Patent Description:
The widespread use of computers, digital cameras, digital music and video players, and the Internet has resulted in the creation and use of digital media. Digital media has also largely replaced more traditional analog audio and video formats with the introduction and popular acceptance of audio compact discs (CDs) and digital video discs (DVDs). In general, digital media consists of various formats of data that stores audio, video, and images in binary files. These binary files are typically stored on a medium accessible to computer devices, such as CD-ROMs, hard drives, floppy disks and memory sticks.

The storage of digital media on commonly used computer medium allows for easy generation and transfer of digital media. For example, it has become popular to generate digital photos using a digital camera and then to transfer the digital photos onto computers. Computer software permits the user to manipulate the digital photos. The user may then transfer the digital photos to friends using e-mail, or post the digital photos on a web site accessible on the World Wide Web. These types of applications, which take advantage of connectivity among different devices, have also contributed to the widespread popularity of digital media.

Digital media may be stored in a variety of formats. Special hardware or software compatible with the formats of the digital media is required to playback or view the digital media. For example, to listen to music stored in the popular MP3 format, a consumer must have a special MP3 player (i.e., either software running on a general purpose computer or a stand alone MP3 player). There are numerous formats for video, including high quality DVDs and various compression based MPEG and proprietary standards. To playback various formats of digital video, the consumer must use a device that reads the proper format of the digital media.

Because of the numerous different formats of digital media, the playback or viewing of numerous types of digital media today requires multiple types of devices. The playback of digital media stored in different formats is less problematic on a computer because the computer may play the digital media using software programs. However, a consumer may desire to play the media on other types of devices. For example, the consumer may desire to play digital audio files on a home stereo and view digital video on a television. Currently, stereos and televisions are not equipped to playback all formats of digital media. In addition, consumers may want to playback media located at different locations. For example, a consumer may want to view digital photos stored on a relative's computer in a different city on the consumer's television. Accordingly, it is desirable to provide a media system that integrates various types of digital media stored in disparate locations into a single system.

<CIT> discloses systems and methods for allowing users to store, retrieve, and manipulate on-demand media content and data stored on a remote server network in an on-demand media delivery system.

<CIT> discloses methods and apparatus for client aggregation of television programming in a networked personal video recording system.

According to an aspect, there is provided a system according to claim <NUM>, and/or a method according to claim <NUM>. A computer program according to claim <NUM> may also be provided.

A media system integrating a plurality of media devices located in different geographic locations is provided. The media devices may be located in geographically disparate locations, and the media system integrates the media devices over a wide area network. For example, the integrated media system permits playback of media items at one location even though the media items reside at a different location.

<FIG> illustrates one embodiment for implementing an integrated media system across a wide area network. As shown in <FIG>, two homes with multiple media devices are shown. A first home with multiple media devices is labeled HomeA, and a second home, also with multiple media devices, is labeled HomeB. As used herein, a media device includes any type of device, such as a consumer electronic device, that provides one or more services for or operations on media. Examples of services a media device may provide include playback, storage, generation and manipulation of media, etc. For the example of <FIG>, both HomeA and HomeB include "n" media devices. HomeA and HomeB communicate through wide area network <NUM>. Wide area network <NUM> may comprise one or more types of communication networks, such as a public packet based network (e.g., the Internet). Each home may connect to wide area network <NUM> through a high-bandwidth connection (e.g., cable, DSL, satellite, etc.).

In some embodiments of the invention, components do not necessary refer to specific hardware or software configurations, but refer to roles that the components perform or partially perform. One or more devices that perform the role of playing back any form of digital media is referred to as a media device ("MD"). For example, a television, which can play video and display photos, performs the role of a media deice. A stereo performs the role of a media device by playing audio. A digital media player ("DMP"), as used herein, connotes a role to play digital media (e.g., process a digital media file and output signals suitable for play on a media device). For example, an MPEG player that processes MPEG video files and generates a video output is an example of a digital media player. A consumer electronics device may perform more than one role. For example, a computer may run a digital media player, such as Quicktime player, that reads a digital video file, and plays the video on the computer display. For this example, the computer performs roles as both a digital media player and a media device.

