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US Patent 4,872,009
| Number: | 4,872,009 |
| Title: | Method and apparatus for data compression and restoration |
| Filed: | 07-Dec-1987 |
| Granted: | 03-Oct-1989 |
| Inventor: | Tsukimaya et al. |
| Assignee: | Hitachi |
Comment by FAQ:This patent on run length encoding covers the 'invention' of limiting the run length to 16 bytes and thus the encoding of the length on 4 bits.
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