Digital video recorder system and operating method thereof

Abstract

The present invention relates to a digital video recorder system which classifies sounds detected by a microphone according to types and stores images of an area that produces sound, thereby helping a user search an image by the type of sound and achieving a quicker image search; and an operating method thereof. The present invention comprises: a camera to which an image is inputted; a microphone to which sound is inputted; a sound image input unit for converting an inputted image and sound from the camera and microphone into digital signals; a sound recognizing unit for analyzing the sound which has been converted into the digital signal in order to distinguish the type of sound; an image management unit for managing an image of an area that produced a particular sound; a sound image file storage unit for creating an image file of the area that produced the particular sound and then storing in a database; an image DB for storing a general image recorded file; a sound image DB for storing the image file of the area that produces sound; a sound image information DB for saving information on image files by the type of sound; a sound image search unit for searching of an image file stored in the image DB, the sound image DB and the sound image information DB, in response to an image file search request; and a sound image display management unit connected to a user interface, for providing an image file search function and reproducing a searched image file.

Description

technical field [0001] The invention relates to a digital video recorder system and its application method. Specifically, it is a digital video recorder system and its application method that distinguishes the sound perceived by the microphone into different types and saves the interval image that generates the sound, so that image retrieval can be performed according to the sound type, thereby providing a faster image retrieval function . Background technique [0002] Generally, a digital video recorder (Digital Video Recorder, hereinafter referred to as "DVR") system refers to a device that records images on a hard disk-based digital storage device instead of a video tape (Video Tape), also known as a PVR (Personal Video Recorder). )system. [0003] The DVR system refers to converting the image data input from at least one monitoring camera as an analog signal into a digital signal, then compressing and saving the image according to the international moving image compres...

AI Technical Summary

Problems solved by technology

[0008] As mentioned above, the existing DVR system stores the image data for the entire interval or the action occurrence interval by day and hour, and cannot only search for a specific sound occurrence interval, ignoring the sound as an important factor. , only considering the development of image processing technology

[0009] Therefore, in order to retrieve and analyze images of a specific interval in the stored image data, the existing DVR system has to restore and regenerate all the stored images in chronological order, which is cumbersome and time-consuming.

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