3.4.2.3. Signature analysis
Signature analysis is the most popular response compaction technique used today. The compaction scheme, based on cyclic redundancy checking (CRC) [Peterson 1972], was first developed in [Benowitz 1975]. Hewlett-Packard commercialized the first logic analyzer, called HP 5004A Signature Analyzer, based on the scheme and referred to it as signature analysis [Frohwerk 1977].
In this subsection, we will discuss two signature analysis schemes: (1) serial signature analysis for compacting responses from a CUT having a single output and (2) parallel signature analysis for compacting responses from a CUT having multiple outputs.
3.4.2.3.1. Serial Signature Analysis
Consider the n-stage single-input signature register
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