| 摘要 |
A pitch recognition and optimization angle detector is integrated into a portable handheld electronic device, such as a text messaging device, to alert the user of an incorrect pitch to avoid excessive neck strain and potential injury. The pitch detector determines the angle in which the messaging device is currently oriented and compares the angle to an acceptable angle range. The detection system communicates information pertaining to the pitch to the user via either a pitch level indicator or an alert when the device is held outside of the acceptable angle range. The alert can be an icon, a color-coded display, a tactile alert, and an audible alert. The user can select the alert type or types. The acceptable angle range can be a default or user programmable. |
