1
Andrea Finotello, Maurizio Paolini: Decoder for audio signals of compressed and coded audiovisual streams. SIP Societa Italiana per l Esercizio Delle Telecomunicazioni P A, Herbert Dubno, August 26, 1997: US05661728 (51 worldwide citation)

A decoder for audio signals belonging to audio-visual streams coded in accordance with standard ISO/IEC 11172 is provided. The decoder has a presentation unit (UP) which is controlled by a first and a second clock signal, depending on the desired sampling rate, and is associated to device for (SAV) ...


2
Rosario Drogo de Iacovo, Roberto Montagna, Daniele Sereno: System for embedded coding of speech signals. SIP Societa Italiana per l Esercizio delle Telecomunicazioni P A, Herbert Dubno, October 4, 1994: US05353373 (44 worldwide citation)

The set of possible excitation signals is subdivided into a plurality of subsets, the first of which provides the contribution to the coded signal necessary to set up a transmission at a minimum rate guaranteed by the network, while the others supply a contribution which, when added to that of the f ...


3
Luca Cellario: Method and device for speech signal pitch period estimation and classification in digital speech coders. SIP Societa Italiana per l Esercizio Delle Telecomunicazioni P A, Herbert Dubno, August 20, 1996: US05548680 (33 worldwide citation)

A method and a device for speech signal digital coding are provided where at each frame there is carried out a long-term analysis for estimating pitch period d and a long- term prediction coefficient b and gain G, and an a-priori classification of the signal as active/inactive and, for active signal ...


4
Giovanni Baronetti, Stefano Dal Lago, Marco Gandini, Pierangelo Garino, Giovanni Ghigo: Device for transmitting, receiving and decoding compressed audiovisual streams. SIP Societa Italiana per l Esercizio delle Telecomunicazioni p a, Herbert Dubno, November 4, 1997: US05684804 (33 worldwide citation)

A device for transmitting and decoding audio-visual streams arranged in accordance with standard ISO/IEC 11172 is provided. The device (DEC) comprises: interfaces (CSC, IA, CIS) for connection to a local storage device (MEL) or to a telecommunications network (2, 3), for receiving streams from remot ...


5
Livio Cognolato, Angelantonio Gnazzo: Method of fabricating optical fibres by solution-doping. SIP Societa Italiana per L Esercizio Delle Telecomunicazioni P A, Herbert Dubno, September 10, 1991: US05047076 (15 worldwide citation)

Silica intended to form the core of an optical-fibre preform is deposited as an unvitrified soot inside a reaction tube, where a non-aqueous solution of dopant precursor(s) is then introduced without removing the tube from the lathe. The precursor(s) of the dopant(s) are dissolved in an anhydrous or ...


6
Rosario Drogo de Iacovo, Roberto Montagna, Daniele Sereno: Method of and device for coding speech signals with analysis-by-synthesis techniques. SIP Societa Italiana per l Esercizio delle Telecomunicazioni p A, Herbert Dubno, November 21, 1995: US05469527 (10 worldwide citation)

The set of possible excitation signals is subdivided into a plurality of subsets, the first of which provides the contribution to the coded signal necessary to set up a transmission at a minimum rate guaranteed by the network, while the others supply a contribution which, when added to that of the f ...


7
Flavio Cucchietti, Carlo M Bruno: Instrument for measuring the phase jitter of analog signals. Sip Societa Italiana per L esercizio Delle Telecomunicazioni P A, Herbert Dubno, April 4, 1989: US04819080 (8 worldwide citation)

The instrument measures directly the phase jitter of analog signals emitted n the line by the device under test, even when clock information is not available and when particular specifications and limitations do not allow the use of analog instruments. It uses a circuit which generates a square-wave ...


8
Luca Cellario, Daniele Sereno: Method of and device for quantizing excitation gains in speech coders based on analysis-synthesis techniques. SIP Societa Italiana per l Esercizio delle Telecomunicazioni p a, Herbert Dubno, May 21, 1996: US05519807 (6 worldwide citation)

An optimum excitation signal for each subframe is determined in a speech coder based on analysis-by-synthesis techniques and operating on frames of samples divided into a number of subframes. The excitation signal includes a shape contribution (innovation) and an amplitude contribution (gain) which ...


9
Marco Gandini, Giovanni Ghigo, Mauro Marchisio: Multimedia protocol interface for 64 kbit/s data flow. Sip Societa Italiana per l Esercizio Delle Telecomunicazioni P A, Herbert Dubno, March 23, 1993: US05197083 (6 worldwide citation)

A multimedia protocol interface for 64K Kbit/s data flow, organized accorg to the frame structure specified in CCITT Recommendation H221 and transmitted and received according to the standard 64 kbit/s protocol or 256 kbit/s 10 M protocol, adapted to operate autonomously or aided by an external micr ...


10
Renato Ambrosio, Carlo Bruno, Giorgio Paschetta, Adler Tofanelli: Echo canceller for bidirectional digital transmission. SIP Societa Italiana per l Esercizio delle Telecomunicazioni P A, Herbert Dubno, July 5, 1988: US04755984 (4 worldwide citation)

The echo canceller for bidirectional digital transmission systems cancels the echo queues of a desired number N of digital symbols, transmitted on the line in the last N signalling periods. It consists of a part which effects very simply the summation of the last N transmitted symbols, so as to ease ...