| 摘要 |
<p>The buffer control device of this invention includes: a pointer holding unit (102, 103) which holds a virtual pointer different from a read pointer and a write pointer; an access control unit (106, 111) that controls an access to a ring buffer; a judging unit (104 a/b, 109 a/b) that judges whether or not one of the read pointer and the write pointer has reached an address substantially identical to an address indicated by the virtual pointer; and stop flags Sr and Sw that disable a normal access using the one of the read pointer and the write pointer, when the judging unit judges that the one of the read pointer and the write pointer has reached the address substantially identical to the address indicated by the virtual pointer, the normal access being controlled by the access control unit, wherein the access control unit (106, 111) further controls a reaccess to the ring buffer.</p> |
