대한 디지털 신호 처리를 수행하며, 상기 단말기를 통하여 상기 아날로그 RF 신호 처리부와 상기 RF 리더부의 동작을 제어하는 RF 인터페이스부;로 구성된다. 따라서, RF 태그 및 RF 리더 기능을 포함하는 통합 전파 식별 장치와 연동하는 단말기는 통합 전파 식별 장치를 제어하여 RF 태그 기능과 RF 리더 기능을 함께 이용할 수 있다.