Communication system, information processing apparatus, output apparatus, control method, and memory medium
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United States of America Patent
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Jan 13, 2004
Grant Date -
N/A
app pub date -
Aug 25, 1999
filing date -
Aug 28, 1998
priority date (Note) -
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Abstract
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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