Data recognition apparatus
US4227175A · kind A · utility
38Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1979 |
| Grant date | Oct 7, 1980 |
| Priority date | — |
| Expiry date | Jan 15, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/068
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Data recognition apparatus includes a temporary storage to hold three data bits, a readable storage to store eight different sequences which are expected to occur, and a comparison means to find the closest match of the contents of the temporary storage with the readable storage at each bit time. Error detection and error correction are realized as each bit is recognized three times sequentially. The apparatus may use surface acoustic wave and charge coupled device filter banks, and analog to digital conversion plus data processor comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.