Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Reexamination Certificate
2006-08-22
2009-08-18
Lam, Tuan (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
C327S063000, C327S072000, C327S073000
Reexamination Certificate
active
07576570
ABSTRACT:
Precision amplitude detection circuitry without pattern dependencies is provided that includes rectifier circuitry to output a rectified voltage signal and delay circuitry to send one or more delayed or phase-shifted versions of a differential signal input to the rectifier circuitry. The delayed versions of the differential signal input may be delayed in order to reduce or eliminate the dips in the input seen by the rectifier. This may help correct for low rectified voltage levels. The signal amplitude detection circuitry of the present invention may be incorporated on the input pin of any programmable logic resource and may be included in communication circuitry of a PLD. The precision amplitude detection circuitry may operate in the Gbps (gigabit per second) range.
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Hoang Tim Tri
Maangat Simardeep
Shumarayev Sergey
Tran Thungoc M.
Wong Wilson
Altera Corporation
Lam Tuan
Mack Brian E.
Nguyen Hiep
Ropes & Gray LLP
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