HOT UNPLUGGABLE MEDIA STORAGE DEVICE

• US 20040177180A1
• Filed: 10/21/2002
• Published: 09/09/2004
• Est. Priority Date: 07/23/2002
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Computer Incorporated (Apple Inc.)
• Inventors: Robbin, Jeffrey L., Heller, David, Marciniak, Craig A.
• Granted Patent: US 6,799,226 B1
• Time in Patent Office: Days
• US Class Current: 710/72
• CPC Class Codes: G06F 2003/0697 device management, e.g. handlers, drivers, I/O schedulers
• CPC Class Codes: G06F 3/0601 Interfaces specially adapted for storage systems
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/0632 by initialisation or re-initialisation of storage systems
• CPC Class Codes: G06F 3/0674 Disk device
• CPC Class Codes: G06F 9/4413 Plug-and-play [PnP]

Abstract

Improved techniques for rendering a peripheral device removable (e.g., unpluggable) are disclosed. According to one aspect of the invention, the peripheral device is rendered removable from a host computer without preparatory user actions. In effect, the peripheral device can be automatically prepared for removal in the event that its user removes (unplugs) it from its host computer. According to another aspect of the invention, the peripheral device includes a data storage device that is mounted to a file system of the host computer when the host computer desires access to the data storage device. Otherwise, the data storage device is normally unmounted so that if the peripheral device were to be removed (e.g., unplugged) no harm or damage to data stored therein would occur. These aspects of the invention can be utilized alone or in combination with one another. The invention is particularly well suited for peripheral devices that are media players which are “hot” unpluggable without detrimental consequences.

Claims

1. A method for accessing a portable media player by a host computer over a data link, said method comprising:

(a) receiving an indication that the portable media player has been attached to the host computer via the data link.

(b) logically connecting the portable media player to a file system of the host computer;

(c) performing, following said attaching (a) and said logically connecting (b), first media-based processing at the host computer which accesses the portable media player; and

(d) logically disconnecting the portable media player from the file system without detaching the portable media player from the host computer via the data link, said logically disconnecting being performed after performance of the first media-based processing.

2. A method as recited in claim 1, wherein said logically connecting, said performing and said logically disconnecting are computer implemented operations that are automatically performed.

3. A method as recited in claim 1, wherein following said logically disconnecting (d) of the portable media player, the portable media player is capable of being detached from the host computer via the data link without detrimental consequences to operation or storage of the host computer or the portable media player.

4. A method as recited in claim 1, wherein the data link is provided over a cable or a wireless link.

5. A method as recited in claim 1, wherein when the portable media player is coupled to the host computer via the data link, the portable media player is a peripheral device for the host computer.

6. A method as recited in claim 1, wherein the portable media player includes at least a disk storage device, and wherein when the portable media player is coupled to the host computer via the data link, the portable media player operates as a remote disk storage device for the host computer.

7. A method as recited in claim 1, wherein following said logically disconnecting (d) of the portable media player, the portable media player is capable of being detached from the host computer via the data link without detrimental consequences to operation or storage of the host computer or the portable media player and without any preparatory user interactions with either the host computer or the portable media player.

8. A method as recited in claim 1, wherein following said logically disconnecting (d) of the portable media player, the portable media player is capable of being detached from the host computer via the data link without any preparatory user interactions with either the host computer or the portable media player.

9. A method as recited in claim 1, wherein said method further comprises:

(e) subsequently determining whether subsequent media-based processing at the host computer requires access to the portable media player that is logically disconnected therefrom but remains attached to the host computer via the data link.

10. A method as recited in claim 9, wherein, when said determining (e) determines that the subsequent media-based processing at the host computer requires access to the portable media player, said method further comprises:

(f) logically connecting the portable media player to a file system of the host computer;

(g) performing, following said logically connecting (f), the subsequent media-based processing at the host computer which accesses the portable media player; and

(h) logically disconnecting the portable media player from the file system without detaching the portable media player from the host computer via the data link, said logically disconnecting being performed after performance of the subsequent media-based processing.

