Power regulation feedback to optimize robustness of wireless transmissions

• US 20060246846A1
• Filed: 04/27/2005
• Published: 11/02/2006
• Est. Priority Date: 04/27/2005
• Status: Active Grant

• Current Assignee: Medos International Sarl (Johnson & Johnson)
• Original Assignee: Codman Neuro Sciences Sarl
• Inventors: Ginggen, Alec, Crivelli, Rocco
• Granted Patent: US 7,502,594 B2
• Time in Patent Office: Days
• US Class Current: 455/69
• CPC Class Codes: G06K 19/0701 at least one of the integrated circuit chips comprising an arrangement for power management
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/48 Transceivers
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A wireless communication system with power regulation feedback for improving the robustness of wireless communication transmissions between a receiver and an active emitter irrespective of the distance separation therebetween. The receiver receives wireless communications and detects a voltage induced therein. A feedback loop provides wireless transmission of power regulation feedback based on the detected voltage. The active emitter generates a power regulated data signal in which at least one of maximum and minimum bit voltage levels of respective logical high and low bits is adjusted based on the induced voltage received via the feedback loop. The RF power level, modulation index, and/or slew rate of a data signal emitted from the active emitter is regulated by adjusting at least one of maximum and minimum bit voltage levels of respective logical high and low bits based on voltage induced in the receiver during a previous communication from the active emitter.

Claims

1. A wireless communication system with power regulation feedback to improve robustness of wireless communication transmissions between a receiver and active emitter irrespective of distance separation therebetween, comprising:

the receiver being adapted to receive an RF modulated data signal, the receiver comprising;

a converter for collecting RF energy from the received RF modulated data signal and converting the RF energy to an induced voltage signal;

a first demodulator for demodulating the received RF modulated data signal;

a first processor for receiving as input the demodulated RF data signal and the induced voltage signal and generating an RF responsive data signal including the induced voltage signal;

a first modulator for receiving as input the RF responsive data signal and generating an RF modulated responsive data signal;

the active emitter in wireless communication with the receiver for receiving the RF modulated responsive data signal, the active emitter comprising;

a second demodulator for demodulating the received RF modulated responsive data signal;

a second processor for receiving as input the demodulated RF responsive data signal, the second processor generating new data and at least one of adjusted maximum and minimum bit voltage levels of respective logical high and low bits based on the induced voltage signal of the demodulated RF responsive data signal;

a data converter for receiving as input the new data and the at least one adjusted maximum and minimum bit voltage levels from the second processor, the data converter producing as output a converted data signal at an adjusted voltage level based on an average of the adjusted maximum and minimum bit voltage levels;

an RF carrier generator for generating an RF carrier wave; and

a second modulator for receiving as input the converted data signal and the carrier wave, the modulator generating as output a new RF modulated data signal to be transmitted to the receiver.

2. The wireless communication system in accordance with claim 1, wherein the second processor retrieves the at least one adjusted bit voltage levels from a look-up-table based on the induced voltage signal of the RF responsive data signal.

3. The wireless communication system in accordance with claim 1, wherein the second modulator comprises:

a mixer coupled to the second processor for modulating the RF carrier wave by the converted data signal; and

an amplifier for amplifying the output of the mixer and producing the new RF modulated data signal.

4. The wireless communication system in accordance with claim 1, wherein the second modulator comprises:

an amplifier for amplifying the converted data signal and producing an amplified data signal; and

a mixer coupled to the amplifier for modulating the RF carrier wave by the amplified data signal and producing the new RF modulated data signal.

5. The wireless communication system in accordance with claim 1, further comprising a sampler to convert the induced voltage signal from an analog signal to a digital signal.

6. The wireless communication system in accordance with claim 1, wherein the RF modulated data signal received by the receiver is amplitude modulated;

and the at least one bit voltage level being adjusted based on the induced voltage signal of the demodulated RF responsive data signal in order to vary at least one of RF power level, modulation index and slew rate of the of the data signal emitted by the active emitter.

7. The wireless communication system in accordance with claim 6, wherein in the active emitter the at least one bit voltage level is adjusted based on the induced voltage signal of the demodulated RF responsive data signal in order to vary at least two parameters selected from the group consisting of RF power level, modulation index and slew rate of the of the data signal emitted by the active emitter.

8. The wireless communication system in accordance with claim 6, wherein in the active emitter the at least one bit voltage level is adjusted based on the induced voltage signal of the demodulated RF responsive data signal in order to vary RF power level, modulation index, and slew rate of the of the data signal emitted by the active emitter.

9. A wireless communication system with power regulation feedback to improve robustness of wireless communication transmissions between a receiver and active emitter irrespective of distance separation therebetween, comprising:

the receiver being adapted to receive wireless communications and detect a voltage induced therein;

a feedback loop for wireless transmission of power regulation feedback based on the voltage induced in the receiver; and

the active emitter being adapted for generating a power regulated data signal in which at least one of maximum and minimum bit voltage levels of respective logical high and low bits is adjusted based on the induced voltage received via the feedback loop.

10. The wireless communication system in accordance with claim 9, wherein the active emitter further comprises a processor for adjusting the at least one of maximum and minimum bit voltage levels of respective logical high and low bits in order to regulate at least one of RF power level, modulation index, and slew rate of the data signal emitted by the active emitter based on the induced voltage received via the feedback loop.

11. The wireless communication system in accordance with claim 9, wherein in the active emitter the at least one bit voltage level is adjusted based on the induced voltage signal of the demodulated RF responsive data signal in order to vary at least two parameters selected from the group consisting of RF power level, modulation index and slew rate of the of the data signal emitted by the active emitter.

12. The wireless communication system in accordance with claim 9, wherein in the active emitter the at least one bit voltage level is adjusted based on the induced voltage signal of the demodulated RF responsive data signal in order to vary RF power level, modulation index, and slew rate of the of the data signal emitted by the active emitter.

13. A method for using a wireless communication system with power regulation feedback to improve robustness of wireless communication transmissions between a receiver and active emitter irrespective of distance separation therebetween, comprising the steps of:

receiving an RF modulated data signal at the receiver;

converting RF energy from the received RF modulated data signal to an induced voltage signal;

demodulating the received RF modulated data signal;

generating an RF responsive data signal including the induced voltage signal using a first processor receiving as input the demodulated RF data signal and the induced voltage signal;

modulating the RF responsive data signal and producing an RF modulated responsive data signal;

transmitting wirelessly the RF modulated responsive data signal from the receiver to the active emitter;

demodulating the received RF modulated responsive data signal to produce a demodulated RF responsive data signal;

generating new data and at least one of adjusted maximum and minimum bit voltage levels of respective logical high and low bits in response to receiving as input to a second processor the demodulated RF responsive data signal;

the bit voltage levels being adjusted based on the induced voltage signal of the demodulated RF responsive data signal; and

shifting the new data to an adjusted voltage level based on the average of the at least one adjusted maximum and minimum bit voltage levels to produce a converted data signal.

14. The method in accordance with claim 13, further comprising the steps of:

generating a carrier wave; and

modulating the carrier wave by the converted data signal to produced a new RF modulated data signal.

15. The method in accordance with claim 14, further comprising transmitting the new RF modulated data signal from the active emitter to the receiver.

16. The method in accordance with claim 13, wherein the shifting step comprises adjusting the at least one maximum and minimum bit voltage levels based on the induced voltage signal of the demodulated RF responsive data signal in order to vary at least one parameter selected from the group consisting of RF power level, modulation index and slew rate of the of the data signal emitted by the active emitter.

17. The method in accordance with claim 16, wherein the shifting step comprises adjusting the at least one maximum and minimum bit voltage levels based on the induced voltage signal of the demodulated RF responsive data signal in order to vary at least two parameters selected from the group consisting of RF power level, modulation index and slew rate of the of the data signal emitted by the active emitter.

18. The method in accordance with claim 16, wherein the shifting step comprises adjusting the at least one maximum and minimum bit voltage levels based on the induced voltage signal of the demodulated RF responsive data signal in order to vary RF power level, modulation index, and slew rate of the of the data signal emitted by the active emitter.

19. A method for using a wireless communication system with power regulation feedback to improve robustness of wireless communication transmissions between a receiver and active emitter irrespective of distance separation therebetween, comprising the steps of:

regulating at least one of RF power level, modulation index, and slew rate of a data signal emitted from the active emitter by adjusting at least one of maximum and minimum bit voltage levels of respective logical high and low bits based on voltage induced in the receiver during a previous wireless communication from the active emitter.

20. The method in accordance with claim 19, wherein the regulating step further comprises adjusting the at least one maximum and minimum bit voltage levels based on the induced voltage signal induced in the receiver during a previous communication from the active emitter in order to vary at least two parameters selected from the group consisting of RF power level, modulation index, and slew rate of the of the data signal emitted by the active emitter.

21. The method in accordance with claim 19, wherein the regulating step further comprises adjusting the at least one maximum and minimum bit voltage levels based on the induced voltage signal induced in the receiver during a previous communication from the active emitter in order to vary RF power level, modulation index and slew rate of the of the data signal emitted by the active emitter.