US Patent 11229787 Haptic human machine interface and wearable electronics methods and apparatus

A plurality of individually addressable electrodes is supported by a housing. The individually addressable electrodes are for at least one of applying stimulation electrical signals to skin of a user and detecting biometric electrical signals from the skin of the user. At least one of a signal detector is provided for detecting the biometric electrical signals and a signal generator is provided for generating the stimulation electrical signals. An electrode multiplex circuit is provided for addressing the plurality of individually addressable electrodes by at least one of routing the biometric electrical signals from the skin of the user through more than one of the plurality of individually addressable electrodes to the signal detector and routing the stimulation electrical signals from the signal generator through more than one of the plurality of individually addressable electrode to the skin of the user. A microprocessor is provided for controlling at least one of the signal detector, the signal generator, the electrode multiplex circuit.