Patent ID: 11936927
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A multimedia signal transmission control system, comprising:
a transmitter control circuit, configured to pack, in an active video period of a video frame, a control signal and a video signal into a plurality of first hybrid data packets, and configured to pack, in a vertical front porch and a vertical back porch of the video frame, the control signal and an audio signal into a plurality of second hybrid data packets, wherein the active video period is between and adjacent to the vertical front porch and the vertical back porch; and
a receiver control circuit, coupled to the transmitter control circuit, configured to receive the plurality of first hybrid data packets in the active video period, and configured to receive the plurality of second hybrid data packets in the vertical front porch and the vertical back porch, wherein the receiver control circuit is configured to unpack the plurality of first hybrid data packets and the plurality of second hybrid data packets to provide the control signal, the video signal and the audio signal to a display module,
wherein the transmitter control circuit comprises:
a signal distribution circuit, comprising a first output terminal and a second output terminal, configured to receive the control signal, wherein the signal distribution circuit distributes the control signal to the first output terminal to output the control signal by the first output terminal in the active video period, and distributes the control signal to the second output terminal to output the control signal by the second output terminal in the vertical front porch and the vertical back porch; and
a transmitter interface circuit, coupled to the first output terminal, the second output terminal and the receiver control circuit, wherein the transmitter interface circuit is configured to generate the plurality of first hybrid data packets according to a signal received from the first output terminal and the video signal, and also configured to generate the plurality of second hybrid data packets according to a signal received from the second output terminal and the audio signal.