A device that performs the role of a digital media server ("DMS") is a device that serves digital media to a network of consumer electronic devices (e.g., digital media players or a media devices). A device may also perform the role of a digital media server if the device performs protocol bridging services. A protocol bridging service accepts requests or commands in a first protocol and translates the command into a second protocol to interface two consumer electronic devices. A digital media server may include storage, although the role of media storage is separate from the role of a digital media server. A device, performing the role of a digital media server, may serve media stored within the digital media server or may acquire media external to the digital media server.

<FIG> is a block diagram illustrating one embodiment for streaming media across a wide area network. The example of <FIG> illustrates streaming media from two different locations (e.g., homes) to a third location. However, the techniques described herein apply to streaming media across a wide area network from one or more devices located in one or more disparate geographical locations. For the example of <FIG>, a user at homeA desires to receive media items stored on devices at homeB and homeC. HomeA, homeB and homeC are all coupled to wide area network <NUM>. Wide area network ("WAN") media services <NUM> are also accessible via wide area network <NUM>. As described more fully below, in some embodiments, WAN media services perform functions to integrate media over the wide area network.

For this embodiment, homeA includes digital media player <NUM> and media device <NUM>. HomeB, includes router <NUM> and digital media server <NUM>. Similarly, homeC has, in one configuration, router <NUM> and digital media server <NUM>. Although homec and homeB are shown as having digital media servers to perform the role of serving media items across the wide area network; any device that serves media items to the wide area network may be used. Also, home media networks for homeB and homec are shown with a digital media servers and a plurality of media items. However, a home media network may comprise any combination of one or more digital media servers, storage devices, digital media players, and media devices.

The routers (<NUM> and <NUM>) are used to provide network access from homeB and homec to the wide area network. In one embodiment, routers <NUM> and <NUM> are network address translation ("NAT") routers. For this configuration, there are no inbound TCP connections. The connections are all outbound to provide connectivity from the digital media servers to the wide area network.

As shown in <FIG>, homeB includes media items, available for access by digital media player <NUM>, <NUM> - <NUM>. Homec includes media items <NUM> - <NUM> available for access by digital media player <NUM>. In operation, digital media player <NUM>, at homeA, initiates a connection with WAN media services <NUM>, and uniquely identifies itself. In response, WAN media services <NUM> determines media available to the digital media player <NUM> and the location of the available media. Thus WAN media services <NUM> acts as a well-known broker to provide automatic discovery of other nodes across the WAN.

The WAN media services stores "group information. " In general, the group information identifies media available to a device (e.g., digital media player). In one embodiment, the group information links a device to a user. A user may be associated with multiple devices. The user may be associated with one or more groups. For example, a user may create a ski group to link individuals interested in skiing. The users in a group specify content available to members in that group. For example, a member of the ski group may specify a device and a content directory - subdirectory for the device that stores all content available to members of the ski group (e.g., content related to skiing).

The WAN media system can provide a user interface to allow users to set-up groups, identify individuals and devices with a group, identify content directories that store content for the group, and invite others to join the group. In one embodiment, a user may be the owner of a group. Through use of a digital media player or computer system that implements a user interface, the user may navigate to the group information to set-up or edit the group information. Other group members may also edit group information associated with the user or the user's device. In other embodiments, the WAN media services may provide a search mechanism to permit the user to search for content for which the user has been granted permissions. Although the above description provides a framework to link devices, users, and content in groups, group information, as used herein, may contain any information used to link one ore more users or devices to content.

For the example of <FIG>, WAN media services <NUM> determines that the digital media player <NUM>, at homeA, has permission to access media items <NUM> - <NUM> at homeB and media items <NUM> - <NUM> at homeC. WAN media services <NUM> then brokers a connection from homeB and homeC to homeA. A view of the available media may be aggregated to permit a user, manually or automatically, to select one or more media items. Embodiments for aggregating media (e.g., service, server and client aggregation) are described more fully below. Digital media player <NUM> initiates selection of one or more media items. In response, one or more media items are streamed from homeB and/or homeC to digital media player <NUM>. In one embodiment, as described more fully below, homeB, homeC, and/or WAN media services <NUM> may perform one or more functions to transcoding the media item and/or to acquire keys for digital rights management. The streaming media is delivered to digital media player <NUM>, and subsequently played on media device <NUM>.

