Data storage device and method for application-defined data retrieval in surveillance systems
A data storage device and method for application-defined data retrieval in surveillance systems are provided. In one embodiment, a data storage device is provided comprising a memory and a controller. The controller is configured to store, in the memory, a stream that combines data from a plurality of receivers; receive a request from a host for data generated by a selected receiver; extract, from the stored stream, the data generated by the selected receiver; and send the extracted data to the host. Other embodiments are provided.
1. A data storage device comprising:
a memory; and
a controller configured to:
receive video data from a plurality of cameras, wherein each camera of the plurality of cameras is associated with a different identifier;
store, in the memory, a stream that combines the video data from the plurality of cameras;
receive a request from a host for video data generated by a selected camera, wherein the request from the host comprises an identifier for the selected camera;
extract, from the stored stream, the video data generated by the selected camera; and
send the extracted video data to the host.
2. The data storage device of claim 1 , wherein the identifier comprises a packet identifier (PID).
3. The data storage device of claim 1 , wherein the controller is further configured to create a program association table for the extracted video data.
4. The data storage device of claim 1 , wherein the controller is further configured to send only intra-coded picture frames (I-frames) from the extracted video data to the host.
5. The data storage device of claim 1 , wherein the controller is further configured to:
receive a request from the host for video data generated by another selected camera;
extract the video data generated by the another selected camera; and
send the extracted video data generated by the another selected camera to the host.
6. The data storage device of claim 5 , wherein the video data generated by the another selected camera is extracted from the stream.
7. The data storage device of claim 5 , wherein the video data generated by the another selected camera extracted from a different stream.
8. The data storage device of claim 5 , wherein the extracted video data generated by the selected camera and the extracted video data generated by the another selected camera are combined into a transport stream.
9. The data storage device of claim 1 , wherein the controller is further configured to receive the request via an application-specific storage interface.
10. The data storage device of claim 1 , wherein the comprises a three-dimensional memory.
11. The data storage device of claim 1 , wherein the controller is further configured to create a program mapping table for the extracted video data.
12. A method comprising:
performing the following in a data storage device comprising a memory:
receiving video data from a plurality of cameras, wherein each camera of the plurality of cameras is associated with a different identifier;
storing, in the memory, a stream that combines the video data from the plurality of cameras;
receiving a request from a host for video data generated by a selected camera wherein the request from the host comprises an identifier for the selected camera;
segregating the video data generated by the selected camera out of the stream; and
sending the segregated video data to the host.
13. The method of claim 12 , further comprising sending only intra-coded picture frames (I-frames) from the extracted video data to the host.
14. The method of claim 12 , further comprising:
receiving a request from the host for video data generated by another selected camera;
segregating the video data generated by the another selected camera from the stream; and
sending the segregated video data generated by the another selected camera to the host.
15. The method of claim 14 , further comprising creating a transport stream with the segregated video data generated by the selected camera and the segregated video data generated by the another selected camera.
16. The method of claim 12 , wherein the identifier comprises a packet identifier (PID).
17. The method of claim 12 , further comprising:
receiving a request from the host for video data generated by another selected camera;
segregating the video data generated by the another selected camera from another stream stored in the memory; and
sending the segregated video data generated by the another selected camera to the host.
18. The method of claim 17 , further comprising creating a transport stream with the segregated video data generated by the selected camera and the segregated video data generated by the another selected camera.
19. The method of claim 12 , wherein the request is received via an application-specific storage interface.
20. A data storage device comprising:
a memory;
means for storing, in the memory, a stream that combines video data from a plurality of cameras;
means for receiving a request from a host for video data generated by a selected camera;
means for extracting, from the stored stream, the video data generated by the selected camera; and
means for sending the extracted video data to the host.