Method and apparatus for configuring a network appliance
First Claim
1. A device configured to establish communication via a magnetic field, said device comprising:
- a coil;
a coil driver coupled to the coil and adapted to receive a clock signal;
a flyback recovery circuit coupled to the coil;
wherein said coil driver and said flyback recovery circuit are adapted to induce magnetic field in the coil during a first time period;
a coil ringing snubber coupled to the coil; and
a quiescent data recovery circuit coupled to the coil;
wherein said data recovery circuit is adapted to receive data via the coil during a second time period during which said coil is in a quiescent mode.
1 Assignment
0 Petitions
Accused Products
Abstract
To establish communication between a host and a client, electromagnetic field is generated across coils disposed in the devices. The magnetic field generated across the coil disposed in the host is used to power the client and to transfer data to the client. The data received by the client may, in turn, be used to configure the client. To receive data from the client, the coil disposed in the host is placed in a quiescent data recovery mode. The data to be transmitted from the client to the host generates variations in magnetic field formed across the client'"'"'s coil. These variation, in turn, form variations in the magnetic field across the coil disposed in the host, and are subsequently decoded by the host to detect the data transmitted from the client. Supporting circuitry in both the host and client convert the electromagnetic variations into a stream of bits.
43 Citations
22 Claims
-
1. A device configured to establish communication via a magnetic field, said device comprising:
-
a coil;
a coil driver coupled to the coil and adapted to receive a clock signal;
a flyback recovery circuit coupled to the coil;
wherein said coil driver and said flyback recovery circuit are adapted to induce magnetic field in the coil during a first time period;
a coil ringing snubber coupled to the coil; and
a quiescent data recovery circuit coupled to the coil;
wherein said data recovery circuit is adapted to receive data via the coil during a second time period during which said coil is in a quiescent mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A device configured to establish communication via a magnetic field, said device comprising:
-
a coil;
a resonant capacitor coupled to the coil; and
a switch adapted to couple the coil to the capacitor when said device is in a mode to transmit data magnetically via the coil, and wherein said switch is further adapted to decouple the coil from the capacitor when said device is in a mode to receive data magnetically via the coil. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
- 17. A system comprising a host device and a client device, wherein said host is adapted to supply power to the client device and is further adapted to configure the client device when a first coil disposed in the host device is brought into close proximity of a second coil disposed in the client device, wherein said host device comprises a coil driver coupled to the first coil and adapted to receive a clock signal and to supply a drive signal to the first coil, and wherein said client device comprises a resonant capacitor coupled to the second coil, wherein a first magnetic field is formed in said first coil during a first time period and in response to the drive signal to supply power and data to the client device, and wherein a second magnetic field is formed in said first coil during a second time period and in response to a third magnetic field generated in the second coil, wherein said third magnetic field is generated to transmit data from the client device to the host device.
-
21. A method of establishing communication between a first device and a second device, the method comprising:
-
placing the first device adjacent the second device;
establishing a magnetic field in a coil disposed in the first device in response to a drive signal generated by the first device;
coupling the magnetic field established in the first coil to a second coil disposed in the second device;
using the magnetic field coupled to the second coil to power up the second device;
using the magnetic field coupled to the second coil to supply data from the first device to the second device. - View Dependent Claims (22)
-
Specification