| 摘要 |
PURPOSE:To make it possible to decide the code of transmission signals without increment of the capacity of a ROM by making x and y coordinates of receiving information into absolute values and comparing them with the comparison table of the ROM and deciding the code after decision of the position on the first quadrant. CONSTITUTION:After stored in 5-bit address registers 1 and 2 for x and y coordinates, x coordinate information and y coordinate information of receiving information are made into absolute values by absolute value circuits 3 and 4. Then, they are outputted from circuits 3 and 4 as 4-bit address information and are compared with the comparison table of 4-bit information stored in ROM5, and the position on the first quadrant is decided, and the code is decided in 6. As a result, the code of transmission signals can be decided effectively without increment of the capacity of ROM5. |
