Contactless replacement for cabled standards-based interfaces
View Patent ↗A contactless, electromagnetic (EM) replacement (substitute, alternative) for cabled (electric) Standards-based interfaces (such as, but not limited to USB) which effectively handles the data transfer requirements (such as bandwidth, speed, latency) associated with the Standard, and which is also capable of measuring and replicating relevant physical conditions (such as voltage levels) on data lines so as to function compatibly and transparently with the Standard. A contactless link may be provided between devices having transceivers. A non-conducting housing may enclose the devices. Some applications for the contactless (EM) interface are disclosed. A dielectric coupler facilitating communication between communications chips which are several meters apart. Conductive paths may provide power and ground for bus-powered devices.
1. A method of communicating data comprising:
at a first device:
determining an electrical condition of a first signal line carrying data, wherein data carried on the first signal line is data that will be contactlessly transmitted, and wherein the signal line is configured for transporting the data according to a Standards-based protocol; and
contactlessly transmitting an electromagnetic (EM) signal indicative of the determined electrical condition such that communication of data between the first device and a second device is transparent to the Standard-based protocol, wherein the EM signal indicative of the determined electrical condition is contactlessly transmitted out of band with respect to any data carried on the first signal line that will be contactlessly transmitted, and wherein the determined electrical condition is based on the first signal line carrying data that will be contactlessly transmitted.
2. The method of claim 1 , further comprising:
at the first device, receiving an electromagnetic signal indicative of a second electrical condition associated with data originated on a second signal line at a second device, and replicating the second electrical condition at the first device.
3. The method of claim 1 , further comprising:
at a second device, receiving the electromagnetic signal indicative of the electrical condition and replicating a similar electrical condition on a third signal line.
4. The method of claim 2 , wherein:
the first and second devices are not physically connected with one another.
5. The method of claim 1 wherein the Standards-based protocol is selected from the group consisting of USB, PCIe, SATA, SAS, MHL, HDMI, DP, Ethernet I2S, I2C, Thunderbolt, Quickpath, D-PHY, M-PHY and Hypertransport.
6. The method of claim 1 , wherein the electromagnetic signal is transmitted within criteria established by a Standards-based protocol.
7. The method of claim 1 , wherein the electromagnetic signal is transmitted with an energy output below that of FCC requirements for transmitting an identification code.
8. The method of claim 1 , wherein the first device communicates electromagnetically, over an air gap.
9. The method of claim 1 , wherein the first device communicates electromagnetically, through one or more dielectric mediums.
10. The method of claim 1 , wherein the first device communicates over an electromagnetic interface in an extremely high frequency (EHF) band.
11. The method of claim 1 , wherein the first device communicates by modulating and demodulating a carrier having a frequency of at least 30 GHz (gigahertz).
12. The method of claim 1 , wherein the first device communicates data by modulating and demodulating a carrier with a data rate which is greater than or equal to 1 Gbps (gigabits per second).
13. The method of claim 2 , further comprising:
enclosing the device with a non-conducting barrier.
14. The method of claim 2 , wherein:
the device is hermetically sealed by a housing.
15. The method of claim 1 wherein:
the electromagnetic (EM) signal is transmitted through a dielectric cable.
16. A system for communicating data from signal lines configured for a Standards-based protocol comprising:
a first device comprising a transceiver operative to:
convert electrical signal inputs into electromagnetic (EM) signal outputs to support an extremely high frequency (EHF) contactless communication link;
determine an electrical condition of a first signal line carrying data that will be contactlessly transmitted; and
contactlessly transmit an electromagnetic (EM) signal indicative of the determined electrical condition such that communication of data between the first device and a second device is transparent to the Standard-based protocol, wherein the EM signal indicative of the determined electrical condition is contactlessly transmitted out of band with respect to any data carried on the first signal line that will be contactlessly transmitted, and wherein the determined electrical condition is determined based on the first signal line carrying data that will be contactlessly transmitted.
17. The system of claim 16 , wherein the transceiver is a first transceiver, wherein the first device comprises a second transceiver operative to:
receive an electromagnetic signal indicative of a second electrical condition associated with data originated on a signal lines at a second device, and
replicate the second electrical condition at the first device.
18. The system of claim 16 , further comprising:
a second device comprising a transceiver operative to:
receive the determined electrical condition; and
replicate a similar electrical condition on a signal line associated with the second device.
19. The system of claim 16 , further comprising:
a non-conducting barrier enclosing the first device.