Device for converting a line scanning into a vertical saw tooth scanning through stripes
US5151976A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1990 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Jul 26, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device for converting a horizontal scanning of successive lines of N data into a saw tooth scanning of stripes having a height of M lines. This device comprises a MN word memory wherein are sequentially written the first MN data, then wherein the following data are sequentially written while the existing data are read out at same successive addresses A.sub.i,j. The value of i determines the sequence number of the data of the memory (0<i<MN-1), and the value of j determines a stripe number (1<j<n). An address generator supplies addresses A.sub.i,j so that A.sub.i+1,j =(A.sub.i,j +x.sub.j) Modulo(MN-1), x.sub.j being a number such that x.sub.j+1 =N.x.sub.j Modulo(MN-1) and x.sub.j =1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.