该文探讨了在不可靠硬件上编码视频时可能导致的软错误问题，这些错误会在解码过程中引入显著的图像失真。现代系统在越来越苛刻的条件下运行，如更小的特征尺寸和更低的工作电压，增加了视频编码硬件出现软错误的可能性。对于能源有限的电池驱动系统来说，这是一个特别值得关注的问题。提出的并行独立签名处理设计能在视频编码硬件中实现错误检测和缓解，允许在硬件不可靠时优雅地降低视频质量。通过防止编码错误的传播，减少解码序列中的瞬时失真，能够在视频编码系统存在错误时恢复视频质量。与传统方法相比，该设计允许单个错误事件仅导致解码序列中的单一瞬时失真，避免了信号的灾难性失效。
摘要：
Soft errors resulting from encoding video sequences on unreliable hardware can create significant artifacts in decoded video sequences, contributing to extreme video quality degradation. Modern systems are required to operate under increasingly challenging constraints, including smaller feature sizes and lower operating voltage, increasing the likelihood of soft errors in the video encoding hardware. These conditions are of particular concern for energy-limited battery-operated systems since they may be required to operate in nonideal environments and/or continue operating with a practically depleted energy source. The proposed parallel independent signature processing design performs error detection and mitigation in video encoding hardware, enabling a graceful degradation of quality when encoding by using unreliable hardware. The effects of soft errors are minimized by preventing the error propagation normally associated with errors in encoded video sequences. This allows for the recovery of quality when errors are present in the video encoding system. Conventional video encoding techniques are designed to handle worst case error rates by increasing gate sizes and/or increasing the operating voltage of the system. Such designs have error-rate limits, and when these limits are reached, the systems tend to fail catastrophically, resulting in an unrecoverable signal. The proposed design allows for single upset events to translate into single transient artifacts in a decoded video sequence.
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