Fast multi-touch stylus and sensor

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:

• 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.

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. 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.

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:

• 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.