Microsoft Technology Licensing, LLC

Richard C Machin

Jameel Hyder

Sanjay Bhatt

An integrating component exposes a connection interface for creating and maintaining connections. A proxy client component is disclosed that interacts with a known application-level interface and converts known application-level interface commands into appropriate commands for the connection interface of the integrating component. The proxy client component interacts with the integrating component to represent underlying connection-oriented devices and attendant device characteristics to the known application-level interface. This allows an application programmer to take advantage of a connection-oriented I/O subsystem and underlying connection-oriented devices without requiring the programmer to learn another interface. Benefits include the ability to dynamically redirect a data stream received over a created connection from one data transport to another under application control. This is useful in multimedia applications where different types of data may come over the same connection.

Method, system, and computer program product for representing and connection-oriented device in a known format

In an I/O subsystem comprising device drivers for controlling connection-oriented hardware adapters, connection-oriented data transports, and an integrating component allowing data transport drivers and hardware device drivers to be 'bound' together to form data communication channels. The integrating component exposes a connection interface for creating and maintaining connections. Furthermore, a proxy client component is disclosed that interacts with a known application-level interface, such as TAPI, and converts such known application-level interface commands into appropriate commands for the connection interface of the integrating component. Additionally, the proxy client component will interact with the integrating component in order to represent the underlying connection-oriented devices and attendant device characteristics to the known application-level interface. All this allows the application programmer to take advantage of a connection-oriented I/O subsystem and underlying connection-oriented devices without requiring the programmer to learn yet another interface. Added benefits include the ability to dynamically redirect a data stream received over a created connection from one data transport to another under application control. This is useful in multimedia applications where different types of data may come over the same connection.

Method, system, and computer program product for representing and connecting an underlying connection-oriented device in a known format

Methods and apparatuses are provided which allow a receiving device to dynamically control and/or otherwise influence a sending device's decision regarding the level of error correction that is applied to streamed media. One method includes having the receiving device generate a request for streamed media that specifies an initial requested error correction level. In this manner, the receiving device is allowed to initially negotiate an error correction level with the sending device that will be providing the streamed media. The receiving device may also dynamically modify the requested level of error correction applied to the streaming media. The sending and receiving devices may also initially and/or dynamically negotiate different error correction encoding schemes. Different error encoding scheme(s) and/or error correction levels can also be selectively applied to different types of streamed media data.

Negotiated/dynamic error correction for streamed media

The present invention allows data to be accessible by kernel mode filters and other processing components while simultaneously allowing connection-oriented device drivers to be written in a simplified fashion in an integrating component environment. Furthermore, this is done without requiring proprietary mechanisms in the device driver itself in order to place the data stream into the kernel mode filter environment. This is done by providing a special raw data client transport that is written to the transport interface of an integrating component. Driver development is simplified by programming to the driver interface of the integrating component in a standardized fashion.

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Bellevue, WA, United States of America

Richard C Machin