Abstract: Disclosed herein is a separator for electrochemical devices, configured to guarantee electrical insulation between a positive electrode and a negative electrode, wherein the separator includes no polyolefin substrate, and includes inorganic particles, a binder for coupling between the inorganic particles, and a crosslinking agent.

Abstract: The present invention relates to a composition for a polymer electrolyte which includes a polymerizable oligomer capable of forming an excellent crosslink during a polymerization reaction. Also, the present invention relates to a polymer electrolyte, which may ensure high oxidation stability and ionic conductivity by using the composition for a polymer electrolyte, and a lithium secondary battery including the same.

Abstract: A method of activating a secondary battery includes an operation of deriving a reduction reaction voltage according to an electrolyte additive, a pre-charging operation of pre-charging the secondary battery into which an electrolyte containing the electrolyte additive is injected, and a pre-aging operation of wetting an electrode assembly accommodated in the secondary battery with the injected electrolyte and aging the electrode assembly. A charging termination voltage in the pre-charging operation is less than the reduction reaction voltage.

Abstract: The present invention relates to a device for inputting and controlling driving state information of a billiard ball for playing a billiard game in cyberspace and, more specifically, to a device for inputting and controlling driving state information of a billiard ball, in which an actual billiard ball is fixedly mounted on a standard table, wherein the billiard ball is mounted to be freely rotatable, and is hit by an actual billiard cue stick to receive the billiard ball's effecto information, rotation speed, and rotation direction, as well as driving state information for hitting strength and movement direction, and the received information is processed through driving state information processing software to display an image result reflecting the billiard ball's movement direction and movement amount on the actual billiard table, thereby making it possible to enjoy a billiard game in cyberspace as though a real game were being played.

Abstract: A cue stick support for billiards, and, more specifically, to a cue stick support for billiards having an improved grip feeling, in which the cue stick support is placed, in a tube shape, between a finger that forms a bridge and a cue stick, to hold and support the cue stick over a wide surface, thereby achieving accurate hitting by allowing the cue stick to easily move only in the forward and backward directions while preventing the cue stick from shaking up and down and left and right during a preparation motion for hitting a cue ball and a hitting motion. In addition, seating indentations are formed at portions on the outer surface of the cue stick support, where the thumb, index and middle fingers are brought into contact when gripping, thereby improving the grip feeling.

Abstract: The present invention relates to a device for inputting and controlling driving state information of a billiard ball for playing a billiard game in cyberspace and, more specifically, to a device for inputting and controlling driving state information of a billiard ball, in which an actual billiard ball is fixedly mounted on a standard table, wherein the billiard ball is mounted to be freely rotatable, and is hit by an actual billiard cue stick to receive the billiard ball's effecto information, rotation speed, and rotation direction, as well as driving state information for hitting strength and movement direction, and the received information is processed through driving state information processing software to display an image result reflecting the billiard ball's movement direction and movement amount on the actual billiard table, thereby making it possible to enjoy a billiard game in cyberspace as though a real game were being played.

Abstract: The present invention relates to a billiards pointer for checking thickness and supporting a cue and, more particularly, to a billiards pointer in which a light irradiation ring is attached to an index finger so that two or more vertical lights are irradiated from the light irradiation ring, each irradiated vertical light, when a cue ball is being hit, simultaneously irradiates the cue ball and a first object ball to predict the degree of thickness by which the cue ball will hit the first object ball, the lights are blocked when the light irradiation is directed upward at a predetermined angle by means of a built-in tilt sensor, and a supporting ring fitted to a thumb is further provided, together with the light irradiation ring, to support the cue from above and below, thereby minimizing left and right rotations of the cue to enable precise hitting, so that beginners can easily understand, and enjoy a game of billiards.

Abstract: A thickness checking pointer for billiard practice is provided, where while being fitted to a finger supporting a cue stick, the thickness checking pointer guides the cue stick to move in a straight line during forward and backward preparation motion or hitting motion of the cue stick, and emits a horizontal light beam in a travelling direction of the cue stick, so as to not only check which shape into which a cue ball and an object ball are arranged on the same straight line as the cue stick but also estimate the degree of thickness by which the cue ball moved upon hitting collides with the object ball, thereby enabling even beginners to easily understand billiards.

Abstract: Provided are a method and apparatus for providing and using content advisory (CA) information on Internet contents. A method of providing CA information by using a CA information server, includes receiving a request for the CA information on a content, from an Internet Protocol television (IPTV); searching for CA information on the content; and transmitting the found CA information to the IPTV. A method of using CA information when an IPTV reproduces a content not having the CA information, according to the present invention, includes transmitting a request for CA information, to a CA information server; receiving the CA information from the CA information server; analyzing the CA information; and applying the CA information.