<FIG> illustrates one embodiment for copying media items across a wide area network. This configuration, similar to the example embodiment of <FIG>, illustrates a three home scenario, wherein homeB desires to access media available at homeB and homeC. However, for the embodiment of <FIG>, homeA copies the media on to a storage medium. Thus, for this embodiment, homeA includes storage <NUM> coupled to digital media player <NUM>. The process to copy media items is similar to the process to stream media items discussed above in conjunction with <FIG>. The digital rights management protections may be different to protect or prevent copying of media items. Also, since transfer is not required to be in "real time," content may be trickled down during idle times. After homeA initiates a copy operation of one or more media items from homeC and/or homeB, media items are transferred over the wide area network <NUM> from homeB and/or homeC to homeA for storage on storage <NUM>.

The WAN media system of the present invention may also implement synchronization services. For this embodiment, a process may be initiated to copy media items every time a media item is added or modified to a content directory. For example, a user may update one or more digital photos in a content directory. The synchronization service, running on a device coupled to the storage of the content directory, identifies that a new digital photo has been added to the content directory, and copies the new digital photos to the specified devices, accessible to the wide area network. In one embodiment, the synchronization services, at a first location, may access the group information to identify one or more devices, located at disparate locations, so as to copy the new or modified media items to the devices.

<FIG> illustrates another embodiment for integrating media across a wide area network. For this embodiment, homeA (<NUM>) includes a home media network. As shown in <FIG>, homeA includes a digital media server <NUM> coupled to a local area network (LAN) <NUM>. For the example implementation of <FIG>, digital media server <NUM> is coupled to local area network <NUM>. Local area network <NUM> may couple one or more digital media servers, digital media players, and media devices. One embodiment for a home media network is described below in conjunction with a description of <FIG>. For this example, digital media server <NUM> presents media items to local area network <NUM>. To integrate media over wide area network <NUM>, digital media server <NUM> initiates a connection with WAN media services <NUM> through LAN <NUM>. Similar to the embodiments of <FIG> and <FIG>, WAN media services <NUM> identifies digital media servers available to digital media server <NUM> (i.e., based on group information), and brokers one or more connections to permit discovery, selection and delivery (copying or streaming) of media from homeC and homeB to homeA.

<FIG> is a flow diagram illustrating one embodiment of a method <NUM> for integrating media items across a wide area network (WAN). As used herein, a serving endpoint refers to a first point (e.g., first home) coupled to the WAN and a consuming endpoint refers to a second point (e.g., second home) coupled to the WAN. As discussed below, the method <NUM> for integrating media items may comprise a direct connection maintained between the serving and consuming endpoints or a connection maintained through a WAN media service.

The method <NUM> begins when the serving endpoint initiates (at <NUM>) a connection with a WAN media service. The WAN media service then determines (at <NUM>) whether the inbound connection to the serving endpoint is possible. If so, the WAN media service then instructs (at <NUM>) the consuming endpoint to connect to the serving endpoint and a direct connection is made (at <NUM>) between the consuming and serving endpoints. The method <NUM> then ends.

If the WAN media service determines (at <NUM> - No) that the inbound connection to the serving endpoint is not possible, the WAN media service then determines (at <NUM>) whether an inbound connection to the consuming endpoint is possible. If so, the WAN media service then instructs (at <NUM>) the serving endpoint to connect to the consuming endpoint and a direct connection is made (at <NUM>) between the consuming and serving endpoints. The method <NUM> then ends.

If the WAN media service determines (at <NUM> - No) that the inbound connection to the consuming endpoint is not possible, media then flows (at <NUM>) through an outbound connection and the WAN media service. The method <NUM> then ends.

<FIG> is a flow diagram illustrating an alternative embodiment of a method <NUM> for integrating media items across a wide area network. As discussed below, the alternative method <NUM> for integrating media items comprises a connection maintained through a WAN media service. For purposes of nomenclature, a destination device, as used herein, refers to a device that receives media items. For example, a destination device may comprise a digital media server, digital media player, etc. A source device, as used herein, refers to a device that delivers one or more media items to the wide area network. For the example in the embodiments of <FIG>, <FIG> and <FIG>, the source device comprises a digital media server.

