Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2006-06-05
2011-10-18
Bullock, Jr., Lewis (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
C708S501000, C708S301000, C708S313000, C326S047000, C326S038000
Reexamination Certificate
active
08041759
ABSTRACT:
A specialized processing block for a programmable logic device incorporates a fundamental processing unit that performs a sum of two multiplications, adding the partial products of both multiplications without computing the individual multiplications. Such fundamental processing units consume less area than conventional separate multipliers and adders. The specialized processing block further has input and output stages, as well as a loopback function, to allow the block to be configured for various digital signal processing operations, including finite impulse response (FIR) filters and infinite impulse response (IIR) filters. By using the programmable connections, and in some cases the programmable resources of the programmable logic device, and by running portions of the specialized processing block at higher clock speeds than the remainder of the programmable logic device, more complex FIR and IIR filters can be implemented.
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Azgomi Orang
Langhammer Martin
Lee Kwan Yee Martin
Pelt Robert L.
Streicher Keone
Altera Corporation
Bullock, Jr. Lewis
Ingerman Jeffrey H.
Ropes & Gray LLP
Sandifer Matthew
LandOfFree
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