Implantable biomedical chip with modulator for a wireless neural stimulation system
AssigneeNational Sun Yat-Sen University
InventorsChua-Chin Wang, Tzung-Je Lee
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Abstract
The invention relates to an implantable biomedical chip with modulator for a wireless neural stimulating system. The implantable biomedical chip comprises a power regulator, a demodulator, a baseband circuit, a D/A converter, an instrumentation amplifier, an A/D converter and a modulator. According to the invention, the modulator is mounted on the implantable biomedical chip, and can achieve full-duplex communication to improve the controllability and observability. Besides, the power consumption and area occupation is reduced as compared with using discrete components. Therefore, the integration of the implantable biomedical chip can be easily accomplished.
Claims11
An implantable biomedical chip with modulator for a wireless neural stimulating system, comprising:
- a power regulator, for receiving power from a receiver coil and providing power;
- a demodulator, for demodulating an input signal from the receiver coil to a demodulated signal;
- a baseband circuit, for decoding the demodulated signal to at least one control signal;
- a D/A converter, for converting the control signal to a stimulating current;
- an instrumentation amplifier, for amplifying and filtering a neural signal;
- an A/D converter, for converting the neural signal from the instrumentation amplifier to a digital neural signal;
- and
- a modulator, the for modulating the digital neural signal to an output signal.
A state transition method for an implantable biomedical chip, comprising the steps of:
- (a) transiting a zero state to a first state according to a built-in reset signal;
- (b) transiting the first state to a second state according to a synchronization packet;
- (c) transiting the second state to a third state according to a start packet;
- and
- (d) transiting the third state to the first state according to an end packet.
Dependencies are inferred from the claim text.