1. A rights management system for managing use of items having usage rights associated therewith, said system comprising:
an activation device adapted to issue a software package that enforces usage rights to control use of an item, said software package comprising a public key and a private key associated with a subscribed user;
a user device adapted to receive said software package, receive a license having usage rights specifying a manner of use and being associated with the item, and allow said subscribed user to access said item in accordance with said license;
means for receiving a license request for the item on behalf of the subscribed user;
a license device adapted to issue said license associated with said item;
a subscription managing device including a subscription list having the public key associated with the subscribed user; and
a distribution point requesting and receiving the license from the license device, said distribution point further pre-packaging the received license with said item,
wherein said license device issues the license based on the identity of the subscribed user by communicating with said subscription managing device and verifying that the public key associated with said subscribed user seeking access to and use of the item is in said subscription list prior to issuing said license, and
said pre-packaged license and the item are delivered or made available to said subscribed user.
2. The rights management system of claim 1, wherein license requests from said distribution point include a list of subscribed users and their respective public keys and a content ID for which licenses are to be issued.
3. The rights management system of claim 1, wherein license requests from said distribution point are for multiple protected content for which the licenses are to be issued.
4. The rights management system of claim 1, further comprising a plurality of subscribed users, each of said subscribed users having a public key as an identification mechanism.
5. The rights management system of claim 4, wherein said subscription managing device maintains a list of the identity of the subscribed users via said public key associated with each of said subscribed users.
6. The rights management system of claim 5, further comprising a plurality of items of protected content.
7. The rights management system of claim 6, wherein said plurality of items of protected content comprise at least one of a text file, an audio file, a video file, and digital multimedia files.
8. The rights management system of claim 1, further comprising a plurality of items of protected content.
9. The rights management system of claim 1, wherein said distribution point is adapted to pre-package said license from said license device with said item for each user in said subscription list.
10. The rights management system of claim 9, wherein said distribution point is further adapted to count the number of items accessed by said subscribed user.
11. The rights management system of claim 10, wherein said subscription managing device is further adapted to remove said subscribed user from said subscription list when a predetermined number of items is accessed by said subscribed user.
12. The rights management system of claim 1, wherein said distribution point is an on-line storefront application.
13. The rights management system of claim 1, wherein said subscription managing device also includes a mail server directory.
14. The rights management system of claim 1, wherein said license further comprises one or more state variables representing a status of at least one of said item, said usage right, and said license.
15. The rights management system of claim 14, wherein said subscribed user is only allowed to access said item until said subscription expires or after a period of time lapses, in accordance with said usage right and said one or more state variables.
16. The rights management system of claim 1, wherein system is implemented with one or more hardware andor software components.
17. A method for managing use of items having usage rights associated therewith, said method comprising the steps of:
providing, by an activation device, a software package to a user device of a subscribed user, said software package enforcing a license having usage rights to control use of an item and having a public key and a private key associated with said subscribed user;
storing, by a subscription managing device, the public key associated with said subscribed user in a subscription list corresponding to said item;
receiving, by a distribution point, a request from said subscribed user to access and use said item;
requesting, by said distribution point, the license from a license device;
issuing a license based on the identity of the subscribed user by:
verifying that said subscribed user requesting access to said item is listed in said subscription list based on verifying that the public key associated with said user is in said subscription list prior to issuing said license; and
issuing, by said license device, the license that grants usage rights to said subscribed user to use said item, if said public key associated with said user is in said subscription list;
receiving, by said distribution point, the license from the license device;
pre-packaging, by said distribution point, the received license with said item; and
delivering or making available, by said distribution point, said pre-packaged license with said item to said subscribed user.
18. The method of claim 17, further comprising a plurality of items of protected content adapted to be accessed by said subscribed user.
19. The method of claim 18, further comprising plural subscribed users and further comprising the step of issuing a plurality of licenses granting usage rights to each of said plural subscribed users to use said plurality of item of protected content.
