Patent ID: 8479236
Filing Date: 2013-07-02
Classification: G09G,H04L,H04N

Abstract:
1. A transmitter for unidirectionally transmitting, to a receiver using a first differential signal, pixel data of an uncompressed image of one screen during an effective video period representing a period from one vertical synchronization signal to the next vertical synchronization signal excluding horizontal blanking intervals and a vertical blanking interval, the transmitter comprising: converting means for converting transmission data different from the pixel data into a second differential signal formed from a first constituent signal and a second constituent signal, transmitting the first constituent signal to the receiver via a first signal line, and outputting the second constituent signal; first selecting means for selecting one of a first transmission signal related to a control operation and the second constituent signal output from the first converting means and transmitting the selected signal to the receiver via a second signal line; first control means for performing control so that, when the first transmission signal is transmitted to the receiver, the first transmission signal is selected by the first selecting means and, when the second differential signal is transmitted to the receiver, the second constituent signal is selected by the first selecting means; and decoding means for receiving a third differential signal formed from a third constituent signal and a fourth constituent signal transmitted from the receiver and decoding the third differential signal into original data, wherein the transmitter prepares an eHDMI protocol tag and an Extended Display Identification Data information tag upon receipt of EDID data from the receiver and sends the eHDMI protocol tag and EDID information tag to the receiver, and wherein the receiver compares the content of the EDID information tag with the content of the EDID data of the receiver, and when the content of EDID information tag matches the content of the EDID data of the receiver the receiver determines that the transmitter is an enhanced High Definition Multimedia Interface device connected to the receiver using an eHDMI cable.