Multi-Level Differential Interface for Higher Data Rates
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Solution Overview
Problem
Current digital interfaces in wireless communication devices face challenges in meeting the increasing demand for higher data transmission rates, as they require significant increases in the number of pins and transmission lines, which is inefficient and not scalable.
Innovation Solution
A digital interface system that uses a set of voltage levels transmitted by a first circuit and received by a second circuit, generating voltage differential levels based on these levels, allowing for increased bandwidth and data throughput through a reduced number of pins, enabling efficient data transmission across the interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of pins and transmission lines is significantly increased to meet higher data transmission rates, then the bandwidth and data throughput are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent changes the voltage parameter by transmitting multiple distinct voltage levels (e.g., -0.8V, -0.4V, 0V, +0.4V, +0.8V) instead of traditional binary voltage levels. This allows each pin to encode multiple bits of data simultaneously, achieving higher data rates without increasing the number of pins. The receiver distinguishes these levels to decode the transmitted information
Solution Approach 2:
The patent transitions from binary (2-state) signaling to multi-level voltage signaling, adding a new dimension to the transmission capability. By utilizing voltage magnitude as an additional encoding dimension beyond simple presence/absence of signal, the system achieves increased bandwidth while maintaining the same physical interface complexity
2Productivity
If the number of pins and transmission lines is significantly increased to meet higher data transmission rates, then the bandwidth and data throughput are improved, but the ease of manufacture and scalability worsen
Solution Approach 1:
The patent makes existing pins multi-functional by enabling them to transmit multiple voltage levels that represent different data combinations. A single pin can convey information that previously required multiple pins, making the interface more versatile and scalable without physical expansion. The same hardware infrastructure supports both traditional and enhanced transmission modes
3Productivity
If multiple voltage levels are transmitted through existing pins, then the data rate is increased without increasing pin count, but the measurement precision and signal detection difficulty increase
Solution Approach 1:
The patent incorporates error correction coding and validation mechanisms that prepare for and cushion against potential detection errors. By anticipating signal degradation or noise interference, the system includes redundant information and verification protocols that maintain measurement precision even when detecting multiple closely-spaced voltage levels
Solution Approach 2:
The system employs feedback mechanisms where the receiver validates received voltage levels and requests retransmission or correction when detection uncertainty arises. This feedback loop ensures high measurement precision by actively managing and correcting detection errors rather than relying solely on perfect initial detection
Data Source
AI summary
A digital interface system that includes a first circuit that transmits a set of voltage levels and a second circuit that receives the set of voltage levels and generates a set of voltage differential levels based on the set of voltage levels. The set of voltage differential levels corresponds to a first predetermined value. Each of the voltage levels is different from another of the voltage levels.