Patent ID: 7686692

Claim:
A method for interacting with a computer game, comprising: presenting a pattern code defined by at least two tags, each of the at least two tags being oriented to face a detectable direction; applying a light toward the pattern code at a specific time; capturing a first video frame of the pattern code before the light is applied to the pattern code in the detectable direction, the first video frame defining a first characteristic of the pattern code; capturing a second video frame of the pattern code when the light is applied to the pattern code, the second video frame defining a second characteristic of the pattern code; decoding the first characteristic and the second characteristic of the pattern code to produce decoded information, the first characteristic is different than the second characteristic, the first and second characteristic each define a code state of the pattern code before light is applied and when light is applied toward the detectable direction of the pattern code; and initiating an interactive command to the computer game, a type of the interactive command defined by the decoded information; wherein one of the tags has a reflective surface and one of the tags has a non-reflective surface, such that the second characteristic of the pattern coded has more illumination coming from the reflective surface while less coming from the non-reflective surface, thus defining the pattern code from the at least two tags.