Hand-Scan Magnetic Stripe Reader/Encoder Having a Wave-Like Rail
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09
A wave-like rail instead of a conventional flat rail for guiding a passbook is provided in a hand-scan magnetic stripe reader/encoder (MSR/E) in order to prevent any writting error caused by an operator's inadvertent skewed scan of the passbook. A shown in Fig. 1, a passbook is manually scanned in a slot on a guide rail 1 in a MSR/E. Magnetic stripe data in a two-track non-return-to-zero inverted (NRZI) coding is written on a magnetic surface on the passbook by a writing head 2, and simultaneously read by a reading head 3 for cyclic redundancy check or some other purpose. In the conventional MSR/E, the written data is evenly skewed, as shown in Fig. 2, when the card is skewed and scanned along the rail. Such a skew error cannot be detected by the read head 3 near the write head 2.