发明名称 |
Communication system, information processing apparatus, output apparatus, control method, and memory medium |
摘要 |
It is an object to allow an output apparatus to certainly recognize an error when the error occurs at the time of a data transfer using an upper layer (IEEE 1284.4). In a communication system in which an information processing apparatus and an output apparatus can communicate data by using an interface constructed by the upper layer (IEEE 1284.4) and a lower layer (IEEE 1284), when the information processing apparatus detects an error at the time of a data communication using the upper layer, a, predetermined command (device ID request) specified in the lower layer is used in order to allow the output apparatus to recognize the occurrence of the error.
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申请公布号 |
US6678863(B1) |
申请公布日期 |
2004.01.13 |
申请号 |
US19990382637 |
申请日期 |
1999.08.25 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SUGIYAMA HIDEKI |
分类号 |
G06F3/12;G01R31/28;G06F11/00;G08C25/00;H03M13/00;H04L1/00;(IPC1-7):G06F11/00 |
主分类号 |
G06F3/12 |
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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