20. The method of claim 19, further comprising the step of verifying that each of said plural subscribed users are listed in said subscription list prior to issuing each license that grants usage right to use each of said plurality of protected content.
21. The method of claim 19, further comprising the step of counting the number of items of protected content used by each of said plural subscribed users.
22. The method of claim 21, further comprising the step of removing said public keys associated with the subscribed users when a predetermined number of items of protected content is used by the subscribed users.
23. The method of claim 17, wherein said license further comprises one or more state variables representing a status of at least one of said item, said usage right, and said license.
24. The method of claim 23, wherein said subscribed user is only allowed to access said item until said subscription expires or after a period of time lapses, in accordance with said usage right and said one or more state variables.
25. The method of claim 17, wherein said method is implemented with one or more hardware andor software components configured to perform the steps of the method.
26. The method of claim 17, wherein said method is implemented with one or more computer readable instructions embedded on a computer readable medium and configured to cause one or more computer processors to perform the steps of the method.
27. The system of claim 1, wherein said user device is adapted to receive a client component that includes an engine for parsing or rendering protected items, said client component is installed in the user device after receipt at the user device, and said client component is configured for interpreting said license.
28. The system of claim 1, wherein said system provides subscribed users access to a plurality of items having respective usage rights and controlled by said software package.
29. The method of claim 17, further comprising providing a client component including an engine for parsing or rendering protected items to said user device, said client component being installed in the user device after receipt at the user device, and said client component configured for interpreting said license.
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 fluid dynamic bearing motor, comprising:
a stationary member; a rotating member;
a fluid dynamic thrust bearing disposed along an axial surface of a sleeve, the thrust bearing configured to axially support the relative rotation of the rotating member and to pump bearing fluid towards a corner of the sleeve;
a fluid dynamic journal bearing disposed radially inboard of the thrust bearing along a radial surface of the sleeve, the radial surface being adjacent to the axial surface, the journal bearing configured to radially support the relative rotation of the rotating member and to pump bearing fluid towards the corner of the sleeve; and
a recirculation channel, wherein the recirculation channel is fluidly coupled to at least one capillary seal, and one of either the journal bearing or the thrust bearing is configured with a relatively stronger asymmetry to induce bearing fluid recirculation.
2. The fluid dynamic bearing motor oil of claim 1, further comprising a limiter attached to the rotating member and configured to limit axial displacement of the rotating member.
3. The fluid dynamic bearing motor of claim 2, wherein the limiter includes a shoulder that extends radially beneath the sleeve to limit axial displacement of the rotating member.
4. The fluid dynamic bearing motor of claim 2, wherein the limiter includes a shoulder that extends radially beneath a flange of the sleeve to limit axial displacement of the rotating member.
5. The fluid dynamic bearing motor of claim 2, wherein the limiter includes a shoulder that extends radially beneath a flange of the stationary member to limit axial displacement of the rotating member.
6. The fluid dynamic bearing motor of claim 1, wherein the recirculation channel extends through the sleeve.
7. The fluid dynamic bearing motor of claim 6, wherein the recirculation channel is configured such that the induced circulation and centrifugal forces purge air from the bearing fluid through the at least one capillary seal.
8. The fluid dynamic bearing motor of claim 7, further comprising a vent hole extending axially through the rotating member and coupled to the at least one capillary seal to facilitate air purging.
9. The fluid dynamic bearing motor of claim 1, further comprising a recirculation channel extending from interior to the journal bearing and the thrust bearing, through the stationary member, to exterior of the journal bearing and the thrust bearing.
10. The fluid dynamic bearing motor of claim 9, wherein the recirculation channel is fluidly coupled to a capillary seal, and one of either the journal bearing or the thrust bearing is configured with a relatively stronger asymmetry to induce bearing fluid recirculation such that the induced circulation and centrifugal forces purge air from the bearing fluid through the capillary seal.
