Personal communicator having improved contrast control for a liquid crystal, touch sensitive display
First Claim
1. A mobile, compact personal communicator including a data processing system and a communication device for performing a wide variety of data processing and communication functions comprising:
- a casing of a size adapted to be held in the hand of a user;
a touchscreen display mounted on said casing and including a liquid crystal display (LCD) coupled with a touch sensitive overlay;
first and second selectively actuated push buttons mounted on said casing;
a cellular phone mounted on said casing and including a speaker having adjustable volume;
speaker volume control means connected to said first and second buttons and to said speaker for increasing and decreasing said volume of said speaker in response to selective actuation of said first and second buttons respectively;
processing means mounted in said casing, said processing means including screen management means for painting different screens on said display device with contrast control means; and
said contrast control means connected to said LCD for controlling contrast of said LCD, said contrast control means comprising;
selectively actuated first means in a screen for switching said communicator into a contrast control mode of operation and converting the first and second buttons from speaker volume control to contrast control of the display in response to said first means being actuated,second means, operative during said contrast mode of operation, for increasing the contrast of said LCD in response to said first push button being actuated, andthird means, operative during said contrast mode of operation, for decreasing the contrast of said LCD in response to said second push button being actuated.
2 Assignments
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Accused Products
Abstract
A personal communicator has a touch sensitive overlay coupled with a liquid crystal display (LCD). The communicator has two external (non-screen) up/down buttons for adjusting the volume of a cellular phone speaker. These volume buttons are also used to allow the user to adjust contrast. In accordance with one operation, contrast is adjusted in response to the user touching a predetermined area of the screen at the same time as one of the up or down buttons is actuated. In accordance with another operation, contrast is adjusted in response to the user first pressing both speaker volume buttons to enter a contrast adjustment mode, and thereafter pressing one or the other of such buttons, to increase or decrease contrast as desired.
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Citations
15 Claims
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1. A mobile, compact personal communicator including a data processing system and a communication device for performing a wide variety of data processing and communication functions comprising:
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a casing of a size adapted to be held in the hand of a user; a touchscreen display mounted on said casing and including a liquid crystal display (LCD) coupled with a touch sensitive overlay; first and second selectively actuated push buttons mounted on said casing; a cellular phone mounted on said casing and including a speaker having adjustable volume; speaker volume control means connected to said first and second buttons and to said speaker for increasing and decreasing said volume of said speaker in response to selective actuation of said first and second buttons respectively; processing means mounted in said casing, said processing means including screen management means for painting different screens on said display device with contrast control means; and
said contrast control means connected to said LCD for controlling contrast of said LCD, said contrast control means comprising;selectively actuated first means in a screen for switching said communicator into a contrast control mode of operation and converting the first and second buttons from speaker volume control to contrast control of the display in response to said first means being actuated, second means, operative during said contrast mode of operation, for increasing the contrast of said LCD in response to said first push button being actuated, and third means, operative during said contrast mode of operation, for decreasing the contrast of said LCD in response to said second push button being actuated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A personal communicator including a data processing system, a communication device with one or more operating buttons, and a touch controlled liquid crystal display, the method of controlling contrast in the liquid crystal display, comprising the steps of:
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a) generating a screen including a button image in the display using a screen management means included in the data processing system; b) determining if the button image was touched in the display; c) determining if an operating button was depressed, if the button image was touched, and whether the operating button indicated an increase or decrease in the level of contrast for the display; and d) adjusting the contrast level of the display in accordance with the operating button depressed. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification