Sextant Avionique

Thomson-Csf Sextant

Michel Martinez

Jean-Noel Perbet

Philippe Coni

Jean-Jacques Favot

Pascal Moreau

Philippe Besnier

A system for acquisition of logic states including sensors operable in all-or-nothing mode, each sensor including a switch linked with a pulling resistor between ground and power-supply potential, an analog multiplexer including an output and inputs linking the switches and resistors, voltage representative of the potential linked to a specific input, an analog-digital converter linked to the output, a calculating logic unit which drives the multiplexer and converter, generates input addresses of the multiplexer periodically and sequentially, reads and stores digital values at an output of the converter for each address, determines a digital value of the voltage, determines for each address corresponding to a sensor, a position of the digital value for an address with respect to a threshold, relating to an address, the position representing logic state of each sensor, and an altering device for altering the threshold as a function of the digital value of the voltage.

Device for acquisition of logic states from multiple sensors

A device for receiving a television image and for processing it in real time for display on a different type of screen. The incident television image is digitized and then a micro-zone, selected from a series of predefined micro-zones stored in a screen memory, is assigned to each pixel in the incident image. The image is written into the memory, micro-zone by micro-zone, and then read for display on the screen. Each micro-zone is selected to represent the incident pixel in a way appropriate to the format conversion and/or transformation to be applied to the image.

Real time device to display television images on a screen

Growing community of inventors

Martignas S/Jalle, France

Michel Martinez