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A programmable keying system (51) for electrical connectors includes keys (56) which are supported within key-receiving passageways (61) in a connector (10) to cooperate with opposing keys in a complementary connector to ensure that the connector (10) will mate only with a connector with ...
Demodulating an optical Differential Phase-Shift Keying (DPSK) signal is accomplished using a self-homodyne receiver for receiving the optical signal. A converter converts the optical signal received by the self-homodyne receiver into a representative electrical signal. A processor that processes the ...
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A photovoltaic panel having at least one distinctive feature and electrodes of positive and negative electrical polarity further comprises at least one keying feature located on the panel in a location spaced from the electrodes. The keying feature is disposed in a predetermined relationship with ...
A method of inter-area rekeying of encryption keys in secure mobile multicast communications, in which a Domain Group Controller Key Server (Domain GCKS) distributes Traffic Encryption Keys (TEK) to a plurality of local Group Controller Key Servers (local GCKS), and said local Group Controller...
A locking system (9) for connector assemblies (1, 8) comprises individual keying elements (30, 31, 32, 33) of one of the connector assemblies (8) directly opposed individual keying elements (10 , 11, 12, 13) of the connector assembly (1), the locking system of removing one or the ...
In accordance with the invention, Quadrature Minimum-Shift Keyed (QMSK), M-are Quadrature Minimum-Shifted Keyed (M-QMSK), and constant-envelope QMSK (CE) signaling methods are provided for carrier-based transmission. In additional accordance with the invention, a baseband QMSK (BB) signaling ...
A method of inter-area rekeying of encryption keys in secure mobile muiticast communications, in which a Domain Group Controller Key Server (Domain GCKS) distributes Traffic Encryption Keys (TEK) to a plurality of local Group Controller Key Servers (local GCKS), and said local Group ...
A system for direct modulation is disclosed. Embodiments of the direct modulator for shift-keying modulation include impressing baseband data on a radio frequency (RF) signal at an oscillator by controlling a digital divider using a sigma-delta modulator.Chang-Hyeon LeeHoon LeeAkbar Ali...