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Computationally very expensive dynamic-programming matching of data sequences has been directly implemented in a fully-parallel-architecture VLSI chip. The circuit operates as digital logic in the signal domain, while analog processing is carried out in the time domain based on the delay-encoding-logic scheme. As a result, a high-speed low-power best-match-sequence search has been established with a small chip area. The typical matching time of 80 ns with the power dissipation of 2 mW has been demonstrated with fabricated prototype chips.
Date of Publication: July 2005