Speedy shift apparatus for use in arithmetic unit
AssigneeHyundai Electronics Industries Co., Ltd.
InventorsSun Ju Park, Hyeok Kang
Life of this patent
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Abstract
An shift circuit is used in an arithmetic unit, for shifting m-bit input data to left or in right, m being a positive integer. The shift circuit includes a latch for temporarily storing the m-bit input data and additional 2n-bit, wherein n is a positive integer; a shift logic block, receiving (m+2n)-bit data from the latch means, for providing (2n+1) number of m-bit shifted data; a sensor for generating a selection signal based on a predetermined shift condition; and a multiplexer, in response to the selection signal, for selecting one of the (2n+1) number of m-bit shifted data as an output signal of the apparatus.
Claims8
An apparatus, for use in an arithmetic unit, for shifting m-bit input data to left or right, m being a positive integer, which comprises:
- latch means for temporarily storing the m-bit input data and additional 2n-bit, wherein n is a positive integer;
- shift means receiving (m+2n)-bit data from the latch means, for providing (2n+1) number of m-bit shifted data;
- a sensor for generating a selection signal based on a state of the most significant 2-bit of the m-bit input data and a micro-code signal;
- selection means, in response to the selection signal, for selecting one of the (2n+1) number of m-bit shifted data as an output signal of the apparatus.
Dependencies are inferred from the claim text.