WRITING TABLET INFORMATION RECORDING DEVICE
First Claim
Patent Images
1. A writing/drawing tablet device with data capture comprising:
- a drawing surface integrated in the tablet and adapted to display back to the user a result of an image drawn or written upon said drawing surface by the user, anda data capture device for capturing said image drawn or written upon said drawing surface for storing in a memory device, whereinsaid display back to the user of the image drawn or written upon said drawing surface does not require the consumption of electrical power from any power source.
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Accused Products
Abstract
A writing/drawing tablet utilizing a data capture device such as a pressure sensitive display that can capture data from the resulting image drawn on the device. In general, Bistable Liquid Crystal Displays (BLCD), and in particular, Cholesteric Liquid Crystal Displays (ChLCDs), can be utilized in such a device to create low cost pressure sensitive displays that are efficient power consumers and that can be utilized in a number of unique devices.
132 Citations
33 Claims
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1. A writing/drawing tablet device with data capture comprising:
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a drawing surface integrated in the tablet and adapted to display back to the user a result of an image drawn or written upon said drawing surface by the user, and a data capture device for capturing said image drawn or written upon said drawing surface for storing in a memory device, wherein said display back to the user of the image drawn or written upon said drawing surface does not require the consumption of electrical power from any power source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A writing/drawing tablet device with data capture comprising:
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a power supply for powering said device; a memory storage device; a pressure sensitive drawing surface integrated in said tablet device and adapted to display back to the user a result of an image drawn or written upon said drawing surface by application of pressure by the user, said display back to the user provided without said pressure sensitive drawing surface consuming electrical energy; a switch for erasing said image from said drawing surface by providing electrical energy to said drawing surface when said switch is actuated by a user; a data capture device for electronically capturing said image drawn or written upon said drawing surface into data for storing in a memory device; and a data interface for connecting said tablet device to an external device for communicating with said tablet device for receiving said data. - View Dependent Claims (24)
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25. A writing/drawing tablet device with data capture comprising:
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a pressure sensitive drawing surface including a first substrate having at least one liquid crystal layer and adapted to display back to the user a result of an image drawn or written upon said drawing surface by application of pressure by the user to said drawing surface to locally displace said liquid crystal to change its reflectance in a persistent manner; a pressure sensitive data capture surface including a second substrate for converting said image drawn or written upon said drawing surface into data; and a memory device for storing said data, wherein said data is used for reproducing said image drawn or written upon said drawing surface. - View Dependent Claims (26, 27, 28)
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29. A writing/drawing tablet device with data capture comprising:
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a power supply for powering said device; a memory storage device; a pressure sensitive drawing surface including a first substrate having at least one liquid crystal layer and adapted to display back to the user a result of an image drawn or written upon said drawing surface by application of pressure by the user to said drawing surface to locally displace said liquid crystal to change its reflectance in a persistent manner without any substantial consumption of electrical power; a switch for erasing said image from said drawing surface by providing electrical energy to said drawing surface when said switch is actuated by a user; a data capture device for electronically capturing said image drawn or written upon said drawing surface into data for storing in a memory device; and a data interface for connecting said tablet device to an external device for communicating with said tablet device for receiving said data.
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30. A method of generating and reproducing an image on a display device, said method comprising the steps of:
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changing a reflectance of a portion of a chemical layer integrated in a drawing surface of said display device in response to a pressure being applied to the portion of the chemical layer for presenting an image on said drawing surface; converting said image on said drawing surface to data by also utilizing said applied pressure; storing said data in a memory device connected to said display device; and reproducing said image on a display different than said drawing surface. - View Dependent Claims (31, 32, 33)
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Specification