Abstract: Provided is a method for manufacturing a circuit board provided with metal posts formed on at least one surface of the circuit board, the method including preparing a substrate made of a conductive material, performing a first selective etching a first surface of the substrate in regions corresponding to insulating portions of a first circuit pattern, laminating a first insulating layer over the first surface of the substrate, and performing a second etching on a second surface opposite of the first surface of the substrate, thereby forming the metal posts and the first circuit.

Abstract: Provided is a surveillance system including a radar transmitter which transmits a detection signal to an object existing within a surveillance region, and at least one radar receiver which is installed separate from the radar transmitter within the surveillance region, receives a signal reflected by the object, and predicts a signal distance of the object which is a sum of a distance from the radar transmitter to the object and a distance from the object to the at least one radar receiver.

Abstract: An apparatus and method of storing and searching for an image are provided. The apparatus includes: a first signal processor which receives location information about an object detected by a sensor, generates and transmits a camera control signal to a camera based on the location information so that the camera performs a surveillance in a direction according to the camera control signal, and receives from the sensor an alarm signal notifying an intrusion of the object into a preset area; a second signal processor which receives a surveillance image of the intruding object received from the surveillance of the camera; and a control unit which stores the surveillance image in a storage unit.

Abstract: A radar sensor and a method of detecting an object by using the same are provided. The method includes: receiving at least one radar signal reflected from the object; converting the received at least one radar signal to at least one signal in a frequency domain; accumulating the converted at least one signal for a predetermined time and extracting at least one feature from the accumulated at least one signal; and identifying the object by comparing the extracted at least one feature with at least one reference value stored in a database.