Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CHIP VERSION SWITCHING METHOD, APPARATUS AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/086306
Kind Code:
A1
Abstract:
A chip version switching method, apparatus and system. The switching method comprises: a first determining step (A01): after a flag bit of version information is accessed, determining whether the flag bit is vacant; an information changing step (A02): if the determining result in the first determining step indicates that the flag bit is not vacant, changing version information in chip data according to the flag bit; a flag rewriting step (A03): modifying a flag in the flag bit into a version setting flag or writing the version setting flag into the flag bit after a first part of address bit of the chip data is accessed; a second determining step (A04): determining whether a second part of address bit of the chip data is accessed; and a flag erasing step (A05): if the determining result in the second determining step indicates that the second part of address bit of the chip data is accessed, erasing the version setting flag in the flag bit. According to the chip version switching method, apparatus and system, version information of a chip can match version information of an imaging device by means of accessing an address bit in chip data, so that the chip is suitable for different versions of imaging devices, and firmware upgrade resistance is high.

Inventors:
YANG, Yanan (Rm 301, G1 Bldg. No.31 Kefeng Rd., Guangzhou Economic Development Zone, Huangpu Dist, Guangzhou Guangdong 3, 510663, CN)
WANG, Bo (Rm 301, G1 Bldg. No.31 Kefeng Rd., Guangzhou Economic Development Zone, Huangpu Dist, Guangzhou Guangdong 3, 510663, CN)
MAO, Hongcheng (Rm 301, G1 Bldg. No.31 Kefeng Rd., Guangzhou Economic Development Zone, Huangpu Dist, Guangzhou Guangdong 3, 510663, CN)
DUAN, Weihu (Rm A314, G1 Bldg. No.31 Kefeng Rd., Luogang Dist, Guangzhou Guangdong 3, 510663, CN)
Application Number:
CN2017/080021
Publication Date:
May 17, 2018
Filing Date:
April 11, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
GUANGZHOU XIAOWEI ELECTRONIC TECHNOLOGY CO., LTD (Rm 301, G1 Bldg. No.31 Kefeng Rd.,Guangzhou Economic Development Zone, Huangpu Dist, Guangzhou Guangdong 3, 510663, CN)
International Classes:
B41J2/175
Domestic Patent References:
WO2011066777A12011-06-09
Foreign References:
CN103640339A2014-03-19
CN104943397A2015-09-30
CN205229679U2016-05-11
CN103660583A2014-03-26
CN105809077A2016-07-27
Download PDF: