为降低比特率，本文提出四种有效的BTC算法，以降低对每个图像块的两个量化电平和位平面编码所需的比特数。

In order to reduce the bit rate, on the one hand, simple look-up-table methods are presented to code the BTC quantized data of a block.

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由偏差和测量时间有限而引起的总误差与量化输入信号限幅电平有关。

The total error due to finite observation and bias is dependent on the limited level of the quantized input signal.

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讨论数字射频存贮器（DRFM）多比特相位量化的原理、实现方法和影响寄生电平的因素。

This paper discusses the principle, the complement met hod of DRFM and the factors of influence on the parasitic level.

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