System for displaying and reading patterns displayed on a display unit
First Claim
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1. A data transfer system, comprising:
- a video screen having a data display area;
means for displaying a synchronizing scan line having an intensity that increases with each video screen refresh at a predetermined location in the data display area of the video screen;
means for displaying an electronic data scan line having an intensity that may increase only at a plurality of predetermined locations on the scan line in the data display area of the video screen; and
a data input device comprisingsensing means for sensing the increase in intensity of the synchronizing scan line and for sensing an increase in intensity of the data scan line; and
means for determining a time difference between the time the sensing means senses the increase in intensity of the synchronizing scan line and the time the sensing means senses an increase in intensity of the data scan line whereby to determine the location of the increase in intensity of the data scan line in the data display area.
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Abstract
A system to transfer information from a video screen. A sensor embedded in a suction cup detects an increase in intensity of a synchronizing scan line and an increase in intensity of a data scan line and utilizes the time differential between the two events to determine the location of the increase in intensity of the data scan line. In an alternative embodiment, the intensity increase location may be transferred to an electronic musical instrument where it is analyzed by a microprocessor and the information is used to assign notes to the keys of a keyboard.
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Citations
11 Claims
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1. A data transfer system, comprising:
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a video screen having a data display area; means for displaying a synchronizing scan line having an intensity that increases with each video screen refresh at a predetermined location in the data display area of the video screen; means for displaying an electronic data scan line having an intensity that may increase only at a plurality of predetermined locations on the scan line in the data display area of the video screen; and a data input device comprising sensing means for sensing the increase in intensity of the synchronizing scan line and for sensing an increase in intensity of the data scan line; and means for determining a time difference between the time the sensing means senses the increase in intensity of the synchronizing scan line and the time the sensing means senses an increase in intensity of the data scan line whereby to determine the location of the increase in intensity of the data scan line in the data display area. - View Dependent Claims (2, 3, 4)
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5. A data transfer system for use with a video screen having a data display area, means for displaying a synchronizing scan line having an intensity that increases with each video screen refresh at a predetermined location in the data display area of the video screen and means for displaying an electronic data scan line having an intensity that may increase only at a plurality of predetermined locations on the scan line in the data display area of the video screen, comprising:
a data input device including sensing means for sensing the increase in intensity of a synchronizing scan line and for sensing an increase in intensity of a data scan line; and means for determining a time difference between the time the sensing means senses the increase in intensity of the synchronizing scan line and the time the sensing means senses an increase in intensity of the data scan line whereby to determine the location of the increase in intensity of the data scan line in the data display area. - View Dependent Claims (6, 7, 8, 9, 10, 11)
Specification