Printing method for point-of-sale (POS) machine trading center based on threshold limit value (TLV) format data

Abstract

The invention relates to a printing method for a point-of-sale (POS) machine trading center based on threshold limit value (TLV) format data. The printing method comprises the following steps of sending out a printing instruction; printing a configured title; sequentially reading printed contents; directly printing the read contents if the read printed contents do not contain tags; if the read printed contents contain tags, analyzing TLV data structures corresponding to the tags to obtain contents of the tags, formatting the contents of the tags according to attributions, replacing the tags in the printed contents with formatted contents of the tags and then performing printing; and printing configured inscriber. By means of the printing method, tag data are obtained from the trading processing result TLV data structures in the aspect of the printed contents, printing can be configured flexibly, and printing formats can be reasonably configured. When the printing variable is updated, a background program does not need updating, so that trade smoothness is ensured, shutdown maintenance of the trading center caused by updating of the background program is avoided, and business losses of an acquirer are reduced to the largest extent.

Description

technical field [0001] The invention relates to the technical field of financial POS transactions, in particular to a printing method based on TLV format data in a POS machine transaction center. Background technique [0002] With the development of the payment industry, more and more acquirers adopt the thin terminal mode as the processing solution of the POS transaction center. In this mode, the terminal obtains the necessary data of the transaction and sends it back to the center, and the center returns the transaction result after completing the transaction processing. Hand over to the terminal to display and print the transaction results. For the data collected by the terminal, the existing thin terminal center platform programs mostly use a fixed data structure for storage. This method can ensure the rapid positioning and use of data during the center processing process, and can support standard UnionPay transactions without modification , for the receipt printing dat...

AI Technical Summary

Problems solved by technology

For the data collected by the terminal, the existing thin terminal center platform programs mostly use a fixed data structure for storage. This method can ensure the rapid positioning and use of data during the center processing process, and can support standard UnionPay transactions without modification , for the receipt printing data, only the specified data can be printed in the specified format, and the format of the printing data such as amount, date, and masked card number cannot be adjusted, and the setting of the printing slip is not flexible, and the printing data cannot be customized flexibly. If you add a new printing option, you can only modify the background code of the trading center. In order to complete the addition of new business, you must modify the background program of the trading center to upgrade. When upgrading the program, the center must stop, which will affect the normal transaction behavior and lead to POS transactions. Center maintenance costs are high and efficiency is low

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