Data driven type digital filter unit and data driven type information processor including the same
US5636150A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1995 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Apr 3, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0294
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data driven filter unit includes a register file including a plurality of registers, a first computing element group including a multiplier, a second computing element group including an add/shift composite computing element, an input part for writing externally received data in a register, specified by a program, in the register file, and an output part for outputting register data, specified by a program, in the register file to the exterior of the unit. The register file includes a plurality of registers, and a single entry corresponds to a single fir or iir instruction. The register file stores external data, data being processed, a constant and an initial value. This register file executes reading and writing along a rule of single substitution/single readout. This program is read from a program memory provided in the filter unit, so that required data is stored in the register file. Connection between the register file and a computing element is decided by the program. This filter unit is especially suited for use combination with a data driven type information processor, achieving easy and high speed implementation of filters having arbitrary structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.