Display Interface Device Staggered Clock Edge Transmission
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Solution Overview
Problem
Existing display interface technologies face challenges in increasing display information transmission efficiency and reducing power consumption and electromagnetic interference (EMI), primarily due to difficulties in adjusting internal clock timing caused by clock skew, leading to data loss and increased overhead in packet transmission units, and redundant clock edge transmission across multiple channels.
Innovation Solution
The display interface device and method involve transmitting clock edge information at different timings for each channel, using a reception part to detect and generate delay-compensated internal clock signals by performing logical operations on clock edges from neighboring channels, allowing for longer transmission units without data loss and reducing EMI by dispersing clock edges across multiple channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission unit length is increased to improve transmission efficiency, then the overhead ratio increases and power consumption increases
Solution Approach 1:
The patent changes the parameter of clock edge transmission timing by introducing a time offset between different channels. This allows longer transmission units to be used without proportionally increasing overhead, as clock edges are no longer transmitted simultaneously across all channels but are staggered in time, thereby reducing peak power consumption while maintaining higher transmission efficiency.
2Ease of operation
If multiple channels transmit clock edge information at the same timing to synchronize data transmission, then transmission coordination is simplified but EMI increases
Solution Approach 1:
The patent applies periodic action by transmitting clock edge information in a staggered periodic manner across different channels rather than simultaneously. Each channel transmits its clock edges at offset intervals, which distributes the electromagnetic energy over time and reduces peak EMI while maintaining synchronization through the periodic structure of the offset timing.
3Stability of the object's composition
If clock edge information is transmitted simultaneously across multiple channels to maintain synchronization, then timing alignment is easier but clock skew problems worsen
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-setting time offsets for clock edge transmission on different channels. This preliminary timing adjustment compensates for expected clock skew effects before data transmission begins, ensuring that clock edges arrive at the receiver in a synchronized manner despite transmission delays, thereby preventing data loss while maintaining timing alignment.
Data Source
AI summary
The present disclosure relates to a display interface device which can increase display information transmission efficiency and reduce power consumption and EMI, in which a transmission part transmits clock edge information included in a data packet of each channel at a different timing from clock edge information included in data packets of other channels. A reception part detects a clock edge of each channel from the data packet transmitted through each channel, generates an internal clock signal of each channel, synchronized with the detected clock edge, corrects a delay of each channel depending on a result of a logical operation performed on a delayed clock edge of a channel and a clock edge of another channel to further generate an internal clock signal of each channel, and restores the display information from the data packet of each channel using the internal clock signal of each channel.