The method <NUM> begins the process to integrate media items across a wide area network when the destination device initiates a connection with WAN media services and uniquely identifies itself (block <NUM>, <FIG>). In one embodiment, to accomplish this, each device is programmed to access, over the WAN, the WAN media services at a predetermined universal resource locator ("URL") address. Each device has a unique number, similar to a serial number. The destination device transmits this unique number to the WAN media services. In some embodiments, public/private key cryptography may be used to guarantee authenticity.

Using the destination devices identification, the WAN media service identifies a user associated with the destination device from the "group information. " There may be several source devices associated with a user or group of users. The WAN media service identifies source devices available for the destination device (block <NUM>, <FIG>). As described more fully below, the WAN media service identifies one or more source devices that have granted permission to the destination device for media access.

The WAN media service brokers a connection from one or more source devices and the destination device (block <NUM>, <FIG>). To accomplish this, the WAN media service and the source device(s) establish a connection through the router at each home location. The WAN media service directs this communications channel to the destination device. Once the WAN media service brokers a connection from the source device(s) to the destination device, the connection can be maintained directly between the source device(s) and the destination device, or continue through the WAN services. The destination device discovers the content and of services available (block <NUM>, <FIG>). For example, the destination device may discover file formats (i.e., to determine capability of the digital media player), digital rights management policies for media items available over the wide area network, available bandwidth between source and destination nodes, and roles for source and destination devices.

The user at the destination device may receive a list of media items available across the wide area network. In order to discover a list of available media items, the media items, available to the destination device from multiple source devices, are aggregated. In one embodiment, the WAN media service aggregates a list of media items from multiple source devices. This type of media aggregation is referred to herein as "service aggregation. " Service aggregation is described more fully below in conjunction with a discussion of <FIG>. Another type of aggregation that may be used is referred to as "server aggregation. " In server aggregation, a digital media server aggregates a list of available media items for presentation to a local area network. For example, the destination device may comprise a digital media player coupled to a local area network. A digital media server may also be coupled to the local area network. To perform server side aggregation, the digital media server aggregates a list of all available media items for presentation to the media devices and digital media players (destination device) on the local area network. Server aggregation is described more fully below in conjunction with a discussion of <FIG>. A third type of media aggregation is referred to as "client side aggregation. " In client side aggregation, the destination device itself discovers, and aggregates all media items available to it. Client aggregation is described more fully below in conjunction with a discussion of <FIG>.

If the technique uses service aggregation, then the WAN media service aggregates content based on permissions and possibly capabilities of the network, i.e., high bandwidth items may not show up for streaming media on a slow connection (blocks <NUM> and <NUM>, <FIG>). If the technique uses either client or server side aggregation, the destination device, or a server coupled to the local area network of the destination device, aggregates content based on permissions (blocks <NUM> and <NUM>, <FIG>). The destination device initiates either a copy or stream operation for one or more media items (block <NUM>, <FIG>). In one embodiment, the user, from the digital media player or digital media server, selects one more media items displayed as a result of the discovery services. In other embodiments, the stream or copy operation may be initiated by an automated process, such as the synchronization service described above.

In one embodiment, content from commercial content providers is integrated into the wide area network. <FIG> illustrates one embodiment for integrating media from a content provider into the wide area network. For the example of <FIG>, homeA (<NUM>) is coupled to wide area network <NUM>. WAN media service <NUM> is also accessible to the wide area network <NUM>. One or more content providers are depicted as content provider <NUM> in <FIG>. A content provider, as used herein, refers to a commercial enterprise that distributes media. The media may include digital audio, digital video or photos or text. Typically, the content provider receives payment for delivery (e.g., streaming or copying) of media. In one embodiment, WAN media services <NUM> may serve as a broker to deliver commercial content from one or more content providers to consumers. Under this scenario, WAN media services <NUM> may facilitate purchase of content, selected by the user, from several different content providers. In one embodiment, the content providers may receive payment from the WAN media services, and in turn, provide the user with one integrated invoice.

