Quotables
"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7706838 | Physical presence digital authentication system The interactive authentication system allows a consumer to interact with a base station, such as broadcast media (e.g., television and radio) or PC, to receive coupons, special sales offers, and other information with an electronic card. The electronic card can also... | 04/27/2010 |
| 7568963 | Interactive toys A plurality of individual toys, at least a first one of which generates acoustic signals and at least a second one of which receives acoustic signals. When the second toy receives acoustic signals from the first toy, it responds, for example, by generating a sound a... | 08/04/2009 |
| 7383297 | Method to use acoustic signals for computer communications A method of communicating with an electronic device, comprising: providing a computer having an audible sound receiving and generating sub-system including a microphone; transmitting from a source at least one ultrasonic acoustic signal, encoded with information to ... | 06/03/2008 |
| 7334735 | Card for interaction with a computer A smart card comprising: a memory for storing information; at least one transmitting or receiving antenna; and a low frequency circuit, for handling information associated with said antenna and said memory, which information is modulated at a modulation frequency of... | 02/26/2008 |
| 7280970 | Sonic/ultrasonic authentication device A method for verifying and identifying users, and for verifying users' identity, by means of an authentication device capable of transmitting, receiving and recording audio or ultrasonic signals, and capable of converting the signals into digital data, and performin... | 10/09/2007 |
| 7260221 | Personal communicator authentication A method of authentication using an electronic device (20), comprising: providing a computer (22, 24, 26, 28, 140) having a sound receiving (28) and generating sub-system including a microphone (26); providing a personal communicator (... | 08/21/2007 |
