Communication interface circuit, data communication method and system
A communication interface circuit and data communication technology, which is applied in the field of communication interface circuit, data communication method and system, can solve the problems of damaging the developing structure and fixing structure of the printer, being easily invaded and damaged by malicious intentions, and reducing the printing quality, etc. Risk of poor contact, resistance to intrusion and tampering, reduced effect of contact terminals
Active Publication Date: 2022-03-18
北京辰光融信技术有限公司
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Problems solved by technology
[0002] There are major shortcomings in the communication mode of printer consumable chips in the existing industry. The main reason is that the start signal and end signal rules of data reading and writing are relatively simple, and they are easy to be invaded and damaged by malicious intent.
If it is maliciously destroyed, any illegal consumables can be recognized by the printer, which will not only cause a decline in printing quality, but may seriously damage the developing structure and fixing structure of the printer, resulting in damage to the printer
In addition, the storage unit of the consumable chip and the storage unit of the printer are in continuous communication, and the storage unit of the printer will temporarily store information such as printing content; if the communication of the consumable chip is maliciously intruded, it will threaten the information security of the entire printer
Method used
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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include plural forms unless t...
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The invention discloses a communication interface circuit, a data communication method and a system, comprising: a host interface part and a slave interface part, and the host interface part includes a host serial clock output terminal, a host serial data bus input and output terminal, and a host ground terminal ; The slave interface part includes a slave power input terminal, a slave serial clock input terminal, a slave serial data bus input and output terminal and a slave ground terminal; the master serial clock output terminal is connected to the anode of the diode, and the cathode of the diode Connect to the slave power input terminal and the first terminal of the capacitor, the second terminal of the capacitor is grounded; the master serial clock output terminal is connected to the slave serial clock input terminal; the master serial data bus input and output terminal is connected to the slave machine Serial data bus input and output terminals; the ground terminal of the master and the ground terminal of the slave are commonly grounded. The invention can realize safe communication between the master and the slave.
Description
technical field [0001] The invention relates to the technical field of data communication, in particular to a communication interface circuit, a data communication method and a system. Background technique [0002] The communication mode of printer consumable chips in the existing industry has major shortcomings, mainly because the rules of the start signal and end signal of data reading and writing are relatively simple, and they are easy to be invaded and damaged by malicious intent. If it is maliciously damaged, any illegal consumables can be identified by the printer, which will not only cause a decline in printing quality, but may seriously damage the developing structure and fixing structure of the printer, resulting in damage to the printer. In addition, the storage unit of the consumable chip and the storage unit of the printer are in continuous communication, and the storage unit of the printer will temporarily store information such as printed content; if the commu...
Claims
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IPC IPC(8): G06F21/60G06F21/85G06F13/42G03G15/00
CPCG06F21/608G06F21/85G06F13/4291G06F13/4295G03G15/5016
Inventor 颜志鑫刘德强杨香玉李远
Owner 北京辰光融信技术有限公司