Method for generating haptic coefficients using an autoregressive model, signal and device for reproducing such coefficients

Patent metadata

Field	Value
Publication number	US-2016295302-A1
Application number	US-201415038245-A
Country	US
Kind code	A1
Filing date	Nov 21, 2014
Priority date	Nov 25, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

The invention relates to a method for generating haptic coefficients associated with an audiovisual document. Initially, data is extracted from an audio and/or video track and is used to calculate at least one first group of haptic coefficients from an autoregressive model applied to the read data. These haptic coefficients are designed to programme a filter supplying at the output the control parameters for controlling at least one haptic actuator. Then, a “haptic” sequence of the audiovisual document is determined and calculated haptic parameters are associated with the determined sequence. In this manner, the haptic parameters enabling the control of one or more actuators are easily calculated and easily reproducible. Advantageously, the data used for the calculation is extracted from the selected sequence.

First claim

1 . A method of rendering a haptic effect, wherein the method comprises:
receiving a first information representative of a duration and a plurality of coefficients associated with an Auto-Regressive filter and representative of the haptic effect to be rendered, generating a signal representative of the haptic effect to be rendered, said signal being generated by an Auto-Regressive filter using said second plurality of coefficients and a white noise having a duration depending on said first information.

2 . The method according to claim 1 , further comprising transmitting said signal to at least one haptic actuator.

3 . The method according to claim 1 , wherein the method further comprises receiving a video data stream, said first information and said plurality of coefficients being associated with at least a part of said video data stream.

4 . The method according to claim 1 , wherein said plurality of coefficients is selected from a library of groups of coefficients, each group being associated with a different haptic effect.

5 . A device configured for rendering a haptic effect, wherein the device comprises:
a communication interface configured to receive a first information representative of a duration and a plurality of coefficients associated with an Auto-Regressive filter and representative of the haptic effect to be rendered, a processor configured to generate a signal representative of the haptic effect to be rendered, said signal being generated by an Auto-Regressive filter using said plurality of coefficients and a white noise having a duration depending on said first information.

6 . The device according to claim 5 , wherein said communication interface is further configured to transmit said signal to at least one haptic actuator.

7 . The device according to claim 5 , wherein the communication interface is further configured to receive a video data stream, said first information and said plurality of coefficients being associated with at least a part of said video data stream.

8 . The device according to claim 5 , wherein said plurality of coefficients is selected from a library of groups of coefficients, each group being associated with a different haptic effect.

9 . A computer program product comprising instructions of program code for executing steps of the method according to claim 1 , when said program is executed on a computer.

10 . A computer-readable medium comprising a computer program product recorded thereon and capable of being run by a processor, including program code instructions for implementing the method according to claim 1 .

Assignees

• Thomson Licensing

Inventors

• Fleureau Julien
• Danieau Fabien
• Guillotel Philippe

Classifications

• H04N21/435

  Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream · CPC title

• H04N21/235 Primary

  Processing of additional data, e.g. scrambling of additional data or processing content descriptors · CPC title

• H04N21/84

  Generation or processing of descriptive data, e.g. content descriptors {(systems specially adapted for using meta-information in broadcast systems H04H60/73)} · CPC title

• H04N21/4131

  home appliance, e.g. lighting, air conditioning system, metering devices (home automation data switching networks exchanging configuration information on appliance services H04L12/2807) · CPC title

• H04N21/8133 Primary

  specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video programme · CPC title