TGR - Retroactive Gestural Transducers (Haptic Devices)



As early as 1975, ACROE's founders underlined the need to introduce instrumental interactivity with computers for sensitive activities such as music and animation. At the time, there were no gestural transducers alowing to broadcast gesture data bilaterally between man and machine. Since gesture is both emission (action) and reception (proprioception), gestural transducers must have sensors (for action caption) and motors (for sensitive feedback). Thanks to these electro-mechanic devices, connected to the computer, the user can manipulate virtual objects while feeling its behavioral properties (weight, rigidity, consistence, ...). This kind of interface is nowadays well know as "haptic interface".




The first TGR, achieved in 1978, (cf. Thesis Florens, 1978) permitted the validation of the force-feedback concept, and the first measures on action-perception gestures.




The second TGR, achieved in 1981, named "la Touche", permitted higher compactness of the mechanism, the first tactile behavior synthesis, and digital physical interaction simulations with sound and animation.





The third TGR, named ©Clavier Rétroactif Modulaire (CRM) presented in 1988, improves on compactness and brings technically "limitless" degrees of freedom. On the basis of the CRM transducer, new mechanical interfaces are being worked on, enabling to configure it as a 3D or 6D stick, scalpel, keyboard, pliers, ...




Look at our haptics products here : ERGOS-TECHNOLOGIES