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Data storage system for tax controlled cash register

A technology for a data storage system and a tax-controlled cash register, which is applied in the field of tax-controlled cash registers, can solve the problems that SRAM is easily interfered, the number of times of EEPROM and FLASH erasing is limited, etc., so as to simplify power management, reduce costs, and increase The effect of operating life

Inactive Publication Date: 2006-07-19
CHENGDU QIANFENG ELECTRONICS APPLIANCES GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if the system wants to completely solve the problem of battery life, SRAM is susceptible to interference and the problem of limited erasing and writing times of EEPROM and FLASH

Method used

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  • Data storage system for tax controlled cash register
  • Data storage system for tax controlled cash register
  • Data storage system for tax controlled cash register

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Experimental program
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Embodiment Construction

[0017] Below in conjunction with embodiment the present invention is described further

[0018] Tax control cash register data storage system of the present invention such as image 3 It can be seen that: a tax control cash register data storage system, the data storage system is mainly composed of Flash memory, EEPROM memory, FRAM ferroelectric memory, time / other control units, wherein

[0019] Flash memory is used to store a large amount of data. During the storage process, the erasing and writing operations are evenly distributed on each erasing block of the Flash memory in turn, that is, when the data in the EEPROM accumulates enough for a block of the Flash memory for the first time When the amount of data is large, it is written in Partition 1 of the Flash memory, then it is written in Partition 2 of the Flash memory next time, and it is written in sequence until all partitions are written, and then it is written in Partition 1 of the Flash memory, and so on. Evenly dis...

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PUM

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Abstract

The invention discloses a tax control cashier's machine data storing system which comprises: a Flash storage used to store a plurality of data, wherein the rub-write operation is distributed on each rub-write block of the Flash storage during the storing course; a EEPROM storage used to store the buffer data, when the data in EEPROM storage accumulates to a block data amount of the Flash storage, it concentrates to write it to another rub-write block of the Flash storage; a FRAM iron electric storage used to store the data which is normal used or the preserved data without power; wherein the Flash storage, the EEPROM storage and the FRAM iron electric storage are separately change the data information with the MCU center processor.

Description

technical field [0001] The invention relates to a tax-controlled cash register, in particular to a tax-controlled cash register data storage system. Background technique [0002] The tax-controlled cash register is a legally serious and indestructible cash register with a tax calculation function. It has dual functions. Law enforcement representatives collecting sales data in-store. It is equipped with a Fiscal Memory that automatically records but cannot be changed or erased. It records daily business data, and faithfully implements the supervision of government departments just like the "black box" on a civil aviation aircraft. Check responsibilities. It is fixed inside the machine with a special lead seal, and no one can open it except tax and full-time registered maintenance personnel. The tax-controlled cash register is an important tool for the state to collect taxes. The safety performance of the tax-controlled cash register directly affects the national tax revenu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07G1/12G07G1/00
Inventor 刘楷江海波
Owner CHENGDU QIANFENG ELECTRONICS APPLIANCES GROUP
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