| | Attitude indicator and activity monitoring device - Patent 6611783 (Site not responding. Last check: 2007-11-03) |
 | | The microcontroller 134 within the depicted embodiment performs reading and interpretation of accelerometer output signals, the latching of circuit power, the control of power to the acceleration sensor, and the modulation of the RF transmitter with data to be transmitted to the remote attitude receiver unit. |
 | | In addition, the firmware programming of the microcontroller may be adapted to suit different applications of the sensor, and to accept firmware updates thereupon. |
 | | In addition, it is preferable that the individual microcontroller chips within individual attitude transmitter units be configured, or programmed, with a unique identification code that may be utilized by the firmware for encoding an identifier within the RF output so that individual attitude indication devices may be distinguished from one another. |
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