Browse Prior Art Database

Conserving Power in Wireless Gesture Input Devices Disclosure Number: IPCOM000132106D
Original Publication Date: 2005-Dec-01
Included in the Prior Art Database: 2005-Dec-01
Document File: 2 page(s) / 32K

Publishing Venue



Disclosed is a method of mitigating power demands for a wireless gesture input device using Faraday's law of induction.

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Conserving Power in Wireless Gesture Input Devices

We think the technology underlying the Nintendo Revolution (shipping in 2q 06) portends a surge in the popularity of wireless gesture input devices for many computing/mobile computing applications.

The Nintendo Revolution controller is a wireless single-handed controller that looks much like a remote control. The revolution controller can not only detect button presses, but also orientation relative to the TV screen, velocity, and distance. This allows for game interfaces designed around these new input paradigms, including : playing tennis by swinging the controller like a racket, casting a fishing reel with the game controller, and swordplay! - see this link:

These controllers use batteries for power, and in gaming applications, must stand up to multiple hours of continuous use, so battery life must be good.

We claim that we can make use of the gesture recognition ability of a wireless controller to mitigate its power demands. Specifically, there exists a technology whereby a magnet moving through a conductive coil produces a potential difference, via faraday's law of induction, and that voltage is used to charge an internal battery, such as in some emergency flashlights:

physics background:

We can make use of this device embedded within our wireless controller to convert the frequent gestures made with the device into power for the internal batteries.

Specifically, our system consists of:

A wireless controller capable of detecting 3D gestures and motion which is battery powered and which can be continuously charged via potential differences resulting from electromagnetic induction.

The controlled system (ie, game console or set top box) is capable of detecting the battery charge levels of the wireless input device
The controlled system OS can signal the running software periodically with the battery charge levels, or specifically at certain charge level events, such as 100% (full) or 5% (very low)

The controlled system software (ie, video game, TV tuner software) can receive charge level events and correspondingly direct the user to...