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Patent Searching and Data


Title:
COMMUNICATION DEVICE, CONTROL METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/199716
Kind Code:
A1
Abstract:
Provided is a communication device characterized by comprising: a connection unit that has a plurality of signal lines including a first signal line and a second signal line, and that forms a connection with an external recording device; a first communication means that communicates with the external recording device in a first transfer mode when a first initialization process is executed; a second communication means that communicates with the external recording device in a second transfer mode when a second initialization process is executed; a third communication means that communicates with the external recording device in a third transfer mode when a third initialization process is executed; and a control means. The communication device is characterized in that the control means performs control so as to determine whether or not a second signal indicating that the external recording device supports the second transfer mode has been inputted to the second signal line before a predetermined time has elapsed since output of a first signal to the first signal line, and, if it is determined that the second signal has been inputted, execute the second initialization process, and, if it is determined that the second signal has not been inputted, execute the first initialization process, and performs control so as to determine whether or not the external recording device supports the third transfer mode, on the basis of communication in the first transfer mode, and, if it is determined that the external recording device supports the third transfer mode, execute the third initialization process.

Inventors:
YOKOYAMA SHUMA (JP)
Application Number:
PCT/JP2021/005321
Publication Date:
October 07, 2021
Filing Date:
February 12, 2021
Export Citation:
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Assignee:
CANON KK (JP)
International Classes:
G06F13/38; G06F13/10
Foreign References:
JPH1040206A1998-02-13
JP2009258773A2009-11-05
JP2012093926A2012-05-17
US20190280534A12019-09-12
JP2006209744A2006-08-10
JP2020061110A2020-04-16
Attorney, Agent or Firm:
OHTSUKA PATENT OFFICE, P.C. (JP)
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