Bidirectional shifter circuit
US5844825A · kind A · utility
Inventors
Key dates
| Filing date | Sep 3, 1996 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Sep 3, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/768
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A bidirectional shifter circuit is disclosed for shifting an inputted data word a chosen number of bit positions in either a first or a second chosen direction. The bidirectional shifter circuit is provided with a first bit-reversing circuit which receives an inputted data word. In response to choosing a first shift direction, the first bit-reversing circuit outputs the data word with the bits in their original order. In response to choosing the second shift direction, the first bit-reversing circuit outputs the data word with the bits in reverse order. A single-direction shifter circuit is provided which receives the data word outputted by the first bit-reversing circuit and shifts the received data word the chosen number of bit positions in the first direction. A second bit-reversing circuit is provided which receives the shifted data word and which, in response to choosing the first shift direction, outputs the data word with the bits in the same order as received and, in response to choosing the second shift direction, outputs the data word with the bits in reverse order.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.