Controlling access to a removable medium from a module and an external device
First Claim
1. An access control apparatus comprising:
- a medium communication module implemented in a computer and configured to perform communication with a removable medium;
an access module implemented in the computer and configured to perform access to the removable medium using the medium communication module;
a wireless communication module implemented in the computer and configured to perform wireless communication with a first external device, and to receive an access request to the removable medium; and
a control module implemented in the computer and configured to assign an access right to access the removable medium to one of the access module and the first external device, the control module assigning the access right in response to a request of assignment of the access right, the request being transmitted from the first external device or the access module,wherein the control module is configured to request one of the access module and the first external device to stop or suspend assignment of the access right when the other of the access module and the first external device requests assignment of the access right in a state where said one of the access module and the first external device is accessing the removable medium, and to notify the other of the access module and the first external device that the assignment of the access right is stopped or suspended after said one of the access module and the first external device stops or suspends the assignment of the access right.
1 Assignment
0 Petitions
Accused Products
Abstract
According to one embodiment, an access control apparatus includes a medium communication module configured to perform communication with a removable medium, a access module configured to perform access to the removable medium using the communication module, a wireless communication module configured to perform wireless communication with a external device, and to receive access request to the removable medium, and a controller configured to assign an access right to access the removable medium to one of the access module and the external device, the control module assigning the access right in response to a request of assignment of the access right, the request being transmitted from the external device or the access module.
9 Citations
14 Claims
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1. An access control apparatus comprising:
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a medium communication module implemented in a computer and configured to perform communication with a removable medium; an access module implemented in the computer and configured to perform access to the removable medium using the medium communication module; a wireless communication module implemented in the computer and configured to perform wireless communication with a first external device, and to receive an access request to the removable medium; and a control module implemented in the computer and configured to assign an access right to access the removable medium to one of the access module and the first external device, the control module assigning the access right in response to a request of assignment of the access right, the request being transmitted from the first external device or the access module, wherein the control module is configured to request one of the access module and the first external device to stop or suspend assignment of the access right when the other of the access module and the first external device requests assignment of the access right in a state where said one of the access module and the first external device is accessing the removable medium, and to notify the other of the access module and the first external device that the assignment of the access right is stopped or suspended after said one of the access module and the first external device stops or suspends the assignment of the access right. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An access control apparatus comprising:
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a medium communication module implemented in a computer and configured to perform communication with a removable medium; an access module implemented in the computer and configured to perform access to the removable medium using the medium communication module; an obtaining module implemented in the computer and configured to obtain a file system related information that is stored in the removable medium, and to cache the file system related information; a wireless communication module implemented in the computer and configured to perform wireless communication with an external device, and to receive access to the removable medium; a control module implemented in the computer and configured to notify one of the access module and the external device that data in the removable medium has been changed when an access right of said one of the access module and the external device is resumed from an inactive state and the data in the removable medium is changed; and a notifying module implemented in the computer and configured to notify the control module whether the data in the removable medium has been changed during an active state when the access module suspends or stops the access right, wherein the obtaining module is configured to delete a cache of the file system related information in response to notification from the control module, and the control module is configured to notify the access module that the data in the removable medium has been changed when the access module resumes the access right in response to notification from the notifying module.
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14. An access control system comprising an access control apparatus and one or more external devices,
the access control apparatus comprising: -
a medium communication module configured to perform communication with a removable medium; an access module configured to perform access to the removable medium; a wireless communication module configured to perform wireless communication with the external devices, and to receive access to the removable medium; and a control module configured to assign an access right to access the removable medium to one of the access module and the external devices, the control module assigning the access right in response to a request of assignment of the access right, the request being transmitted from one of the external devices and the access module, wherein the control module is configured to request one of the access module and the first external device to stop or suspend assignment of the access right when the other of the access module and the first external device requests assignment of the access right in a state where said one of the access module and the first external device is accessing the removable medium, and to notify the other of the access module and the first external device that the assignment of the access right is stopped or suspended after said one of the access module and the first external device stops or suspends the assignment of the access right, each of the external devices comprising; a wireless communication module configured to communicate with the access control apparatus; and an access control module configured to transmit a request to assign the access right by using the wireless communication module, and to access the removable medium when the access right is assigned from the control module.
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Specification