US 11,861,991 B2
Method of communication between two sub-systems constituting a modular payment terminal
Benoît Pouhaer, Antony (FR); Bernard Schang, Le Mesnil Saint Denis (FR); Dominique Cazou, Saint Jean d'Illac (FR); and Christophe Auffray, Rueil Malmaison (FR)
Assigned to BANKS AND ACQUIRERS INTERNATIONAL HOLDING, Paris (FR)
Appl. No. 17/780,607
Filed by Banks and Acquirers International Holding, Paris (FR)
PCT Filed Nov. 25, 2020, PCT No. PCT/EP2020/083424
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/105245, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 1913497 (FR), filed on Nov. 29, 2019.
Prior Publication US 2022/0301383 A1, Sep. 22, 2022
Int. Cl. G06F 9/4401 (2018.01); G07F 7/08 (2006.01); G06Q 20/20 (2012.01)
CPC G07F 7/0873 (2013.01) [G06F 9/4418 (2013.01); G06Q 20/204 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A communication method of communication between a first subsystem and at least one second subsystem embedded into a piece of electronic equipment, the first subsystem executing a first operating system and the second subsystem executing a second operating system, the method comprising the following acts, implemented by the first subsystem which is in a first operating state:
detecting at least one event triggering a change in an operating state of said first subsystem from the first operating state to a second operating state,
obtaining a datum representative of a current operating state of the second subsystem, and
in response to the current operating state of the second subsystem being different from the second operating state of the first subsystem, transmitting, to the second subsystem, a message comprising at least one command triggering a change in said second subsystem from the current operating state to a new operating state similar to the second operating state of the first subsystem when the at least one command is executed by the second subsystem.