中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

52 records (took 0.022 seconds)

    32.
    发明专利
    未知

    公开(公告)号：DE3622204A1

    公开(公告)日：1987-01-08

    申请号：DE3622204

    申请日：1986-07-02

    Applicant: RCA CORP

    Inventor： LU CHUNG HSIN ,  ACAMPORA ALFONSE

    IPC: H04N5/21 ,  H04N9/64 ,  H04N5/14 ,  H04N5/213

    Abstract: In field/frame recursive filters for providing noise reduction to composite video signal, inversion of the chrominance component of the composite video signal is obviated by selecting nearest neighbor in-phase field/frame delayed signals for recursion. The system arbitrates between two or more nearest neighbor in-phase signals or combinations thereof and feeds back the signal having an amplitude most closely matching the incoming composite video signal.

    37.
    发明专利
    未知

    公开(公告)号：IT8224106D0

    公开(公告)日：1982-11-05

    申请号：IT2410682

    申请日：1982-11-05

    Applicant: RCA CORP

    Inventor： ACAMPORA ALFONSE

    IPC: H04N9/77 ,  H03H17/06 ,  H03H21/00 ,  H04N9/64 ,  H04N9/78 ,  H04N

    Abstract: A digital finite impulse response (FIR) filter is provided in which a plurality of weighted signal taps are symmetrically located in time about a weighted center tap. Weighted signals from the symmetrically located taps are summed at a first point in the filter, which sum is then combined with signals from the center tap in one sense, that is, either additively or subtractively, to produce signals at a first output. The summed signals at the first point are also combined with signals from the center tap in an opposite sense to produce signals at a second output. The two outputs will exhibit bandpass and lowpass filter response characteristics, with the outputs at which the respective responses are produced being determined by the respective senses of signal combination. The FIR filter may be of either the input tap-weighted or output tap-weighted variety.

    38.
    发明专利
    未知

    公开(公告)号：FR2584553B1

    公开(公告)日：1992-01-10

    申请号：FR8609626

    申请日：1986-07-02

    Applicant: RCA CORP

    Inventor： LU CHUNG HSIN ,  ACAMPORA ALFONSE

    IPC: H04N5/21 ,  H04N9/64 ,  H04N5/217 ,  H04N9/77

    Abstract: In field/frame recursive filters for providing noise reduction to composite video signal, inversion of the chrominance component of the composite video signal is obviated by selecting nearest neighbor in-phase field/frame delayed signals for recursion. The system arbitrates between two or more nearest neighbor in-phase signals or combinations thereof and feeds back the signal having an amplitude most closely matching the incoming composite video signal.

    39.
    发明专利
    未知

    公开(公告)号：IT1205273B

    公开(公告)日：1989-03-15

    申请号：IT2410682

    申请日：1982-11-05

    Applicant: RCA CORP

    Inventor： ACAMPORA ALFONSE

    IPC: H04N9/77 ,  H03H17/06 ,  H03H21/00 ,  H04N9/64 ,  H04N9/78 ,  H04N

    Abstract: A digital finite impulse response (FIR) filter is provided in which a plurality of weighted signal taps are symmetrically located in time about a weighted center tap. Weighted signals from the symmetrically located taps are summed at a first point in the filter, which sum is then combined with signals from the center tap in one sense, that is, either additively or subtractively, to produce signals at a first output. The summed signals at the first point are also combined with signals from the center tap in an opposite sense to produce signals at a second output. The two outputs will exhibit bandpass and lowpass filter response characteristics, with the outputs at which the respective responses are produced being determined by the respective senses of signal combination. The FIR filter may be of either the input tap-weighted or output tap-weighted variety.

Patent Agency Ranking