Disk device and electronic device with internal space in housing
According to one embodiment, a disk device includes a housing, recording medium, a magnetic head, an internal wireless communication device, and an internal component. The housing has an internal space. The internal wireless communication device generates at least either of: an electric signal representing information to be written to the recording medium, the electric signal corresponding to light, a magnetic field, or an electric field generated by an external wireless communication device; and light, a magnetic field, or an electric field toward the external wireless communication device, the light, the magnetic field, or the electric field corresponding to an electric signal representing information read from the recording medium. The internal component in the internal space is electrically connected to the magnetic head, the internal component that communicates with an external component located outside the housing through the internal wireless communication device and the external wireless communication device.
1. A disk device comprising:
a housing having an internal space;
a recording medium having a disk form, housed in the internal space, and including a recording layer;
a magnetic head housed in the internal space, the magnetic head configured to read and write information from and to the recording medium;
an internal wireless communication device, housed in the internal space;
an external wireless communication device mounted on an outside of the housing;
an internal component housed in the internal space and electrically connected to the magnetic head; and
an external component including a first circuit board attached to the outside of the housing, wherein
the internal component and the external component are each configured to communicate with each other through the internal wireless communication device and the external wireless communication device,
the internal wireless communication device is configured to perform at least one of:
(i) generate light, a magnetic field, or an electric field towards the external wireless communication device, and
(ii) generate an electric signal corresponding to the light, a magnetic field, or an electric field received from the external wireless communication device, the electric signal representing information to be written to or read from the recording medium by the magnetic head,
the external wireless communication device is configured to perform at least one of:
(iii) generate light, a magnetic field, or an electric field towards the internal wireless communication device, and
(iv) generate an electric signal corresponding to the light, a magnetic field, or an electric field received from the internal wireless communication device, the electric signal representing information to be written to or read from the recording medium by the magnetic head,
the housing includes a first wall that covers the internal space,
the first circuit board includes a first surface facing the first wall, and a recess recessed from the first surface, and
the external wireless communication device is mounted in the recess of the first circuit board.
2. A disk device comprising:
a housing having an internal space;
a recording medium having a disk form, housed in the internal space, and including a recording layer;
a magnetic head housed in the internal space, the magnetic head configured to read and write information from and to the recording medium;
an internal wireless communication device, housed in the internal space;
an external wireless communication device mounted on an outside of the housing;
an internal component housed in the internal space and electrically connected to the magnetic head; and
an external component including a first circuit board attached to the outside of the housing, wherein
the internal component and the external component are each configured to communicate with each other through the internal wireless communication device and the external wireless communication device,
the internal wireless communication device is configured to perform at least one of:
(i) generate light, a magnetic field, or an electric field towards the external wireless communication device, and
(ii) generate an electric signal corresponding to the light, a magnetic field, or an electric field received from the external wireless communication device, the electric signal representing information to be written to or read from the recording medium by the magnetic head,
the external wireless communication device is configured to perform at least one of:
(iii) generate light, a magnetic field, or an electric field towards the internal wireless communication device, and
(iv) generate an electric signal corresponding to the light, a magnetic field, or an electric field received from the internal wireless communication device, the electric signal representing information to be written to or read from the recording medium by the magnetic head,
the housing includes a first wall that covers the internal space and a first through-hole penetrating the first wall, and
the internal wireless communication device generates an electric signal corresponding to light emitted from the external wireless communication device through the first through-hole, and/or emits light to the external wireless communication device through the first through-hole.
3. The disk device according to claim 2 , further comprising:
a light shielding member located between the first circuit board and the housing, to surround the external wireless communication device to block light.
4. The disk device according to claim 2 , wherein
the housing includes a transparent or translucent first sealing material that seals the first through-hole, and
the internal wireless communication device generates an electric signal corresponding to light emitted from the external wireless communication device through the first sealing material, and/or emits light to the external wireless communication device through the first sealing material.
5. The disk device according to claim 1 , further comprising:
a motor housed in the internal space to rotate the recording medium;
a flexible printed wiring board that passes through a third through-hole in the housing, to be electrically connected to the magnetic head, the internal wireless communication device, the external component, and the motor, and that receives supply of power from the external component; and
a second sealing material that seals the third through-hole, wherein
the motor is supplied with power from the external component through the flexible printed wiring board.
6. The disk device according to claim 5 , further comprising
an internal power supply mounted on the flexible printed wiring board in the internal space, to store power supplied from the external component through the flexible printed wiring board, and supply the power to at least one of the magnetic head, the internal wireless communication device, and the internal component.
7. The disk device according to claim 1 , further comprising:
a communication unit comprising:
the internal wireless communication device,
the external wireless communication device, and
a casing that holds the internal wireless communication device and the external wireless communication device apart from each other and covers the internal wireless communication device and the external wireless communication device, wherein
the housing includes a first wall that covers the internal space, and a fourth through-hole that penetrates the first wall, and
the communication unit is at least partly disposed inside the fourth through-hole.
8. The disk device according to claim 1 , further comprising:
a second circuit board attached to an outside of the housing and electrically connected to the external component, wherein
the housing includes a first wall that covers the internal space,
the second circuit board includes a first surface facing the first wall, a second surface opposite the first surface, and a fifth through-hole opening to the first surface and the second surface, and
the internal wireless communication device is configured to perform at least one of:
(v) generate an electric signal corresponding to light, a magnetic field, or an electric field generated by the external wireless communication device and having passed through the fifth through-hole, and
(vi) generate light, a magnetic field, or an electric field toward the external wireless communication device through the fifth through-hole.
9. A disk device comprising:
a housing having an internal space;
a recording medium having a disk form, housed in the internal space, and including a recording layer;
a magnetic head housed in the internal space, the magnetic head configured to read and write information from and to the recording medium;
an internal wireless communication device, housed in the internal space;
an external wireless communication device mounted on an outside of the housing;
an internal component housed in the internal space and electrically connected to the magnetic head;
an external component including a first circuit board attached to the outside of the housing; and
a connection that electrically connects the external component and the internal component, wherein
the internal component and the external component are each configured to communicate with each other through the internal wireless communication device and the external wireless communication device,
the internal wireless communication device is configured to perform at least one of:
(i) generate light, a magnetic field, or an electric field towards the external wireless communication device, and
(ii) generate an electric signal corresponding to the light, a magnetic field, or an electric field received from the external wireless communication device, the electric signal representing information to be written to or read from the recording medium by the magnetic head,
the external wireless communication device is configured to perform at least one of:
(iii) generate light, a magnetic field, or an electric field towards the internal wireless communication device, and
(iv) generate an electric signal corresponding to the light, a magnetic field, or an electric field received from the internal wireless communication device, the electric signal representing information to be written to or read from the recording medium by the magnetic head,
the housing includes a first wall that covers the internal space and is provided with a second through-hole, and a second wall that closes the second through-hole,
the connection includes:
a first connector located on the second wall outside the housing and electrically connected to the external component, and
a second connector located on the second wall inside the internal space and electrically connected to the first connector, and
the internal component is electrically connected to the second connector to receive supply of power from the external component through the first connector and the second connector.