The content provider and a user may either conduct a streaming operation or a copy operation. For a copy operation, homeA includes a storage device (not shown). In operation, a user, at homeA, initiates selection of available media from content provider <NUM>. In one embodiment, WAN media services <NUM> may perform "service aggregation" to provide a list of available content from one or more content providers. In other embodiments, aggregation may occur at the home (e.g., server-side or client-side media aggregation). The user selects media, from a device (e.g., digital media player) from the available list of media items. In response to the selection, WAN media services <NUM> brokers a connection to transfer (either copy or stream) media items from a content provider to the user's digital media player. The WAN media services may also act as a broker to pay content providers on behalf of users. This permits users of the WAN media system to maintain one account for purchase of content owned by several different content providers.

The digital media player <NUM> establishes a connection with the WAN media service <NUM>. In turn, WAN media service <NUM> establishes a connection with one or more content providers. For this configuration, a device, such as a digital media player, does not require knowledge to directly connect to external content providers. The use of a third party service (e.g., WAN media service) facilitates connectivity between homes and content providers because most home network connections permit only outbound connections, and therefore content providers have no means of directly accessing user devices at the home.

The embodiments described above use a WAN media service (third party) to broker connections between source and destination devices. In other embodiments, a third party service, such as the WAN media service, is not used. <FIG> illustrates one embodiment for integrating media across a wide area network using static IP addresses. For this embodiment, a destination device (e.g., digital media player) communicates with source devices at homeB and homeC through a direct IP connection. For this embodiment, the group information, which specifies groups and permissions, devices, users, etc. within the groups, is stored at the user locations (e.g., homeA, homeB and homeC). For the example illustrated in <FIG>, digital media player <NUM>, at homeA, is the destination device. A user desires to access media available through the user's group. The user, at homeA, determines that source devices at homeB and homeC are contained within the user's group. The user, using static IP addresses, directly established a connection, over the wide area network, with homeB and homeC. Once a connection is established, services may be obtained similar to the process described above (e.g., discovery, aggregation, transcoding, digital rights management function, copying media, streaming media, etc.). For the example of <FIG>, the digital media player <NUM> obtains the available media items (<NUM> - <NUM>) from digital media server <NUM> and media items (<NUM> - <NUM>) from digital media server <NUM>.

One issue regarding the use of a static IP address approach is that home locations typically do not have a static IP address (i.e., the IP address is dynamic). Typically, an Internet service provider, such as a high-speed Internet service provider that uses digital subscription line ("DSL") or cable modem technology, dynamically assigns IP addresses to its users. Thus, a destination device may have an accurate account of static IP addresses for different devices within its group. In one embodiment, to solve this problem, services may be used to translate between a known domain name address and the dynamic IP address currently assigned to the network access for the source device (e.g., Dynamicons).

Other embodiments may also be implemented to eliminate the use of a third party service (e.g., WAN media service). <FIG> illustrates one embodiment for using multi-cast packets to integrate media across a wide area network. For this embodiment, digital media player <NUM> constitutes the destination device, and as such, desires to integrate media from digital media server <NUM> (homeB) and digital media server <NUM> (homeC). Similar to the static IP embodiment, each location, participating in the media integration, stores group information. If a user desires to integrate media within the user's group, network information to identify the group is extracted. With the information, the destination device formulates multi-cast network packets that identify all network locations for source devices in the user's group. The multi-cast packets may be configured to identify nodes on a local area network, nodes that form an organization, or nodes on a public packet-based network (e.g., Internet). The destination device (e.g., digital media player <NUM>) transmits the multi-cast packets across the wide area network <NUM>. Routers (e.g., routers <NUM> and <NUM>) interpret the network information contained in the multi-cast packets, and subsequently transmit or deny the packets.

In response to receipt of the multi-cast packets, source devices (e.g., digital media servers <NUM> and <NUM>) determine permissions for the source device, from their group information, and permit discovery of media by devices at homeA. For example, homeA may implement client side aggregation of media by digital media player <NUM>. In other embodiments, homeA may include a digital media server that performs server aggregate for devices integrated on homeA's media network. After discovery, a user may select one or more available media items. In response to the selection, digital media player <NUM> formulates multi-cast packets over the wide area network <NUM>. Routers on open Internet often do not allow multi-cast packets to flow through so that typically devices can not be heard across the WAN.

