Device for converting a line scanning into a vertical saw tooth

Details Device for converting a line scanning into a vertical saw tooth Device for converting a line scanning into a vertical saw tooth

1990-07-26

1992-09-29

Harkcom, Gary V.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

395164, 340747, G06F 1568

Patent

active

051519763

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.

REFERENCES:
patent: 4451852 (1984-05-01), Masuda et al.
patent: 4472732 (1984-09-01), Bennett et al.
patent: 4985849 (1991-01-01), Hideaki
patent: 4991127 (1991-02-01), Crookshanks
patent: 4992960 (1991-02-01), Yamaoka et al.

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