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APPENDIX 6. -- Index Table
The following description details how the DVR manages an index table issue.
The DVR will generate a time index table indicating recorded data kept in a respective HDD. This allows to
individually select record data to be displayed via alarm list search and full list search. The maximum number of
lists, for a respective HDD, is 2015. When the list of any given HDD is used up and the disk is not full, for a new
recording 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 in total does remain
2015. And the next oldest data should be kept under the index of the oldest data. For any new-recorded data, this
approach will be applied until the disk becomes full.
HD1
HD1
1
2002-02-01
12:20
1
2002-02-01
12:20
2
2002-02-01
13:30
2
2002-03-01
16:00
3
2002-03-01 16:00
. 2015 lists
.
.
.
.
.
2014
2002-03-04
16:00
2015
2002-03-04
16:00
2015
2002-08-01
17:30
In the rewrite recording mode, when the archived hard disk drive is full, the DVR will start overwriting the oldest
data recorded. As a previous recorded data was partially overwritten by a recent recording, the indicating time
index of that data will be changed corresponding to the starting time of the session remaining. The index of the
session should be dismissed from the table when it is fully overwritten.
Previously
recorded data
overwritten
Previously recorded data remaining
The point stops recording
2015 lists
Summary of Contents for IV-100CD
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