Patent ID: 7577617
Filing Date: 2009-08-18
Classification: G07B

Abstract:
1. A method for dependably transmitting service data from a data center to remotely-located terminal equipment, comprising the steps of: offering new service data at a data center for future use at terminal equipment; forming a request for new service data at the terminal equipment; establishing a first communication between the terminal equipment and the data center and in said first communication transmitting said request data from the terminal equipment to the data center, receiving the request data at the data center, transmitting the new service data requested in the request data from the data center to the terminal equipment, and receiving and storing the new service data at the terminal equipment; and establishing a second communication between the terminal equipment and the data center and in said second communication forming a message at the terminal equipment that refers to the new service data stored at the terminal equipment, communicating said message from the terminal equipment to the data center, receiving the message from the terminal equipment at the data center and checking the message at the data center by comparison of information contained in the message with information generated from the new service data at the data center and, given a positive comparison result, transmitting a follow-up message from the data center to the terminal equipment allowing said terminal equipment, when appropriate, to use said new service data, and registering at the data center the valid transmission of the new service data to the terminal equipment.