<FIG> illustrates client side aggregation of media in a wide area network in accordance with one embodiment of the present invention. For this example, three media servers (<NUM>, <NUM>, and <NUM>), located at three disparate locations (homeA, homeB and homeC), are coupled to wide area network <NUM>. As shown in <FIG>, each media server stores various media items (e.g., video, audio, photos, etc). For example, media server <NUM>, at homeA, stores media items <NUM>, <NUM>, <NUM>, <NUM>, <NUM> and <NUM>. For this example, DMP <NUM>, located at homeD, is also coupled to wide area network <NUM>. DMP <NUM> may comprise a television, and the media items, stored on media servers <NUM>, <NUM> and <NUM>, may comprise video.

After completing a discovery process, DMP <NUM>, at homeD, determines relevant media items stored on other devices (e.g., media servers) available through wide area network <NUM>. For this example, DMP <NUM>, at homeD, aggregates all media items relevant to DMP <NUM>, for use at media device <NUM> (i.e., playback, control. For example, if media device <NUM> is a television, then media device aggregates a list of all media items, such as video and digital photos, suitable for playback on a television. As shown in <FIG>, DMP <NUM> aggregates all media items stored on media servers <NUM>, <NUM> and <NUM> located at homeA, homeB and homeC, respectively.

<FIG> illustrates service aggregation of media in a wide area network in accordance with one embodiment of the present invention. Similar to the example of <FIG>, three media servers (<NUM>, <NUM>, and <NUM>) for homeA, homeB and homeC are coupled to wide area network <NUM>. Each media server (<NUM>, <NUM>, and <NUM>) stores various media items. For this example, media device <NUM> (homeD) is also coupled to wide area network <NUM>. For service aggregation, WAN media service <NUM> determines media items stored on other devices (e.g., media servers) available through wide area network <NUM> after completing a discovery process. For this example, WAN media service <NUM> aggregates all media items for use at media device <NUM>. The list of media items aggregated by WAN media services <NUM> is shown in <FIG>.

<FIG> illustrates server aggregation of media in a wide area network in accordance with one embodiment of the present invention. Similar to the examples of <FIG> and <FIG>, three media servers (<NUM>, <NUM>, and <NUM>) for homeA, homeB and homeC are coupled to wide area network <NUM>, and digital media server <NUM>, located at homeD, is also coupled to wide area network <NUM>. As shown in <FIG>, digital media server <NUM> is coupled to homeD local area network <NUM>. HomeD local area network <NUM> couples one or more digital media players, media devices and/or digital media servers. For server aggregation, digital media server <NUM> determines media items stored on media servers (<NUM>, <NUM>, and <NUM>) and available through wide area network <NUM>. The list of media items aggregated by digital media server is shown in <FIG>.

In order to aggregate media items (e.g., service, client or server), the WAN media system supports discovery services. In one embodiment, the discovery process implements asynchronous based messaging. The discovery protocol operates on any network that supports packet based messaging or on a serialized network. In one embodiment, the discovery protocol includes an "announce" command, a "discovery" command, and a "bye-bye" command. The announce command is used by a device to announce its presence on the wide area media network. A discovery command is a request for an announcement (i.e., queries whether any media devices are accessible by the wide area network). The "bye-bye" command is used by a media device to announce that the media device is leaving the network. In one embodiment, there are two types of announcements and two types of "bye-bye" commands: one for devices and one for services.

In one embodiment, a remote procedure call (RPC) mechanism uses a packet-based protocol. In general, an RPC mechanism permits a device to control another device on the network. The services include methods and an identification number to permit a device on the wide area network to construct RPC based packets with the appropriate arguments. The protocol is effectuated through requests and responses. The RPC packets include a header. In one embodiment, the header contains: version information, a command class (maps to a particular service), the command (the method the device is requesting or the response coming from the method), an identification (identification of requests or identification of responses corresponding to a request), and a length. After the header, the RPC protocol format specifies data (i.e., arguments for requests and returns values for responses).

