Abstract: Disclosed is a pin clutch connection structure of an anti-panic gear box, wherein the transmission of rotation to a driving motor which is mounted on a gear box is blocked when rotational force is applied from the outside (manual opening and closing of a door lock), so as to prevent a driving circuit in the gear box from being damaged and to enable manual opening and closing even with a small amount of force.

Abstract: Disclosed is a method for mobile-key service, in which user authentication is performed through NFC between an SE and a door lock. Herein, a mobile phone periodically checks a call service areas of a mobile radio communication network, and the mobile phone enables the NFC function based on a result of the call service area checking operation, and if the mobile phone approaches the door lock, the mobile-key is transmitted to the door lock through the NFC function, and thus the user authentication can be performed.

Abstract: Disclosed is a method for mobile-key service, in which user authentication is performed through NFC between an SE and a door lock. Herein, a mobile phone periodically checks a call service areas of a mobile radio communication network, and the mobile phone enables the NFC function based on a result of the call service area checking operation, and if the mobile phone approaches the door lock, the mobile-key is transmitted to the door lock through the NFC function, and thus the user authentication can be performed.

Abstract: Disclosed is an easy-to-retrofit, electronically controlled door lock system designed to change or expand functions of a door lock without having to replace the door lock as a whole. The door lock system includes a door lock 100 for locking and unlocking a door in response to an input signal from a key means, the door lock having predetermined inherent functions, and a function expanding device 200 having additional functions other than the predetermined inherent functions of the door lock, the function expanding device being replaceably attached to the door lock.

Abstract: Disclosed is a tubular-type digital door lock with an integrated driving unit-deadbolt structure. The door lock includes: a driving unit having a driving motor, and a group of gears associated with a spindle of the driving motor; a shaft unit having a rotary part with gear teeth formed on the periphery thereof, and an arm extending from the rotary part; a deadbolt slider formed with a deadbolt at a side thereof, the deadbolt slider being moved in cooperation with the shaft unit; a locking detection sensor coming into contact with a side of the arm so as to determine whether the deadbolt is locked or unlocked; a main control board receiving a signal from the locking detection sensor so as to operate the driving motor; and a main body including the driving unit, the shaft unit, the locking detection sensor, and the deadbolt slider.

Abstract: Disclosed is an easy-to-retrofit, electronically controlled door lock system designed to change or expand functions of a door lock without having to replace the door lock as a whole. The door lock system includes a door lock 100 for locking and unlocking a door in response to an input signal from a key means, the door lock having predetermined inherent functions, and a function expanding device 200 having additional functions other than the predetermined inherent functions of the door lock, the function expanding device being replaceably attached to the door lock.

Abstract: The inventive electronic information key system comprises at least one electronic information key and a locking device unlocked with the electronic information key. The electronic information key includes: an ID code storage having a plurality of memory areas, each storing different ID codes; a body, resin-treated, for installing the ID code storage; and a contact, mounted on the body and electrically connected to the ID code storage. The locking device includes: a key holder for electrically contacting the contact of the electronic information key; a registered ID code storage for storing values corresponding to the ID codes stored in any one of the plurality of memory areas of the ID code storage of the electronic information key; a controller for comparing the ID codes stored in an area of the ID code storage with the ID codes stored in the registered ID code storage to thereby verify whether the electronic information key is duly operating, when the contact electrically contacts the key holder.