Browse Prior Art Database

Hand Held Encoder

IP.com Disclosure Number: IPCOM000083448D
Original Publication Date: 1975-May-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Coker, CW: AUTHOR [+2]

Abstract

The apparatus comprises an induction head 1 for writing on the magnetic stripe of an article, not shown. Wheel 2 frictionally engages the surface of the article and is rotatably driven thereby, to measure the velocity of the induction head 1 along the magnetic stripe. Magnetic encoded clock wheel 3 is driven by wheel 2, and magnetoresistive head 4 is responsive to magnetic clock bits encoded on wheel 3 for clocking write data to the induction head 1.

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Hand Held Encoder

The apparatus comprises an induction head 1 for writing on the magnetic stripe of an article, not shown. Wheel 2 frictionally engages the surface of the article and is rotatably driven thereby, to measure the velocity of the induction head 1 along the magnetic stripe. Magnetic encoded clock wheel 3 is driven by wheel 2, and magnetoresistive head 4 is responsive to magnetic clock bits encoded on wheel 3 for clocking write data to the induction head 1.

Heads 1 and 4 and wheels 2 and 3 are mounted in spring loaded and gimbaled mount 5 carried within handle 6. By this spring load and gimbal arrangement, adequate head-to-tape contact is provided. It is intended that handle 6 be hand driven across the magnetic stripe to be encoded. If because of this hand guidance, skew becomes a problem, an auxiliary device could be provided for assisting the hand in guiding the encoder.

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