| 5247578 |
Process for exchange of rights between microprocessor cards |
| Sep-21-1993 |
A process for exchange of rights between microprocessor cards, wherein multiple keys (K1, K2, . . . ) and varied keys (Ka5, Kb3) are used. A card to be debited calculates a voucher with varied key (Ka5)... |
| 5231663 |
Image processing system |
| Jul-27-1993 |
An image processing system receives a series of pixel elements representative of a scanned image. The system converts the pixel elements into a vector representation of the scanned image. The vector representation... |
| 5220501 |
Method and system for remote delivery of retail banking services |
| Jun-15-1993 |
A practical system and method for the remote distribution of financial services (e.g., home banking and bill-paying) involves distributing portable terminals to a user base. The terminals include a multi-line... |
| 5216716 |
Transmitting device of signal sequences |
| Jun-1-1993 |
Transmitting device of sequences of acoustic signals. The device comprises a transducer, a generator, a micrologic unit, a memory, a battery and a control means. The device transmits sequences that differ... |
| 5181245 |
Machine incorporating an accounts verification system |
| Jan-19-1993 |
The postage meter incorporates an accounts verification system which ensures that an authority, such as the U.K. General Post Office, is provided with regular and accurate readings without the need for... |
| 5007084 |
Payment Authorization and Information Device |
| Apr-9-1991 |
A Payment Authorization and Information Device for users of credit cards and other forms of credit receives billing information by tape or the like from the provider of the credit cards or from any such... |
| 4823388 |
Communications network using an enciphering and deciphering device |
| Apr-18-1989 |
A communications network system is constructed by connecting a plurality of customer terminals to one central terminal via communication lines. Enciphering devices and a deciphering device, such as IC... |
