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. 09, 2003
Filed:
Mar. 29, 2000
Bar-Chung Hwang, Taoyuan, TW;
Winbond Electronics Corp., Hsinchu, TW;
Abstract
A microcomputer system and method of utilizing a repeated reset operation to enter the microcomputer system into different operating modes, particularly a microcomputer system without a keyboard, in which only a reset key is needed to set the required operating mode. The microcomputer system of the present invention comprises: a microcomputer; a memory connected to the microcomputer; a reset key to reset the microcomputer system; and a reset circuit to provide a power on reset pulse required in the microcomputer system or to receive the reset pulse produced by reset key. The microcomputer system checks both a specific memory area content for only a first specific value and a dedicated address content in the memory for a second specific value. If both only the first specific value in specific memory area and the second specific value in dedicated address are present, the microcomputer system is set to an abnormal operating mode. Otherwise, the specific value is written into the dedicated address in the memory. If the system is not reset within a predetermined waiting time, the microcomputer is entered into a normal operating mode.