Mobile Terminal Navigation Engine Power Management
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Solution Overview
Problem
Existing mobile terminal navigation devices fail to reduce power consumption effectively, especially when generating navigation information, and often disable GPS functionality during trips, leading to unavailable navigation functions during certain periods.
Innovation Solution
A communication device with a processor that calculates available electricity and determines whether to use its own navigation engine or a connected device's engine to generate navigation information, optimizing power usage by switching between engines based on available energy and communication methods (Wi-Fi or 3G) to reduce consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the navigation engine in the mobile terminal is constantly operated to generate navigation information, then the navigation function is always available, but the power consumption is high
Solution Approach 1:
The patent merges the navigation engine from the mobile terminal with a navigation engine in another device (such as a server or external device). The mobile terminal transmits necessary information to the other device, which generates navigation information using its navigation engine, and returns the generated information to the mobile terminal. This combines the computational resources of both devices to reduce power consumption in the mobile terminal while maintaining navigation functionality.
Solution Approach 2:
The patent introduces another device (server or external device) as an intermediary that performs the navigation information generation task. The mobile terminal acts as a client that requests and receives navigation information from this intermediary, which has its own navigation engine. This mediator approach allows the mobile terminal to offload power-intensive operations while maintaining access to navigation functions.
2Use of energy by moving object
If the GPS engine is turned OFF from departure station to arrival station to save power, then power consumption is reduced, but the navigation function becomes unavailable during this period
Solution Approach 1:
The patent implements preliminary action by having the mobile terminal transmit information (such as position, destination, and route) to another device before the GPS engine is turned OFF. The other device uses this pre-transmitted information to generate navigation information during the period when the GPS engine is off. This preliminary data transmission enables navigation functionality to be maintained without continuous GPS operation.
Solution Approach 2:
The patent segments the navigation information generation process into two parts: (1) the mobile terminal collects and transmits necessary input data to another device, and (2) the other device generates the navigation information using its navigation engine. This segmentation allows the mobile terminal to minimize its own power-intensive operations while still obtaining navigation information.
3Adaptability or versatility
If the mobile terminal generates navigation information using its own navigation engine, then the navigation information can be generated independently, but the power consumption increases
Solution Approach 1:
The patent implements a dynamic approach where the mobile terminal can switch between two modes: (1) generating navigation information independently using its own navigation engine when necessary, and (2) transmitting information to another device for navigation information generation when power saving is needed. This dynamic adaptability allows the system to balance independence with power consumption based on current conditions.
Data Source
AI summary
A communication device includes a memory and a processor coupled to the memory. The processor executes a process including calculating an amount of electricity available in a second device while a first communication unit and a second communication unit with each other, determining a first generation unit to be a generation unit, when the amount of electricity thus calculated is smaller than a predetermined amount, out of the first generation unit that generates navigation information based on information acquired by an information acquisition unit and a second generation unit, and controlling the second device so as to stop supplying power to the second generation unit and to output the navigation information generated by the first generation unit when the first generation unit is determined.