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Power down protection control method and system

A technology of power-down protection and control methods, applied in data processing power supplies, electrical digital data processing, instruments, etc., can solve problems such as incomplete machine data, and achieve the effect of ensuring integrity, strong versatility, and simple realization

Active Publication Date: 2013-06-05
AEROSPACE INFORMATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a control method and system for power failure protection to solve the problem of incomplete machine data caused by sudden power failure of the machine

Method used

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  • Power down protection control method and system

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] The method of the present invention can be used for power-down protection of tax control devices, but is not limited to the field of tax control, and can also be used in other similar systems that require power-down data protection and recovery (such as embedded systems that require field protection and power-on recovery) . The control method is composed of two parts: the power-down protection process and the power-on recovery process. The power-off protection process is to trigger a power-off interruption when the system is powered off. During the short power supply time provided by the backup power supply, the on-site information and data to be protected are stored in non-volatile memory such as Flash, and then the backup is turned off. power supply. The power-on recovery process is to detect the power-off logo and field data in the ...

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Abstract

The invention discloses a method and a system of power down protection control. If the system judges that the main power supply powers off, a power down mark is positioned, and site data is stored through power supplied by a backup power supply. The site data comprises power down data, a current process mark and a power down mark. The system restores the system through the stored site data. The method and the system of the power down protection control solve the problem of incomplete machine data due to sudden power down of the machine.

Description

technical field [0001] The invention relates to the field of data protection and recovery, in particular to a control method and system for power-down protection. Background technique [0002] In the context of the national "Golden Tax Project", tax control devices such as tax control cash registers and network invoicing machines have been promoted across the country in order to realize machine printing and electronic management of invoice issuance. This type of product involves national taxation, and has very strict requirements on the integrity of data in the machine, data in the IC card, and invoice printing data. The national standard for tax-controlled cash registers also clearly stipulates that invoice data and tax-control data need to be protected against power failure, and invoices need to be printed continuously after power failure. The tax control cash register is a complex embedded computer system. The tax control IC card filled with encryption algorithm can real...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/30G06F11/00
Inventor 陈皓侯丙营聂慧萍张磊余彦张福军高阳张晓佳张卉
Owner AEROSPACE INFORMATION
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