| 摘要 |
<p>PURPOSE:To read magnetic information accurately by forming a clock information channels of magnetic material dots between two nonmagnetic material substrates, and then providing information channels of magnetic material dots in parallel to said channel. CONSTITUTION:In the ''Ramey'' card having numbers of information dots 3 of magnetic materials between substrates 1 and 2 made of nonmagnetic materials, 3ch among information dot arrays is a clock channel and other channels are used for information; an information dot is provided for each line section. Then, 1ch, 2ch, 4ch, and 5ch correspond to bits 2<1>, 2<2>, 2<3>, and 2<4> of a binary code. A line section 1 is provided with information dots for all channels, which shows ''Ramey'' insertion signal. A line section 2 is provided with information dots for 2ch-5ch, which generates a discrimination signal for the top/reverse discrimination of ''Ramey'' card. Line sections 3-14 indicate characters and numbers, and the final line section shows the completion of a read.</p> |
