Signal Receiving Circuit Shared Input Terminals Multiple Standards
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Solution Overview
Problem
High-speed digital video/audio transmission interface standards, such as HDMI, DisplayPort, and UDI, require separate pins and hardware to process varied input signals, leading to increased pin count and hardware area, which is inefficient and costly.
Innovation Solution
A signal receiving circuit with shared input terminals and a processing module that can receive and process signals from multiple digital video/audio transmission interface standards, using a control circuit to determine the correct signal processing mode and output, thereby reducing the need for multiple sets of pins and hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate pins and hardware are provided for every digital transmission interface, then each interface can be supported independently, but the pin number increases and hardware area expands
Solution Approach 1:
The patent implements a universal input interface that can receive signals from multiple digital transmission interfaces (HDMI, DisplayPort, UDI) using the same physical pins. The interface circuit includes shared input terminals that accept differential signals from any of these standards, eliminating the need for separate pin sets for each interface type.
Solution Approach 2:
The patent employs dynamic configuration where the interface circuit can be programmed or configured at runtime to support different transmission interface standards. The control circuit dynamically adjusts the reception mode based on which interface standard is detected, allowing the same hardware to adapt its behavior for HDMI, DisplayPort, or UDI signals as needed.
2Reliability
If separate hardware is provided for each digital transmission interface, then signal processing can be interface-specific, but the hardware area increases
Solution Approach 1:
The patent merges the signal processing functionality for multiple interface standards into a single interface circuit. The processing module combines the reception, decoding, and processing functions for HDMI, DisplayPort, and UDI signals into one unified hardware block, reducing the total hardware area while maintaining interface-specific processing capabilities through software or control logic configuration.
3Adaptability or versatility
If multiple sets of input terminals are provided for different interfaces, then each interface can be received independently, but the pin count increases
Solution Approach 1:
The input interface is designed as a universal receptacle that accepts differential signals from multiple interface standards using the same physical pins. The same set of input terminals can be configured to receive HDMI, DisplayPort, or UDI signals, eliminating the need for separate pin sets for each standard.
Solution Approach 2:
The patent changes the operational parameters of the input interface based on the detected interface standard. By adjusting reception parameters such as signal voltage levels, clock frequencies, and protocol handling, the same physical pins can accommodate different interface standards without requiring separate hardware pins for each standard.
Data Source
AI summary
The invention provides a signal receiving circuit applied to multiple digital video/audio transmission interface standards. The signal receiving circuit includes at least an input interface for receiving an input signal, and at least an interface circuit. The input interface includes a set of shared input terminals, a set of first separate input terminals for receiving an input signal corresponding to a first transmission specification with the set of shared input terminals, and a set of second separate input terminals for receiving an input signal corresponding to a second transmission specification with the set of shared input terminals. The interface circuit includes a control circuit coupled to the input interface for supplying a control signal, and a processing module coupled to the input interface and the control circuit for processing the input signal according to the control signal to generate an output signal.