Systems and methods for synchronization mechanisms for magnetic cards and devices
First Claim
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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.
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Abstract
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.
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Citations
20 Claims
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1. A method, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification