Wireless power transfer via data signal

• US 8,981,728 B1
• Filed: 05/07/2014
• Issued: 03/17/2015
• Est. Priority Date: 05/05/2014
• Status: Expired due to Fees

• Current Assignee: Shangri-La Management S.L.
• Original Assignee: Shangri-La Management S.L.
• Inventors: Copelli, Pablo Ricardo, Casanovas, Joan Torrents, Coronas, Marc Freixas
• Primary Examiner(s): WILLIAMS, ARUN C
• Application Number:
  US14/272,040
• Time in Patent Office: 314 Days
• Field of Search: 320/137
• US Class Current: 320/137
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A system for wireless power transfer via a data signal including a transmitter configured to generate and transmit a wireless data signal that includes charging data to a receiver. The receiver includes a receiver memory bank including memory storage devices coupled to memory buses. The receiver includes a decoder configured to decode the wireless data signal received by the receiver to extract charging data therefrom, and write the charging data to the memory storage devices. The receiver includes a charge controller configured to cause the memory storage devices to output portions of the charging data on the memory busses. The receiver includes a voltage conversion circuit coupled to the memory busses configured to produce partial charging signals from the portions of charging data received on the memory busses. The receiver includes a voltage aggregator configured to aggregate the partial charging signals to generate a charging signal.

Claims

1. A receiver for wireless power transfer via a data signal, comprising:

a receiver memory bank including a plurality of memory storage devices coupled to a plurality of memory buses;

a decoder configured to;

decode a wireless data signal received by the receiver to extract charging data therefrom, and

write the charging data to the plurality of memory storage devices;

a charge controller configured to cause the plurality of memory storage devices to output portions of the charging data on the plurality of memory busses;

a voltage conversion circuit coupled to the plurality of memory busses configured to produce partial charging signals from the portions of charging data received on the plurality of memory busses; and

a voltage aggregator configured to aggregate the partial charging signals to generate a charging signal.

2. The receiver of claim 1, wherein the charge controller is further configured to cause the plurality of memory storage devices to cyclically output portions of charging data in a manner that cycles from one memory storage device to another, such that only a subset of the memory storage devices is outputting a portion of charging data within a given time.

3. The receiver of claim 1, wherein the decoder is further configured to write portions of charging data to the plurality of memory storage devices in a cyclic manner, such that the decoder is writing a portion of charging data to only a subset of the memory storage devices within a given time.

4. The receiver of claim 1, further comprising:

a demodulator configured to demodulate the data signal to obtain an information signal including a key and encoded data;

wherein the decoder is further configured to decode the encoded data in the information signal using the key to obtain an index and the charging data.

5. The receiver of claim 4, wherein the decoder is further configured to:

identify which portions of charging data are to be written to which memory storage device, of the plurality of memory storage devices, using the index.

6. The receiver of claim 1, wherein the decoder is further configured to:

a demodulator configured to demodulate the data signal to obtain an information signal,

wherein the decoder is further configured to;

retrieve a stored key from a local memory, and

decode the encoded data in the information signal using the key to obtain an index and the charging data.

7. The receiver of claim 1, wherein a memory storage device includes a plurality of physical memory cells and a virtual memory, the virtual memory including a plurality of virtual memory cells corresponding to the plurality of physical memory cells, and the charge controller is further configured to cause the memory storage device to write a value of a virtual memory cell to its corresponding physical memory cell after the memory storage device outputs a portion of charging data that includes the value of the corresponding physical memory cell.

8. A transmitter for wireless power transfer via a data signal, comprising:

a transmitter memory bank that includes a plurality of memory storage devices that store charging data and are scaled relative to a plurality of memory storage devices in a corresponding receiver;

an encoder configured to generate an information signal using portions of the charging data in the transmitter memory bank;

a signal generator configured to generate a carrier signal;

a modulator configured to modulate the carrier signal with the information signal to generate the data signal; and

an antenna coupled to the modulator that wirelessly transmits the data signal to the corresponding receiver, the receiver adapted to store charging data derived from the data signal in the plurality of memory storage devices in the receiver.

