US5583538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image display apparatus
Assignee: Canon Inc
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Filing: 1995-05-22
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Granted: 1996-12-10
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Expires: 2015-05-22
Abstract
Abstract An image display apparatus has a display memory for storing a one-frame image, a mouse for pointing a desired point on a CRT display, a keyboard including a key for instructing display area displacement, and an MPU to control display area displacement in response to operation of the key by the operator. The cursor can be displaced to a desired point on the screen to aid efficient panning without frequent shifting of the display area.
Inventors
- 👤 Yasuhiro Watanabe
- 👤 Kensaku Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:28
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/34; G09G5/346
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
129 words
An image display apparatus comprising: memory means for storing image data; display means for displaying part of the image data in said memory means; a pointing device moved along a given plane so as to designate a displacement amount of the display of said part of the image data in said memory means which can be displayed on said display means while the displayed part moves; ratio setting means for manually setting a ratio of displacement amount of said pointing device to the displacement amount of the display of said part of the image data of said memory means; and calculating means for calculating the displacement amount of said memory means in accordance with the ratio set by said ratio setting means and an instruction of said pointing device.
Claim 2
Dependent Claim
129 words
An image display apparatus comprising: memory means for storing image data; display means for displaying part of the image data in said memory means; a pointing device moved along a given plane so as to designate a displacement amount of the display of said part of the image data in said memory means which can be displayed on said display means while the displayed part moves; ratio setting means for manually setting a ratio of displacement amount of said pointing device to the displacement amount of the display of said part of the image data of said memory means; and calculating means for calculating the displacement amount of said memory means in accordance with the ratio set by said ratio setting means and an instruction of said pointing device.
Claim 3
Dependent Claim
15 words
An apparatus according to claim 1, wherein said memory means comprises a random access memory.
Claim 4
Dependent Claim
14 words
An apparatus according to claim 1, wherein said display means comprises a cathode-ray tube.
Claim 5
Dependent Claim
121 words
An image displaying method comprising the steps of: displaying part of image data stored in memory means; moving a cursor along a given plane so as to designate a displacement amount of the display of the part of the image data in the memory means which can be displayed in said displaying step while the displayed part moves, the cursor being moved by a pointing device; manually setting a ratio of displacement of the pointing device to the displacement amount of the display of the part of the image data of the memory means; and calculating the displacement amount of the memory means in accordance with the ratio set in said manually setting step and an instruction of the pointing device.
Claim 6
Dependent Claim
121 words
An image displaying method comprising the steps of: displaying part of image data stored in memory means; moving a cursor along a given plane so as to designate a displacement amount of the display of the part of the image data in the memory means which can be displayed in said displaying step while the displayed part moves, the cursor being moved by a pointing device; manually setting a ratio of displacement of the pointing device to the displacement amount of the display of the part of the image data of the memory means; and calculating the displacement amount of the memory means in accordance with the ratio set in said manually setting step and an instruction of the pointing device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-10 | 2000-06-10 | 2000-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-10 | 2004-06-10 | 2004-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-10 | 2008-06-10 | 2008-12-10 | $7700.00 | Window Closed / Lapsed |