Decoder Turn-Off Buffering for Stable Chip Power
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Solution Overview
Problem
Optical transmission systems face challenges in maintaining stable power consumption, as the working point of chips in these systems fluctuates between stable and extreme states, leading to excessive power consumption fluctuations that can damage the chips.
Innovation Solution
A decoding system with a decoding controller is introduced, which includes two decoders and a controller that determines a turn-off probability based on previous decoding success rates and intervals, generating an indication to prevent immediate turn-off and buffer power consumption fluctuations, thereby stabilizing the power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the decoder immediately turns off upon successful decoding, then power consumption is reduced, but rapid power consumption fluctuations occur that can damage the chip
Solution Approach 1:
The patent introduces a buffer mechanism that cushions the immediate turn-off action. When a decoder successfully decodes a code block, instead of immediately turning off, it waits for a determined probability (based on δp) before turning off. This buffering action prevents rapid power consumption fluctuations that would otherwise damage the chip, while still achieving power savings during stable operation periods.
Solution Approach 2:
The patent makes the turn-off decision dynamic by introducing a probability-based mechanism. The turn-off probability is adjusted based on the channel status and a pre-determined interval δp. This dynamic approach allows the system to adapt between immediate turn-off (when safe) and delayed turn-off (when channel status is fluctuating), optimizing both power consumption and chip reliability in real-time.
2Ease of operation
If the decoder works at a long-term stable working point, then operation is simple, but power consumption fluctuates excessively when channel status changes
Solution Approach 1:
The patent implements a feedback mechanism where the decoder continuously monitors channel status and adjusts its working point accordingly. When channel status fluctuates, the system receives feedback about the changing conditions and dynamically adjusts the working point between stable and extreme states. This feedback loop maintains operation simplicity by automating the adjustment process while ensuring power consumption stability through adaptive working point selection.
3Measurement precision
If multiple decoders are used in sequence, then decoding precision is improved, but system complexity increases
Solution Approach 1:
The patent divides the decoding task into multiple sequential decoders, each handling specific code blocks. This segmentation allows the system to improve decoding precision by having multiple decoding opportunities while managing complexity through modular design. Each decoder operates independently with clear input-output relationships, and the control mechanism coordinates them efficiently, preventing exponential complexity growth despite having multiple decoders.
Data Source
AI summary
A decoding system, a decoding controller, and a decoding control method are provided. In the decoding system, a decoding controller is disposed between two adjacent decoders. The decoding controller determines whether to perform turn-off based on a non-turn-off indication received by a previous-stage decoder, a turn-off indication output by the previous-stage decoder, and historical turn-off probability statistics. This is equivalent to adding a buffer zone between the two adjacent decoders.