| 摘要 |
<p>A method for archiving a binary data bit stream onto at least one frame (29) of film (11) commences by encoding the binary bit stream using a prescribed set of gray levels. Thereafter, a successive one of a set of sub-frames within the at least one frame is aligned with a beam (15). The beam scans each successive sub-frame to expose each of a successive set of data cells within that sub-frame with light at a gray level corresponding each of a set of bits to be written within each successive data cell.</p> |
