Patent ID: 8831508
Filing Date: 2014-09-09
Classification: H04R,H04W,Y02D

Abstract:
1. A system, comprising: a master device; and at least one slave device, the master device comprising a transmitter, the at least one slave device comprising a receiver, wherein the master and slave devices are adapted to establish a uni-directional wireless link for forwarding an upstream signal from the master to the slave device when the master and slave devices are located within a certain distance from each other, wherein the master device is adapted to provide that the upstream signal comprises a payload signal comprising packets of data representing an audio signal and at least one control signal, the at least one control signal is/are embedded in the payload signal and repeated according to a predefined scheme, and wherein the at least one control signal represents an intended current setting of an operational parameter of the slave device, configured to provide that the frequency of occurrence of control bits is dynamically determined according to available bandwidth, the available bandwidth being a residual bandwidth remaining from a current link bandwidth, determined by a transmission rate, and a bandwidth occupied by the payload signal, wherein master device is provided with a security key and at least one slave device that is/are intended to receive a transmitted signal from the master device is provided with a corresponding predefined key, and wherein the security key received in the at least one slave device is compared to the predefined key of the device in question, wherein the at least one control signal is/are assembled in a status packet of the transmitted signal and the reception of the status packet initiates an update of the setting of the operational parameter(s) of the slave device with the value(s) contained in the received status packet, wherein the length and/or frequency of occurrence in the payload signal of a status packet is optimized with regard to minimizing latency.