Method and arrangement for synchronising data streams in networks and a corresponding computer program and corresponding computer-readable storage medium

摘要

A method and an arrangement synchronizes data streams in networks, via a corresponding computer program and corresponding computer-readable storage medium which can be used, in particular, for synchronizing different audio playback devices (audio adapters) within a home network. Said home network can be a conventional computer network comprising both wireline and wireless components. According, in order to synchronize the data output in networks in which at least one data stream is transmitted by a network unit to at least two output units of the network, where said stream is outputted, first common time information is made available to at least the output units and the output of the data in the data stream is synchronized at least in terms of the phase and/or frequency on the basis of the first common time information.

主权项

1. A method for synchronising data output in networks, wherein at least one data stream is transmitted by a network unit to at least two output units of the network and is output by at least part of the output units, the method comprising:
providing periodically, by a global clock, first information about a global time at least to the at least two output units, approximating, on the at least two output units, the global time by evaluating: of the first information about the global time and of second information about a local time, the second information about the local time is provided by a local clock of each of the at least two output units, and wherein the second information about the local time is the instant of time that the first information about the global time was received by the respective at least two output units, of a length of time cycles of the global clock and the local clock, and of a duration of transmission of the first information about the global time from the global clock to the at least two output units, wherein the duration of transmission is determined by taking into account a variance in transfer time between the global clock and the at least two output units, and synchronising output of the data stream, at least with regard to phase and frequency, on the basis of the approximated global time information and independently of the information about the local time provided, by the local clocks of the at least two output units.