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US 6,285,870 B1Granted
Telephony device comprising a base station and at least one handset, subscription method of a handset, handset and base station suitable for such a device
AssigneeU.S. Philips Corporation
InventorChristophe Lorieau
Life of this patent
Estimating the term…
Abstract
A telephony device includes a wireless handset having a memory and a processor; and a base station having a connection to a telephone line and a transceiver for communicating with the wireless handset. The processor encrypts data to form encrypted data prior to storage in the handset memory, and stores the encrypted data in the handset memory. Further, the processor reads the encrypted data from the handset memory and decrypts the encrypted data for further use.
Claims18
A telephony device comprising:
- a wireless handset having a memory and a processor;
- and
- a base station having a connection to a telephone line and a transceiver for communicating with the wireless handset;
- wherein said processor encrypts data to form encrypted data prior to storage in said memory, and stores said encrypted data in said memory;
- and
- wherein said processor encrypts said data using a reversible function, said reversible function exchanging high and low nibbles in each octet of said data.
3 more elements
A wireless handset for communicating with a base station comprising:
- a memory and a processor;
- wherein said processor encrypts data to form encrypted data prior to storage in said memory, and stores said encrypted data in said memory;
- and
- wherein said processor encrypts said data using a reversible function, said reversible function exchanging high and low nibbles in each octet of said data.
1 more element
A method of securing data in a wireless handset comprising:
- encrypting data to form encrypted data prior to storage in a memory of said handset;
- storing said encrypted data in said memory;
- wherein said encrypting act encrypts said data using a reversible function, said reversible function exchanging high and low nibbles in each octet of said data.
Dependencies are inferred from the claim text.