Patent ID: 8948254
Filing Date: 2015-02-03
Classification: G06F,G09G,H04N

Abstract:
1. A video signal transmitting device comprising: a video signal output unit to output a non-compressed video signal to be transmitted; a compression method information obtaining unit to obtain information indicating a compression method that a receiving device can handle, from the receiving device via a transfer path; a transfer path information obtaining unit to obtain transfer path information indicating the state of said transfer path via said transfer path from said receiving device; a video signal compression unit to perform compression processing as to a non-compressed video signal output from said video signal output unit, with a compression method corresponding to the compression method indicated by the compression method information received with said compression method information receiving unit, and output a compressed video signal; a video signal selecting unit to select the non-compressed video signal output from said video signal output unit or the compressed video signal output from said video signal compression unit, based on said transfer path information obtained by said transfer path information obtaining unit; a video signal transmitting unit to transmit the video signal selected with said video signal selecting unit to said receiving device via a cable or wireless transfer path; a bit rate adjusting unit to adjust the bit rate of the video signal transmitted to said receiving device by said video signal transmitting unit, based on said transfer path information obtained with said transfer path information obtaining unit; and a compression information supplying unit to supply the control information of said video signal compression unit and said video signal selecting unit by said transmission control unit to said receiving device via said transfer path, wherein the information indicating a compression method is received at the transmitting device through a High Definition Multimedia Interface (HDMI) terminal of the transmitting device, and wherein when the receiving device changes format information stored within the receiving device indicating capability of the receiving device to display a format of a video signal, the change of the format information is communicated to the transmitting device through a hot plug detect (HPD) line of the HDMI terminal.