초록 ▼

A large capacity HDD is handled as a portable recording medium. In a state where a portable hard disk (PHD) unit is mounted on a cradle, data is written and read between the PHD unit and a host device. By having a first engagement section on the side of the PHD unit and a second engagement section

A large capacity HDD is handled as a portable recording medium. In a state where a portable hard disk (PHD) unit is mounted on a cradle, data is written and read between the PHD unit and a host device. By having a first engagement section on the side of the PHD unit and a second engagement section on the side of a mounting section of the cradle mutually engaged while the PHD unit is mounted on the mounting section, a state where the PHD unit is mounted on the mounting section is maintained.

대표청구항 ▼

What is claimed is: 1. A hard disk system, comprising: a hard disk unit, including: a recording/reading section, including; a hard disk; a rotation section that rotates said hard disk; a magnetic head for performing recording/reading of data with respect to said hard disk rotated by said rotation s

What is claimed is: 1. A hard disk system, comprising: a hard disk unit, including: a recording/reading section, including; a hard disk; a rotation section that rotates said hard disk; a magnetic head for performing recording/reading of data with respect to said hard disk rotated by said rotation section; and a head actuator that actuates said magnetic head in the radial direction of said hard disk; a first connector electrically connected with said recording/reading section; a first housing in which said recording/reading section is housed and from which said first connector faces outward; a first display section provided on said first housing; and a first engagement section provided on said first housing; and a conversion unit, including: a second housing that is provided with a mounting section on which said hard disk unit is mounted externally to said second housing; a second connector facing outward from said mounting section of said second housing; a transmission/reception section for transmitting and receiving data to and from a host device that performs writing and/or reading of data with respect to said hard disk unit; an interface conversion unit for performing, between said second connector and said transmission/reception section, interface conversion between an interface on the side of said hard disk unit and an interface on the side of said host device; a second engagement section provided so as to be movable between a position at which said second engagement section is engaged with said first engagement section and a position at which engagement with said first engagement section is undone; a biasing member that biases said second engagement section in a direction in which said second engagement section engages with said first engagement section; and a second display section provided on said second housing, wherein, said first engagement section and said second engagement section are engaged and said first connector and said second connector are connected when said hard disk unit is in a mounted state where it is mounted on said mounting section of said conversion unit, and data is transmitted and received between said transmission/reception section and said host device, and when said first connector and said second connector are connected and said hard disk unit is connected to said conversion unit, said first display section and said second display section form a continuous display section bridging said first housing and said second housing. 2. The hard disk system according to claim 1, wherein said mounted state is maintained by having said first and second engagement sections mutually engaged. 3. The hard disk system according to claim 1, wherein said hard disk unit further comprises at least one cushioning member between said first housing and said recording/reading section. 4. The hard disk system according to claim 1, wherein said conversion unit further comprises a battery that supplies power to said hard disk unit. 5. The hard disk system according to claim 1, wherein said conversion unit is one of a cradle on which said hard disk unit is mounted and an adaptor that is connected to said hard disk unit. 6. The hard disk system according to claim 5, wherein said conversion unit further comprises an other transmission/reception section for transmitting and receiving data to and from an other electronic device other than said host device. 7. The hard disk system according to claim 1, wherein said conversion unit further comprises an operation section that operates said second engagement section so as to move against the bias of said biasing member in a direction for undoing the engagement with said first engagement section. 8. The hard disk system according to claim 1, wherein said conversion unit further comprises a disconnecting section that cuts an electrical connection between said hard disk unit and said host device, and said operation section operates said disconnecting section to cut said electrical connection between said hard disk unit and said host device before the engagement between said first engagement section and said second engagement section is undone. 9. The hard disk system according to claim 1, wherein said hard disk unit further comprises a first external guide section provided on said first housing, said conversion unit further comprises a second guide section provided on said second housing, and while said first guide section and said second guide section are engaged, said hard disk unit is guided so as to be mounted on said mounting section of said conversion unit. 10. The hard disk system according to claim 1, wherein one of said first housing and said second housing further comprises a protruding section, and said protruding section includes a slanted surface of which one side is taller than the other. 11. The hard disk system according to claim 1, wherein said second display section includes an indicator that indicates a state where said hard disk unit is connected to said conversion unit. 12. The hard disk system according to claim 1, wherein said conversion unit further comprises: a circuit board on which said interface conversion unit is provided; and an electromagnetic shielding plate for shielding said circuit board, and said second housing houses said circuit board. 13. The hard disk system according to claim 1, wherein one of said first connector and said second connector is loosely fit in an opening formed in a surface facing outward from one of said first housing and said second housing, respectively. 