VIDEO TRANSMITTER APPARATUS AND VIDEO RECEIVER APPARATUS

• Main Authors: KABUTO NOBUAKI, OKI YUYA
• Format: Patent
• Language: English
• Published: 20.01.2011
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To solve such a problem that, it is necessary for a video transmitter apparatus, which transmits video and audio signals to a video receiver apparatus, to obtain in real time receiver apparatus information such as an EDID (Extended Display Identification Data) showing a reception capability of the video receiver apparatus and to obtain an optimal video and audio signal format or the like to be transmitted but for wireless transmission or the like wherein communication capacity is not sufficient, it is difficult to obtain within a short time receiver apparatus information of a plurality of video receiver apparatuses.SOLUTION: The video transmitter apparatus sends a history number of receiver apparatus information already obtained the last time to a video signal receiver apparatus together with a receiver apparatus information request signal and confirms presence/absence of any receiver apparatus information alteration. Only when receiver apparatus information is altered, the receiver apparatus information is sent to the video transmitter apparatus, thereby minimizing influences, caused by long-time occupancy of communication, on transmission of video signals.