Abstract:
블록 코딩이 적용된 부호화 및 복호화를 위한 방법 및 장치가 제공된다. 블록 코딩 부호화 및 복호화를 위한 방법 및 장치에 의해 유무선 전송로에서 연속된 데이터 손실이 발생하더라도, 중요도가 높은 데이터를 신뢰성 있게 복구함으로써 최소한의 품질의 끊김 없는 서비스가 제공될 수 있다. 중요도가 높은 데이터는 전치 중복 계산 또는 후치 중복 계산된다. 손실된 특정한 시간대의 데이터는 다른 시간대의 중복된 데이터에 의해 복구될 수 있다.
Abstract:
이동통신망을 이용하여 공유형 VoD (Video on Demand) 방송 서비스를 제공하기 위한 방법 및 장치에 관한 것으로, 방송 컨텐츠 목록에서 선택한 방송 요청 컨텐츠 중 제1 순위 요청 컨텐츠를 신청 단말들로 동시에 제공하여 무선 자원을 효율적으로 사용하는 방법 및 장치가 개시된다.
Abstract:
Disclosed is a light-shielding device including a solar cell. The light-shielding device including a solar cell includes: a frame which opens or closes according to the state of atmosphere; a light-shielding layer which is coupled to the frame and blocks the sunlight; and a solar cell which is coupled to the light-shielding layer and generates electricity from the solar energy. Accordingly, the present invention can block the sunlight from entering a greenhouse and generates electricity out of the solar energy at the same time.
Abstract:
The present invention relates to a method for automatically controlling a headlight of a car, which includes the steps of: determining whether an operation mode of the headlight is an automatic mode or not; determining congestion or external illumination around the car if the operation mode is the automatic mode; and turning off the headlight according to the congestion or if the external illumination around the car exceeds a preset reference value.
Abstract:
Disclosed are a method and an apparatus for establishing discovery and a communications resource of cellular based device to device direct communications. A method for establishing discovery and a communications resource of cellular based device to device direct communications includes steps of receiving a device to device direct communications service request message including information on a service type established with respect to a service and information on at least one of a discovery type and a communications type from a device providing the service in a device to device direct communications scheme by a device for managing devices performing device to device direct communications using a mobile communications network; allocating an identifier for the device to device direct communications based on the received device to device direct communications service request message; and transmitting the allocated identifier, the information on the service type, and information on at least one of the discovery type and the communications type to a base station serving the device in order for the base station to allocate discovery resource and communications resource to the service.
Abstract:
The present invention relates to a snow removal device for a greenhouse having a suction function, which sucks snow accumulated on the upper part of a greenhouse in heavy snow to prevent collapse and damage of the greenhouse due to snow accumulation, melts the sucked snow and stores the sucked snow in a reservoir to be utilized as agricultural water. The present invention relates to a snow removal device for a greenhouse, which is to suck snow accumulated in the outside of a greenhouse, and to heat into water and to store the water in a reservoir, and comprises a sensing unit of sensing the snow depth of the outside of the greenhouse to determine whether to perform the snow removal, and sensing the water level of the reservoir to determine whether or not water is stored in the reservoir; a suction unit sucking snow accumulated on the greenhouse according to the sensing result of the sensing unit; a heating unit liquefying the snow sucked in the suction unit so as to be stored in the reservoir as water; a control unit connected to the sensing unit in circuit and controlling the operation of the suction unit and the heating unit; and a moving unit operated by the control unit and moving the suction unit in the outside of the greenhouse. [Reference numerals] (210) Reservoir; (220) Sensing unit; (230) Suction unit; (240) Heating unit; (250) Control unit; (260) Driving unit
Abstract:
The present invention relates to a platform device facilitating the addition and replacement of a sensor and a driver by providing an interface and a service corresponding to elements which control an agricultural environment in an agricultural environment control system and performing abstraction over a sensor and a driver in the agricultural environment control system. The platform device comprises: an application supporting layer unit for generating and operating an environmental task which supports an application corresponding to an environment to which an agricultural environmental control system is applied; a service layer unit for providing a service library which the application uses; a function layer unit for performing functions required to operate the application; an dynamic adaptation layer unit for defining an environmental task in an application layer regardless of number of sensors and drivers installed in the environment to which the agricultural environmental control system is applied; and a physical abstraction layer unit for generating a mapping table using a result of abstraction over the sensor and driver and allowing the agricultural environmental system to access the sensor and driver using the mapping table. [Reference numerals] (10) Application;(20) Middle ware;(200) Agricultural environment control platform device;(30) Device driver;(41) Sensor;(42) Driver;(AA) Greenhouse environment