Apparatus for reconstructing a binary bit pattern
US4084153A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1976 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Mar 15, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C13/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A binary bit pattern is reconstructed from a block of analog signals corresponding to the number of known bit positions of the pattern being reconstructed. The analog signals, which may take the form of light intensity signals, vary in signal level with the binary level represented as well as with a characteristic which causes the signal levels of the analog signals to vary in a known manner as a function of bit position. In reconstructing the bit pattern, an output signal is developed having a value dependent upon that of at least one of the analog signals which has a known bit level reconstruction. This signal is used for providing a variable threshold having a value which varies in dependence upon the outut signal as modified by a modifying factor which varies in the known manner as a function of bit position. Bit decision circuitry includes a comparator for sequentially comparing the analog signals with the variable threshold to provide bit decision indications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.