发明名称 |
Scanner-previewer combination including a programmable sampling circuit for permitting an entire frame of an original to be stored in a fixed-capacity memory |
摘要 |
Signals corresponding to the color content of an original, generated by scanning the original mounted on a rotating drum, are sampled and held at a coarse or low-resolution scanning rate. The number of samples per line (revolution) and the number of revolutions along which scanning is performed correspond to a raster scan of a video display. The signals are converted into digital signals and stored in a memory. The rate of sampling is adjusted so that samples from an entire frame of the original fill the memory. The stored signals are converted to analog signals, adjusted by a color computer to simulate a printing process and displayed at a raster scan rate on a video display. The apparatus according to the invention may be a scanner-previewer combination to achieve a previewing of the original, or may be a scanner with additional apparatus.
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申请公布号 |
US4635108(A) |
申请公布日期 |
1987.01.06 |
申请号 |
US19830531144 |
申请日期 |
1983.09.09 |
申请人 |
HAZELTINE CORPORATION |
发明人 |
REEBER, NICHOLAS J.;KERBEL, SHELDON J. |
分类号 |
H04N1/32;H04N1/60;(IPC1-7):G03F3/10;H04N1/04;H04N1/06;H04N1/46 |
主分类号 |
H04N1/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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