Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2007-03-20
2008-08-26
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S037000, C327S093000, C333S08100R
Reexamination Certificate
active
07417462
ABSTRACT:
A programmable logic device (“PLD”) includes circuitry for optionally and variably modifying characteristics of an input signal in any of several respects. Examples of such modifications include AC coupling the signal into the PLD, low pass filtering the signal (with selectable low-pass filter corner frequency), shifting the common voltage of the input signal, and/or subjecting the input signal to a selectable amount of attenuation.
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“Choosing AC-Coupling Capacitors,” Application Note HFAN-1.1, Rev. 0; Sep. 2000, Maxim Integrated Products, Sep. 28, 2000, three pages.
Hoang Tim Tri
Shumarayev Sergey
Tran Thungoc M.
Wong Wilson
Altera Corporation
Barnie Rexford
Jackson Robert R.
Ropes & Gray LLP
White Dylan
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