发明名称 |
Method for detecting leading edge of print medium |
摘要 |
A method for detecting the leading edge of a sheet of print medium by driving a line feed motor at a predetermined speed; scanning and storing a data block of the sheet by slices; determining the leading edge of the sheet, based on the scanned and stored data; calculating sheet position according to the edge determination, and calculating a drive value of the line feed motor according to the sheet position; and second driving the line feed motor according to the calculated drive value. The data of the scanned data block is stored such that a scanning level of pixel data for a given horizontal line is regularly stored in an address memory, and the determining step searches for a boundary on which both near-absolute black and near-absolute white pixel data values are indicated in the scanning and storing step.
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申请公布号 |
US6144886(A) |
申请公布日期 |
2000.11.07 |
申请号 |
US19980109406 |
申请日期 |
1998.07.02 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE, DONG-YUL |
分类号 |
H04N1/00;(IPC1-7):H04N1/04 |
主分类号 |
H04N1/00 |
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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