公开(公告)号：US20090237745A1

公开(公告)日：2009-09-24

申请号：US12403927

申请日：2009-03-13

Applicant: RYU HASEGAWA

Inventor： RYU HASEGAWA

IPC: H04N1/40 ,  H04N1/04

CPC classification number: H04N1/00002 ,  H04N1/00013 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00055 ,  H04N1/00063 ,  H04N1/00082 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/00925 ,  H04N1/121 ,  H04N1/1235 ,  H04N1/401 ,  H04N2201/0094 ,  H04N2201/044

Abstract: During a sheet-through operation, for a first original, a shading operation is performed to acquire white data and a light-quantity measuring operation is performed to acquire a reference value. For subsequent originals, only the light-quantity measuring operation is performed to acquire a subsequent light quantity. If the reference value and the subsequent light quantity differ greatly, the shading operation is performed at this time point to acquire new white data. The sheet-through operation is not stopped when the shading operation is not performed and the sheet-through operation is stopped when the shading operation is performed.

Abstract translation: 在直通操作期间，对于第一原稿，执行阴影操作以获取白色数据，并执行光量测量操作以获取参考值。 对于随后的原稿，仅进行光量测量操作以获取随后的光量。 如果参考值和后续光量差异很大，则在该时间点执行阴影操作以获取新的白色数据。 当不执行阴影操作并且当执行阴影操作时，直通操作停止时，片刻通过操作不停止。