Blocks and bits sequence reversing device using barrel shift
US5265259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1990 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Jul 3, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/768
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A bit sequence reversing device for reversing a sequence of data having a plurality of blocks, each block having a predetermined number of bits. The bit sequence reversing device includes a block reversing unit for reversing a sequence of at least two of the blocks; and a plurality of bit reversing units, each corresponding to one of the blocks, each of the bit reversing units reversing a sequence of the bits in the corresponding block. The block reversing unit includes a barrel shift unit. The barrel shift unit includes first and second input latch circuits for receiving the data; a series of left shift registers, connected to the first input circuit, for shifting the output of the first input latch circuit on the left direction, a series of right shift registers, connected to the second input circuit, for shifting the output of the second input latch circuit on the right direction; a first output control circuit, connected to a post-stage of one of the left shift registers, for selectively outputting data thereof; and a second output control circuit, connected to a post-stage of one of the right shift registers, for selectively outputting data thereof. The bit sequence reversing …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.