Data reproducing method and apparatus
US6188734A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1996 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Oct 31, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/23
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data reproducing apparatus for reproducing data subjected to convolution by partial response, by using maximum likelihood, includes a memory including a plurality of memory arrays which respectively correspond to plural states that the data can take and each of which has a predetermined number of regions each corresponding to a time point. A detecting device periodically detects, from the data, states before the plural states have been shifted, and a control device causes values respectively representing the detected states before shifting to be sequentially stored in the regions of the memory arrays every time detection is performed by the detection device, causing the values previously stored in the memory arrays to be replaced in accordance with the detected states before shifting, and when all values stored in the regions of the memory arrays corresponding to the same time point match, reproducing the data on the basis of the matching value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.