7af8a57e__Saitama___Patent_applications__Description
[Patent application number] 20100222144 [Published] 09-02-2010 [Description] 
IMAGE-LINKED SOUND OUTPUT METHOD AND DEVICE - Intended is to inform a player of it through both the visual sense and the auditory sense that an action has been recognized. A velocity vector calculating unit calculates, by using the image of the action of the player taken with a camera (
Saito, Saitama - Patent applications