System and Method for Preventing Damage to Products
First Claim
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1. An apparatus for preventing damage to products in a display case having a door comprising:
- a normally black transparent liquid crystal display positioned between a front and rear glass of the door; and
a controller electrically connected to the liquid crystal display which drives the liquid crystal display according to transparency data which comprises various transparency levels for the liquid crystal display depending on the time of day.
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Abstract
A device and method for preventing damage to products in a display case is disclosed. The display case includes a normally black transparent liquid crystal display (LCD) which is positioned between a front and rear glass of the door. A controller is electrically connected to the LCD which drives the LCD according to transparency data. The transparency data comprises various transparency levels for the LCD depending on the time of day.
29 Citations
20 Claims
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1. An apparatus for preventing damage to products in a display case having a door comprising:
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a normally black transparent liquid crystal display positioned between a front and rear glass of the door; and a controller electrically connected to the liquid crystal display which drives the liquid crystal display according to transparency data which comprises various transparency levels for the liquid crystal display depending on the time of day. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for preventing damage to products in a display case having a door housing a transparent liquid crystal display (LCD) where the LCD is electrically connected to a controller which is programmed with transparency data comprising the steps of:
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determining the current time; determining if the current time is during a time period specified in the transparency data; and operating the LCD at a predetermined uniform transparency level by way of the controller and according to the transparency data. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for preventing damage to products in a display case having a door which includes a transparent liquid crystal display (LCD) where the LCD is electrically connected to a controller comprising the steps of:
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determining if the door is closed; calculating the elapsed time since the door was closed; and operating each pixel of the LCD at a predetermined transparency level according to the calculated elapsed time. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification