Data management apparatus and method for surveillance system
View Patent ↗Provided are a data management apparatus and a data management method for a surveillance system. The data management apparatus includes: a first storage unit configured to store therein data provided from a data input unit; a second storage unit configured to store therein a copy of the data; and a control unit configured to control the first storage unit to store the data therein on a real time basis, and if the data stored in the first storage unit is equal to or larger than a predetermined threshold amount, generate the copy and control the second storage unit to store the copy in the second storage unit as much as a given amount.
1. A data management apparatus, comprising:
a first storage unit configured to store therein data provided from a data input unit;
a second storage unit configured to store therein a copy of the data; and
a control unit configured to control the first storage unit to store the data therein on a real time basis, and if the data stored in the first storage unit is equal to or larger than a predetermined threshold amount that is less than a storage capacity of the first storage, generate the copy and control the second storage unit to store the copy in the second storage unit as much as a given amount,
wherein the control unit is configured to overwrite the copy in the order in which the copy has been generated in given data units or file units if a capacity of the second storage unit is insufficient to store another data.
2. The data management apparatus of claim 1 , wherein the control unit is configured to overwrite only selected data of which a copy has been generated in the first storage unit in the order in which the selected data has been provided from the data input unit in given data units or file units.
3. The data management apparatus of claim 1 , wherein the control unit is configured to search for in the first storage unit and reproduce data that has not been copied to the second storage unit, and search for in the second storage unit and reproduce data that has been copied to the second storage unit.
4. The data management apparatus of claim 1 , wherein the control unit is configured to sequentially generate the copy the data in given data units or file units as much as the given amount.
5. The data management apparatus of claim 1 , wherein the control unit is configured to generate the copy of the data as much as the given amount at one instance.
6. The data management apparatus of claim 1 , wherein the control unit is configured to convert the data in the first storage unit and perform backup of the converted data to a separate storage medium.
7. The data management apparatus of claim 1 , wherein the control unit is configured to convert the copy in the second storage unit and perform backup of the converted copy to a separate storage medium.
8. The data management apparatus of claim 6 , wherein the separate storage medium is one of a digital versatile disk, a compact disk, an external hard disk, a universal serial bus memory, and a network drive.
9. The data management apparatus of claim 7 , wherein the separate storage medium is one of a digital versatile disk, a compact disk, an external hard disk, a universal serial bus memory, and a network drive.
10. The data management apparatus of claim 1 , wherein the predetermined threshold amount and the given amount are the same.
11. A data management method comprising:
storing data provided from a data input unit in a first storage medium on a real time basis;
if the data stored in the first storage medium is equal to or larger than a predetermined threshold amount that is less than a storage capacity of the first storage, storing a copy of the data in a second storage medium as much as a given amount;
if a capacity of the second storage medium is insufficient to store another copy of another data, overwriting the copy in the order in which the copy has been generated in given data units or file units; and
if there is a user's reproduction request, searching for latest data in the first storage medium and searching for old data in the second storage medium.
12. The data management method of claim 11 , wherein the first or second storage medium is one of a hard disk, a solid state disk (SSD), a digital versatile disk, a compact disk, and a network drive, and a speed of storing the data in the first storage medium is greater than a speed of storing the copy in the second storage medium.
13. The data management method of claim 11 , further comprising overwriting only selected data of which a copy has been generated in the first storage medium in the order in which the selected data is provided from the data input unit in the given data units or file units.
14. The data management method of claim 11 , further comprising converting the data in the first storage medium and performing backup of the converted data to a third storage medium.
15. The data management method of claim 11 , further comprising converting the copy in the second storage medium and performing backup of the converted copy to a fourth storage medium.
16. The data management method of claim 11 , wherein the predetermined threshold amount and the given amount are the same.
17. The data management method of claim 11 , wherein the predetermined threshold amount is less than a storage capacity of the first storage medium.
18. The data management method of claim 11 , wherein the predetermined threshold amount is 50 percent of a storage capacity of the first storage medium.
19. The data management apparatus of claim 1 , wherein the predetermined threshold amount is 50 percent of the storage capacity of the first storage.
20. The data management apparatus of claim 1 , wherein the first or second storage unit is one of a hard disk, a solid state disk (SSD), a digital versatile disk, a compact disk, and a network drive.