In addition to discovery, the WAN integrated media system may perform one or more "transcoding" services. As used herein, "transcoding" may refer to any or all of the following: transcaling (changing the resolution of a digital media file), transcypting (changing the encryption of a digital media file), transcoding (changing the format of a digital media file), and transrating (changing the bit rate of a digital media file). In one embodiment, transcoding occurs at the source location for the media device (i.e., the location streaming the media or transferring a copy of a digital media file). Under certain circumstances, if transcoding occurs at the source location, then the transfer may consume less bandwidth. For example, if the bit rate of streaming media is reduced, then the amount of network bandwidth required to transmit the streaming media is also reduced. In other embodiments, transcoding services may be performed at the WAN media services or at the destination location. Some embodiments for transcoding are described in <CIT>, inventors Daniel Putterman and Brad Dietrich.

The WAN integrated media system may also implement digital rights management ("DRM") protections on the media items and files. In one embodiment, the source location (e.g., digital media server) implements a primary DRM scheme. In other embodiments, the digital media server, at the source location, may implement a link layer encoding scheme. The WAN integrated media system may use any DRM scheme when distributing media across the wide area network.

A home may comprise a home network that includes one or more media devices coupled together via a home network. <FIG> illustrates one embodiment for two home networks coupled by a wide area network. For the example of <FIG>, home <NUM> and home <NUM> comprise a plurality of media devices. The media devices, when connected through a home network, provide an integrated media system. Specifically, home network <NUM> couples media devices in home <NUM>, and home network <NUM> couples media devices in home <NUM>. Homes <NUM> and <NUM> communicate through wide area network <NUM>. Networks <NUM> and <NUM> may comprise any type of network, including wireless networks. For example, networks <NUM> and <NUM> may comprise networks implemented in accordance with standards, such as IEEE <NUM>, HPNA, Home Plug, IEEE <NUM>. 11x, IEEE <NUM>, Blue Tooth, and USB <NUM> / <NUM>.

A media device provides at least one service to the integrated media system. For the example of <FIG>, media devices include a computer system (<NUM> for home <NUM> and <NUM> for home <NUM>). In one embodiment, the computer system (<NUM> and <NUM>) may operate as a media manager. A media manager is an optional component for the integrated media system. In general, the media manager permits the user to organize, download, and edit media in the personal computer "PC" environment. The media manager may store media for integration into the wide area media space (i.e., store media for use by other components in the wide area media space). In one embodiment, the media manager permits the user to perform system functions on a PC that are less suitable for implementation on a television based user interface.

The example integrated home media system also includes a digital media server (digital media server <NUM> for home <NUM> and digital media server <NUM> for home <NUM>). The digital media servers (<NUM> and <NUM>) store or present media to the system. Although digital media servers (<NUM> and <NUM>) are depicted as hard disk drives in <FIG>, the digital media severs present media items to the home media networks, which may or may not reside on permanent storage. In one embodiment, digital media servers (<NUM> and <NUM>) store digital media, such as digital audio, digital video (e.g., DVD, MPEG, etc.), and digital images. The digital media servers (<NUM> and <NUM>) store media for distribution throughout the wide area media space. The digital media servers (<NUM> and <NUM>) are coupled to different types of media players, including televisions <NUM> and <NUM>, as well as an audio players <NUM> and <NUM> (e.g., stereo systems). In one embodiment, the media servers (<NUM> and <NUM>) execute software to perform a variety of functions for the integrated media system.

For the embodiment of <FIG>, one or more DMPs (<NUM>, <NUM>, <NUM>, <NUM>, <NUM>, and <NUM>) are integrated into the home network. In general, the DMPs permit interoperability of standard media devices. For example, a DMP may perform the role of a digital media player by playing back digital media stored on digital media server <NUM> on standard legacy television <NUM>. In one embodiment, the DMPs may comprise stand-alone devices interfaced with the associated media device. In other embodiments, the DMPs may be integrated directly into the associated media device. For the example of <FIG>, DMPs (<NUM> and <NUM>) may be integrated into televisions (<NUM> and <NUM>), DMPs (<NUM> and <NUM>) may be integrated into audio systems (<NUM> and <NUM>), and DMP and DMS (<NUM> and <NUM>) may be software executing on computers (<NUM> and <NUM>).

