Touch sensing display screen apparatus
First Claim
1. Touch sensing display apparatus, comprising in combination:
- a display means for visibly manifesting data on a surface thereof; and
a computer system electrically connected to said display means for controlling the manifesting of data on said display means; and
a frame means; and
a plurality of spring elements connected to said frame means and to said display means, said spring elements being the sole support for said display means; and
a plurality of strain sensor means associated with said spring elements, said sensor means providing electrical output signals in response to strains imposed in said spring elements by relative movement between said display means and said frame means; and
electrical signal calculating means connected to receive said electrical signals from said plurality of strain sensor means, said calculating means calculating from said signals the locus and magnitude of singular forces imposed on said display means, said calculating means being connected to said computer system for providing results of its calculations thereto.
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Accused Products
Abstract
A touch sensing direct input data display device is described. The data display screen is directly and solely supported within a housing by stiff springs having essentially uniaxial freedom of motion. Strain gauge sensors are applied directly to the springs and are connected in a full Wheatstone bridge sensing circuit. The outputs of the sensors are fed to a calculating and processing device for calculaating the X, Y and Z coordinate information relative to the point on the face of the display which has been pushed or touched. The Z component is of total force and the X any Y components give the two dimensional location for the application of the force measured in the Z axis. The stiff springs allow very little deflection to occur under normal touch imposed fores on the display screen. They permit essentially uniaxial motion only in the Z axis. The system is mechanically robust and may be shipped and subjected to dropping or impact loads normally encountered in shipping without damage, has a relatively high natural frequency of vibration and produces high level, relatively continuous output signals for use.
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Citations
12 Claims
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1. Touch sensing display apparatus, comprising in combination:
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a display means for visibly manifesting data on a surface thereof; and a computer system electrically connected to said display means for controlling the manifesting of data on said display means; and a frame means; and a plurality of spring elements connected to said frame means and to said display means, said spring elements being the sole support for said display means; and a plurality of strain sensor means associated with said spring elements, said sensor means providing electrical output signals in response to strains imposed in said spring elements by relative movement between said display means and said frame means; and electrical signal calculating means connected to receive said electrical signals from said plurality of strain sensor means, said calculating means calculating from said signals the locus and magnitude of singular forces imposed on said display means, said calculating means being connected to said computer system for providing results of its calculations thereto. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A touch sensing display apparatus, comprising in combination:
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a display means for visibly manifesting data on a surface thereof; and
a frame means; anda plurality of spring elements connected to said frame means and to said display means, said spring elements being the sole support for said display means; and a plurality of strain sensor means associated with said springs, said plurality of strain sensor means providing electrical output signals in response to strains imposed in said spring elements by relative movement between said display means and said frame means. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification