Circuit for controlling the lines of a display screen and including test means with a single output

US5262720A · kind A · utility

Assignees

• France Telecom Etablissement Autonome de Droit Public (Centre National d'Etudes des Telecommunications) · FR
• Societe d'Applications Generales d'Electricite et de Mecanique Sagem · FR

Inventors

• Patrice Senn · Grenoble, FR
• Alan Lelah · Grenoble, FR
• Gilbert Martel · Meylan, FR
• Denis Pradel · Pierrelaye, FR

Key dates

• Filing date: Oct 8, 1991
• Grant date: Nov 16, 1993
• Expiry date: Oct 8, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G09G2330/12
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A circuit for controlling the lines of a display screen and including a t means with a single output is disclosed. The test means includes a single test control line (LCT), a single test output line (LST) and a plurality of sample holders (CEBj) and associated gates (Pj) and switches (Ij). The output voltage of the sample holders is transmitted onto a test output block (ST).