14. A hard disk unit that is attachable to and detachable from a conversion unit for performing interface conversion between said hard disk unit and a host device that performs writing and/or reading of data, said hard disk unit comprising: a recording/reading section, including: a hard disk; a rotation section that rotates said hard disk; a magnetic head for performing recording/reading of data with respect to said hard disk rotated by said rotation section; and a head actuator that actuates said magnetic head in the radial direction of said hard disk; a first connector that is electrically connected to said recording/reading section; a first housing in which is housed said recording/reading section and from which said first connector faces outward; a first display section provided on said first housing; and a first engagement section provided on said first housing, wherein, said conversion unit includes: a second housing on which is provided a mounting section on which said hard disk unit is mounted externally to said second housing; a second connector that faces outward from said mounting section of said second housing; a second display section provided on said second housing; a transmission/reception section for transmitting and receiving data to and from said host device; interface conversion unit for performing, between said second connector and said transmission/reception section, interface conversion between an interface on the side of said hard disk unit and an interface on the side of said host device; a second engagement section provided so as to be movable between a position at which said second engagement section is engaged with said first engagement section and a position at which the engagement with said first engagement section is undone; and a biasing member that biases said second engagement section in a direction in which said second engagement section engages with said first engagement section, said first engagement section is engaged with said second engagement section and said first connector is connected to said second connector when said hard disk unit is in a mounted state where it is mounted on said mounting section of said conversion unit, and data is transmitted and received between said transmission/reception section and said host device, and when said first connector and said second connector are connected and said hard disk unit is connected to said conversion unit, said first display section and said second display section form a continuous display section bridging said first housing and said second housing. 15. The hard disk unit according to claim 14, further comprising a first guide section provided on said first housing, wherein said conversion unit includes a second guide section provided on said second housing, and while said first guide section and said second guide section are engaged, said hard disk unit is guided so as to be mounted on said mounting section of said conversion unit. 16. The hard disk unit according to claim 14, wherein said mounted state is maintained by having said first and second engagement sections mutually engaged. 17. The hard disk unit according to claim 14, further comprising at least one cushioning member between said first housing and said recording/reading section. 18. The hard disk unit according to claim 14, wherein said first connector is loosely supported in a plane of said first housing facing outward. 19. The hard disk unit according to claim 14, wherein said first housing further comprises a protruding section, and said protruding section includes a slanted surface of which one side is taller than the other. 20. A conversion unit that is attachable to and detachable from a hard disk unit with respect to which writing andlor reading of data from a host device is performed, wherein said hard disk unit comprises: a recording/reading section, including: a hard disk; a rotation section that rotates said hard disk; a magnetic head for performing recording/reading of data with respect to said hard disk rotated by said rotation section; and a head actuator that actuates said magnetic head in the radial direction of said hard disk; a first connector electrically connected to said recording/reading section; a first housing in which said recording/reading section is housed and from which said first connector faces outward; a first display section provided on said first housing; and a first engagement section provided on said first housing, said conversion unit comprises: a second housing provided with a mounting section on which said hard disk unit is mounted externally to said second housing; a second connector that faces outward from said mounting section of said second housing; a second display section provided on said second housing; a transmission/reception section for transmitting/receiving data to and from said host device that performs writing and/or reading of data with respect to said hard disk unit; an interface conversion unit for performing, between said second connector and said transmission/reception section, interface conversion between an interface on the side of said hard disk unit and an interface on the side of said host device; a second engagement section provided so as to be movable between a position at which said second engagement section is engaged with said first engagement section and a position at which the engagement with said first engagement section is undone; and a biasing member that biases said second engagement section in a direction in which said second engagement section engages with said first engagement section, and when said hard disk unit is mounted on said mounting section, said second engagement section engages with said first engagement section and said second connector is connected to said first connector, and data is transmitted/received between said transmission/reception section and said host device, and when said first connector and said second connector are connected and said hard disk unit is connected to said conversion unit, said first display section and said second display section form a continuous display section bridging said first housing and said second housing. 21. The conversion unit according to claim 20, further comprising an operation section that operates said second engagement section so as to move against the bias of said biasing member in a direction in which the engagement with said first engagement section is undone. 22. The conversion unit according to claim 20, further comprising a cutting section for cutting an electrical connection between said hard disk unit and said host device, wherein said operation section operates said cutting section to cut the electrical connection between said hard disk unit and said host device before the engagement between said first engagement section and said second engagement section is undone. 23. The conversion unit according to claim 20, further comprising a second guide section provided on said second housing, wherein said hard disk unit further comprises a first guide section provided on said first housing, and said hard disk unit is guided so as to be mounted on said mounting section while said second guide section is engaged with said first guide section. 24. The conversion unit according to claim 20, a state where said conversion unit is connected to said hard disk unit is maintained by having said first engagement section and said second engagement section engaged with each other. 25. The conversion unit according to claim 20, further comprising a battery for supplying power to said hard disk unit. 26. The conversion unit according to claim 20, further comprising an other transmission/reception section for transmitting/receiving data to and from an electronic device other than said host device. 27. The conversion unit according to claim 20, wherein said conversion unit is one of a cradle on which said hard disk unit is mounted and an adaptor which is connected to said hard disk unit. 28. The conversion unit according to claim 20, wherein said second display section includes an indicator that indicates a state where said conversion unit is connected to said hard disk unit. 29. The conversion unit according to claim 20, further comprising: a circuit board on which said interface conversion unit is provided; and an electromagnetic shielding plate for shielding said circuit board, wherein, said circuit board is housed in said second housing. 30. The conversion unit according to claim 20, wherein said second connector is loosely supported in a plane of said second housing facing outward. 31. The conversion unit according to claim 20, wherein said second housing further comprises a protruding section, and said protruding section includes a slanted surface of which one side is taller than the other.