| 摘要 |
<p>An apparatus comprises one or more image catching and sound reading assemblies each adapted to catch images and read sound, convert the images and the sound into image and sound signals, and send the image and sound signals in electromagnetic waves; and a power supply assembly distal from the image catching and sound reading assemblies and including a receiver circuit having an associated antenna for receiving electromagnetic waves containing the image and sound signals from the image catching and sound reading assembly and sending the processed images and sound signals to an AV player for display and broadcasting, and power supply means for supplying power to the AV player. The invention enables a user to monitor a person's (or persons') activities by watching screen of the AV player and listening to broadcasted sound.</p> |
