Multi-Interface Transmission Circuit With Dynamic Signal Selection
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Solution Overview
Problem
Electronic apparatuses often have devices from various vendors with different interfaces, making it challenging to achieve compatibility and efficient data exchange.
Innovation Solution
A transmission device is designed with a first selector, a second selector, a first control signal generator, and drivers to select and output signals and control voltages, allowing for various interfaces and operation modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transmission device uses fixed interface configuration, then device complexity is reduced, but adaptability to different vendor devices with different interfaces deteriorates
Solution Approach 1:
The transmission device is designed with multiple selectors (first selector, second selector) and control signal generators that enable a single device to support multiple interface types (differential signal interface, three-voltage-level signal interface). This multi-functionality allows the device to adapt to different vendor interfaces without requiring separate dedicated hardware for each interface type.
Solution Approach 2:
The interface configuration is made dynamic through the use of control signal generators that can switch between different signal modes. The first selector and second selector are controlled by generated control signals to dynamically select between differential signaling and three-voltage-level signaling, allowing the device to adapt its interface behavior based on the connected device type.
2Adaptability or versatility
If a transmission device supports multiple interfaces, then adaptability to different devices is improved, but device complexity increases due to additional selectors and control circuits
Solution Approach 1:
Multiple interface functions are merged into a single transmission device structure. The first selector and second selector are integrated within the same device, along with the control signal generator, creating a unified multi-functional interface unit that reduces the need for separate interface circuits.
Solution Approach 2:
The control signal generator acts as an intermediary that manages the complexity of supporting multiple interfaces. It generates the necessary control signals that coordinate the operation of the first selector and second selector, thereby mediating between the multiple interface requirements and the underlying hardware components.
3Productivity
If voltage levels are increased to three levels, then data exchange capability is improved, but energy consumption increases
Solution Approach 1:
The signal transmission parameter is changed from two voltage levels to three voltage levels. This parameter change enables the transmission device to encode more information per signal transition, thereby increasing data exchange capability. The three-voltage-level interface allows for additional signal states that can represent more data values.
Data Source
AI summary
A transmission device of the disclosure includes a first selector configured to select one of a first signal and a second signal, and output the selected signal; a second selector configured to select one of an inversion signal of the first signal, the second signal, and an inversion signal of the second signal, and output the selected signal; a first control signal generator configured to generate a first control signal, a second control signal, and a third control signal, based on the first signal, the second signal, and a third signal; a first driver configured to set a voltage of a first output terminal, based on an output signal of the first selector and the first control signal; and a second driver configured to set a voltage of a second output terminal, based on an output signal of the second selector and the second control signal.