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    METHOD AND APPARATUS FOR DEMODULATING COLOR TELEVISION CHROMINANCE SIGNALS
    3.
    发明申请
    METHOD AND APPARATUS FOR DEMODULATING COLOR TELEVISION CHROMINANCE SIGNALS 审中-公开
    用于解调彩色电视色彩信号的方法和装置

    公开(公告)号：WO1988010053A1

    公开(公告)日：1988-12-15

    申请号：PCT/NL1988000027

    申请日：1988-06-02

    Applicant: N.V. PHILIPS' GLOEILAMPENFABRIEKEN

    Inventor： N.V. PHILIPS' GLOEILAMPENFABRIEKEN ,  BASILE, Carlo ,  CAVALLERANO, Alan, P. ,  TSINBERG, Mikhail

    IPC: H04N11/14

    CPC classification number: H04N11/14 ,  H04N11/004

    Abstract: An improved color subcarrier and amplitude reference signal and means for its utilization are provided for color television systems, particularly high definition, wide aspect ratio television systems wherein the high definition signal is decomposed into two signals for transmission via two separate channels and recombined at the receiver to reproduce the original high definition image.

    Abstract translation: 为彩色电视系统，特别是高分辨率宽宽比电视系统提供了改进的彩色副载波和幅度参考信号及其使用装置，其中高清晰度信号被分解成两个信号，用于经由两个分离的信道传输并在接收机处重新组合 再现原来的高分辨率图像。

    COLOR DECODING
    4.
    发明申请
    COLOR DECODING 审中-公开
    颜色解码

    公开(公告)号：WO98046027A1

    公开(公告)日：1998-10-15

    申请号：PCT/IB1998/000294

    申请日：1998-03-05

    IPC: H04N9/44 ,  H04N9/45 ,  H04N9/64 ,  H04N9/66 ,  H04N11/14 ,  H04N11/16

    CPC classification number: H04N9/66 ,  H04N9/45 ,  H04N11/14 ,  H04N11/16

    Abstract: In a method of demodulating an analog chrominance signal (C), digital quadrature signals are generated (DPA, SIN ROM, COS ROM) for demodulating (MUL DAC U, MUL DAC V) the analog chrominance signal (C) to obtain analog demodulated color difference signals (U, V). A digital phase error signal is furnished ( SIGMA DELTA mod) from at least one (V) of the analog demodulated color difference signals (U, V). The digital phase error signal is digitally filtered (DLF) to obtain a phase control signal (K) for the digital quadrature signals generation (DPA, SIN ROM, COS ROM).

    Abstract translation: 在解调模拟色度信号（C）的方法中，产生用于解调（MUL DAC U，MUL DAC V）模拟色度信号（C）的数字正交信号（DPA，SIN ROM，COS ROM），以获得模拟解调颜色 差信号（U，V）。 从模拟解调色差信号（U，V）中的至少一个（V）提供数字相位误差信号（SIGMA DELTA mod）。 数字相位误差信号被数字滤波（DLF），以获得用于数字正交信号产生的相位控制信号（K）（DPA，SIN ROM，COS ROM）。

    VSB HDTV TRANSMISSION SYSTEM WITH REDUCED NTSC CO-CHANNEL INTERFERENCE
    5.
    发明申请
    VSB HDTV TRANSMISSION SYSTEM WITH REDUCED NTSC CO-CHANNEL INTERFERENCE 审中-公开
    VSB HDTV传输系统具有降低的NTSC协同通道干扰

    公开(公告)号：WO1992009174A1

    公开(公告)日：1992-05-29

    申请号：PCT/US1991008277

    申请日：1991-11-07

    Applicant: ZENITH ELECTRONICS CORPORATION

    Inventor： ZENITH ELECTRONICS CORPORATION ,  CITTA, Richard, W. ,  MUTZABAUGH, Dennis, M. ,  SGRIGNOLI, Gary, J.

