Systems and methods for synchronization mechanisms for magnetic cards and devices

摘要

A processor of a card may detect variations (e.g., position, velocity, acceleration and direction) of a read head in relation to the card. Based on certain parameters (e.g., card length, initially detected read head position, and read head velocity) a processor of a card may adjust synchronization bit patterns that may synchronize communications between the card and a read head of a magnetic stripe reader. A processor of a card may generate a number of leading synchronization bits that is different than a number of trailing synchronization bits.

主权项

1. A method, comprising:
detecting position variations of a read head in relation to a card; calculating a time window to communicate data to said read head based on said position variations; selecting a number of leading synchronization bits to precede said data; and selecting a number of trailing synchronization bits to succeed said data, wherein said selected number of leading synchronization bits is different than said selected number of trailing synchronization bits.