| 摘要 |
PURPOSE:To attain to reduce the number of access times and access time of a disc, by mounting a code converting circuit, a font group start address converting circuit, an adder, a comparing part, a sort part and a delivery processing part. CONSTITUTION:A character code (a) and a character size selection signal (b) are converted to a sector number 501 and a sector character number 502 by a code converting circuit 5 and a font group start address selection circuit 6 converts a character size selection signal (b), a type face selection signal (c) and a type kind selection signal (d) to start sector addresses at every size, type face and character kind. An adder 7 adds the sector number 501 and a start sector address 601 to calculate a sector address and a comparing part 9 compares the sector address part of a working buffer 8 and the inferior sector address part of an inferior sector table 10 to investigate whether both parts coincide with each other. A sort part 11 sorts the working buffer 8 as a key in rising order. A delivery processing part 12 determines a sector address reading on the basis of the buffer 8 and the number of sectors to send the same to an external memory apparatus control part 13. |
