Memory device

A memory device, comprising:

• a recording array including recording regions each having recording layers for recording data provided thereon in a matrix arrangement, a plurality of first positioning regions and a plurality of second positioning regions, the first and second positioning regions each being provided outside the recording regions;
• a probe array including a plurality of first probes provided oppositely to the recording regions for executing data writing, reading, and erasing to/from the recording layers, a plurality of second probes provided oppositely to the plurality of first positioning regions and used for generating a positioning signal representing position information of the recording regions, and a plurality of third probes provided oppositely to the plurality of second positioning regions and used for generating the positioning signal;
• an actuator configured to change relative positions of the recording array and the probe array with respect to each other;
• and
• a control circuit configured to control an operation of the actuator by using the positioning signal and control data writing, reading, and erasing operations to the recording layers,
• the plurality of first positioning regions including third positioning patterns composed of a plurality of rectangular portions, the rectangular portions being located at different positions from one another by a certain interval relative to the plurality of second probes,
• the plurality of second positioning regions including fourth positioning patterns composed of a plurality of rectangular portions, the rectangular portions being located at different positions from one another by a certain interval relative to the plurality of third probes, and
• the control circuit being configured to generate the positioning signal based on whether or not the second and third probes are in contact with the rectangular portions of the third and fourth positioning patterns.

A memory device, comprising:

• a recording array including recording regions each having recording layers for recording data provided thereon in a matrix arrangement, a first positioning region and a second positioning region, the first and second positioning regions each being provided outside the recording regions;
• a probe array including a plurality of first probes provided oppositely to the recording regions for executing data writing, reading, and erasing to/from the recording layers, and a plurality of second probes provided oppositely to the first positioning region and the second positioning region and used for generating a positioning signal representing position information of the recording regions;
• an actuator configured to change relative positions of the recording array and the probe array with respect to each other;
• and
• a control circuit configured to control an operation of the actuator by using the positioning signal and control data writing, reading, and erasing operations to the recording layers,
• the first positioning region including a first positioning pattern, the first positioning pattern having a plurality of first line portions extending in a first direction, having a first width, and provided at certain first intervals,
• the second positioning region including a second positioning pattern, the second positioning pattern having a plurality of second line portions extending in a second direction intersecting with the first direction, having a second width, and provided at certain second intervals,
• the recording layers being provided to have the first width and be at the first intervals in the second direction, and to have the second width and be at the second intervals in the first direction, and
• the control circuit being configured to control data writing, reading, and erasing to/from the recording layers based on whether or not the second probes are in contact with the line portions of the first and second positioning patterns.