| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ring buffer circuit for correctly detecting whether data are full or empty regardless of whether reading and writing are synchronized or not synchronized and the control circuit of the ring buffer circuit. <P>SOLUTION: The ring buffer circuit includes: a read/write memory having an address designated by N bits; a write address counter pointer and a read address counter pointer of a read/write memory which counts the gray codes of N+1 bits; and a write/read address conversion circuit for converting the gray codes of N+1 bits to be output by the write/read address counter pointers into the address of N bits to be directly designated as the write/read address of the read/write memory. <P>COPYRIGHT: (C)2010,JPO&INPIT |
