High speed correlation circuit and method
Patent 4498141 Issued on February 5, 1985. Estimated Expiration Date: 
February 5, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 5, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3648237 3818348 Method of obtaining correlation between certain selected samples of a sequence Digital recognition circuits Digital data correlator Patent #: 4412301 InventorApplicationNo. 06/342257 filed on 01/25/1982US Classes:708/212, Detecting particular sequence of bits340/146.2, DIGITAL COMPARATOR SYSTEMS708/5, Correlation, convolution, or transformation708/813Correlation or convolutionExaminersPrimary: Smith, JerryAssistant: Huang, Karl Attorney, Agent or FirmInternational ClassesG06F 17/15 (20060101)G11B 27/30 (20060101) AbstractHigh speed serial data bits of a data stream are received, stored, shifted and compared in parallel to bit contents of a known correlation word. For each bit match a known signal change is provided on a common terminal. High speed current or voltage changes on the common terminal are proportional to the number of matching bits and are monitored to detect presence of the correlation word in the received data stream. The circuit has minimum number of components and built-in temperature compensation.Other References
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