Patent ID: 8000350
Filing Date: 2011-08-16
Classification: G09G,H04J,H04L,H04N

Abstract:
1. A system, comprising: an encoder that encodes a synchronization signal such that a control word is generated each time the synchronization signal changes, wherein the encoder outputs an encoder output that includes the control word each time the synchronization signal changes and includes no control word when the synchronization signal is not changing, and wherein the synchronization signal is used for horizontal synchronization and vertical synchronization; a multiplexer that receives payload data and the encoder output and that outputs a data stream by multiplexing the payload data and the encoder output, wherein the data stream comprises the payload data if no blanking period of the payload data is present, wherein the data stream comprises the encoder output if the blanking period of the payload data is present, and wherein if the blanking period of the payload data is present the data stream includes no control word when the synchronization signal is not changing; a data transmission system that transmits the data stream via a digital multimedia link; a demultiplexer that receives the data stream transmitted by the data transmission system, wherein the demultiplexer demultiplexes the payload data and the encoder output from the data stream such that the payload data and the control word are separated from each other; and a decoder that decodes the control word such that the synchronization signal is recovered.