10. Index Table

The following description details how the NVR manages an index table issue.

The NVR will generate a time index table indicating recorded data is kept in a particular HDD. This allows to individually selecting recorded data to be displayed via the alarm list search and full list search. The maximum number of lists, for a given HDD, is 3000. When the list of any given HDD is used up-and the disk is not full, The unit will still use the rest of the space for recording. In such a case, an index for the recent recorded data will be generated and the index of the next oldest data will be erased so that the list does remain 3000 in total. And the next oldest data will be kept in the index of the corresponding oldest data. For any newly-recorded data, this approach will be applied until the disk becomes full.

HD1

 

HD1

 

 

1

12-02-02 12:20:55

1

12-02-02 12:20:55

 

2

12-02-02 13:30:33

2

01-30-03 16:00:34

 

3

01-30-03 16:00:34

 

:

 

3000 LISTS

:

 

:

3000 LISTS

 

:

 

:

 

 

:

2999

02-03-03 16:00:56

 

3000

02-03-03 16:00:56

3000

02-08-03 17:30:58

 

In the rewrite recording mode, when the archived hard disk drive is full, the NVR will start overwriting the oldest data recorded. As the previous recorded data was partially overwritten by the recent recording, the indicating time index of that data will be changed corresponding to the starting time of the remaining session. The index of the session will be deleted from the table when it is fully overwritten.

Previously recorded data overwritten

The point stops recording

Previously recorded data remaining

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Approach Tech NVR-2018 manual 12-02-02 01-30-03 Lists 2999 02-03-03 3000 02-08-03

NVR-2018 specifications

The Approach Tech NVR-2018 is a state-of-the-art network video recorder designed to meet the demands of modern surveillance systems. With advancements in technology and an emphasis on usability, this NVR serves as a reliable solution for both home and business security needs.

One of the standout features of the NVR-2018 is its high-capacity storage capability. Equipped with support for multiple hard drives, it can accommodate a substantial amount of video footage without compromising performance. Users can opt for various RAID configurations that ensure data redundancy and reliability. This is crucial for environments where continuous monitoring is essential.

Another significant characteristic is the device’s compatibility with a wide array of IP cameras. The NVR-2018 supports various resolutions, including 4MP, 5MP, and even 4K, allowing users to choose the optimum quality for their specific needs. The device incorporates advanced H.265 video compression technology, enabling efficient storage management while maintaining high-quality video output. This not only helps save storage space but also enhances streaming performance, reducing latency and buffering.

Additionally, the Approach Tech NVR-2018 features intelligent video analytics, which can provide users with actionable insights. These features include motion detection, line crossing detection, and facial recognition, making it easier to monitor activities and respond to incidents promptly. The flexibility of remote access through mobile applications and web browsers further enhances usability, allowing users to view live footage and recorded events from anywhere in the world.

The user interface is designed for ease of use, featuring a streamlined, intuitive dashboard that allows quick navigation through multiple camera feeds and settings. Integration with third-party software systems, such as alarm systems and access control, enables a comprehensive surveillance solution tailored to specific operational needs.

The NVR-2018 is built with robust security features to protect against unauthorized access and data breaches. Encryption protocols, user authentication, and automatic firmware updates ensure that the system remains secure and reliable.

Overall, the Approach Tech NVR-2018 combines cutting-edge technology, high-performance capabilities, and user-centric design to deliver a powerful surveillance solution for diverse applications. Its blend of storage capacity, camera compatibility, and intelligent analytics makes it a top choice for users seeking an effective method of monitoring and safeguarding their premises.