RotoView Non-linear Dynamic Response (NLDR) Algorithms The RotoView Non-linear Dynamic Response (NLDR) algorithms determine the amount of view navigation in response to the tilt and movement of the hand held device. The NLDR algorithms exhibit two main features:
RotoView Technology    White Paper Evaluation System    How It Works    Features/Specifications    Roadmap     Quick Start    Press Why add RotoView? Support How To Order Other Products  About INNOVENTIONS News Releases Company Profile Contact us at (281) 879-6226 sales@innoventions.com	Non-linear relation between the amount of tilt or hand movement and the amount (or rate) of view navigation. This non linear relation further changes dynamically during the navigation process. We should note that the term "non-linear" is used loosely here to indicate that the response to the sensor data is not necessarily approximated by a single line. In reality, the response graph is approximated by multiple short linear sections. This provides for proper filtering of too strong hand movements and setting a threshold level for the response. Fig. 1 (below) illustrates a simplified example of the dynamic behaviour of the NLDR features taken along one axis only. The bottom graph (green) shows the raw sensor data over time, representing two consequent side-to-side tilts of the hand held device. The top graph (red) shows the view navigation rate by which RotoView responds to the sensor data. We can see that the navigation rate is coarse (strong) during the first tilt and it dynamically reduces to provide a fine navigation during the second side-to-side tilt. We define the relation between the view navigation rate and the sensor data along each axis as the sensitivity. The sensitivity of both axes may be different. The graph depicting the dynamic non-linear change of the sensitivity versus time is the response graph as shown in Fig. 2 (below). Here, the sensitivity for the first 2 seconds of navigation time is set to 10 for initial coarse view navigation. From 2 seconds to 6 seconds the sensitivity goes down to 1, thus providing fine view navigation. The NLDR algorithms create a natural subliminal closed loop comprising the user's hand movements and the resultant navigation. By eliminating the need for one-to-one mapping between a tilt or hand movement and the exact view positioning, RotoView allows for smoother and more intuitive view navigation. Users can setup the NLDR to their exact preference to achieve the most comfortable results. The NLDR algorithms further enable the use of sensors with lower accuracy since there is no need for an exact alignment of the displayed view with the relative tilt. This may have important low cost benefits for mass production. For more information The RotoView NLDR algorithms are protected by our patents and trade secrets. Partial implementation in our RotoView Evaluation System introduces the NLDR algorithms to potential licensees. Further information requires a Non-Disclosure Agreement. Please contact us at 1+ (281) 879-6226, fax 1+ (281) 879-6415, e-mail sales@innoventions.com, or complete the information request form.

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