Memory device and data transport method
View Patent ↗According to one embodiment, a memory device is configured to be mounted on a substrate of a host device. The memory device includes a non-volatile memory, a controller circuit, and a wireless communication circuit. The controller circuit is configured to perform data transfer between the host device and the non-volatile memory. The wireless communication circuit is configured to transmit data read from the non-volatile memory with wireless communication, after the controller circuit is set in a state where the data transfer cannot be performed.
1. A memory device configured to be mounted on a substrate of a host device, the memory device comprising:
a non-volatile memory;
a controller circuit configured to perform data transfer between the host device and the non-volatile memory upon a request from the host device; and
a wireless communication circuit configured to:
transmit data read from the non-volatile memory with wireless communication, after the controller circuit is set in a state where the data transfer cannot be performed: and
perform the wireless communication after power supply to the controller circuit is stopped.
2. The memory device according to claim 1 , wherein the wireless communication circuit is operated using power supplied from a reception device that receives data transmitted with the wireless communication.
3. The memory device according to claim 1 , wherein the wireless communication circuit is operated using power supplied with wireless power transmission.
4. The memory device according to claim 1 , further comprising a fuse that is connected to a power source path to the controller circuit, wherein
the controller circuit shifts to a state where the data transfer cannot be performed due to disconnection of the fuse.
5. The memory device according to claim 4 , comprising a terminal that is connected to the fuse.
6. The memory device according to claim 1 , wherein the controller circuit shifts to a state where the data transfer cannot be performed due to execution of an input command.
7. The memory device according to claim 6 , comprising a terminal to which the command is input.
8. The memory device according to claim 1 , wherein
the controller circuit outputs a predetermined signal when the data transfer can be performed, and
a function suspended state of the wireless communication circuit is canceled when an output of the signal is stopped.
9. The memory device according to claim 1 , wherein the wireless communication circuit is provided in a chip that constitutes the controller circuit.
10. A method of transporting data from a memory device that is mounted on a substrate of a host device, the memory device including a non-volatile memory, a controller circuit that performs data transfer, and a wireless communication circuit, the method comprising:
reading data stored in the non-volatile memory to the wireless communication circuit after the memory device is set in a state where the data transfer between the host device and the non-volatile memory upon a request from the host device cannot be performed; and
transmitting read data from the wireless communication circuit with wireless communication,
wherein data stored in the non-volatile memory is read to the wireless communication circuit after power supply to the controller circuit is stopped.
11. The method according to claim 10 , wherein
power is supplied from a reception device to the wireless communication circuit to operate the wireless communication circuit, and
data transmitted from the wireless communication circuit is received by the reception device.
12. The method according to claim 10 , wherein power is supplied to the wireless communication circuit with wireless power transmission to operate the wireless communication circuit.
13. The method according to claim 10 , wherein
a fuse that is connected to a power source path to the controller circuit is disconnected to shift the controller circuit to a state where the data transfer cannot be performed.
14. The method according to claim 13 , wherein the fuse is disconnected by application of a voltage from a terminal that is connected to the fuse.
15. The method according to claim 10 , wherein
when a command is executed in the controller circuit, the controller circuit shifts to a state where the data transfer cannot be performed.
16. The method according to claim 15 , wherein the command input from a terminal that is connected to the controller circuit is executed.
17. The method according to claim 10 , wherein
a predetermined signal is output from the controller circuit when the data transfer can be performed, and
a function suspended state of the wireless communication circuit is canceled when the output of the signal is stopped.
18. The method according to claim 10 , wherein user data stored in the non-volatile memory is read to the wireless communication circuit.