Patent ID: 9019540
Filing Date: 2015-04-28
Classification: H04N

Abstract:
1. A network controller that can be shifted from a normal state to a sleep state, comprising: a communication portion capable of communicating with another network device via a network; a disconnection portion configured to temporarily disconnect communication from the communication portion to the other network device when a sleep signal instructing a shift from the normal state to the sleep state is received; a change portion configured to change a communication speed of the disconnected communication from the communication portion to the other network device, to a communication speed lower than a communication speed in the normal state; and a re-linking portion configured to cause the communication portion to communicate with the other network device at the changed communication speed, wherein the disconnection portion temporarily disconnects the communication from the communication portion to the other network device when a sleep cancellation signal instructing a cancellation of the sleep state is received, the change portion changes the communication speed from the communication portion to the other network device, to a communication speed higher than a communication speed in the sleep state, and the re-linking portion causes the communication portion to communicate with the other network device at the changed communication speed.