1. A method of controlling a writing or reading operation of a disk drive, the method comprising:
determining whether a writing control signal or a reading control signal, and a flying height control signal to control a flying height of a head are in enabled states; and
when the writing control signal or the reading control signal and the flying height control signal are in the enabled states, performing the writing operation or the reading operation.
2. The method of claim 1, further comprising controlling the flying height control signal to be in the enabled state without performing the writing operation or the reading operation, when the reading control signal or the writing control signal is in the enabled state and the flying height control signal is in a disabled state.
3. The method of claim 1, wherein the flying height control signal is a flying height on demand (FOD) enable signal to control whether electric current is supplied to a heater coil of the head.
4. The method of claim 1, wherein the performing the writing operation or the reading operation is when the writing control signal or the reading control signal and the flying height control signal are in the enabled states, performing the writing operation or the reading operation and controlling the flying height of the head.
5. The method of claim 4, further comprising controlling the flying height control signal to be in the enabled state without performing the writing operation or the reading operation, when the reading control signal or the writing control signal is in the enabled state and the flying height control signal is in the disabled state.
6. The method of claim 4, wherein the flying height control signal is a flying height on demand (FOD) enable signal to control whether electric current is supplied to a heater coil of the head.
7. A method of controlling a writing or reading operation of a disk drive, the method comprising:
determining whether a writing control signal or a reading control signal, and a flying height control signal to control a flying height of a head are in enabled states; and
when the writing control signal or the reading control signal and the flying height control signal are in the enabled states, controlling the flying height of the head.
8. The method of claim 7, further comprising controlling the flying height control signal to be in the enabled state without performing the writing operation or the reading operation, when the reading control signal or the writing control signal is in the enabled state and the flying height control signal is in the disabled state.
9. The method of claim 7, wherein the flying height control signal is a flying height on demand (FOD) enable signal to control whether electric current is supplied to a heater coil of the head.
10. A disk drive, comprising:
a readwrite head to read data from a disk or to write data to the disk; and
a controller to control the readwrite head to perform a reading or writing operation of the disk according to whether a reading control signal or a writing control signal and a flying height control signal of the readwrite head are in enabled states.
11. The disk drive of claim 10, wherein the controller prevents the readwrite head from performing the reading or writing operation when the reading control signal or the writing control signal is in the enabled state and the flying height control signal is in a disabled state.
12. The disk drive of claim 10, wherein the controller switches the flying height control signal to the enabled state when the reading control signal or the writing control signal is in the enabled state and the flying height control signal is in a disabled state.
13. The disk drive of claim 12, wherein the controller controls the readwrite head to perform the reading or writing operation when the reading control signal or the writing control signal is in the enabled state and the flying height control signal has been switched from the disabled state to the enabled state.
14. The disk drive of claim 13, wherein the controller controls the flying height of the readwrite head when the reading or writing operation is being performed.
15. The disk drive of claim 12, wherein the controller controls the flying height of the readwrite head and prevents the readwrite head from performing the reading or writing operation when the reading control signal or the writing control signal is in the enabled state and the flying height control signal has been switched from the disabled state to the enabled state.
16. The disk drive of claim 10, wherein the controller comprises:
a first unit to output the reading control signal or the writing control signal to control the reading or writing operation of the readwrite head, respectively; and
a second unit to output the flying height control signal to control a flying height of the readwrite head such that the reading or writing operation is performed when the reading control signal or the writing control signal and the flying height control signal are in enabled states, and to prevent the reading or writing operation from being performed when the reading control signal or the writing control signal is in the enabled state and the flying height control signal is in a disabled state.
17. The controller of claim 16, wherein the second unit switches the flying height control signal to the enabled state when the reading control signal or the writing control signal is in the enabled state and the flying height control signal is in the disabled state.
18. The controller of claim 17, wherein the first unit controls the readwrite head to perform the reading operation or the writing operation when the reading control signal or the writing control signal is in the enabled state and the flying height control signal has been switched from the disabled state to the enabled state.
19. The controller of claim 18, wherein the second unit controls the flying height of the readwrite head when the reading or writing operation is being performed.
20. The controller of claim 17, wherein the second unit controls the flying height of the readwrite head and the first unit prevents the readwrite head from performing the reading or writing operation when the reading control signal or the writing control signal is in the enabled state and the flying height control signal has been switched from the disabled state to the enabled state.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A system toilet for dogs comprising:
a lower container having a waste storage portion to contain waste and being open at a top face thereof;
a disposable liquid-permeable panel disposed to cover an upper portion of the waste storage portion;
a panel support portion disposed between the lower container and the liquid-permeable panel for supporting the liquid-permeable panel; and
a panel-holding section for holding down the liquid-permeable panel from a topside at least one position near a periphery of the liquid-permeable panel.
2. The system toilet for dogs according to claim 1, further comprising a top container having a wall section raised surrounding the liquid-permeable panel, wherein
the panel-holding section is constituted of an interior lower end of the wall section.
3. The system toilet for dogs according to claim 1, wherein
the panel support portion is constituted of a plate member having multiple through holes and supports substantially an entire area of a bottom face of the liquid-permeable panel, wherein
a position of the panel-holding section for holding down the liquid-permeable panel is in a region where the through holes are formed in the panel support portion.
4. The system toilet for dogs according to claim 1, further comprising a frame member having substantially a same profile as the liquid-permeable panel and being disposed on a top face of the liquid-permeable panel, wherein
the panel-holding section is constituted of the frame member.
5. The system toilet for dogs according to claim 1, wherein
the panel-holding section is constituted of a pin-like member that is inserted from the topside of the liquid-permeable panel toward the panel support portion, penetrating through the liquid-permeable panel.
6. The system toilet for dogs according to claim 2, wherein
the panel support portion is constituted of a plate member having multiple through holes and supports substantially an entire area of a bottom face of the liquid-permeable panel, wherein
a position of the panel-holding section for holding down the liquid-permeable panel is in a region where the through holes are formed in the panel support portion.