Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 6292115 | Data compression for use with a communications channel A method, and apparatus for accomplishing the method, of compressing data for transmission over a communications channel involves receiving one or more data symbols comprising a current data string and at least one subsequent symbol; matching a longest pr... | 09/18/2001 |
| 6131160 | Method and apparatus for an adapter card providing conditional access in a communication system A method and apparatus for an adapter card, for use in a computer, to provide conditional access by the computer to incoming data streams while maintaining the security of information by maintaining a listing of addresses corresponding to data streams whi... | 10/10/2000 |
| 6047023 | Swept frequency modulation and demodulation technique A swept frequency communication system includes a modulator that multiplies a frequency sweep signal with one or more underlying modulated communication signals to produce a swept frequency signal having a number of headerless tracks located directly adja... | 04/04/2000 |
| 6043781 | Low insertion loss connection of an antenna to a mobile radio with retractable swiveling antenna feature An approach for connection of an antenna employs an antenna including at least one antenna contact; a swivel collar slidably coupleable with the antenna and including at least one collar contact; and an antenna coupler/connector insertable into the swivel... | 03/28/2000 |
| 6035199 | Method and apparatus for performing a handoff in a wireless communication system The present invention relates to an apparatus and method for performing a handoff in wireless communication system. The method includes the steps of establishing communication between a mobile subscriber and a serving cell, determining whether a target ce... | 03/07/2000 |
| 6028901 | Receiver selection based on delay spread estimation A device and method of selecting and deselecting an equalizer in a digital communications receiver. The method includes receiving a receiver signal, estimating an estimated delay spread in the receiver signal, and determining a threshold delay spread. In ... | 02/22/2000 |
| 5896421 | Use of low pass filter and equalizer for noise reduction in direct up-conversion schemes A transmitter in a base transceiver station in a wireless telephony network uses a direct up-conversion scheme to convert an input signal with in-phase and quadrature phase (I, Q) components to a radio frequency within a transmit band. A low-pass filter f... | 04/20/1999 |
| 5818296 | FSK demodulator using goertzel's discrete fourier transform A frequency shift keyed demodulator system employs a first bandpass filter having a passband centered at a first frequency; a second bandpass filter having a passband centered at a second frequency; a first Goertzel's discrete Fourier transform processor ... | 10/06/1998 |
| 5812951 | Wireless personal communication system The present invention relates to a wireless personal communications system (WPCS) having several features embodied in several forms. In one embodiment, the, WPCS includes at least one RP, a first SU in communication with the RP, and a second SU in communi... | 09/22/1998 |
