| 摘要 |
<p>PURPOSE:To attain frame identification without overloading a CPU by storing a transmission signal received at a high speed once into a memory, applying polling at a slow period and discriminating the presence of a head of plural data at once. CONSTITUTION:A periodic data string having a specific head data pattern at a head data of one frame is received by serial transmission and stored in a reception data buffer area 13a of a RAM 13. Polling processing is executed for a CPU 14 by a reception task execution section 14a. When a data of one frame is identified, a reception task 15a in a ROM 15 informs position information in the reception data buffer area 13a to a data processing task 15b. Thus, a data processing task execution section 14b of the CPU 14 applies data processing according to a predetermined procedure such as edit and output to the data of one frame.</p> |
