System and method for a security system
An apparatus and method is presented for network video management and recording of video signals and video analytics generated by a network of IP-enabled cameras. A set of IP cameras are connected in a LAN to a network video recorder further connected by LAN or WAN to a set of client stations. The client station operates a hybrid program including a web-browser and a native application operating on a computer. The network video recorder operates a media recorder to store video streams from the IP cameras into a media database and further operates a relational database for storing camera configuration data, device drivers, event information and alarms. The network video recorder includes a zero configuration networking discovery service for automatically detecting and downloading default configurations to the cameras. Client stations can stream video directly from IP cameras, receive recorded video streams and query the relational database for cameras and events.
1. A method for booting a network video recorder system including a controller, a processor operatively connected to the controller, and a heater operatively connected to the controller, the method comprising:
pulling down, by the controller, a reset line to the processor;
measuring, by the controller, a first temperature of the network video recorder system;
releasing, by the controller, the reset line when the first temperature of the network video recorder system is not less than a predetermined low temperature threshold; and,
activating, by the controller, the heater when the first temperature of the network video recorder system is less than the predetermined low temperature threshold.
2. The method of claim 1 , wherein the network video recorder system further includes a hardware safety circuit, operatively connected to the controller, and the method further comprises: determining, by the hardware safety circuit, when a second temperature of the network video recorder system is greater than a predetermined high temperature threshold; generating, by the hardware safety circuit, a hardware interrupt when the second temperature is greater than the predetermined high temperature threshold; determining, by the controller, when the hardware interrupt is present; and, removing, by the controller, power to the heater when the hardware interrupt is present.
3. The method of claim 1 , further comprising: measuring, by the controller, a third temperature of the network video recorder system, after the heater has been activated; determining, by the controller, when the third temperature is less than the predetermined low temperature threshold; and, releasing, by the controller, the reset line when the third temperature is not less than the predetermined low temperature threshold.
4. The method of claim 3 , further comprising: determining, by, the controller, when the heater has been in operation for less than a predetermined time threshold; and removing, by the controller, power to the heater when the heater has been in operation for a time greater than the predetermined time threshold.
5. The method of claim 4 , wherein the predetermined time threshold is about 18 minutes.
6. The method of claim 2 , further comprising: measuring, by the controller, a third temperature of the network video recorder system, after the heater has been activated; determining, by the controller, when the third temperature is greater than the predetermined low temperature threshold; and, booting of the network video recorder system when the hardware interrupt is not present and the third temperature is greater than the predetermined low temperature threshold.
7. The method of claim 2 , wherein the predetermined high temperature threshold is about 60 degrees Celsius.
8. The method of claim 1 , wherein the predetermined low temperature threshold is about −10 degrees Celsius.
9. A system for controlling booting of a network video recorder system, the system comprising: a controller; a memory operatively connected to the controller; a processor operatively connected to the controller; a temperature sensor operatively connected to the controller; a set of heaters operatively connected to the controller; and, a set of instructions, resident in the memory, that when executed by the controller cause the controller to: reduce a voltage on a reset line to the processor to prevent the processor from booting; receive a first temperature of the network video recorder system from the temperature sensor; compare the first temperature of the network video recorder system to a predetermined low temperature threshold; activate the set of heaters when the first temperature of the network video recorder system is less than the predetermined low temperature; and, boot the processor when the first temperature of the network video recorder system is equal to or greater than the predetermined low temperature threshold.
10. The system of claim 9 wherein the set of instructions further comprise instructions that when executed further cause the controller to: receive a second temperature of the network video recorder system from the temperature sensor, after the set of heaters has been activated; compare the second temperature of the network video recorder system to the predetermined low temperature; and, boot the processor when the second temperature of the network video recorder system is equal to or greater than the predetermined low temperature threshold.
11. The system of claim 10 , further comprising:
a hardware safety circuit, operatively connected to the controller, for generating a hardware interrupt when a predetermined high temperature threshold is reached in the network video recorder system; and,
the set of instructions further comprise instructions that when executed further cause the controller to:
determine whether the hardware interrupt is present; and,
deactivate the set of heaters when the hardware interrupt is present.
12. The system of claim 11 , wherein the predetermined high temperature threshold is about 60 degrees Celsius.
13. The system of claim 10 , wherein the set of instructions further comprise instructions that when executed further cause the controller to: determine when the set of heaters have been n operation for less than a predetermined time threshold; and, deactivate the set of heaters when the set of heaters has not been in operation for less than the predetermined time threshold.
14. The system of claim 13 , wherein the predetermined time threshold is about 18 minutes.
15. The system of claim 10 wherein the set of instructions further comprise instructions that when executed further cause the controller to: deactivate the set of heaters when the second temperature is equal to or greater than the predetermined low temperature threshold.
16. The system of claim 9 , wherein the predetermined low temperature threshold is about −10 degrees Celsius.