Patent ID: 8024588

Claim:
An electronic apparatus with power saving functionality, comprising: a first signal processing circuit, comprising: a receiver logic, for processing at least a satellite signal generated from a global navigation satellite system (GNSS) to obtain resultant data; and a power saving determination logic, coupled to the receiver logic, for monitoring an operation status of the receiver logic and generating a first control signal according to the operation status, wherein the operation status indicates the positioning accuracy according to the at least one satellite signal; and a second signal processing circuit, coupled to the first signal processing circuit, comprising: a processing logic, for receiving the resultant data from the receiver logic and performing navigation functions with the resultant data; and a power saving trigger logic, coupled to the processing logic, for controlling the processing logic to enter a power saving mode from a normal mode when receiving the first control signal from the power saving determination logic, wherein the processing logic operating in the power saving mode has less power consumption than the processing logic operating in the normal mode.