Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Reexamination Certificate
1998-09-02
2001-04-10
Shankar, Vijay (Department: 2673)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
C345S184000, C178S019010, C178S018010
Reexamination Certificate
active
06215480
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to computer displays and, more particularly, to a naturally scrolling cylindrical display which gives the user the appearance of a much larger display in a very small size.
2. Background Description
Computing devices such as, for example, digital cell-phones, pagers, pocket computers, and the like, are being made smaller and smaller due the higher densities of electronic packaging afforded by Very Large Scale Integrated (VLSI) circuits. The reduction in size of such devices, however, is limited by the traditional rectangular displays which require a certain amount of area to be effective. A “shirt pocket” computer does not really fit comfortably in a shirt pocket and probably never will because of this dilemma. A new type of computer display is needed to achieve the potential for even yet smaller computing devices.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a new type of computer display which provides a natural scrolling capability, giving the appearance of a much larger display in a very small size.
According to the invention, there is provided a dynamic cylindrical display, enclosing the electronics of the device and containing a simple weighted cam that senses roll (using a rotation sensor much like in a mouse). The display itself may be a Liquid Crystal Display (LCD) or Organic Light Emitting Diode (OLED) display or other appropriate display technology. When the cylinder (about the size of a fat pen) is placed on a flat surface and rolled up and down, the pixel display scrolls in correspondence with the rolling movement, giving the visual feel of rolling a cylindrical magnifying glass across a finely printed document. A “snap-to” scrolling algorithm could make it easier for the user to stop right on the center of a line of text. Parallax algorithms could compensate for the cylindrically wrapped text making it appear flatter. Twisting the cap adjusts the angle of presentation for when the user is not looking straight down onto the display. A touch sensitive overlay allows the user to select menu items or hypertext links as the display “rolls over” that line of text. The display also works without a flat surface (although not as naturally) by turning it while holding it in the air.
REFERENCES:
patent: 5301222 (1994-04-01), Fujiwara
patent: 5600348 (1997-02-01), Bartholow et al.
patent: 5850059 (1998-12-01), Yishimura
patent: 6016135 (2000-01-01), Biss et al.
Danis Catalina M.
Kelley John F.
Nagy William A.
International Business Machines - Corporation
Kaufman, Esq. Stephen C.
McGuireWoods LLP
Said Mansour M.
Shankar Vijay
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