VIDEO TRANSCEIVER SYSTEM, VIDEO TRANSMISSION METHOD, AND TRANSMISSION DEVICE

摘要

A video transmitting and receiving system includes a transmitting device that transmits a packet, and a receiving device that receives the packet transmitted from the transmitting device. The transmitting device inserts null data into an unused space after a video signal has been encoded and generates a packet having a predetermined packet length. Then, the null data is replaced with known data to modulate and the packet is transmitted. The receiving device receives the transmitted packet to demodulate and waveform distortion of the packet is detected based on the known data pre-registered to correct so as to perform waveform equalization.

主权项

1. A video transmitting and receiving system comprising:
a transmitting device that transmits a packet; and a receiving device that receives the packet transmitted from the transmitting device, wherein the transmitting device comprises:
a null data detector that detects null data inserted into the packet of a video encoded signal without reducing video data;a known data replacer that replaces the null data detected by the null data detector with known data;a packet modulation unit that modulates the packet in which the null data is replaced with the known data; anda packet transmitter that transmits the packet modulated by the packet modulation unit, and the receiving device comprises:
a demodulation unit that demodulates a packet, transmitted from the packet transmitter and received, and performs an inverse correction based on a waveform distortion;a known data detector that detects the known data included in the packet demodulated by the demodulation unit based on pre-registered known data; and a waveform equalizer that extracts the waveform distortion from a difference between the known data detected by the known data detector and the pre-registered known data, and supplies the waveform distortion to the demodulation unit.