| 摘要 |
<p>PURPOSE:To reduce the luminance of a picture when an individual display terminal equipment is not used by setting the power source of plural display terminal equipment and a control part common in use. CONSTITUTION:When the power source switch SW1 of a seal print retriever 1A is turned ON, a power source is applied on the power source part 30a of a controller 3a, and the power source status of the retriever 1A is latched at a status outgoing part 31. When the ON signal of the switch SW1 is sent from the outgoing part 31, an output control part 35a sends a video signal of ordinary level from a video memory 34a to the retriever 1A. At the time, the output control part 35a sends the video signal of low level from the video memory 34a to a retriever 1B when the power source switch SW2 of the retriever 1B is turned OFF, therefore, the luminance of the picture can be reduced. In such a way, a common power source is applied on the power source part 30a of the controller 3a by turning ON either the power source switch SW1 or SW2 of plural retrievers 1A and 1B, and the luminance of the picture of the retriever set at an OFF state can be reduced.</p> |
