Fast multi-touch stylus and sensor
First Claim
1. A stylus and touch sensitive device comprising:
- 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 comprisingi. 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. the path of each of the row conductors crossing the path of each of the column conductors; and
iv. 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.
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.
-
Citations
16 Claims
-
1. A stylus and touch sensitive device comprising:
-
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. the path of each of the row conductors crossing the path of each of the column conductors; and iv. 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 (2, 3, 4, 5)
-
-
6. 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, the path of each of the row conductors crossing the path of each of the 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 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:
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 (7, 8, 9)
-
10. A method of determining the position and orientation of a stylus with respect to a capacitive sensor, the stylus comprising three stylus transmitters, each adapted to transmit a unique stylus signal orthogonal from the other unique stylus signals, the method comprising:
-
a. receiving signals from the capacitive sensor; b. determining a strength for each unique stylus signals in the received signals; and c. determining a position and orientation of a stylus with respect to the capacitive sensor based upon the determined strengths. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
Specification