11. The fluid dynamic bearing motor of claim 1, further comprising one or more fluid channels disposed between the stationary member and the sleeve, wherein the one or more fluid channels are fluidly coupled to a capillary seal, and one of either the journal bearing or the thrust bearing is configured with a relatively stronger asymmetry to induce bearing fluid recirculation such that the induced circulation and centrifugal forces purge air from the bearing fluid through the capillary seal.
12. The fluid dynamic bearing motor of claim 1, further comprising a limiter attached to the rotating member, a magnet attached to the limiter and a stator, the limiter and the stator being axially offset to produce a downward acting axial bias force on the rotating member.
13. A fluid dynamic bearing motor, comprising:
a stationary member;
a hub configured to rotate relative to the stationary member and to support one or more discs;
a sleeve coupled to the stationary member;
a fluid dynamic thrust bearing disposed along an axial surface of the sleeve, the thrust bearing configured to axially support the relative rotation of the hub and to pump bearing fluid towards the corner of the sleeve;
a fluid dynamic journal bearing disposed radially inboard of the thrust bearing along a radial surface of the sleeve, the radial surface being adjacent to the axial surface, the journal bearing configured to radially support the relative rotation of the hub and to pump bearing fluid towards the corner of the sleeve; and
a recirculation channel, wherein the recirculation channel is fluidly coupled to at least one capillary seal, and one of either the journal bearing or the thrust bearing is configured with a relatively stronger asymmetry to induce bearing fluid recirculation.
14. The fluid dynamic bearing motor of claim 13, further comprising a limiter attached to the hub, the limiter configured to limit axial displacement of the hub, a magnet attached to the limiter and a stator, the magnet and the stator being axially offset to produce a downward acting axial bias force on the hub.
15. The fluid dynamic bearing motor of claim 14, wherein the recirculation channel extends radially through the sleeve, and further wherein the recirculation channel is fluidly configured such that the induced circulation and centrifugal forces purge air from the bearing fluid through the at least one capillary seal.
16. The fluid dynamic bearing motor of claim 15, wherein the stationary member comprises a shaft, the shaft including an axially extending vent hole and being attachable to a top cover.
17. The fluid dynamic bearing motor of claim 14, further comprising one or more fluid channels disposed between the stationary member and the sleeve, wherein the one or more fluid channels are fluidly coupled to a capillary seal, and one of either the journal bearing or the thrust bearing is configured with a relatively stronger asymmetry to induce bearing fluid recirculation such that the induced circulation and centrifugal forces purge air from the bearing fluid through the capillary seat.
18. A fluid dynamic bearing motor, comprising:
a stationary member;
a hub configured to rotate relative to the stationary member and to support one or more discs;
a sleeve coupled to the hub;
a fluid dynamic thrust bearing disposed along an axial surface of the sleeve, the thrust bearing configured to axially support the relative rotation of the hub and to pump bearing fluid towards a corner of the sleeve;
a fluid dynamic journal bearing disposed radially inboard of the thrust bearing along a radial surface of the sleeve, the redial surface being adjacent to the axial surface, the journal bearing configured to radially support the relative rotation of the hub and to pump bearing fluid towards the corner of the sleeve; and
a recirculation channel fluidly coupled to a capillary seal, wherein one of either the journal bearing or the thrust bearing is configured with a relatively stronger asymmetry to induce bearing fluid recirculation.
19. The fluid dynamic bearing motor of claim 18, further comprising a limiter attached to the hub, the limiter including a shoulder that extends radially beneath a flange of the stationary member to limit axial displacement of the hub, a magnet attached to the limiter and a stator, the magnet and the stator being axially offset to produce a downward acting axial bias force on the hub.
20. The fluid dynamic bearing motor of claim 19, wherein the recirculation channel extends from interior to the journal bearing and the thrust bearing, through the stationary member, to exterior of the journal bearing and the thrust bearing, wherein the recirculation channel is configured such that induced circulation and centrifugal forces purge air from the bearing fluid through the capillary seal.