Abstract: A method and system for improving email traffic which can involve portable digital imaging devices is disclosed. In first and second aspects, the method and system allow a portable digital imaging device to receive an attachment associated with an email message. A first type of attachment is allowed by the portable digital imaging device. The attachment is described a second type. In the first aspect, the method and system include determining whether the first type is the same as the second type prior to sending the attachment to the portable digital imaging device and providing the attachment to the portable digital imaging device only if the first type is the same as the second type.

Abstract: A data processing system and a method implement a unique push, or streaming, model for communicating time sensitive encoded data, such as video and audio data, in a communication network. A pacing mechanism is implemented in the data processing system to allow a client to pace a streaming server in a stable way such that a fill level of a client buffer will oscillate around a single threshold value. A simple protocol is implemented to protect pacing primitives, allow recovery for pacing primitives, and to keep a client and a server synchronized during the pacing operation. To implement the pacing mechanism, the streaming server transmits data at a slightly faster rate than it was encoded. Subsequently, a decoder circuit at the client, or receiver, uses the transmitted data at the encoded rate. Thus, the utilization of buffers in the client will gradually increase. When the utilization of buffers reaches a threshold level, the client provides a pacing message to the server.