Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed
Reexamination Certificate
2004-05-04
2008-09-09
Mai, Tan V (Department: 2193)
Electrical computers: arithmetic processing and calculating
Electrical digital calculating computer
Particular function performed
Reexamination Certificate
active
07424504
ABSTRACT:
An arithmetic processor is provided, which comprises an arithmetic logic unit (ALU) containing arithmetic circuitry configured to perform field operations in an underlying field. The circuitry comprises a first controller for sequencing the ALU through steps in the field operations. The processor also comprises a register file comprising one or more general purpose registers to contain representations of one or more operands, and a second controller to provide instructions to the ALU for controlling computational operations of the ALU on the one or more operands. The second controller co-operates with the first controller to control operations of the ALU to accommodate different operand vector sizes in response to variations in size of the underlying field indicated by a field size control signal received by the second controller. The first controller monitors control bits and implements a counter in its own control registers for determining the size of a field being used.
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Blake Cassels & Graydon LLP
Certicom Corp.
Mai Tan V
Orange John R S.
Slaney Brett J.
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