TRANSMISSION OF HIGH-QUALITY A/V DATA CORRESPONDING TO LOW-QUALITY A/V DATA TRANSMITTED

摘要

While or after a (second) device (200) transmits low-quality audio and/or video data (S320) to another (first) device (100), the second device (200) acquires high-quality audio and/or video data corresponding to the low-quality audio and/or video data according to a control signal (S324) from the first device (100), encodes (S327) the acquired high-quality audio and/or video data, and transmits (S332) the encoded high-quality audio and/or video data via a second channel (16).