The DMPs receive media from digital media servers <NUM> and <NUM>, and process the media for display or playback on televisions <NUM> and <NUM> or audio systems <NUM> and <NUM>. For example, digital media servers <NUM> and <NUM> may transmit a digital movie over networks <NUM> and <NUM>, and the DMP may process the digital movie for display on televisions <NUM> and <NUM>. In one embodiment, DMPs <NUM> and <NUM> process the digital movie "on the fly" to provide NTSC, PAL, or HD formatted video for playback on televisions <NUM> and <NUM>.

As shown in <FIG>, the integrated media system also optionally integrates one or more audio media devices into the wide area media space. For the embodiment of <FIG>, a. DMP (<NUM> and <NUM>) receives digital music (e.g., MP3 format) from digital media servers <NUM> and <NUM>, and the DMP processes the digital music for playback on standard audio systems <NUM> and <NUM>. In one embodiment, the audio DMP (<NUM> and <NUM>) includes a small display (e.g., liquid crystal display "LCD" display) and buttons for use as a user interface. The media servers <NUM> and <NUM> transmit items and identifiers for the items for display on the audio DMPs. For example, audio DMP <NUM> may display lists of tracks playing and/or available for playback on audio system <NUM>. The user selects items displayed on the screen using the buttons to command the system. For example, the audio DMP screen may display a list of albums available in the wide area media space, and the user, through use of the buttons, may command the user interface to display a list of tracks for a selected album. Then, the user may select a track displayed on the screen for playback on audio system <NUM>.

In one embodiment, the user interface for the integrated media system is implemented using digital media servers (<NUM> and <NUM>) for display on televisions <NUM> and <NUM>. For this embodiment, the user, using a remote control for televisions <NUM> and <NUM>, selects items displayed on the televisions to command the system. The user interface utilizes the DMPs as well as the media devices (e.g., televisions <NUM> & <NUM>). In one embodiment, the user interface includes a plurality of interactive screens displayed on the displays of media devices to permit a user to access the functionality of the system. A screen of the user interface includes one or more items for selection by a user. The user navigates through the user interface using a remote control device (not shown). The user, through use of a remote control, controls the display of screens in the user interface and selects items displayed on the screens. A user interface displayed on a television permits the user, using a remote control, to perform a variety of functions pertaining to the media available in the wide area media space.

The wide area media space may be extended beyond multiple private networks (e.g., home networks) to access media available as a service. In one embodiment, the media system directly integrates content from external sources into the wide area media space. For example, as shown in <FIG>, computer <NUM> may access content external to the local network <NUM>. The external content may include any type of media, such as digital music and video. The media system may be coupled to external content <NUM> through a broadband connection (i.e., high bandwidth communications link) to permit downloading of media content. The external content may be delivered to the media system through use of the Internet, or the external content may be delivered through use of private distribution networks (e.g., digital cable subscription).

The media system may be implemented in either hardware or software. For the software implementation, the media system is software that includes a plurality of computer executable instructions for implementation on a general-purpose computer system. Prior to loading into a general-purpose computer system, the media system software may reside as encoded information on a computer readable medium, such as a magnetic floppy disk, magnetic tape, and compact disc read only memory (CD - ROM). In one hardware implementation, the media system may comprise a dedicated processor including processor instructions for performing 'the functions described herein. Circuits may also be developed to perform the functions described herein.

Claim 1:
A media system comprising:
a plurality of digital media devices (<NUM>, <NUM>) connected to a plurality of digital media servers (<NUM>, <NUM>) over a wide area network (<NUM>); and
a wide area network media service (<NUM>), accessible by the plurality of digital media devices via the wide area network (<NUM>), the wide area network media service (<NUM>) configured to enable a user of a digital media device of the plurality of digital media devices to set up a group of users associated with the other digital media devices of the plurality of digital media devices via an interface implemented on digital media devices of the plurality of digital media devices;
wherein:
the wide area network media service (<NUM>) is operable to enable the user via said interface to invite to the wide area network service (<NUM>) at least one other user associated with a digital media device for inclusion in the group;
the user interface is further configured to enable stored content that the at least one other user has permission to access via the media server and the wide area network (<NUM>) to be identified; and
the media system further comprising a device coupled to a storage of a content directory running a synchronization service to synchronize the stored content to digital media devices identified via the interface, when a media item is added or modified to the digital media device content directory.