Abstract:
PURPOSE: A visible light wireless communication method which uses a DMX-512 network and an apparatus for the same are provided to effectively deliver visible light communication data which is transmitted through a visible light wireless communication to a light source by using a DMX-512 lighting control network. CONSTITUTION: A DMX signal generator (420) generates visible light communication data packets. Each of the visible light communication data packets includes a DMX header, segmented information, and a data fragment. A DMX signal transmitting unit (408) transmits the visible light communication data packets to LED lighting devices which are connected through a DMX-512 network for a visible light wireless communication. The data fragment is generated by fragmentizing a visible light communication frame to transmit. [Reference numerals] (401) User interface; (402) Memory; (403) Segmenting unit; (404) Communication data extracting unit; (405) Communication data receiving unit; (408) DMX signal transmitting unit; (410) Scheduling unit; (411) Automatic control information generating unit; (420) DMX signal generating unit
Abstract:
PURPOSE: A wireless recognition powerless sensor tag system and an operating method thereof are provided to be efficiently operated in a low power environment by gradually sensing memory storage according to the size of power generated in a tag. CONSTITUTION: A power generating unit(21) receives a wireless signal from a sensor reader to generate operating power of a tag. A power comparing unit(22) determines the size of the generated power. A control unit(23) stores data sensed by a sensor and an operation of a sensor unit(24) in a volatile memory or a nonvolatile memory according to the size of power. The sensor unit activates the operation of the sensor according to the power supply of the control unit to sense information about surrounding environments including a powerless sensor tag and transmits the same to the control unit. [Reference numerals] (21) Power generating unit; (22) Power comparing unit; (23) Control unit; (24) Sensor unit; (25) Volatile memory; (26) Nonvolatile memory
Abstract:
PURPOSE: A RFID(Radio Frequency IDentification) tag is provided to reduce processing time and energy by overcoming a limitation condition on a processing speed of the RFID tag. CONSTITUTION: An RFID tag(100) includes a communication unit(110), a power generating unit(120), a speed control unit(130), and a frequency generating unit(140). The power generating unit generates power by rectifying an RF signal. The speed control unit determines an operating frequency corresponding to a power range of the power generated by the power generating unit and generates a control signal including the operating frequency in order to deliver the signal to the frequency generating unit. The speed control unit stores a plurality of operating frequencies related to the processing speed. The speed control unit searches for the operating frequency corresponding to the power range of the power. The frequency generating unit generates the operating frequency included in the control signal. The RFID tag is operated by the operating frequency. [Reference numerals] (110) Communication unit; (120) Power generating unit; (130) Speed control unit; (140) Frequency generating unit;
Abstract:
본 발명은 RFID 태그의 인식거리를 조절함으로써, RFID 태크에 포함된 정보를 보호할 수 있는 인식거리 조절이 가능한 RFID 리더, 인식거리 조절이 가능한 RFID 태그 및 인식거리 조절을 통한 RFID 태그의 정보 보호 방법에 관한 것이다. 구체적으로, 인식거리 조절이 가능한 RFID 태그는 RFID 리더로부터 무선신호를 수신하는 태그 통신모듈, 상기 수신된 무선신호로부터 추출된 인식거리에 관한 명령어를 통해 인식거리를 조절하는 인식거리 제어모듈, 및 상기 조절된 인식거리 이내에 위치한 RFID 리더와의 정보 교환을 제어하는 태그 제어모듈을 포함한다.
Abstract:
보안 모드 및 일반 모드를 지원하는 무선 보안 태그 및 무선 보안 리더가 개시된다. 무선 보안 태그의 동작 모드를 제어하는 무선 보안 리더는, 무선 보안 태그로부터 동작 모드를 수신하는 리더 모뎀, 및 상기 수신된 동작 모드를 '일반 모드' 또는 '보안 모드'로 식별하고, 상기 식별된 동작 모드에 따라, 상기 무선 보안 태그를 제어하는 리더 처리부를 포함한다.
Abstract:
PURPOSE: An information providing RFID tag is provided to protect the tag information. CONSTITUTION: A storing module(110) records tag information related to the attached object. If an RFID(Radio Frequency ID) reader requests information reading, a determining module(120) determines authorization of the RFID reader. A control module(130) generates and transmits a void ID for protecting tag information or transmitting tag information to the RFID reader based on a determining result.
Abstract:
PURPOSE: A wireless tag control device and method thereof are provided to obtain information of a wireless tag by using the received identification information. CONSTITUTION: A wireless tag(101) includes a plurality of identification information. The wireless tag transmits identification information among a plurality of identification information to the wireless tag reader module by responding to a connection request from a wireless tag reader module(103). The wireless tag reader module receives one identification information from the wireless tag by interlinking with a connection request to the wireless tag. A processor obtains information of the wireless tag by using the received identification information.
Abstract:
위상 반전 진폭 편이 방식으로 변조하는 RFID 태그 장치 및 방법을 개시한다. 위상 반전 진폭 편이 방식으로 변조하는 RFID 태그는 연속파 및 리더 명령어를 수신하고 변조한 부반송파를 출력하는 안테나; 상기 리더 명령어를 복조하는 복조부; 태그를 식별하는 태그정보를 저장하는 태그 정보 저장부; 상기 리더 명령어 요청에 따라 상기 태그정보와 일치하는 스위치 제어신호를 생성하는 주제어기; 및, 상기 스위치 제어신호에 따라 서로 다른 위상을 가지는 부반송파를 선택적으로 출력하도록 안테나를 스위칭하여 역산란 변조하는 변조부를 포함한다. 위상 반전 진폭 편이, PR-ASK, 태그, 리더, RFID
Abstract:
PURPOSE: A security RFID tag and a method for driving the same are provided to appropriately use self-geneation power and a battery to perform security function smoothly. CONSTITUTION: A power selector selects a tag battery(240) or a power generator(210) as operation power of a tag. If the tag is operated by a security tag, a signal processor(260) controls the power selector to choose one between the tag battery and the power generator. A encryption unit(270) performs encoding for operation as the security tag. A storage unit(230) stores a security tag operation parameter. The signal processing unit determines the need of a security tag operation based on a parameter to control the power selector.
Abstract:
PURPOSE: A method and an apparatus for encoding and decoding audio signal are provided to offer the sound with sense of realism by supporting the play of the multi-channel audio signal. CONSTITUTION: A receiver(110) receives one signal among the multi-channel audio signal and the first audio signal. A first encoding unit(120) extracts spatial parameter from the multi-channel audio signal, mixes the multi-channel audio signal, and generates the second audio signal. A secondary symbol stoker(130) encodes at least one of the first and the second audio signal, and generates the encoded audio signal. A multiplexer(140) multiplexes the encoded audio signal as described above and spatial parameter to generate the satellite DMB(Digital Multimedia Broadcasting) stream.