| 摘要 |
<p>Both a method and apparatus for reading sound data invisibly imprinted on the surface of an object is provided. In the method, compressed sound data is optically imprinted onto the surface of an object as a two-dimensional encodement (12). An image of the encodement is focused onto an image sensor array (44, 46) that generates a digital signal representative of the image. The digital signal is processed into an expanded analog signal representative of the sound represented by the encodement. The analog signal is then converted into sound. The method is implemented by a hand-held data reader wand (70, 85) having a lens (72), an image sensor, a microprocessor (50) for decoding the output of the image sensor array into an analog sound signal, and a sound transducer such as a speaker. The method may be used to record and play back a voice commentary on not only sheet material objects such as photographs and greeting cards, but also three-dimensional articles such as clothing (98) and furniture (99, 100). <IMAGE></p> |
