Browse Prior Art Database

Hand-Scan Magnetic Stripe Reader/Encoder Having a Wave-Like Rail

IP.com Disclosure Number: IPCOM000062623D
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Inoue, Y: AUTHOR

Abstract

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.

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Hand-Scan Magnetic Stripe Reader/Encoder Having a Wave-Like Rail

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. It can only be detected when the passbook is scanned again without skew.

(Image Omitted)

However, in this new MSR/E, the written data is disordered, as shown in Fig. 3, when the passbook is skewed during its scan. The skew error can be detected only in a single scan, because either one of the leading edge or the trailing edge of the passbook moves up and down during its scan, corresponding to the wave shape or uneven shape of the rail, as shown in a dotted line 1'. Moreover, the operator can feel the up and down movement of the passbook and notice his skewed scanning of the passbook. When the passbook is not skewed, it is ...