| 摘要 |
<p>A display system comprises a display apparatus such as an electronic notice board (36), TV set (46) or computer monitor. Radio messages are received by a point-to-point receiving apparatus (16), such as a wide area digital pager, adjustably mounted on the display apparatus. The receiving apparatus (16) generates non-electrical signals which are transmitted to the display apparatus, the display apparatus having means (40, 41, 42) enabling the signals to be displayed. The receiving apparatus (16) is adjusted to minimise the reduction in the quality of the radio signal received by said receiving apparatus.</p> |
