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Shenzhen Changehome Microelectronics Co.,Ltd

Which One Is Better Between DVR & NVR

DVR is called a hard disk recorder. It can be used to store an analog camera connected to the DVR. Note: The DVR is connected to an analog camera.


NVR is called a network hard disk recorder. It is similar to a disk array, providing network storage space for IPC or DVS, that is to say, the code stream after encoding and network transmission is stored. NVR is connected to the network camera


Analog camera (Camera):


The analog camera (Camera) is a front-end device for acquiring images of the surveillance scene. It uses a CCD image sensor as a core component, plus a synchronization signal generation circuit, a video signal processing circuit, and a power supply. In recent years, new low-cost CMOS image sensors have developed rapidly, and CMOS image sensor-based cameras have begun to be used in videophone or conference television systems where image quality is not critical. Since the resolution and low illumination of the CMOS image sensor are not comparable to the CCD image sensor for the main indicators, the camera used in the TV monitoring system is still a CCD camera. The signal output by the analog camera (Camera) is a video signal, which can only transmit one-way video signals, and needs to be connected to a monitor or a hard disk recorder for monitoring and recording.


IP Camera:


The IP Camera integrates a video compression and network transmission processing module (DVS) based on an analog camera (Camera), which combines the technical features of an analog camera and a video server. The network camera can be operated independently as long as it is placed in any location with an IP network interface. In addition to the image capture function of the traditional camera, the network camera also has a digital compression controller and a WEB-based operating system (including a web server, an FTP server, etc.), so that the video data is compressed and encrypted, and then passed through the network ( The LAN, Internet or wireless network is sent to the end user, and the remote user can access the network camera on the PC using a standard web browser or client software, monitor the target scene in real time, and can access the image data. Real-time storage, in addition to the camera to control the pan/tilt and lens of the camera for full-scale monitoring. Some network cameras also have other functions, such as voice intercom, alarm input, relay output, motion detection, analog video output, and SD card local storage video data. 


Users can decide whether to use DVR or NVR according to their needs.

The best thing for you is the best.

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