ZigBee Hands-Free Display Reduces Mobile Power Consumption
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Solution Overview
Problem
Existing mobile phone hands-free apparatus based on Bluetooth technology consume high power due to complex signal processing and hardware configuration, leading to increased battery replacement rates.
Innovation Solution
A hands-free function for mobile communication terminals using the ZigBee protocol, which includes a mobile communication terminal, a ZigBee coordinator, and a ZigBee device for transmitting and receiving voice and display signals, employing a serial bus interface and RF transmission/reception units to provide a low-power, low-complexity solution for hands-free operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Bluetooth standard is used for hands-free apparatus, then hands-free function is provided, but power consumption increases and battery replacement rate increases
Solution Approach 1:
The system is divided into two separate devices: a mobile communication terminal that handles voice communication via Bluetooth, and a ZigBee-based display device that handles display functions. This segmentation allows the power-intensive Bluetooth radio to remain in the mobile terminal while the portable display device uses low-power ZigBee for wireless communication, thus reducing overall power consumption in the portable device.
Solution Approach 2:
The patent introduces ZigBee as an intermediary communication protocol between the mobile terminal and the display device. Instead of using Bluetooth in the portable display device (which would consume high power), ZigBee serves as a low-power intermediary for wireless data transmission, while Bluetooth is retained only in the mobile terminal for voice communication.
2Ease of operation
If Bluetooth standard is used for hands-free apparatus, then hands-free function is provided, but hardware complexity increases
Solution Approach 1:
The system separates the complex Bluetooth hardware requirements to the mobile terminal (which already has Bluetooth capability) and uses a simpler ZigBee implementation in the portable display device. This segmentation reduces the hardware complexity burden on the portable device while maintaining hands-free functionality.
Solution Approach 2:
The patent uses ZigBee as a simplified alternative to Bluetooth for the display device's wireless communication needs. Instead of implementing full Bluetooth functionality (which requires complex hardware), the system copies only the essential wireless communication capability using the simpler ZigBee protocol, thereby reducing hardware complexity.
Data Source
AI summary
The hands-free function provision apparatus for use in the mobile communication terminal using the ZigBee protocol includes: a mobile communication terminal for performing transmission/reception of a voice signal via a base station; a ZigBee coordinator for transmitting or receiving a predetermined display signal and a call control signal for establishing a call connection state to/from the mobile communication terminal, modulating or demodulating the predetermined display signal, the call control signal, and the voice signal using the ZigBee protocol; and a ZigBee device for performing wireless transmission/reception with the ZigBee coordinator by modulating or demodulating the predetermined display signal, the call control signal, and the voice signal using the ZigBee protocol, and visually providing the predetermined display signal.