    IPC: H04N11/14

    CPC classification number: H04N7/0803 ,  H04N5/21 ,  H04N5/4401 ,  H04N5/455 ,  H04N11/002 ,  H04N11/006

    Abstract: A television signal transmission signal comprises a suppressed carrier, VSB signal having respective Nyquist slopes at the lower and upper edges of a 6MHz television channel, the center frequency of the Nyquist slope at the lower edge of the channel being substantially coincident whith the frequency of the suppressed carrier, and the pilot signal in quadrature relation with the suppressed carrier. The suppressed carrier is modulated by an N-level digitally encoded signal having a sample rate fs substancially equalto three times the NTSC color subcarrier frequency, with the frequency of the color subcarrier being less than the co-channel NTSC picture carrier by an amount equal to about fs/12. The received signal is demodulated by a synchronous detector in response to the received pilot signal and interfering NTSC beat components are attenuated by a linear filter having notches at fs/12, 5fs/12 and fs/2. The output of the filter comprises an M-level signal, where M = greater than N, which is converted to a N-level output signal representing the televised image.

    TRANSMITTING AUXILIARY INFORMATION IN A TELEVISION SIGNAL
    7.
    发明申请
    TRANSMITTING AUXILIARY INFORMATION IN A TELEVISION SIGNAL 审中-公开
    在电视信号中发送辅助信息

    公开(公告)号：WO9102431A3

    公开(公告)日：1991-04-18

    申请号：PCT/US9004078

    申请日：1990-07-19

    Applicant: GEN ELECTRIC

    Inventor： JONNALAGADDA KRISHNAMURTHY ,  GIBSON JAMES JOHN ,  WAGNER THEODOR MATTHIAS

    IPC: H04N7/015 ,  H04N11/14 ,  H04N11/24 ,  H04N11/00

    CPC classification number: H04N11/006

    Abstract: Apparatus for augmenting a television signal with auxiliary signal includes circuitry for modulating a picture carrier with baseband video signal to generate a vestigial sideband television signal. Auxiliary signal (54) is modulated on a further carrier (CA) of such frequency that the upper sidebands fp - (2n+1)fH/2 of the modulated further carrier, representing the auxiliary information, 1) occupy the frequency spectrum of the vestigial sideband of the vestigial sideband television signal (50) and 2) occur clustered at odd multiples of half line frequency. The sidebands of the modulated further carrier are added (52) to the vestigial sideband television signal in frequency interleaved fashion in the vestigial sideband spectral region.

    Abstract translation: 用辅助信号增强电视信号的装置包括用基带视频信号调制图像载波以产生残留边带电视信号的电路。 辅助信号（54）在另一载波（CA）上被调制，使得表示辅助信息的调制的另一载波的上边带fp-（2n + 1）fH / 2 1）占用该频率的频谱 残留边带电视信号（50）和2）的残留边带发生聚集在半行频率的奇数倍。 经调制的另一载波的边带在残留边带频谱区中以频率交织方式被添加（52）到残留边带电视信号。

    FREQUENCY SELECTIVE VIDEO SIGNAL INTRAFRAME PROCESSOR
    8.
    发明申请
    FREQUENCY SELECTIVE VIDEO SIGNAL INTRAFRAME PROCESSOR 审中-公开
    频率选择性视频信号处理器

    公开(公告)号：WO1990000338A1

    公开(公告)日：1990-01-11

    申请号：PCT/US1989001788

    申请日：1989-05-03

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： GENERAL ELECTRIC COMPANY ,  SMITH, Terrence, Raymond ,  HURST, Robert, Norman, Jr. ,  ISNARDI, Michael, Anthony

    IPC: H04N11/14

    CPC classification number: H04N11/008

    Abstract: A widescreen television signal containing center panel information and time compressed side panel information in an overscan region is intraframe processed above a given frequency only with respect to the center panel information. The intraframe processing apparatus (38) includes a signal delay network (1120, 1122) with first and second 262H delay elements coupled between an input and an output of the delay network. During a first field interval, signals from the delay input and from an intermediate point between the delay elements are subtractively combined (1125, 1128) to produce a difference term which is coupled to a signal path. During a second field interval, signals from the delay output and from the intermediate point are subtractively combined to produce a difference term which is coupled to the signal path. An intraframe processed output signal is produced by combining (1134) the difference terms from the signal path with a signal from the intermediate delay point. A filter (1130) and an electronic gate (1132) in the signal path determine frequency selective intraframe processing on the center panel information alone.

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