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:
Jan. 20, 2009
Filed:
Apr. 21, 2005
Chi-chun Hsu, Taipei Hsien, TW;
Wen-yi Wu, Hsin-Chu Hsien, TW;
Chi-Chun Hsu, Taipei Hsien, TW;
Wen-Yi Wu, Hsin-Chu Hsien, TW;
Mediatek Incorporation, Hsin-Chu Hsien, TW;
Abstract
An optical disc drive includes a firmware memory, a buffer memory, and a system control chip. The system control chip includes a processor and a memory update controller. When the optical disc drive is under a normal mode, the memory update controller is in an idle state. The processor controls the optical disc drive to fetch an update firmware from an optical disc and store the update firmware into the buffer memory. When the optical disc drive is under a firmware update mode, the processor is in an idle state. The memory update controller fetches the update firmware from the buffer memory and stores the update firmware into the firmware memory without the processor executing an update routine code.