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Portable telephone system with telephone answering device
The present invention has telephone number data recording means used whenever a subscriber is away with his or her portable telephone, wherein if a call is received at ...
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Method and apparatus for detecting spread spectrum signals using a signal from a secondary source
OF THE DRAWINGS The method and apparatus of the present invention enables efficient detection and acquisition of spread spectrum signals, including spread spectrum ...
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Method and system for mobile station positioning in cellular communication networks
OF THE INVENTION In IS-95 CDMA cellular network, each base station BS is synchronized to CDMA system time, which is derived from a precise time reference supplied by GPS...
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Optical semiconductor transceiver with chemically resistant layers
The structures described, however, are difficult to fabricate and the present invention concerns a structure which makes it possible to resolve these difficulties. The ...
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Passively aligned bi-directional optoelectronic transceiver module assembly
The foregoing, and additional, objects of this invention are attained by providing an assembly for terminating an optical fiber which transmits information bi-...
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Method of and apparatus for assessing coins
What we claim is: 1. A coin discriminating apparatus comprising first and second coil sets each comprising a transmit and receive coil, each set arranged to be subject ...
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Spatial light modulator
What is claimed is: 1. An electro-optical system which includes a spatial light modulator comprising a substrate; a multi-phase charge-coupled device formed in a layer ...
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Semiconductor device with optical waveguides to achieve signal transmission using optical means
This invention has been carried out in light of various problems accompanying the higher integration of LSI's, as described above, and provides a semiconductor device ...
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Method for designing an electronic integrated circuit with optical inputs and outputs
The inventive method allows optical I/Os to be used in integrated circuits that contain a wide variety of different and highly-complex circuit cells, even when those ...
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System comprising acousto-optic tunable filter
The invention provides a system containing a tunable add/drop filter offering desirable properties in several respects. Specifically, as reflected in FIG. 3, the filter ...
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Ring Tones 
