Patent ID: 7813824
Filing Date: 2010-10-12
Classification: H04S

Abstract:
1. A transmission signal processing device, comprising: a transmission signal data demultiplexing circuit for receiving transmission signal data in which a video signal and a multi-channel audio signal are multiplexed together and for demultiplexing the received transmission signal data into video signal data and multi-channel audio signal data; a decoder circuit for decoding the multi-channel audio signal data to output a plurality of multi-channel audio signal data including at least front center channel audio signal data and low frequency channel audio signal data; a transmission signal data multiplexing circuit for multiplexing together the video signal data and the front center channel audio signal data to obtain output transmission signal data; a control circuit for controlling the transmission signal data demultiplexing circuit, the decoder circuit and the transmission signal data multiplexing circuit; a volume level control data output circuit for outputting a volume level control data from the control circuit; and a volume adjustment circuit for adjusting a volume level of the multi-channel audio signal based on volume level control data output from the control circuit, the volume adjustment circuit including wherein the transmission signal data multiplexing circuit at least one of: