Method and device for encoding vibro-kinetic data onto an lpcm audio stream over an hdmi link

A method for modulating vibro-kinetic data onto an original LPCM audio stream to be packaged and synchronized with a video stream which is to be read by a video player, the original LPCM audio stream comprises a plurality of LPCM audio channels, the vibro-kinetic data for controlling a motion platform through a motion decoder, the method comprising:

• obtaining vibro-kinetic samples from a vibro-kinetic file, the vibro-kinetic samples comprising the vibro-kinetic data;
• obtaining a series of original LPCM audio samples from at least one of the audio channels from the original LPCM audio stream;
• modulating the vibro-kinetic data according to the LPCM audio samples using a perceptual distance criterion to produce a modulated signal in the audio band such that the detectability of the modulated signal within the audio signal is minimized;
• and
• producing an output LPCM audio channel by adding the modulated signal to the original LPCM audio channel, the output LPCM audio channel thereby includes the vibro-kinetic data for controlling the motion platform, the output LPCM audio channel for being transported over a digital link between the DVD player and the motion decoder.

A method for decoding, in real time, a stream of multi-channel vibro-kinetic data encoded in LPCM audio channels, the multi-channel vibro-kinetic

• data being for controlling a motion platform, the method comprising:
• receiving the LPCM audio channels with encoded vibro-kinetic data;
• constructing a bit stream with the Least Significant Bits of audio samples from the LPCM audio channels;
• parsing the bit stream and detecting a sync field;
• decoding and validating a vibro-kinetic packet;
• extracting vibro-kinetic samples from the vibro-kinetic packet;
• and
• outputting the vibro-kinetic samples to the motion platform.

A method for demodulating, in real time, a multi-channel vibro-kinetic signal modulated in audio channels, the multi-channel vibro-kinetic data being for controlling a motion platform, the method comprising:

• receiving the LPCM audio channels with modulated vibro-kinetic data;
• detecting, demodulating and validating vibro-kinetic data from the audio channels;
• extracting the vibro-kinetic samples from the vibro-kinetic data;
• and
• outputting the vibro-kinetic samples to the motion platform.

A motion decoder for decoding, in real time, a multi-channel vibro-kinetic signal included in an LPCM audio stream, the home-theatre audio stream comprising two or more LPCM audio channels, the multi-channel vibro-kinetic signal being for controlling a motion platform, the motion decoder comprising:

• a receiver for receiving and reading the LPCM audio channels;
• a processor for parsing, decoding and validating vibro-kinetic packets from the LPCM audio channels;
• and for decoding the vibro-kinetic samples from the vibro-kinetic packets;
• and
• an output for outputting the vibro-kinetic samples forming a vibro-kinetic signal used to control the motion platform.

A motion decoder for demodulating, in real time, a multi-channel vibro-kinetic signal included in an LPCM audio stream, the home-theatre audio stream comprising two or more LPCM audio channels, the multi-channel vibro-kinetic signal being for controlling a motion platform, the motion decoder comprising:

• a receiver for receiving and reading the LPCM audio channels;
• a processor for detecting, demodulating and validating vibro-kinetic data from the audio stream and for extracting the vibro-kinetic samples from the vibro-kinetic data;
• and
• an output for outputting the vibro-kinetic samples forming a vibro-kinetic signal used to control the motion platform.