Abstract: A method for controlling a door lock device includes checking whether strength of a scanned signal obtained by scanning a signal output from a smart phone is greater than predetermined strength of a signal by the door lock device; comparing strength of a signal (RSSI) of the smart phone received through an external antenna installed outside the door in which the door lock device is installed with the RSSI received through an internal antenna installed inside the door by the door lock device; authenticating whether the smart phone is a valid smart phone, when the strength of a signal of the smart phone received through the external antenna is greater than the strength of a signal of the smart phone received through the internal antenna by a predetermined value; and opening the door when the smart phone is authenticated as the valid smart phone according to the authenticated result.

Abstract: A method for controlling a door lock device includes checking whether strength of a scanned signal obtained by scanning a signal output from a smart phone is greater than predetermined strength of a signal by the door lock device; comparing strength of a signal (RSSI) of the smart phone received through an external antenna installed outside the door in which the door lock device is installed with the RSSI received through an internal antenna installed inside the door by the door lock device; authenticating whether the smart phone is a valid smart phone, when the strength of a signal of the smart phone received through the external antenna is greater than the strength of a signal of the smart phone received through the internal antenna by a predetermined value; and opening the door when the smart phone is authenticated as the valid smart phone according to the authenticated result.

Abstract: An entrance and exit control system and method for Bluetooth, wherein a first Bluetooth module mounted on a digital door lock and including an antenna having directivity toward the outside of a door and a second Bluetooth module mounted on a remote controller are configured to communicate with each other, and the first Bluetooth module or the second Bluetooth module is switched from a slave mode to a master mode when a keypad of the digital door lock or a keypad of the remote controller is touched. The digital door lock may switch, in response to a touch, from a slave to a master to implement a door opening function, and the remote controller may switch, in response to a touch, from a slave to a master to implement the door opening function.

Abstract: A digital door lock system includes a receiving antenna matching unit configured to receive a power signal wirelessly transmitted from the wireless power transmitting device; a full-wave rectifying unit configured to convert a sinusoidal signal waveform outputted from the receiving antenna matching unit to one of constant polarity; a voltage regulating unit configured to stabilize a signal outputted from the full-wave rectifying unit; a secondary battery configured to supply a power in case of power outage; an excessive charging/discharging preventing unit configured to charge the secondary battery by a stabilized power of the voltage regulating unit and having an excessive charging/discharging preventing function; and a power supply unit configured to supply the power of the voltage regulating unit to the respective units of the system and to supply the power of the secondary battery to the respective units of the system in the case of power outage.

Abstract: An entrance and exit control system and method for Bluetooth, wherein a first Bluetooth module mounted on a digital door lock and including an antenna having directivity toward the outside of a door and a second Bluetooth module mounted on a remote controller are configured to communicate with each other, and the first Bluetooth module or the second Bluetooth module is switched from a slave mode to a master mode when a keypad of the digital door lock or a keypad of the remote controller is touched. The digital door lock may switch, in response to a touch, from a slave to a master to implement a door opening function, and the remote controller may switch, in response to a touch, from a slave to a master to implement the door opening function.

Abstract: A digital door lock system includes a receiving antenna matching unit configured to receive a power signal wirelessly transmitted from the wireless power transmitting device; a full-wave rectifying unit configured to convert a sinusoidal signal waveform outputted from the receiving antenna matching unit to one of constant polarity; a voltage regulating unit configured to stabilize a signal outputted from the full-wave rectifying unit; a secondary battery configured to supply a power in case of power outage; an excessive charging/discharging preventing unit configured to charge the secondary battery by a stabilized power of the voltage regulating unit and having an excessive charging/discharging preventing function; and a power supply unit configured to supply the power of the voltage regulating unit to the respective units of the system and to supply the power of the secondary battery to the respective units of the system in the case of power outage.