Patent ID: 11966513
Assignee: CIRRUS LOGIC INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. A drive circuit for use in an audio-haptic system, the system comprising a signal processor, an audio output transducer and a haptic output transducer, wherein the signal processor is configured to provide an input signal for the drive circuit, the input signal representing audio information and haptic information, and wherein the drive circuit comprises an audio output amplifier configured to generate an audio drive signal for driving the audio output transducer based on the audio information represented in the input signal and a separate haptic output amplifier configured to generate a haptic drive signal for driving the haptic output transducer based on the haptic information represented in the input signal and is implemented on a single ASIC chip, wherein:
the drive circuit comprises a synchronisation module, the synchronisation module arranged to synchronise output of the audio drive signal and the haptic drive signal;
the synchronisation module is provided in the audio output amplifier, the haptic output amplifier, or both; and
the synchronisation module is configured to monitor steps of decoding or recovering the audio information, the haptic information, or both to account for any variation in recovery and output paths to the audio output transducer and the haptic output transducer based on an embedded synchronisation marker in the audio information, the haptic information, or both and based thereon to synchronise the output of the audio drive signal and the haptic drive signal.