Patent ID: 8024057

Claim:
An audio recording and playback system comprising: (A) an encoded substrate comprising a printed position-coding pattern identifying an identity of the substrate and a plurality of locations on the substrate; (B) a handheld electronic pen for interacting with said encoded substrate, said pen comprising: a microphone for recording audio; an audio output device for playing said recorded audio; an image sensor for capturing images of at least part of the position-coding pattern; a processor configured for determining the identity of the substrate and one or more positions on said substrate using captured images of the position-coding pattern; means for associating recorded audio with the identity of the substrate and one or more positions on said substrate; means for storing said recorded audio associated with the identity of the substrate and said one or more positions; and an electronic display extending along a longitudinal axis of the pen for displaying information to a user, wherein, in an audio recording mode, said pen is configured to: activate said microphone for recording audio; determine, using said image sensor and said processor, the identity of the substrate and one or more positions on said encoded substrate during interaction with said substrate; and associate the identity of the substrate and said one or more positions with said recorded audio, and further wherein, in an audio playback mode, said pen is configured to: determine, using said image sensor and said processor, the identity of the substrate and one or more positions on said encoded substrate; retrieve recorded audio associated with the identity of the substrate and said one or more positions; and playback said recorded audio via said audio output device.