Patents by Inventor Carlo M. Bruno

Carlo M. Bruno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Instrument for measuring the phase jitter of analog signals
    Patent number: 4819080
    Abstract: 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 clock signal with the same phase and frequency characteristics as the signal to be measured, so as a phase comparison with a reference signal can be made. Error signal obtained is filtered, measured and displayed.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: April 4, 1989
    Assignee: Sip - Societa Italiana per L'esercizio Delle Telecomunicazioni P.A.
    Inventors: Flavio Cucchietti, Carlo M. Bruno
  • Digital phase-locked loop circuits with storage of clock error signal
    Patent number: 4763342
    Abstract: The digital phase-locked loop circuit extracts the clock signal from a serial flow of coded data by operating so as to determine the phase of the received signal and comparing this phase with that of a locally-generated signal. The error signal obtained from the comparison is digitally filtered and used to correct the phase of local signal. The error with respect to the signal extracted from a prior data stream is stored and used to effect corrections even in the absence of the data flow at the input or in presence of long zero sequences.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: August 9, 1988
    Assignee: Cselt--Centro Studi e Laboratori Telecomunicazioni S.P.A.
    Inventors: Renato Ambrosio, Carlo M. Bruno
  • System for bidirectional digital transmission with echo cancellation
    Patent number: 4686703
    Abstract: A bidirectional transmission system with echo cancellation allows simultaneous interchange of digital information between an exchange and subscribers on a single transmission line. Data flows are transmitted by packets separated by short silence intervals within which clock signals are extracted and echo-cancellation adjustment is accomplished. Use of an adaptive equalizer and a single sampling operation per sampling period are possible.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: August 11, 1987
    Assignee: Cselt-Centro Stude e Laboratori Telecomunicazioni S.p.A.
    Inventors: Carlo M. Bruno, Gianfranco Panarotto, Adler Tofanelli
  • Digital circuit for extracting synchronism signals from a serial flow of coded data
    Patent number: 4675885
    Abstract: The digital circuit extracts synchronism signals from a serial flow of coded data according to a process which uses a phaselocked loop where the different level transitions of the signal received are separately considered and a phase is determined for each type, the latter being compared with a specific reference phase, established in the initialization step. The error signal obtained from the comparison is used for correcting synchronism signal frequency.
    Type: Grant
    Filed: June 12, 1985
    Date of Patent: June 23, 1987
    Assignee: Sip Societa' Italiana Per L'Esercizio Telefonico P.A.
    Inventors: Fabrizio Gagliardi, Carlo M. Bruno, Adler Tofanelli