Combo Communication Terminal Switch Unit SIM Sharing
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Solution Overview
Problem
Existing combo communication terminals face instability in SIM card sharing due to wireless communication limitations and inability to use SIM cards when the other terminal is in a turn-off or sleep mode.
Innovation Solution
A combo communication terminal design with a switch unit that allows direct port coupling between the first and second communication terminals, enabling the first terminal to use the SIM card even when the second terminal is in a turn-off or sleep mode by controlling the switch unit with control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless communication (Bluetooth) is used to share SIM card between terminals, then the combo communication terminal can be separated into independent devices, but the communication stability deteriorates due to limited coverage and wireless instability
Solution Approach 1:
The patent introduces a switch unit as an intermediary component that physically connects the SIM card to either the first or second communication terminal through wired ports. This mediator resolves the contradiction by providing a stable physical connection path while allowing the terminals to remain separable and independently operable.
Solution Approach 2:
The switch unit is designed to be dynamically controllable, allowing the SIM card connection to be switched between the first and second terminals based on operational needs. This dynamic switching capability maintains adaptability while ensuring stable communication through physical wired connections rather than fixed wiring.
2Loss of energy
If the second communication terminal is in turn-off or sleep mode, then power consumption is reduced, but the first terminal cannot use the SIM card of the second terminal for communication
Solution Approach 1:
The patent extracts the SIM card interface and switch unit from the second terminal's main processing system, allowing the SIM card to remain electrically connected and accessible to the first terminal even when the second terminal is powered down. This extraction enables independent SIM card usage by the first terminal without requiring the second terminal to be active.
Solution Approach 2:
The communication system is segmented into independent functional components: the SIM card interface, the switch unit, and the terminal processing units. This segmentation allows the SIM card functionality to be independently accessed by either terminal without requiring both terminals to be simultaneously powered on, thus reducing overall power consumption while maintaining adaptability.
3Reliability
If direct port coupling is implemented through switch unit, then communication stability is improved, but the device structure becomes more complex
Solution Approach 1:
The switch unit is designed as a multi-functional component that serves multiple purposes: it provides wired communication connectivity, enables SIM card sharing between terminals, and allows dynamic switching of connection paths. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in overall device complexity while achieving stable wired communication.
Data Source
AI summary
A combo communication terminal has a first communication terminal and a second communication terminal. A switch unit of the second communication terminal has a first end, a second end, a third end and a control end. The control end selectively couples the first end to the second end or to the third end according to a control signal. When a communication link between the first communication terminal and the second communication terminal has been established, a second processing unit of the second communication terminal generates and transmits a first control signal to the control end, such that a first processing unit of the first communication terminal is coupled to a first subscriber identity unit of the second communication terminal via the first port, so that the first communication terminal uses the first subscriber identity unit to perform tasks of communication.