Patent ID: 8820640
Filing Date: 2014-09-02
Classification: G06K,G11B

Abstract:
1. A magnetic card reader, for reading magnetic data comprising bitwise serial data recorded in a card-like medium by using a magnetic head, comprising: a storage section for storing the magnetic data read and acquired from the card-like medium by using the magnetic head; a stored data counter configured to count a number of data stored in the storage section based on an interrupt signal generated at each time of reading the serial data of each bit of the magnetic data; a total detection number counter configured to count a total number of data in the magnetic data read based on the interrupt signal; a first comparing section for comparing the total number of data in the magnetic data with a prescribed first threshold; and a first judgment section for judging that the magnetic data is effective data based on the total number of data in the magnetic data being less than or equal to the prescribed first threshold in the first comparing section; wherein the total number of data is the number of read data when the magnetic reading operation is finished reading the card-like medium; wherein the prescribed first threshold is a value calculated by adding a prescribed first number of data to the number of data in the magnetic data recorded in the magnetic card specified according to ISO standards; and wherein, in a case that the number of read data when the magnetic reading operation is finished is less than or equal to the value calculated by adding the prescribed first number of data to the number of data in the magnetic data recorded in the magnetic card specified according to ISO standards, the magnetic data is judged as the effective data by the first judgment section.