METHOD FOR HAPTIC FEEDBACK CONTROL

• US 20110181404A1
• Filed: 07/21/2009
• Published: 07/28/2011
• Est. Priority Date: 07/21/2008
• Status: Active Grant

• Current Assignee: DAV Société par actions simplifiée
• Original Assignee: DAV Société par actions simplifiée
• Inventors: Xavier, Prénoms Drouin, Tissot, Jean Marc, Laurent, Patrice
• Granted Patent: US 9,176,583 B2
• Time in Patent Office: Days
• US Class Current: 340/407.1
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface

Abstract

The invention relates to a method for haptic feedback control that comprises a control device for transmitting a haptic feedback to the finger of a user in a movement area of said finger, characterised in that said control method comprises a first step (101) of determining the direction of an elementary movement of said finger and decomposing the elementary movement into components along said first and second driving directions (D1, D2), and a second step (102) of independently driving said first actuator (7a) and second actuator (7b) based on the components of the elementary movement (dU) in order to drive said plate (3) in translation so that the result of the vibratory effect generated by said actuators (7a, 7b) can be felt by said finger in a direction (dR) substantially perpendicular to and coplanar with the direction of said elementary movement (dU).

Claims

1. A method for haptic feedback control comprising:

transmitting, by a control device, a haptic feedback to a finger of a user in a zone of movement of said finger,

wherein said control device comprises;

a backing plate for transmitting the haptic feedback to the finger of the user in the zone of movement of said finger,

a sensor for sensing the movement of said finger in said zone,

a first actuator and a second actuator connected to said plate to generate the haptic feedback in said zone as a function of a signal originating from said sensor, the first actuator being capable of driving said plate in a first drive direction and the second actuator being capable of driving said plate in a second driving direction, substantially perpendicular to and coplanar with the first direction, and

a processing unit connected to said sensor to determine the direction of an elementary movement of said finger based on the signals originating from said sensor, the processing unit being configured to control independently the first actuator and the second actuator as a function of the components of said elementary movement according to the first drive direction and the second drive direction;

determining the direction of an elementary movement of said finger;

breaking down the elementary movement into components according to said first and second drive direction; and

independently controlling said first actuator and said second actuator as a function of the components of said elementary movement to drive said plate in translation so that the result of a vibratory effect generated by said actuators is felt by said finger in a direction substantially perpendicular to and coplanar with the direction of said elementary movement.

2. The control method as claimed in claim 1, wherein, during the independent controlling of the first and second actuator, a parameter associated with control of the actuators is modulated proportionally to the components of the elementary movement of said finger.