Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 6111538 | Cellular positioning system (CPS) Positioning system for locating a mobile body comprising a plurality of earth based spread spectrum (SS) broadcasting stations arranged geographically in a cellular pattern. Each SS broadcasting station include a modulator providing a channel signal struc... | 08/29/2000 |
| 6049548 | Multi-access CS-P/CD-E system and protocols on satellite channels applicable to a group of mobile users in close proximity A multiple access RF communication system in which a plurality of mobile user transceivers communicate with a central hub transceiver through an earth orbiting satellite, and wherein groups of mobile user transceivers in close proximity with each other sh... | 04/11/2000 |
| 6043918 | Laser satellite communication systems A laser satellite communication system which avoids atmospheric, wind and turbulence effects. A satellite or high altitude platform communication system includes an earth-orbiting satellite or high altitude platform carrying a laser communications receive... | 03/28/2000 |
| 6020845 | Satellite for increasing the utility of satellite communication systems An existing TDRSS satellite communication system is incorporated, together with low-power ground-based remote transceivers of special design, and additional beamforming and steering elements at the ground terminals, to make possible digital communication ... | 02/01/2000 |
| 5991596 | Wireless request channel for use with information broadcast system An information broadcast system having a broadband broadcast system selected from cable and satellite for broadcasting requested information from a selected information source, including the Internet, to one or more selected subscriber stations includes a... | 11/23/1999 |
| 5953327 | Class of low cross correlation non-palindromic synchronization sequences for code tracking in synchronous multiple access communication systems A method and apparatus are provided which enables all return links from the remote stations in a star configured CDMA system to be maintained in time synchronization. This method employs special synchronization codes in conjunction with a standard CDMA ch... | 09/14/1999 |
| 5938737 | Internet upstream request compression Interactive internet activities are a very popular means for gathering information for business, personal, medical, entertainment and other purposes. Most internet interaction is asymmetrical in nature in that a client's requests for information are much ... | 08/17/1999 |
| 5930688 | Method and apparatus for intermodulation noise suppression in RF power amplifiers An apparatus and method for suppressing intermodulation noise in a radio frequency power amplifier. Intermodulation noise suppression is achieved by use of an amplitude limiter connected to the signal source and a shaping filter connected between the ampl... | 07/27/1999 |
| 5798726 | Air traffic surveillance and communication system Air traffic surveillance and communication system for air traffic controllers includes a plurality of ground based first digital radio transceivers, each first digital radio transceiver being located in specific geographic sectors, respectively, and havin... | 08/25/1998 |
| 5726893 | Cellular telephone with voice-in-data modem A GPS system has a plurality of satellites transmitting time and location data over radio frequency signals which enable a mobile GPS receiver on the ground to determine its position, includes a source of satellite data message block containing the epheme... | 03/10/1998 |
| 5701328 | Chirped spread spectrum positioning system Positioning system for locating a mobile body comprising a plurality of earth based spread spectrum (SS) broadcasting stations arranged geographically in a cellular pattern. Each SS broadcasting station include a modulator providing a channel signal struc... | 12/23/1997 |
| 5640453 | Universal interactive set-top controller for downloading and playback of information and entertainment services A universal interactive control system for the downloading and playback of information and entertainment services from one or more network distribution centers, said one or more network distribution centers providing information and entertainment signals ... | 06/17/1997 |
| 5638399 | Multi-beam satellite communication system with user terminal frequencies having transceivers using the same set of frequency hopping The satellite radio communication system of this invention provides communication between one or more service centers and an ensemble of fixed and mobile user terminals. One or more earth orbiting satellites are provided with each satellite having transmi... | 06/10/1997 |
| 5630206 | Position enhanced cellular telephone system A position monitoring system having a position finder subsystem connected via a cellular telephone to a central monitoring station, a receive/transmit device carried with the position monitoring subsystem. A remote personal signalling subsystem comprising... | 05/13/1997 |
| 5604765 | Position enhanced communication system including system for embedding CDMA navigation beacons under the communications signals of a wireless communication system A cellular telephone system having three or more cell sites with each cell site having a source of cellular communication signals and an RF transmitter and antenna for broadcasting the cellular communication signals. A direct sequence spread spectrum wave... | 02/18/1997 |
| 5598472 | Charge-coupled-device based all-analog wave form scrambling with applications in audio, video, video-on-demand, and TV systems A scrambled analog signalling system having a source of analog signals to be sent to a receiving device is comprised of a multiple stage charge coupled device (66) having analog signal input terminals connected to receive analog signal samples from said s... | 01/28/1997 |
| 5589834 | Cost effective geosynchronous mobile satellite communication system A satellite communication system including one or more satellites in geosynchronous orbit and inclined at a predetermined angle greater than 0° relative to earth, a preferred angle being about 28.5° for full earth coverage, there is a constellation of s... | 12/31/1996 |
| 5577066 | Charge-coupled-device based data-in-voice modem A data-in-voice modem is disclosed using charge coupled devices. Unique features include: (1) Baseband-to-IF upconversion to enable CCD-based demod/processing; (2) All analog (no analog-to-digital A/D required); option for post-CCD A/D; (3) Additional on-... | 11/19/1996 |
| 5572216 | System for increasing the utility of satellite communication systems An existing TDRSS satellite communication system is incorporated, together with low-power ground-based remote transceivers of special design, and additional beam forming and steering elements at the ground terminals, to make possible digital communication... | 11/05/1996 |
| 5557641 | Charge-coupled-device based transmitters and receivers A radio transmitter having a source of first signals for radio transmission, includes a modulator for modulating the first signals on an intermediate carrier frequency second signal to produce a third signal. A charge coupled device (CCD) is connected to ... | 09/17/1996 |
| 5510801 | Location determination system and method using television broadcast signals A location determination system and method in which mobile receiver units are in an area of at least three fixed commercial television stations, each television station broadcasting standard television signals, including horizontal, vertical and chrominan... | 04/23/1996 |
| 5483549 | Receiver having for charge-coupled-device based receiver signal processing This invention relates to a novel receiver architecture, the Charge-Coupled-Device Integrated Receiver (IR), which simplifies electronic circuitry requirements and reduce baseband processing rates through efficient signal processing. The focus of this rec... | 01/09/1996 |
| 5459469 | Air traffic surveillance and communication system An air traffic surveillance and communication system for air traffic controllers, includes a plurality of ground based first radio transceivers located in specific geographic sectors, respectively, and having a first frequency channel for supporting party... | 10/17/1995 |
| 5422813 | No-outage GPS/commercial RF positioning system The present invention relates to a no outage GPS/AM position finding system wherein a GPS system having a plurality of satellites transmits time and location data over radio frequency signals to enable a mobile GPS receiver station on the ground to determ... | 06/06/1995 |
| 5365450 | Hybrid GPS/data line unit for rapid, precise, and robust position determination A global positioning system (GPS) in which a plurality earth orbiting satellites transmit position information to mobile radio stations on earth, is provided with a separate source satellite position data broadcast digital channels and one or more dial-up... | 11/15/1994 |
