Machine-readable displays
First Claim
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1. A reflective electro-optic display having a bar code display area arranged to display a bar code readable by a bar code scanner, the display comprising an electrophoretic electro-optic medium, the electrophoretic medium comprising a plurality of electrically charged particles suspended in a suspending fluid and capable of moving through the suspending fluid on application of an electrical field thereto, the electrically charged particles and the suspending fluid being confined within a plurality of capsules or microcells.
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Abstract
A reflective electro-optic display (200) has a bar code display area (206) arranged to display a bar code readable by a bar code scanner.
432 Citations
20 Claims
- 1. A reflective electro-optic display having a bar code display area arranged to display a bar code readable by a bar code scanner, the display comprising an electrophoretic electro-optic medium, the electrophoretic medium comprising a plurality of electrically charged particles suspended in a suspending fluid and capable of moving through the suspending fluid on application of an electrical field thereto, the electrically charged particles and the suspending fluid being confined within a plurality of capsules or microcells.
- 17. A reflective electro-optic display having a bar code display area arranged to display a bar code readable by a bar code scanner, the bar code display area being arranged to display a one-dimensional bar code and being provided with a plurality of parallel elongate electrodes and drive means for applying to the elongate electrodes differing voltages, thereby causing the electro-optic display to display the bar code.
- 19. A reflective electro-optic display having a bar code display area arranged to display a bar code readable by a bar code scanner, the display having a writing means movable linearly relative to the bar code display area, the writing means having a plurality of electrodes capable of writing on the bar code display area, the writing means further comprising means for varying the voltage applied to the electrodes as the writing means is moved relative to the bar code display area, so that the writing means writes a two-dimensional bar code on the bar code display area.
Specification