Abstract: An electrostatic discharge (ESD) protection circuit is provided. The ESD protection circuit includes a transient-state detection circuit configured to generate a dynamic triggering signal based on a voltage change rate of a voltage on a first power rail; a voltage detection circuit configured to generate a static triggering signal based on the voltage on the first power rail; a trigger circuit configured to generate a discharge control signal based on the dynamic triggering signal and the static triggering signal; and a main discharge circuit configured to discharge an electric charge from the first power rail to a second power rail based on the discharge control signal.

Abstract: An electrostatic discharge (ESD) protection circuit is provided. The ESD protection circuit includes a transient-state detection circuit configured to generate a dynamic triggering signal based on a voltage change rate of a voltage on a first power rail; a voltage detection circuit configured to generate a static triggering signal based on the voltage on the first power rail; a trigger circuit configured to generate a discharge control signal based on the dynamic triggering signal and the static triggering signal; and a main discharge circuit configured to discharge an electric charge from the first power rail to a second power rail based on the discharge control signal.

Abstract: The functional chair includes a backrest support, a backrest, a rotation axis, two rotation plates, an operation rod, a massage roller, and an armrest. The backrest is fixed to the backrest support and has a plurality of operation holes perforated at both sides of the front surface in a zigzag pattern, the rotation axis is fixed to a center of the rear surface of the backrest. The two rotation plates have multiple finger-like extensions formed at horizontally the same location as the operation holes and face while not interfering with each other so as to allow each of the finger-like extensions to rotate on the rotation axis through a rotation sleeve. The operation rod is fixed to the opposite side of each finger-like extension on each of the rotation sleeves and emerges to the front direction of the backrest through each operation hole when each rotation plate rotates.

Abstract: The functional chair includes a backrest support, a backrest, a rotation axis, two rotation plates, an operation rod, a massage roller, and an armrest. The backrest is fixed to the backrest support and has a plurality of operation holes perforated at both sides of the front surface in a zigzag pattern, the rotation axis is fixed to a center of the rear surface of the backrest. The two rotation plates have multiple finger-like extensions formed at horizontally the same location as the operation holes and face while not interfering with each other so as to allow each of the finger-like extensions to rotate on the rotation axis through a rotation sleeve. The operation rod is fixed to the opposite side of each finger-like extension on each of the rotation sleeves and emerges to the front direction of the backrest through each operation hole when each rotation plate rotates.

Abstract: A chair having a detachable backrest panel with a massager. The chair includes: a backrest support coupled to one side of back of the chair seat, extending in an upward direction; a first support member coupled to the backrest support in a rotatable manner; a second support member coupled to the backrest support in a rotatable manner; a first backrest rotational axis that is arranged in parallel to the backrest support and has a lower end being coupled to the backrest support and extended therefrom; a second backrest rotational axis that is arranged in symmetry with the first backrest rotational axis with respect to the backrest support and has a lower end being coupled to the backrest support and extended therefrom; a first backrest coupled to the first backrest rotational axis in a rotatable manner; and a second backrest coupled to the second backrest rotational axis in a rotatable manner.

Abstract: Disclosed herein is an ontology-based Electronic Product Code (EPC) automatic conversion method and system. The ontology-based EPC automatic conversion method includes the steps of arranging existing Radio Frequency Identification (RFID) EPC ontology information and newly added EPC ontology information, converting tag data collected from an RFID reader into binary data so as to perform header information extraction and Uniform Resource Name (URN) conversion, extracting the header information of an EPC from the binary data output as a result of the conversion, initializing the ontology properties so as to utilize the EPC ontology, extracting a corresponding code system of the ontology by performing comparison with the header information of the tag data converted into the binary data, extracting the ontology properties from the corresponding code system of the ontology, and performing automatic conversion into URN-type data on the basis of information about the extracted ontology properties.

Abstract: Disclosed herein is a Radio Frequency Identification (RFID) middleware-based sensor data stream processing system and method. The RFID middleware-based sensor data stream processing system of the present invention includes one or more sensors for measuring and collecting surrounding environmental information, sensor nodes for transmitting data collected by the sensors or receiving sensor management commands, a master node for transmitting or receiving data to or from the sensor nodes and for configuring the data received from the one or more sensors into data having a specific protocol structure applied in common to the sensors, and RFID middleware for receiving the sensor data from the master node, converting the sensor data into data of an Electronic Product Code (EPC), and converting the EPC data into data of a Uniform Resource Name (URN) code.

Abstract: Provided is a parity signal generator for generating a parity signal by continuously detecting a horizontal sync signal. The parity signal generator includes a first detecting unit for generating a first detection signal by detecting whether the number of a horizontal sync signal is odd or even during an activation of a vertical sync signal; a second detecting unit for generating a second detection signal by detecting whether the number of the horizontal sync signal is odd or even during an inactivation of the vertical sync signal; and an output unit for receiving the first and second detection signals to output a parity signal.

Abstract: A massage apparatus for bowels in a toilet seat comprising a base member, a seat member, a cover member and a water storage member comprises a motor unit having a motor therein and being disposed at the back of the base member of the toilet seat, a rotary unit having a rotation axis rotatable according to the rotation of the motor and an eccentric member eccentrically coupled to the rotation axis and extending to opposite side portions of the motor unit, a belt portion whose opposite ends being connected to the rotary unit, and an operation unit being disposed at one side portion of the base member and adjusting the on/off state and rotation speed of the motor unit.