Coded data generation or conversion – Digital pattern reading type converter – Incremental
Reexamination Certificate
2005-11-29
2005-11-29
Young, Brian (Department: 2819)
Coded data generation or conversion
Digital pattern reading type converter
Incremental
Reexamination Certificate
active
06970108
ABSTRACT:
An encoder interface device that permits automatic discovery of an unknown encoder that is physically connected to the interface device, so as to enable correct operation. The device permits discovery of characteristics of an unknown encoder including the primary quadrature A and B channels, the index channel, and the active state of the index channel. Once discovered and configured, the device indicates the index position of the encoder with an accuracy of a single encoder count. The device also supports “wide” index pulses, in which the index channel is active for more than seven consecutive encoder counts. The device also provides for the discovery, configuration, and position latching with single-encoder-count accuracy for encoders having index pulses of almost arbitrary width.
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Fish & Richardson P.C.
Young Brian
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