9. The transmitter of claim 8, wherein the encoder is further configured to upsample the charging data, the amount of upsampling based on the scaling of the plurality of memory storage devices in the transmitter relative to the plurality of memory storage devices in the receiver.

10. The transmitter of claim 8, wherein each of the plurality of memory storage devices in the transmitter include a corresponding buffer that stores portions of charging data.

11. The transmitter of claim 8, wherein the information signal comprises an index and portions of the charging data, and the encoder is further configured to:

retrieve from one or more of the memory storage devices in the transmitter a portion of the charging data;

map the portions of the retrieved charging data to index values that identify corresponding memory storage devices in the receiver;

generate an index using the index values, the index and the portions of the charging data forming the information signal; and

encode the index and charging data using a key.

12. The transmitter of claim 11, wherein the encoder is further configured to append the key to the information signal.

13. The transmitter of claim 8, further comprising:

a controller configured to;

select a key specific to the receiver;

provide the key to the encoder; and

the encoder is further configured to;

retrieve from one or more of the memory storage devices in the transmitter a portion of the charging data,

map the portions of the retrieved charging data to index values that identify corresponding memory storage devices in the receiver,

generate an index using the index values, the index and the portions of the charging data forming the information signal, and

encode the index and charging data using the key.

14. The transmitter of claim 8, further comprising:

a controller configured to;

determine the charging data using a lookup table that maps different charging data to different receivers; and

write the charging data to the plurality of memory storage devices in the transmitter.

15. A system for wireless power transfer via a data signal, comprising:

a transmitter configured to generate and transmit a wireless data signal that includes charging data; and

a receiver configured to receive the wireless data signal, the receiver comprising;

a receiver memory bank including a plurality of memory storage devices coupled to a plurality of memory buses;

a decoder configured to;

decode the wireless data signal received by the receiver to extract charging data therefrom, and

write the charging data to the plurality of memory storage devices;

a charge controller configured to cause the plurality of memory storage devices to output portions of the charging data on the plurality of memory busses,

a voltage conversion circuit coupled to the plurality of memory busses configured to produce partial charging signals from the portions of charging data received on the plurality of memory busses, and

a voltage aggregator configured to aggregate the partial charging signals to generate a charging signal.

16. The system of claim 15, wherein the transmitter comprises:

a transmitter memory bank that includes a plurality of memory storage devices that store charging data and are scaled relative to a plurality of memory storage devices in the receiver;

an encoder configured to generate an information signal using portions of the charging data in the transmitter memory bank;

a signal generator configured to generate a carrier signal;

a modulator configured to modulate the carrier signal with the information signal to generate the data signal; and

an antenna coupled to the modulator that wirelessly transmits the data signal to the receiver.

17. The system of claim 15, wherein the charge controller is further configured to cause the plurality of memory storage devices to cyclically output portions of charging data in a manner that cycles from one memory storage device to another, such that only a subset of the memory storage devices is outputting a portion of charging data within a given time.

18. The system of claim 15, wherein the decoder is further configured to write portions of charging data to the plurality of memory storage devices in a cyclic manner, such that the decoder is writing a portion of charging data to only a subset of the memory storage devices within a given time.

19. The system of claim 15, wherein the receiver further comprises:

a demodulator configured to demodulate the wireless data signal to obtain an information signal including a key and encoded data;

wherein the decoder is further configured to decode the encoded data in the information signal using the key to obtain an index and the charging data.

20. The system of claim 15, wherein a memory storage device includes a plurality of physical memory cells and a virtual memory, the virtual memory including a plurality of virtual memory cells corresponding to the plurality of physical memory cells, and the charge controller is further configured to cause the memory storage device to write a value of a virtual memory cell to its corresponding physical memory cell after the memory storage device outputs a portion of charging data that includes the value of the corresponding physical memory cell.