Network camera using hierarchical event detection and data determination

1. A network camera, comprising:

an event detector configured to detect an event;

an image sensor configured to capture an image in response to the detected event;

a storage configured to store image data of the captured image;

a transceiver configured to transmit and receive the image data over a network;

a controller configured to control the event detector, the image sensor, the storage, and the transceiver, to select a single network mode from among a plurality of network modes based on whether power is supplied from an outside, and to configure the network based on the selected network mode; and

a power source configured to supply the power to the event detector, the image sensor, the storage, the transceiver, and the controller,

wherein the transceiver comprises a first sub-transceiver for a low-power and low-speed network and a second sub-transceiver for a high-power and high-speed network,

wherein the first sub-transceiver transmits a beacon message indicating a state of the network camera to at least one of neighboring network camera,

wherein the beacon message includes information on a residual battery amount of the at least one of neighboring network camera,

wherein the controller selectively adopts a path based on the information on the residual battery amount of the at least one of neighboring network camera.

2. The network camera of claim 1 , wherein the controller is configured to select a single network mode from among a low-power and low-speed network mode and a high-power and high-speed network mode based on whether the power is supplied from the outside, and to configure the network based on the selected network mode.

3. The network camera of claim 1 , wherein the controller is configured to use a multichannel in response to an increase in an amount of data transmitted and received.

4. The network camera of claim 1 , wherein the controller is configured to transmit the image data to a sink or a gateway through a multipath.

5. The network camera of claim 1 , wherein the controller is configured to maintain a low-power and low-speed network mode while the power is not supplied to a streetlight and to switch from the low-power and low-speed network mode to a high-power and high-speed network mode when the image data is to be transmitted.

6. The network camera of claim 1 , wherein the power source comprises a power supply module configured to be directly supplied with the power from a wire lead in a streetlight and a battery module configured to store the power.