公开(公告)号：EP2791897A1

公开(公告)日：2014-10-22

申请号：EP11876950.4

申请日：2011-12-09

Applicant: Intel Corporation

Inventor： SESHADRINATHAN, Kalpana ,  CAVIEDES, Jorge E.

IPC: G06T5/00 ,  G06T1/00

CPC classification number: H04N5/911 ,  H04N5/00 ,  H04N19/117 ,  H04N19/14 ,  H04N19/154 ,  H04N19/172 ,  H04N19/85 ,  H04N19/86

Abstract: Systems and methods may provide for conducting a real-time perceptual quality analysis of a video, wherein the perceptual quality analysis includes at least one of a noise measurement, a contrast measurement and a sharpness measurement. One or more strength parameters of one or more post-processing modules in a video processing pipe may be set based on the perceptual quality analysis resulting in overall video processing that adapts to the changing perceptual quality of the input. In one example, the strength parameters include at least one of a contrast parameter and a de-noising parameter. The invention results in visually enhanced video at the output of the post-processing module.

公开(公告)号：EP1991005A2

公开(公告)日：2008-11-12

申请号：EP08251390.4

申请日：2008-04-10

Applicant: Sony Corporation

Inventor： Kimura, Seiji ,  Ogata, Masami

IPC: H04N7/26

CPC classification number: H04N19/85 ,  H04N5/21 ,  H04N5/911

Abstract: A video signal processing method includes the steps of processing an input video signal and outputting an output video signal, detecting a temporal feature from the input video signal, smoothing the temporal feature by filtering and outputting the smoothed temporal feature, and controlling processing performed in the processing step in accordance with the temporal feature smoothed in the smoothing step. In this method, the smoothing step switches a characteristic of the filtering in accordance with the attribute of the input video signal.

Abstract translation: 一种视频信号处理方法包括：输入视频信号和输出的处理的开始的输出视频信号，从输入视频信号中检测时间特征，通过滤波和输出婷平滑时间特征的平滑时间特征，以及控制处理来执行在该步骤 在雅舞蹈的加工步骤在平滑步骤平滑的时间特征。 在该方法中，在平滑步骤开关在雅舞蹈过滤与所述输入视频信号的属性的特征。

公开(公告)号：EP0440242B1

公开(公告)日：1996-09-25

申请号：EP91101311.8

申请日：1991-01-31

Applicant: SANYO ELECTRIC CO., LTD.

Inventor： Iizuka, Hiroshi ,  Shirai, Mituzou

IPC: H04N5/92

CPC classification number: H04N5/911 ,  H04N5/923

公开(公告)号：EP0399758B1

公开(公告)日：1996-07-17

申请号：EP90305485.6

申请日：1990-05-21

Applicant: SONY CORPORATION

Inventor： Sakamoto, Etsurou

IPC: H03D3/04 ,  H04N5/91

CPC classification number: H03D3/007 ,  H03D3/006 ,  H03D2200/0062 ,  H03D2200/008 ,  H04N5/911 ,  H04N5/93

公开(公告)号：EP0212674B1

公开(公告)日：1992-10-07

申请号：EP86111986.5

申请日：1986-08-29

Applicant: VICTOR COMPANY OF JAPAN, LIMITED

Inventor： Ichinoi, Yutaka

IPC: H04N5/94 ,  H04N5/91

CPC classification number: H04N5/911

公开(公告)号：EP0197767B1

公开(公告)日：1992-06-17

申请号：EP86302468.3

申请日：1986-04-03

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventor： Matsumoto, Tokikazu ,  Nakagawa, Yukio ,  Honjo, Masahiro

IPC: H04N5/91

CPC classification number: H04N9/646 ,  H04N5/911

公开(公告)号：EP0399758A3

公开(公告)日：1992-03-25

申请号：EP90305485.6

申请日：1990-05-21

Applicant: SONY CORPORATION

Inventor： Sakamoto, Etsurou

IPC: H03D3/04 ,  H04N5/91

CPC classification number: H03D3/007 ,  H03D3/006 ,  H03D2200/0062 ,  H03D2200/008 ,  H04N5/911 ,  H04N5/93

