Bar code display apparatus
AssigneeMotorola, Inc.
InventorsCary D. Perttunen, George N. Maracas, William L. Reber
Life of this patent
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Abstract
A bar code display apparatus includes a time-varying nonpredictable code generator (12) and a display device (14) responsive to the time-varying nonpredictable code generator (12) to display a time-varying nonpredictable bar code. The display device can provide a scrolling display by displaying a subsequent bar code portion having a bar removed from an end of the bar code. Alternatively, the display device can display a pulsed signal corresponding to the bar code. A housing, having an inset portion at which the display device is accessible, can support the time-varying nonpredictable code generator and the display device.
Claims6
An apparatus comprising:
- a time-varying nonpredictable code generator;
- a scrolling display device responsive to the time-varying nonpredictable code generator to display a time-varying nonpredictable bar code wherein the bar code scrolling display displays a first bar code at a first time and a second bar code at a second time, the second bar code having a bar removed from an end of the first bar code;
- a housing to support the time-varying nonpredictable code generator, the housing having an inset portion at which the display device is accessible.
Dependencies are inferred from the claim text.