Abstract: The present invention relates to a display driving circuit, which includes a latch-up prevention unit, thus preventing the occurrence of latch-up. The display driving circuit according to the present invention includes first to third voltage generation units configured to receive an externally applied input voltage having a same magnitude and generate respective voltages having different magnitudes, and a latch-up prevention unit connected to the second voltage generation unit and configured to receive a lower voltage among voltages output from the second voltage generation unit and to ground the lower voltage for a preset period of time. Accordingly, the second driving voltage output from the second voltage generation unit is connected to the latch-up prevention unit, including a plurality of switching means connected to the ground, and is grounded for a preset period of time, thus preventing the occurrence of latch-up and reducing the size of the driving circuit.

Abstract: A face region detecting apparatus includes a face detection and recognition unit for encoding a face image into a face feature code through an internal operation process and storing the face feature code in the form of a database, in which the face image is extracted in a face detection step of extracting a face image from an inputted image material; and a face detection server for transmitting the face feature code through a network, comparing the transmitted face feature code with face feature codes previously stored in a database to determine whether face features are matched, and transmitting a face recognition result to the face detection and recognition unit. Accordingly, a face image of a specific person is converted into a face feature code, whereby the face feature code can be applied to recognize and detect the specific person or to search for only the specific person from a DVR real-time input image or a recorded image screen.