Computer with a pen or touch sensitive display
AssigneePsion Digital Limited
InventorMARTIN PHILIP RIDDIFORD
Life of this patent
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Abstract
A computer with a touch sensitive or pen sensitive display is disclosed in which the position of the fully opened display has been designed in order that the torque typically applied to the top most pen or touch sensitive part of the display, in relation to a rotational axis about which the computer would rotate if it were to tip backwards, is less than that needed to cause the computer to tip backwards about that rotational axis. The computer is therefore stable even when the display is being touched by pen or finger, unlike conventional clam shell designs.
Claims21
A processor controlled device comprising:
- a display and a base, wherein
- the display is a touch sensitive or pen sensitive display when in an opened, viewing position with respect to the base;
- and
- said viewing position is such that the maximum torque typically applied to the display by a user in the ordinary use of the device, in relation to a rotational axis about which the device would rotate if it were to tip backwards, is less than that needed to cause the device to tip backwards about that rotational axis, but would be sufficient to cause such tipping if the display were in a similar position and hinged in a conventional clam shell arrangement at the rear of the base.
A processor controlled device with a touch sensitive or pen sensitive display, wherein
- the position of the fully opened display is such that the maximum torque typically applied to the display by a user in the ordinary use of the device, in relation to a rotational axis about which the computer would rotate if it were to tip backwards, is less than that needed to cause the computer to tip backwards about that rotational axis, but would be sufficient to cause such tipping if the display were hinged in a conventional clam shell arrangement at the rear of the computer;
- and
- the torque is less than that needed to cause tipping because the length of the moment arm related to the torque is less than the length the moment arm would be if the display were hinged at a fixed point at the rear of the computer in a conventional clam shell arrangement.
A microprocessor controlled device comprising:
- a base having a top portion and bottom portion, said bottom portion adapted to rest on a horizontal flat surface;
- a touch or pen sensitive screen rotatably mounted to said top portion of said base, the screen's rotation limited to a maximum angle with respect to said top portion to permit easy viewing of the screen;
- and
- said screen being positioned with respect to the top portion such that a line perpendicular to the screen and passing through the top most touch sensitive portion of the screen also passes through the base.
A microprocessor controlled device comprising:
- a display and a base, wherein
- the base comprises a rear edge;
- the display is a touch or pen sensitive screen mounted to said base, and is capable of moving between a closed position generally parallel to the base wherein the screen is not available for viewing and an open, viewing position wherein the screen is angled back from the base and is facing an expected location of a user;
- the display configured to receive touch or pen inputs in the open viewing position;
- and
- the location of the rear edge with respect to the screen being such that the device will not rotate about the rear edge upon application of the maximum torque typically applied to the display by a user in the ordinary use of the device.
Dependencies are inferred from the claim text.