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| Number | Title | Issue Date |
| 6330294 | Method of and apparatus for digital radio signal reception A receiver is described, for instance for GSM systems, wherein a plurality of digital signals each comprising a training sequence (xp (t)) usable to generate an estimation of the transmission channel are received in diversity (A.1 . . . A.N) in... | 12/11/2001 |
| 4639861 | Interface controlling bidirectional data transfer between a synchronous and an asynchronous bus An interface facilitating data transmission between a control processor, connected to an asynchronous two-way bus, and a plurality of terminals, connected to a common synchronous two-way bus, comprises a microprocessor responsive to periodically recurring... | 01/27/1987 |
| 4636032 | Optical fibre connector The connector ensures the alignment between the two fibres ends (9, 10) thanks to the force exerted by a locally generated magnetic field (5, 6, 7, 8) on a ferromagnetic fluid placed between the side fibre surface and a small tube (1) with a diameter grea... | 01/13/1987 |
| 4581638 | Method of and system for coding a two-dimensional data array A two-dimensional data array, such as an orthogonally scanned television image, is divided into a multiplicity of elemental blocks each containing a given number of PCM samples which are converted by linear transformation into a series of coefficients to ... | 04/08/1986 |
| 4573074 | Coding and decoding method and system for variable-length sequences of digital data Television signals generated at a transmitting station are digitized and are then transformed into bit groups by a precoder reducing their information content by eliminating redundancies, as by comparing each pixel of a given frame with the homologous pix... | 02/25/1986 |
| 4571732 | Adaptive equalizer for binary signals and method of operating same An adaptive equalizer for high-speed binary signals, operating in baseband, comprises a transversal filter receiving digitized samples of incoming symbols and feeding them to a decision stage. The samples also go to a coefficient computer, in parallel wit... | 02/18/1986 |
| 4387271 | Combined telephone and data-transfer system Telephone lines extending between a central office and associated subscriber stations are provided at opposite ends with mutually complementary modems and with couplers by which code signals from subscriber-operated address selectors can be sent to a comm... | 06/07/1983 |
| 4376306 | Frame-synchronizing method and system for recovering supplemental information from supermodulated stream of multilevel symbols A stream of digital symbols with three or more distinct amplitude levels, organized in a recurrent frame of N symbol periods, carries supplemental information in the form of a binary word of k bits per frame, with k substantially less than the probable mi... | 03/08/1983 |
| 4347608 | Self-checking system for electronic processing equipment A central processor controlling a set of peripheral units through an associated logic network is programmed to activate from time to time, through a direct connection by-passing the logic network, a checking unit including a read-only memory storing a var... | 08/31/1982 |
| 4321611 | Avalanche photodetector for fiber-optical system and method of making same A detector for luminous radiation transmitted by an optical fiber comprises an avalanche photodiode whose light-receiving surface, separated by a high-resistivity portion of a semiconductor body from a reverse-biased p/n junction, is serrated with major s... | 03/23/1982 |
| 4289143 | Method of and apparatus for audiometrically determining the acoustic impedance of a human ear In order to determine the acoustic impedance of a human ear at various static pressures, a probe tightly fitted to the pinna of the ear transmits a short acoustic pulse with a wide frequency spectrum (such as white noise) from an electroacoustic transduce... | 09/15/1981 |
| 4280086 | Method of and circuit arrangement for discharging a storage capacitor A storage capacitor of a sample-and-hold circuit, e.g. as used in a converter for the digitization of signal amplitudes in a PCM telephone system, is provided with a zero-setting gate comprising two parallel branches that include a first and a second tran... | 07/21/1981 |
| 4178066 | Ray-path equalizer for signal-transmission system using multimode light guides Signals, especially short pulses, are transmitted by way of a series of aligned light guides with internally reflecting boundaries (i.e. fibers or foils), with interposition of two identical transparent elements each refracting incident rays from the prox... | 12/11/1979 |
