| 摘要 |
<P>PROBLEM TO BE SOLVED: To aim at normal printing in either of a case of receiving packeted data on the basis of an IEEE 1284.4 protocol and a case of receiving data of a conventional stream method. <P>SOLUTION: Discrimination is made on whether data transmitted to an interface control channel in communication by the IEEE 1284.4 protocol is 1284.4 packeted data or a non-packeted image data command group by analyzing 6 bites of the forefront, and in non-packeted data, the discrimination is repeated up to detecting the forefront of the next packet while performing the prescribed bite number of processings to a rear stage. <P>COPYRIGHT: (C)2004,JPO |
