| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technology by which a receiver can more excellently reproduce video/audio transmitted from a transmitter even in an environment where the receiver hardly receives radio waves. <P>SOLUTION: This system (100A) comprises a transmitter (101A) including a first antenna (102) and a second antenna (100B) connected to the transmitter. The transmitter includes: a receiving circuit (103) which detects a receiving strength; an AV transmission circuit (110) which converts a video/audio signal into a television broadcast radio wave corresponding to a transmission channel and outputs it; a control circuit (106) which allocates a channel of a minimum receiving strength to the transmission channel; and a group of switches (107, 108, 111) for connecting antennas and circuits in accordance with a determination of the control circuit. The control circuit determines that output of the AV transmission circuit is to be transmitted from one antenna when a maximum receiving strength is below a threshold, and determines that the output of the AV transmission circuit is to be transmitted from another antenna when the maximum receiving strength exceeds the threshold. <P>COPYRIGHT: (C)2009,JPO&INPIT |
