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US 5,636,041 AGranted
Technique for increasing the visibility of an LCD panel during warm-up thereof
AssigneeDell USA, L.P.
InventorsJohn J. Pearce, Philip Chidester
Life of this patent
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AssigneeDell USA, L.P.
InventorsJohn J. Pearce, Philip Chidester
Estimating the term…
Method and apparatus for automatically increasing the visibility of an LCD during warm-up thereof is disclosed. In a preferred embodiment, the system of the present invention comprises brightness control circuitry electrically connected to an LCD panel of a portable personal computer (PC) or other battery operated electronic device for controlling the brightness level of the LCD. The brightness control circuitry is also electrically connected to receive a signal indicative of a brightness control level selected by a user using a user-settable control means, such as a brightness control knob located on the device. In operation, on power up of the LCD, the brightness control circuitry increases the LCD brightness to a maximum level, regardless of the brightness level selected by the user. Once the LCD has warmed up, the brightness control circuitry decreases the brightness level of the LCD to the level selected by the user. In one aspect of the invention, the brightness level is decreased incrementally such that its occurrence is virtually undetectable by the user.
In an electronic device having a liquid crystal display (LCD), a method of increasing the visibility of said LCD during a warm-up period thereof, the method comprising, responsive to said LCD being powered on:
In an electronic device having a liquid crystal display (LCD), a method of increasing the visibility of said LCD during a warm-up period thereof, the method comprising, responsive to said LCD being powered on:
Apparatus for increasing the visibility of a liquid crystal display (LCD) of an electronic device during a warm-up period of said LCD, the apparatus comprising:
Apparatus for increasing the visibility of a liquid crystal display (LCD) of an electronic device during a warm-up period of said LCD, the apparatus comprising:
Dependencies are inferred from the claim text.