The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2005
Filed:
Jan. 28, 2003
Jiin Lai, Taipei, TW;
Sheng-chung Wu, Hsin Tien, TW;
Jiin Lai, Taipei, TW;
Sheng-Chung Wu, Hsin Tien, TW;
Via Technologies, Inc., Taipei Hsien, TW;
Abstract
A read/write scheduling apparatus of controller chip and method for the same. The read/write scheduling apparatus is used for arbitrating a plurality of read and write requests from a CPU to access a memory unit. The read request has higher priority in a host bandwidth limited case and the write requests in write queues are not sent until a predetermined amount of write requests are accumulated. In a DRAM bandwidth limited case, the read and the write requests have the same priority. The scheduling apparatus counts the number of the read and write requests to the memory unit within a predetermined time, the operation is changed to DRAM bandwidth limited case in case that the counted number is larger than a predetermined number.