Memory system
First Claim
Patent Images
1. A memory system comprising:
- a power supply terminal electrically connectable through a wired connection to a first host, the power supply terminal to be electrically connectable to a power supply line of the first host;
a plurality of couplers configured to perform near-field wireless communication with the first host, each of the plurality of couplers being capable of communicating with each of a plurality of couplers of the first host by using electromagnetic induction; and
a control unit configured to establish, in response to power supply from the first host via the power supply line to the power supply terminal, a reception channel and a transmission channel that are independent of each other between the memory system and the first host via the plurality of couplers,wherein the control unit, in response to the level of the power supply voltage supplied from the first host being switched from a first level to a second level higher than the first level, receives host basic information about capabilities of the first host from the first host via a first communication channel from among the plurality of communication channels, receives test symbols from the first host via the first communication channel, transmits memory-system basic information about capabilities of the memory system to the first host via a second communication channel from among the plurality of communication channels while receiving the test symbols via the first communication channel, and sets the first communication channel as a reception channel and the second communication channel as a transmission channel.
2 Assignments
0 Petitions
Accused Products
Abstract
According to one embodiment, there is provided a memory system including a power supply terminal, a plurality of couplers, and a control unit. The power supply terminal is a terminal to be connected to a power supply line of a host. The plurality of couplers are couplers to be electromagnetically coupled respectively to couplers of the host. The control unit can establish a reception channel and a transmission channel that are independent of each other between the memory system and the host via the plurality of couplers according to level of a power supply voltage supplied from the host via the power supply line and the power supply terminal.
20 Citations
19 Claims
-
1. A memory system comprising:
-
a power supply terminal electrically connectable through a wired connection to a first host, the power supply terminal to be electrically connectable to a power supply line of the first host; a plurality of couplers configured to perform near-field wireless communication with the first host, each of the plurality of couplers being capable of communicating with each of a plurality of couplers of the first host by using electromagnetic induction; and a control unit configured to establish, in response to power supply from the first host via the power supply line to the power supply terminal, a reception channel and a transmission channel that are independent of each other between the memory system and the first host via the plurality of couplers, wherein the control unit, in response to the level of the power supply voltage supplied from the first host being switched from a first level to a second level higher than the first level, receives host basic information about capabilities of the first host from the first host via a first communication channel from among the plurality of communication channels, receives test symbols from the first host via the first communication channel, transmits memory-system basic information about capabilities of the memory system to the first host via a second communication channel from among the plurality of communication channels while receiving the test symbols via the first communication channel, and sets the first communication channel as a reception channel and the second communication channel as a transmission channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A memory system comprising:
-
a power supply terminal electrically connectable through a wired connection to a first host, the power supply terminal to be electrically connectable to a power supply line of the first host; a plurality of couplers configured to perform near-field wireless communication with the first host, each of the plurality of couplers being capable of communicating with each of a plurality of couplers of the first host by using electromagnetic induction; and a control unit configured to establish, in response to power supply from the first host via the power supply line to the power supply terminal, a reception channel and a transmission channel that are independent of each other between the memory system and the first host via the plurality of couplers, wherein the control unit includes; a voltage recognizer that recognizes the level of the power supply voltage supplied from the first host via the power supply terminal using a first reference level and a second reference level higher than the first reference level; a first regulator that, in a case where the level of the power supply voltage supplied is greater than or equal to the first reference level, generates a first internal voltage and, in a case where the level of the power supply voltage supplied is less than the first reference level, stops operating; a second regulator that, in a case where the level of the power supply voltage supplied is greater than or equal to the second reference level, generates a second internal voltage higher than the first internal voltage and, in a case where the level of the power supply voltage supplied is less than the second reference level, stops operating; a first internal circuit that, in a case where the level of the power supply voltage supplied is greater than or equal to the first reference level, operates with use of the first internal voltage; and a second internal circuit that, in a case where the level of the power supply voltage supplied is greater than or equal to the second reference level, operates with use of the second internal voltage and, in a case where the level of the power supply voltage supplied is less than the second reference level, suspends operation. - View Dependent Claims (17)
-
-
18. A memory system comprising:
-
a power supply terminal electrically connectable through a wired connection to a first host, the power supply terminal to be electrically connectable to a power supply line of the first host; a plurality of couplers configured to perform near-field wireless communication with the first host, each of the plurality of couplers being capable of communicating with each of a plurality of couplers of the first host by using electromagnetic induction; and a control unit configured to establish, in response to power supply from the first host via the power supply line to the power supply terminal, a reception channel and a transmission channel that are independent of each other between the memory system and the first host via the plurality of couplers, wherein the memory system is a memory card to be inserted into the first host and comprises a plurality of the power supply terminals, and the plurality of power supply terminals are arranged rotationally symmetrical with respect to an insertion direction of the memory system, and wherein the plurality of couplers are arranged rotationally symmetrical with respect to the insertion direction of the memory system, and the memory system has a mechanism that determines pairs of a coupler of the memory system and a coupler of the host. - View Dependent Claims (19)
-
Specification