TOUCH PAD PALM DETECTION
First Claim
1. A computer-implemented method of determining whether to move a pointer based on user contact with a touch-sensitive input device, comprising:
- determining that the user contact corresponds to the user'"'"'s palm if the user contact was previously determined to correspond to the user'"'"'s palm;
prohibiting movement of the pointer based on the user contact if the user contact was previously determined to correspond to the user'"'"'s palm;
determining that the user contact corresponds to the user'"'"'s palm if a pressure of the user contact is more than a predetermined pressure threshold; and
prohibiting movement of the pointer based on the user contact if the user contact is determined to correspond to the user'"'"'s palm based on determining the pressure of the user contact is more than the predetermined pressure threshold.
2 Assignments
0 Petitions
Accused Products
Abstract
In certain aspects of the present disclosure, a system for preventing a palm from being incorrectly identified as a finger on a touch-sensitive input device and causing unintentional pointer movement or other unintended operation is provided. A dampened region may be defined on the surface of the touch-sensitive input device within which a user contact may not be reliably identified as a finger or a palm using a pressure threshold. In one aspect, a user contact that is within the dampened region and is below the pressure threshold may be prohibited from causing pointer movement unless the speed of the user contact exceeds a speed threshold. In one aspect, a user contact that is outside the dampened region may be identified as a finger or a palm based on comparing a pressure (e.g., contact area) of the user contact with the pressure threshold.
6 Citations
27 Claims
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1. A computer-implemented method of determining whether to move a pointer based on user contact with a touch-sensitive input device, comprising:
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determining that the user contact corresponds to the user'"'"'s palm if the user contact was previously determined to correspond to the user'"'"'s palm; prohibiting movement of the pointer based on the user contact if the user contact was previously determined to correspond to the user'"'"'s palm; determining that the user contact corresponds to the user'"'"'s palm if a pressure of the user contact is more than a predetermined pressure threshold; and prohibiting movement of the pointer based on the user contact if the user contact is determined to correspond to the user'"'"'s palm based on determining the pressure of the user contact is more than the predetermined pressure threshold. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9)
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6. (canceled)
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10. A machine-readable storage medium comprising machine-readable instructions for causing a processing unit to execute a method of determining whether to move a pointer based on user contact with a touch-sensitive input device, the method comprising:
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determining that the user contact corresponds to the user'"'"'s finger if the user contact was previously determined to correspond to the user'"'"'s finger; allowing movement of the pointer based on the user contact if the user contact was previously determined to correspond to the user'"'"'s finger; determining that the user contact corresponds to the user'"'"'s finger if a pressure of the user contact is less than a predetermined pressure threshold; and allowing movement of the pointer based on the user contact if the user contact is determined to correspond to the user'"'"'s finger based on determining the pressure of the user contact is less than the predetermined pressure threshold. - View Dependent Claims (11, 12, 13, 14, 16, 17, 18)
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15. (canceled)
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19. A system for determining whether to move a pointer based on user contact with a touch-sensitive input device, the system comprising:
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the touch-sensitive input device; and a processing unit configured to; receive information from the touch-sensitive device about the user contact; determine from the information that the user contact corresponds to the user'"'"'s palm if the user contact was previously determined to correspond to the user'"'"'s palm; prohibit movement of the pointer based on the user contact if the user contact was previously determined to correspond to the user'"'"'s palm; determine that the user contact corresponds to the user'"'"'s palm if a pressure of the user contact is more than a predetermined pressure threshold; and prohibit movement of the pointer based on the user contact if the user contact is determined to correspond to the user'"'"'s palm based on determining the pressure of the user contact is more than the predetermined pressure threshold. - View Dependent Claims (20, 21, 22, 23, 25, 26, 27)
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24. (canceled)
Specification