11. A method as recited in claim 10, wherein the portable media player includes at least a disk storage device, and wherein when the portable media player is coupled to the host computer via the data link, the portable media player operates as a remote disk storage device for the host computer.

12. A computer-implemented method for accessing a portable media player from a host computer, the portable media player having at least a storage device for storing media content, said method comprising:

detecting presence of the portable media player on a bus associated with the host computer;

mounting the storage device of the portable media player with a file system of the host computer;

accessing the storage device from the host computer over the bus to perform initial media-based processing;

unmounting the storage device of the portable media player from the file system of the host computer once said accessing for the initial media-based processing is completed;

determining, subsequent to said unmounting, whether access to the storage device is needed to perform subsequent media-based processing;

remounting the storage device of the portable media player with the file system of the host computer when said determining determines that access to the storage device is needed;

accessing the storage device from the host computer over the bus to perform the subsequent media-based processing; and

unmounting the storage device of the portable media player from the file system of the host computer once said accessing for the subsequent media-based processing is completed.

13. A method as recited in claim 12, wherein the portable media player can be physically detached from the host computer at any time so long as the-storage device therein is already unmounted from the file system of the host computer.

14. A method as recited in claim 12, wherein so long as the storage device is already unmounted from the file system of the host computer, the portable media player can be physically detached from the host computer at any time without any preparatory user interactions with either the host computer or the portable media player.

15. A method as recited in claim 12, wherein so long as the storage device is already unmounted from the file system of the host computer, the portable media player can be physically detached from the host computer at any time without any preparatory user interactions with either the host computer or the portable media player and without detrimental consequences to operation or storage of the host computer or the portable media player.

16. A method as recited in claim 12, wherein the detection of the presence of the portable media player on the bus indicates that the portable media player has just recently been connected to the host computer through a data link.

17. A method as recited in claim 16, wherein the data link is provided by a cable or a wireless link.

18. A method as recited in claim 16, wherein the bus is a peripheral bus.

19. A method as recited in claim 18, wherein the peripheral bus is a USB or IEEE 1394 bus.

20. A method as recited in claim 12, wherein the storage device is a disk storage device.

21. A method as recited in claim 12, wherein the portable media player includes a media database storing player media information, and wherein the host computer includes a media database storing host media information.

22. A method as recited in claim 12, wherein the portable media player comprises an audio player, and wherein the storage device stores media content, the media content including at least audio files of songs.

23. A method as recited in claim 12, wherein the portable media player comprises a video player, and wherein the storage device stores media content, the media content including at least video files of videos.

24. A method as recited in claim 12, wherein the portable media player comprises an image viewer, and wherein the storage device stores media content, the media content including at least image files of images.

25. A method as recited in claim 12, wherein the portable media player is a pocket-sized media player.

26. A computer readable medium including at least computer program code for accessing a portable media player from a host computer, the portable media player having at least a storage device for storing media content, said computer readable medium comprising:

computer program code for detecting presence of the portable media player on a bus associated with the host computer;

computer program code for mounting the storage device of the portable media player with a file system of the host computer;

computer program code for accessing the storage device from the host computer over the bus to perform initial media-based processing; and

computer program code for unmounting the storage device of the portable media player from the file system of the host computer once the initial media-based processing is completed.

27. A computer readable medium as recited in claim 26, wherein said computer readable medium further comprises:

computer program code for determining, subsequent to being unmounted, whether access to the storage device is needed to perform subsequent media-based processing;

computer program code for remounting the storage device of the portable media player with the file system of the host computer when it is determined that access to the storage device is needed;

computer program code for accessing the storage device from the host computer over the bus to perform the subsequent media-based processing; and

computer program code for unmounting the storage device of the portable media player from the file system of the host computer once said accessing for the subsequent media-based processing is completed.

28. A computer readable medium as recited in claim 26, wherein said computer readable medium further comprises:

computer program code for detecting physical disconnection of the portable media player from the bus associated with the host computer.