Abstract:
A delay time control circuit according to an embodiment of the present invention comprises a delay-locked loop which generates a second clock signal, which is delayed for a predetermined time, in response to a first clock signal; a plurality of delay circuits which receive the first and second clock signals and output third and fourth clock signals in response to first and second digital control signals; and a feedback control unit which detects delay time by referring to the third and fourth clock signals and generates the first and second digital control signals to compensate for the detected delay time. [Reference numerals] (100) Delay-locked loop; (300) Feedback control unit; (AA) Delay circuit 1; (BB) Delay circuit n
Abstract:
PURPOSE: A system and a method for the access control between service resources and devices on a home network middleware are provided to limit the range of functions provided by device resources according to the authority level of service given by a certificate server for controlling the access to the device resources. CONSTITUTION: A certificate server (300) receives descriptive data of devices and service resources on a home network middleware. The certificate server assign authenticodes and the authority level to each device and service resource. The certificate server saves IDs, the authority level, and the authenticodes of every device and service resource on the home network middleware. The certificate server generates an authenticode list, and transmits the authenticode list to each device and service resource. [Reference numerals] (100) Device; (200) Service; (300) Certificate server; (AA,BB) Authenticode & authority level; (CC) Device characteristic information; (DD) Service characteristic information
Abstract:
PURPOSE: A proactive ontology and a rule based estimation system, and a method thereof are provided to offer a requested service by collecting information for the services. CONSTITUTION: A mobile adaptor unit(160) controls a mobile communication device. A system adaptor unit(170) controls context information for home devices. An estimation module(150) estimates the context information for the requested service. The estimation module transmits an alarm message and a control command for providing the service from a mobile or the system adaptor unit by estimating the received context information by notifying the change of the collected context information. [Reference numerals] (130) Software framework; (140) Basic software framework service unit; (150) Estimation module; (160) Mobile adaptor unit; (170) System adaptor unit
Abstract:
PURPOSE: An energy storage system which is equipped with a wired and wireless energy transmission function is provided to store and distribute various energies by providing a system for smart grid. CONSTITUTION: An energy input unit (110) inputs energy. An energy wireless transceiver (130) wirelessly transmits and receives the energy. An energy storage/control unit (140) stores the energy. An energy output unit (160) consumes the stored energy. An energy output control unit (150) distributes the stored energy to the energy output unit. [Reference numerals] (110) Energy input unit; (120) Energy input control unit; (130) Energy wireless transmission/receiving unit; (140) Energy storage/control unit; (150) Energy output control unit; (160) Energy output unit