Title:
INK CARTRIDGE CHIP AND INK CARTRIDGE USING CHIP
Document Type and Number:
WIPO Patent Application WO/2015/106616
Kind Code:
A1
Abstract:
An ink cartridge chip (10) comprises a communications interface unit (11), a data conversion unit (13), and a storage unit (12). The communications interface unit (11) is used for communicating with an imaging apparatus in which the ink cartridge is mounted, so as to receive or send ink amount information in a first format. The data conversion unit (13) is used for converting the received ink amount information in the first format into ink amount information in a second format, a bit quantity comprised in the second format being greater than a bit quantity comprised in the first format. The storage unit (12) is used for storing the ink amount information in the second format. When the imaging apparatus needs to read the ink amount information in the ink cartridge chip (10), the data conversion unit (13) is further used for restoring the ink amount information in the second format stored in the storage unit (12) into the ink amount information in the first format. Because the bit quantity of the ink amount information stored in the storage unit (12) is greater than the bit quantity of information received from the imaging apparatus, another authorized apparatus cannot correctly obtain actual ink amount information when the authorized apparatus reads the storage unit (12), thereby effectively protecting the security of data of the ink cartridge chip (10).
Inventors:
ZHANG LINLIN (CN)
HONG LIANG (CN)
HONG LIANG (CN)
Application Number:
PCT/CN2014/094139
Publication Date:
July 23, 2015
Filing Date:
December 17, 2014
Export Citation:
Assignee:
APEX MICROELECTRONICS CO LTD (CN)
International Classes:
H04L9/28; B41J2/175
Foreign References:
CN103862879A | 2014-06-18 | |||
CN203324652U | 2013-12-04 | |||
CN101782739A | 2010-07-21 | |||
CN102377894A | 2012-03-14 | |||
CN1868749A | 2006-11-29 | |||
US20100053237A1 | 2010-03-04 |
Other References:
See also references of EP 3090876A4
None
None
Attorney, Agent or Firm:
YUHONG INTELLECTUAL PROPERTY LAW FIRM (CN)
北京聿宏知识产权代理有限公司 (CN)
北京聿宏知识产权代理有限公司 (CN)
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