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Combination touch and transducer input system and method

  • US 9,304,623 B2
  • Filed: 03/28/2014
  • Issued: 04/05/2016
  • Est. Priority Date: 10/02/2008
  • Status: Active Grant
First Claim
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1. A pen-shaped transducer configured to be detected by a sensor including an array of electrodes, the pen-shaped transducer comprising:

  • a pen-shaped body;

    a pressure sensor configured to detect pressure applied to a tip of the pen-shaped body,a transducer controller configured to generate a signal corresponding to a pressure value detected by the pressure sensor,an antenna configured to transmit the signal corresponding to the pressure value to the sensor, anda drive current source configured to drive the transducer controller;

    wherein the transducer controller is further configured to format the pressure value detected by the pressure sensor in a data frame and encode the data frame pursuant to a defined encoding method, and to transmit the pressure value encoded by the defined encoding method via the antenna to the sensor;

    wherein the transducer controller is further configured to enter into low-current draw mode when the pressure value detected by the pressure sensor remains under a defined threshold value for a defined period of time; and

    wherein the transducer controller is further configured to;

    (i) operate in the low-current draw mode and compare the pressure value detected by the pressure sensor to the defined threshold value in the low-current draw mode; and

    (ii) upon determining that the detected pressure value equals to or exceeds the defined threshold value, switch from the low-current draw mode to awake mode, format the pressure value in the data frame and encode the data frame, and transmit the pressure value encoded by the defined encoding method with a start signal indicative of a start of the data frame via the antenna to the sensor.

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