US 12,273,427 B2
Notification sending apparatus, notification receiving apparatus, notification delivery system including these, and notification sending method
Yuhei Yoshimoto, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by Canon Kabushiki Kaisha, Tokyo (JP)
Filed on Jun. 22, 2023, as Appl. No. 18/339,351.
Claims priority of application No. 2022-102801 (JP), filed on Jun. 27, 2022.
Prior Publication US 2023/0421656 A1, Dec. 28, 2023
Int. Cl. H04L 67/55 (2022.01)
CPC H04L 67/55 (2022.05) 13 Claims
OG exemplary drawing
 
1. A notification sending apparatus in a notification delivery system including the notification sending apparatus for sending notifications and a notification receiving apparatus for receiving the notifications, the notification sending apparatus comprising:
at least one memory storing instructions; and
at least one processor that executes the stored instructions to function as:
a self notification identifier attaching unit configured to attach a self notification identifier to each notification, the self notification identifier having at least a sending ordinal position identification function;
a sent notification identifier attaching unit configured to attach, to each notification, the self notification identifier attached to a notification that was sent immediately before each notification, as a sent notification identifier;
a sending unit configured to send the notification receiving apparatus the notifications, each of which is attached with the self notification identifier and the sent notification identifier; and
a re-sending unit configured, upon receipt of a re-send request including range specifying information from the notification receiving apparatus, to obtain at least one notification that has been sent and needs to be re-sent based on the range specifying information, and to re-send the at least one obtained notification to the notification receiving apparatus,
wherein the notification receiving apparatus determines whether the sent notification identifier is the same as the latest self notification identifier stored in the notification receiving apparatus, and if the sent notification identifier is different from the latest self notification identifier, the notification receiving apparatus generates the range specifying information on the basis of the sent notification identifier and the latest self notification identifier.