| 6671813 |
Secure on-line PC postage metering system |
| Dec-30-2003 |
A system for providing secure access and execution of application software stored on a first computer by a second computer using a communication device while a communication link is maintained between... |
| 6297892 |
Device for protecting data transmitted by a facsimile machine |
| Oct-2-2001 |
The invention relates to a device for protecting data transmitted by a facsimile machine and provides for encrypting and decrypting of data converted to a binary code. The device is detachably connectable... |
| 6282611 |
Digital information system, digital audio signal processor and signal converter |
| Aug-28-2001 |
In a digital information system for realizing the sale of information or the like having a commercial value in the form of a digital signal, and an audio processor, and signal processor suitably used with... |
| 5969283 |
Music organizer and entertainment center |
| Oct-19-1999 |
A music organizer and entertainment center provides a center having a microprocessor, sound card functions and high-volume data storage and retrieval units for playing back music according to a variety... |
| 5745579 |
Cellular telephone security adapter and method |
| Apr-28-1998 |
An adapter (10) for a cellular telephone includes a first coupling apparatus (21) disposed on a first surface (30) of the adapter (10). The first coupling apparatus (21) is for engaging coupling apparatus... |
| 5056137 |
Method and apparatus for encoding and decoding signals |
| Oct-8-1991 |
In a method and apparatus for encoding signals, signals are passed through a body of a material that modifies a characteristic of signals passing therethrough, such as an acousto-electromagnetic. Energy... |
| 4396802 |
Aswixs remote speaker and handset set |
| Aug-2-1983 |
A remote speaker and handset unit is interfaced with a satellite communicons system and a number of common users. A vocoder is interposed between each unit and the communications system to enable a real-time... |
| 4268720 |
Scrambler speech transmission and synchronization system |
| May-19-1981 |
A system is provided for time segment scrambling speech encoding, wherein an internal key code is provided for control thereof. The scrambling and reset units are synchronized by start and reset clock... |
| 4117271 |
Inductive communication system |
| Sep-26-1978 |
An apparatus providing multiple conversations over limited range. Pseudo-se modulations and specific address coding permit multiple conversations between a base station and several vehicles or between... |
