摘要:
Embodiments of the present invention provide a portable MTP framework. In an embodiment, the portable MTP framework includes an MTP communications stack and a portability layer. The portability layer decouples the MTP communications stack from the underlying platform, storage, and transport components, thereby achieving transport protocol, platform, and storage media independence. The portable MTP framework according to embodiments of the present invention includes platform-specific software components, including, for example, communications device drivers (USB, TCP/IP, etc.), a transport controller, a session handler, storage device drivers (USB drive, SD card, Hard disk, etc.), a storage controller, and a platform interface. The portable MTP framework further includes application-specific software components, including, for example, an MTP router, MTP agents, and MTP managers.
摘要:
An extension of the media transfer protocol (MTP) may enable marking an object by specifying information about activity pertaining to the object via an object property. The object property information may be communicated to and/or from a device that supports MTP communications. Object properties may comprise timestamps corresponding to when an object is received, generated and/or accessed or information regarding what activity was performed on the object, who or what entity initiated or executed the activity and/or a history of the activity. Object property information based on a corresponding ObjectPropDesc dataset may be communicated between devices during initiation of communication or via a response to a request such as a GetObjectPropDesc or GetObjectPropValue operation. Information about activity pertaining to the object may be logged and/or audited based on the object properties.
摘要:
Methods, systems and computer program products to implement generic Digital Rights Management (DRM) are provided herein. The methods include opening a session between an initiator and a responder, exchanging one or more of device and system information and sending one of an operation or event based on DRM capabilities, DRM partner, DRM authority, DRM characteristics, DRM Trust and CCEVS profiles. The operation includes one or more of a dataset, response code, operation parameter and response parameter. These extensions may be in the form of one or more of an operation, an event, a dataset or property code.
摘要:
Systems, methods, and computer program products that can be used concurrently or alternatively to detect errors in data as well as to protect access to data are provided. Embodiments enable a coherent data set (CDS) which is a data set guaranteed to be genuine and error-free at run-time. Embodiments provide systems, methods, and computer program programs to create a CDS, identify a CDS, and verify the coherency of a data set purported to be a CDS. Embodiments further enable privileged functions which are functions that can only be accessed by a restricted set of other privileged functions. Embodiments provide systems, methods, and computer program products to create, identify, and protect access to privileged functions.
摘要:
In a method and system for indicating a string preferences extension for the media transfer protocol (MTP), a preferred string format for string transfers to and/or from a device that communicates via said MTP may be specified in one or more extensions of the MTP. The preferred string format for the string transfers may be indicated as a device property within the extensions of the MTP. The preferred string format for the string transfers may be indicated using a field within a DeviceInfo Dataset of the MTP extensions. The device may communicate the preferred string format to another device upon initiation of communication or in response to a request such as a GetDeviceInfo operation. The response may comprise an MTP DeviceInfo dataset. A default string format may be specified as one of said MTP extensions. A string format that differs from the preferred string format may be selected for string transfers.
摘要:
A method and system to transfer data from one or more data sources to one or more data sinks using a pipelined buffer interconnect fabric is described. The method comprises receiving a request for a data transfer from the data source to the data sink, assigning a first buffer and a first bus to the data source, locking the first buffer and the first bus so as to enable only the data source to transfer data to the first buffer via the first bus, receiving a signal from the data source indicating completion of data transfer to the first buffer, unlocking the first buffer and the first bus, assigning the first buffer and the first bus to the data sink, assigning a second buffer and a second bus to the data source, locking the second buffer and the second bus so as to enable only the data source to transfer data to the second buffer via the second bus and enabling the data sink to read data from the first buffer via the first bus while the data source writes to the second buffer via the second bus, thereby pipelining the data transfer from the data source to the data sink. The transfer of data from data source to data sink is controlled by programming the pipelined buffer interconnect via one or more of software, control registers and control signals.
摘要:
One or more vendor extensions that may be communicated to and/or from a device that may communicate via media transfer protocol (MTP) may be specified within an extension of the MTP. The vendor extension may comprise vendor specific information such as proprietary supported features. Vendor extensions may be indicated as a device property and may be communicated to another device during initiation of communication. Supported vendor extensions may be specified in an MTP DevicePropDesc dataset as a response to a request such as a MTP GetDevicePropDesc operation. Alternatively, data from a current value field of an MTP DevicePropDesc dataset may be returned in response to a GetDevicePropValue operation. An MTP SetDevicePropValue operation may be utilized for selecting a vendor extension. However, the selection may be accepted or rejected by a device. An event may be issued to other devices when a change of vendor extension has occurred.
摘要:
Methods and systems for preventing reception of licensed protected content prior to reception of a license, in a content rendering device wherein, the license corresponds to the licensed protected content and to the content rendering device. The license may be stored on the content rendering device in a database that may be searchable by a key. The license and the key may be associated within a file comprising the licensed protected content. A proxy computer may handle operations for the content rendering device, a DRM license server and a content server. Media Transfer Protocol (MTP) features regarding GetDeviceInfo, SendObjectInfo and SendObjectPropList operations may be utilized to activate DRM license protection for receiving the license prior to the corresponding license protected content. The content rendering device may reject transmission of and reject rendering the corresponding license protected content if the license is not resident in its database.
摘要:
An MTP/PTP extension may enable MTP/PTP devices to determine which protocol and/or which protocol version to utilize for impending communication. For example protocol and/or protocol version may be requested with a MTP/PTP SetDeviceClass operation that may comprise DeviceClass and/or RequestedVersion parameters. A response to the request may specify a protocol and/or protocol version for impending communication. Moreover, a response may comprise a DeviceInfo dataset comprising one or more fields indicating the protocol and/or protocol version. In various embodiments of the invention, a protocol and/or protocol version may be determined based on a GetDeviceInfo operation. Determination of which protocol and/or which protocol version to utilize for communication between MTP/PTP enabled devices may occur during initiation of communication.
摘要:
A method and system to transfer a data stream from a data source to a data sink are described herein. The system comprises a trigger core, a plurality of dedicated buffers and a plurality of dedicated buses coupled to the plurality of buffers, trigger core, the data source and the data sink. In response to receiving a request for a data transfer from a data source to a data sink, the trigger core assigns a first buffer and a first bus to the data source for writing data, locks the first buffer and first bus, releases the first buffer and the first bus upon indication from the data source of completion of data transfer to the first buffer, assigns the first buffer and first bus to the data sink for reading data and assigns a second buffer and second bus to the data source for writing data thereby pipelining the data transfer from the data source to the data sink.