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EP0410909A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Apparatus for converting a line scan into a stripe-wise vertical sawtooth scan

Assignee: STMicroelectronics SA
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Filing: 1990-07-23
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Granted: —
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Expires: 2010-07-23
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Abstract

Abstract Translated from French La présente invention concerne un dispositif de conversion d'un balayage linéaire de lignes successives de N données en un balayage en dents de scie par bandes d'une hauteur de M lignes. Ce dispositif comprend une mémoire de MN mots dans laquelle sont séquentiellement écrites les MN premières données puis dans laquelle les données suivantes sont séquentiellement écrites tandis que les données existantes sont lues en de mêmes adresses successives Ai,j, i déterminant un numéro d'ordre des données dans la mémoire (0<i<MN-1) et j un numéro de bande (1<j<n), et un générateur d'adresse fournissant lesdites adresses Ai,j de sorte que Ai+1,j = (Ai,j + xj) Modulo(MN-1), xj étant un nombre tel que xj+1 = N.xj Modulo(MN-1) et x1 = 1. The present invention relates to a device for converting a linear scan of successive lines of N data into a sawtooth scan in strips with a height of M lines. This device comprises a memory of MN words in which the first MN data are sequentially written then in which the following data are sequentially written while the existing data are read at the same successive addresses Ai, j, i determining a serial number of the data in the memory (0 <i <MN-1) and j a band number (1 <j <n), and an address generator supplying said addresses Ai, j so that Ai + 1, j = (Ai , j + xj) Modulo (MN-1), xj being a number such that xj + 1 = N.xj Modulo (MN-1) and x1 = 1.

Inventors

  • 👤 Alain Artieri

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 08:39
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/30

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

EP0057836A2 Cited
GB2158674A Cited
DE3136029A1 Cited

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