Fast multi-touch stylus and sensor
First Claim
1. A stylus and touch sensitive device comprising:
- a. the stylus comprising a stylus transmitter for transmitting a stylus signal;
b. the touch sensitive device comprisingi. a plurality of row conductors, each of the plurality of row conductors associated with a row transmitter and a row receiver, the row transmitter adapted to simultaneously transmit a plurality of row signals, each on its associated row conductor, each of the row signals being orthogonal to each other of the plurality of row signals transmitted on each other of the plurality of row conductors, the row receiver being adapted to detect the stylus signal;
ii. a plurality of column conductors, each of the plurality of column conductors associated with a column receiver, the column receiver being adapted to detect the presence of each of the row signals transmitted by the row transmitter associated with each of the row conductors and the stylus signal to the extent that such signals are present on the column conductors;
iii. processor for determining a location of the at least one transmitter with respect to the touch sensitive device based upon the signals received by the row receivers and the column receivers;
c. wherein the at least one stylus signal is orthogonal to each of the plurality of row signals.
2 Assignments
0 Petitions
Accused Products
Abstract
A stylus and touch sensitive device are disclosed. The stylus includes a stylus transmitter for transmitting a stylus signal. The touch sensitive device includes row conductors, each of which is associated with a row transmitter and a row receiver. The row transmitter is adapted to simultaneously transmit row signals, each on its associated row conductor, each of the row signals being orthogonal to each other of the plurality of row signals transmitted on each other of the row conductors. The row receiver is adapted to detect the stylus signal. Column conductors are provided, each associated with a column receiver that is adapted to detect the presence of each of the row signals transmitted by the row transmitter and the stylus signal.
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Citations
20 Claims
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1. A stylus and touch sensitive device comprising:
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a. the stylus comprising a stylus transmitter for transmitting a stylus signal; b. the touch sensitive device comprising i. a plurality of row conductors, each of the plurality of row conductors associated with a row transmitter and a row receiver, the row transmitter adapted to simultaneously transmit a plurality of row signals, each on its associated row conductor, each of the row signals being orthogonal to each other of the plurality of row signals transmitted on each other of the plurality of row conductors, the row receiver being adapted to detect the stylus signal; ii. a plurality of column conductors, each of the plurality of column conductors associated with a column receiver, the column receiver being adapted to detect the presence of each of the row signals transmitted by the row transmitter associated with each of the row conductors and the stylus signal to the extent that such signals are present on the column conductors; iii. processor for determining a location of the at least one transmitter with respect to the touch sensitive device based upon the signals received by the row receivers and the column receivers; c. wherein the at least one stylus signal is orthogonal to each of the plurality of row signals. - View Dependent Claims (2)
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3. A method for detecting a position of a stylus with respect to a touch sensitive device, the touch sensitive device comprising a plurality of row conductors and a plurality of column conductors, the method comprising:
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simultaneously transmitting each of a plurality of orthogonal row signals on a respective one of at least some of the plurality of row conductors; transmitting at least one stylus signal from a stylus in proximity to the touch sensitive device, the stylus signals being orthogonal to each of the plurality of orthogonal row signals; detecting an amount of each of the plurality of orthogonal row signals and stylus signals present on each of the plurality of column conductors; using at least the detected amount of the orthogonal stylus signal to detect a position of the stylus with respect to the touch sensitive device. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. A stylus and touch sensitive device comprising:
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a. the stylus comprising three stylus transmitters, each stylus transmitter adapted to transmit a unique stylus signal orthogonal from the other unique stylus signals; b. the touch sensitive device comprising i. a plurality of row conductors, each of the plurality of row conductors associated with a row receiver, the row receiver being adapted to receive a row signal; ii. a plurality of column conductors, each of the plurality of column conductors associated with a column receiver, the column receiver being adapted to receive a column signal; iii. processor adapted to determine a strength for each of the unique stylus signals in received column signals and row signals and determine a locational position of the stylus with respect to the touch sensitive device based upon the determined strengths. - View Dependent Claims (13, 14, 15, 16)
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17. A touch sensitive device adapted to determine the location and orientation of a stylus, the touch sensitive device having a plurality of row conductors and a plurality of column conductors, each of the plurality of row conductors and each of the plurality of column conductors being associated with a receiver adapted to receive a signal present on its associated row or column conductor, the stylus comprising three stylus transmitters, each stylus transmitter adapted to transmit a unique stylus signal orthogonal from the other unique stylus signals, the touch sensitive device comprising:
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processor adapted to; a. determine a strength for each unique stylus signals in a signal received by each receiver; and b. determine a position and orientation of the stylus with respect to the touch sensitive device based upon the determined strengths. - View Dependent Claims (18, 19, 20)
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Specification