Printing apparatus and control method thereof, and printing system

摘要

This invention has as its object to allow an authentication process that avoids unnecessary information from being stored in a digital camera irrespective of whether or not a digital camera connected to the printer has a direct print function. To this end, in this invention, in an early stage of connection between a digital camera DSC and PD printer, the PD printer side requests an object which contains a keyword as authentication information of those which are stored and held by the DSC (S29). As a result, after it is determined the returned information contains authentication information, the printer notifies the DSC of its own authentication information (S33).

主权项

1. A print apparatus which is arranged to communicate directly with a digital camera via a communication unit using the PTP protocol and to serve as a host device during communication with the digital camera, the digital camera being used as a user interface device for instructing printing, for printing a sensed image stored in a memory attached to the digital camera, and to serve as a slave device during communicating with the print apparatus, the print apparatus comprising:
a search unit constructed to search, in response to the start of communication with the digital camera by said communication unit, the digital camera for a script object indicating compatibility with direct printing by requesting the digital camera to send information, one by one, until authentication information is found in the information sent for a script object or there is no further script objet for which to request information stored in the digital camera, for script objects, said authentication information being managed by the digital camera as information to be communicated in the PTP protocol and indicating that the digital camera can communicate using a predetermined direct printing protocol used in an application layer; and a notification unit constructed to notify the digital camera of authentication information being managed by the print apparatus as information to be communicated in the PTP protocol and indicating that the print apparatus can communicate using the predetermined direct printing protocol used in the application layer, after receiving from the digital camera the authentication information indicating that the digital camera can communicate using the predetermined direct printing protocol used in the application layer; wherein, after said notification unit notifies the digital camera the authentication information, the print apparatus receives a print job from the digital camera using the predetermined direct printing protocol.