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1. (WO1991006937) VISUAL DISPLAY APPARATUS
注意: このテキストは、OCR 処理によってテキスト化されたものです。法的な用途には PDF 版をご利用ください。

CLAIMS

1. Visual display apparatus comprising a visual display means, and a controller for controlling the visual display means to display an image using at least two visually differentiable display modes,
characterised in that when a first and second image are displayed together on the visual display means, the second image comprising substantially annotations of the first image, the controller provides for each image to be in a different mode.

2. Visual display apparatus as claimed in Claim 1 wherein the first display mode is monochrome mode and the second display mode is a dither pattern mode.

3. Visual display apparatus as claimed in Claim 1 wherein the first display mode is a first grey and the second display mode is a different grey.

4. Visual display apparatus as claimed in Claim 3 wherein either grey approximates to black.

5. Visual display apparatus as claimed in Claim 1 wherein a first display mode is a first colour and the second display mode is a different colour.

6. Visual display apparatus as claimed in any preceding Claim further comprising a data input means overlaying, underlying or integral with the visual display means and cooperating with a manually movable stylus member whereby the stylus is operable to allow graphical data input by a user.

7. Visual display apparatus as claimed in Claim 6 wherein the said second image is generated by the controller in dependence upon the graphical data input

8. Computing apparatus comprising a visual display apparatus as claimed in any preceding Claim.

SUBSTITUTE SHEET