| 摘要 |
PURPOSE:To facilitate the reading of bar codes, by recording the bar codes in the circumference direction of a disk and therefore recording the character codes with coincidence with those bar codes. CONSTITUTION:The longitudinal direction of character codes 4a and the lengthwise direction of bar codes 4b are formed so as to obtain the coincidence with the radius direction of a video disk 1. Then the contents recorded at a recording part 2 are displayed in a prescribed style. This means that the display contents are equal to each other between the codes 4a and 4b despite their different display styles. These codes 4a and 4b are recorded by irradiating the laser light beams modulated in response to the video signal to a master disk to expose a photoresist to the light. |