Abstract: An FM-demodulating apparatus for use in a video tape recorder or the like arranged such that an FM-modulated video signal is phase-shifted by utilising a Hilbert transform circuit thereby to reduce the occurrence of moire. Thus, a signal-to-noise (S/N) ratio of a demodulated signal can be improved. In one embodiment, the apparatus comprises a first demodulator circuit (13) receiving an FM-modulated input; a Hilbert transform circuit (15) receiving the FM-modulated signal for phase-shifting it by 90 degrees; a second demodulator circuit (16) coupled to said Hilbert transform circuit (15); and mixing means (17) coupled to said first demodulator circuit (13) and said second demodulator circuit (16) for deriving FM-demodulated video signals. In a second embodiment, the apparatus comprises a Hilbert transform circuit (62, 63, 65) receiving the FM-modulated signal for phase-shifting it by 90 degrees, said Hilbert transform circuit including delay circuits (62, 63) and a subtracting circuit (65); adding means (64) coupled to said delay circuits (62, 63) included in said Hilbert transform circuit; a first demodulator circuit (67) coupled to said adding means (64) for demodulating signals obtained from said adding means (64); a second demodulating circuit (69) coupled to said subtracting circuit (65) of the Hilbert transform circuit for demodulating signals obtained from said subtracting circuit (65); and a mixing circuit (70) coupled to said adding means and said subtracting circuit of said Hilbert transform circuit for deriving FM-demodulated video signals.

公开(公告)号：EP0310418A3

公开(公告)日：1991-09-18

申请号：EP88309104.3

申请日：1988-09-30

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventor： Aki, Shinichi ,  Kobayashi, Masaaki ,  Muraji, Tsutomu 711-go, Kuriterion ,  Takeuchi, Akihiro

IPC: H04N5/91

CPC classification number: H04N5/92 ,  H04N5/911

Abstract: An apparatus which converts a video signal (1) to an FM signal and records the FM signal on a magnetic recording medium (12) has a filter (3) which eliminates an upper sideband component of the FM signal before recording thereby to enhance the increase of the levels of the lower sideband components of the repoduced FM signal.

Abstract translation: 将视频信号（1）转换为FM信号并将FM信号记录在磁记录介质（12）上的设备具有滤波器（3），其在记录之前消除FM信号的上边带分量，从而增强增加 的重构FM信号的下边带分量的电平。

公开(公告)号：EP0440242A2

公开(公告)日：1991-08-07

申请号：EP91101311.8

申请日：1991-01-31

Applicant: SANYO ELECTRIC CO., LTD.

Inventor： Iizuka, Hiroshi ,  Shirai, Mituzou

IPC: H04N5/92

CPC classification number: H04N5/911 ,  H04N5/923

Abstract: A reproduction system noise reduction circuit of a VTR is implemented in combination with a recursive type noise reduction circuit and a non-recursive type noise reduction circuit. The recursive type noise reduction circuit has a characteristic with complimentary relation to that of a recording system vertical emphasis circuit to function as a vertical de-emphasis circuit subjecting a reproduced luminance signal to vertical de-emphasis. The non-recursive type noise reduction circuit cancels noise components without line correlation from the reproduced luminance signal subjected to vertical de-emphasis. It is not necessary to increase noise reduction amount in each noise reduction circuit because vertical de-emphasis and noise reduction are carried out individually. Therefore, degradation of vertical resolution and increase in raining-like noise are prevented.

Abstract translation: VTR的再现系统噪声降低电路与递归型噪声降低电路和非递归型噪声降低电路一起实现。 递归型噪声降低电路具有与记录系统垂直加重电路相互关联的特性，用作将再现的亮度信号进行垂直去加重的垂直去加重电路。 非递归型噪声降低电路从经过垂直去加重的再现亮度信号中消除没有线相关的噪声分量。 由于分别进行垂直去加重和降噪，所以不需要增加每个降噪电路中的降噪量。 因此，防止垂直分辨率的降低和下降的噪声的增加。

公开(公告)号：EP0312266A3

公开(公告)日：1990-06-27

申请号：EP88309390.8

申请日：1988-10-07

Applicant: PIONEER ELECTRONIC CORPORATION

Inventor： Senso, Hitoshi c/o Pioneer

IPC: H04N5/91 ,  G11B20/06 ,  G11B5/012 ,  H04N5/781

CPC classification number: H04N5/911 ,  G11B20/06 ,  G11B20/22 ,  H04N9/802

Abstract: Apparatus for reproducing recorded information on a video disk (1), the recorded information including an FM signal containing video information, an EFM signal containing audio signals and cross modulation components of the FM and EFM signals within the bandwidth of the video signal. The apparatus includes cross modulation suppressing circuitry (4) consisting of an amplifier with a gain which decreases at frequencies equal to the frequency components of the cross modulation components falling within the frequency band of the FM video signal. In this way the cross modulation components are suppressed without suppressing the FM signal, thereby preventing the cross modulation components from interfering with the FM signal.