Dual-Mode Mobile Terminal Interface Simplification via Analog Switches
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dual-mode digital mobile communication terminals enabling CDMA and GSM face issues such as multiple interfaces for user and debugging, repeated function definitions, limited interface utilization, poor voice switching between modes, and hardware compatibility challenges between dual-mode dual-standby and single-standby machines.
Innovation Solution
A dual-mode digital mobile communication terminal design incorporating a USB connector, analog switches, and an application processing module to simplify interfaces, enable seamless voice switching, and achieve hardware compatibility by controlling CDMA and GSM wireless modules through UART and USB interfaces, and using analog switches to manage module connections and debugging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate interfaces are provided for user use and system debugging/downloading, then each interface can be optimized for its specific function, but the number of interfaces increases and interface utilization is limited
Solution Approach 1:
The patent implements a universal interface design where the USB interface can serve multiple functions including user data transmission, system debugging, program downloading, and radio calibration. The analog switch mechanism enables the same physical interface to be dynamically configured for different purposes based on control signals from the application processing module, eliminating the need for separate dedicated interfaces for each function.
Solution Approach 2:
The patent introduces dynamic interface configuration through analog switches that can change the connection state of the USB interface based on operational requirements. The interface transitions from static dedicated connections to dynamic multi-functional connections, allowing the system to adapt the interface configuration in real-time without physical reconfiguration.
2Device complexity
If the debugging and downloading interface is removed during mass production, then the device can be simplified, but re-welding is required during after-sale service which causes inconvenience
Solution Approach 1:
The patent preserves the debugging and downloading interface functionality during mass production by integrating it into the universal USB interface configuration. The analog switch is pre-configured to allow the USB interface to be activated for debugging modes when needed, eliminating the need for physical re-welding during after-sale service while maintaining interface simplification during production.
3Adaptability or versatility
If repeated function definitions are used in interfaces, then each function can be independently defined, but interface utilization is reduced and limited interfaces cannot perform all required operations
Solution Approach 1:
The patent creates a universal interface that can perform multiple functions including program downloading, debugging information printing, radio calibration, and data transmission through a single USB connector. The analog switch mechanism enables dynamic routing of signals to different functional blocks, allowing one interface to replace multiple dedicated interfaces while maintaining full functional capability.
4Reliability
If manual switching is required for voice applications between different modes, then the system can maintain stability in each mode, but the switching process is not seamless and causes delay
Solution Approach 1:
The patent implements dynamic voice switching between CDMA and GSM modes through automated control by the application processing module. The system monitors the operational state and automatically switches between modes without requiring manual user intervention, eliminating switching delay while maintaining the stability of each communication mode through controlled analog switch transitions.
Data Source
AI summary
A dual-mode digital mobile communication terminal enabling Code Division Multiple Access (CDMA) and Global System for Mobile Communications (GSM) is disclosed, in which a processing module functions as a core; both CDMA and GSM wireless modules can be controlled; functions of high performance Bluetooth, camera, and FM receiver, etc. can be expanded; program downloading, debugging information printing and radio calibration, etc. can be implemented in various application states under the two wireless standards, through a five-pin micro USB interface and an eight-pin micro USB interface which are reserved for users, and an optimal arrangement of a series of internal analog switches, use of the interface resources may be maximized and the interfaces may be simplified; further, in the disclosure, various voice application states, such as handheld, earphone, hand-free and bluetooth, can be switched from one to another seamlessly and smoothly; and the hardware compatibility of a dual-mode dual-standby machine enabling CDMA and GSM with a dual-mode single-standby machine enabling CDMA and GSM can be achieved.