| 摘要 |
Both a system and method for optically imprinting and reading sound data onto a piece of printed sheet material such as a greeting card is provided. The system includes an encoding device for converting a sound message into a two-dimensional encodement, a printer for invisibly imprinting the encodement onto the greeting card, and a reader for optically reading the encodement and converting it into a sound corresponding to the message. The encoding device preferably converts the sound message into a compressed digitized form prior to its ultimate conversion into a two-dimensional encodement. The reader preferably includes a lens for focusing an image of the encodement onto the image sensor array. The sensor array responds to the image by generating a digital signal representative of the compressed sound that the reader decompresses and renders into an analog sound signal which is representative of the original sound image. Both the system and method are particularly useful in providing an individualized sound message on customized greeting cards.
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