公开(公告)号：EP2383929A1

公开(公告)日：2011-11-02

申请号：EP11175311.7

申请日：2008-06-24

申请人： Hitachi Ltd.

发明人： Kurita, Toshiyuki ,  Owashi, Hitoaki

IPC分类号： H04L5/02 ,  H04N7/18

CPC分类号： H04L27/34 ,  H04N5/23222 ,  H04N7/17318 ,  H04N7/52 ,  H04N21/643

摘要： The present invention provides technology for improving the convenience of information transmission and connection in the case of transmitting information by connecting together a plurality of pieces of video equipment (100, 200, 300). To that end, the present invention is one that transmits a baseband video signal and/or a compressed video signal between a first piece of video equipment (100) and a second piece of video equipment (200) by means of a bidirectional interface 10 and is characterized by the fact that the aforementioned bidirectional interface (10) has transmission rates that are asymmetric in the uplink and the downlink, narrowband information is transmitted in the downlink in case broadband information is transmitted in the uplink, and narrowband information is transmitted in the uplink in case broadband information is transmitted in the downlink.

摘要翻译： 本发明提供了通过将多个视频设备（100,200,300）连接在一起来发送信息的情况下提高信息传输和连接的便利性的技术。 为此，本发明是通过双向接口10在第一视频设备（100）和第二视频设备（200）之间传送基带视频信号和/或压缩视频信号的本发明，以及 其特征在于，上述双向接口（10）具有在上行链路和下行链路中不对称的传输速率，在上行链路中发送宽带信息的情况下，在下行链路中发送窄带信息，并且在 在下行链路中传输宽带信息的情况下，上行链路。

公开(公告)号：EP2037618A3

公开(公告)日：2009-04-29

申请号：EP08252163.4

申请日：2008-06-24

申请人： Hitachi, Ltd.

发明人： Kurita, Toshiyuki ,  Owashi, Hitoaki

IPC分类号： H04L5/02 ,  H04N7/18

CPC分类号： H04L27/34 ,  H04N5/23222 ,  H04N7/17318 ,  H04N7/52 ,  H04N21/643

摘要： The present invention provides technology for improving the convenience of information transmission and connection in the case of transmitting information by connecting together a plurality of pieces of video equipment (100, 200, 300). To that end, the present invention is one that transmits a baseband video signal and/or a compressed video signal between a first piece of video equipment (100) and a second piece of video equipment (200) by means of a bidirectional interface 10 and is characterized by the fact that the aforementioned bidirectional interface (10) has transmission rates that are asymmetric in the uplink and the downlink, narrowband information is transmitted in the downlink in case broadband information is transmitted in the uplink, and narrowband information is transmitted in the uplink in case broadband information is transmitted in the downlink.

公开(公告)号：EP0909092A3

公开(公告)日：2000-06-07

申请号：EP98118653.9

申请日：1998-10-02

申请人： Hitachi, Ltd.

发明人： Hirano, Yasuhiro ,  Ishikura, Kazuo ,  Sugiyama, Masato ,  Nakajima, Mitsuo ,  Kurita, Toshiyuki ,  Matono, Takaaki ,  Takata, Haruki

IPC分类号： H04N7/01

CPC分类号： H04N5/46 ,  H04N5/147 ,  H04N7/012 ,  H04N7/014 ,  H04N19/40 ,  H04N19/51 ,  H04N19/587 ,  H04N21/440218

摘要： A method and apparatus for video signal format conversion are provided which can suppress picture quality deterioration by simple signal processing, and produce high-quality pictures with low cost. A motion compensation frame rate converter (2) detects a motion vector BV by using a block unit motion vector estimation block (5), and generates a pixel unit motion vector PV in mini-block units by using a pixel unit motion vector generator (6). A motion compensation interpolated frame generator (7) generates a compensation vector by using a motion compensation vector generator (10) on the basis of this PV, and generates motion compensation signals by using current and previous frame motion compensation signal generators (8) and (9). A motion compensation signal setter (11) produces a frame rate converted signal S4 by generating interpolated frame signals from the average value of both signals when the difference signal between the absolute values of both compensation signals is smaller than a threshold, or from a frame signal closer to an interpolation frame from the time point of view when it is larger than or equal to the threshold.

公开(公告)号：EP0883298A3

公开(公告)日：2000-03-29

申请号：EP98110021.7

申请日：1998-06-02

申请人： Hitachi, Ltd.

发明人： Hirano, Yasuhiro ,  Ishikura, Kazuo ,  Sugiyama, Masato ,  Nakajima, Mitsuo ,  Kurita, Toshiyuki ,  Takata, Haruki ,  Kimura, Shoji ,  Tsuru, Yasutaka ,  Kanehachi, Takashi ,  Matono, Takaaki

IPC分类号： H04N7/01

CPC分类号： H04N7/014 ,  H04N5/145 ,  H04N7/012 ,  H04N19/587

摘要： A system conversion apparatus and method for image signals are disclosed, in which an interlaced scanning image signal S1 is converted into a progressive scanning image signal S2 by an IP converter (1), a block-based motion vector is searched for based on the progressive scanning image signal S2 by a block-based motion vector search unit (5), a motion vector with minimum motion estimation error determined for each mini-block using the block-based motion vector is assigned as a pixel-based motion vector in a mini-block by a pixel-based motion vector generator (6), and an interpolated frame of the image signal is generated using the pixel-based motion vector and a progressive scanning image signal sequence S4 higher in frame frequency is output by a motion compensative interpolated frame generator (7).

公开(公告)号：EP0495431B1

公开(公告)日：1996-07-17

申请号：EP92100448.7

申请日：1992-01-13

申请人： HITACHI, LTD. ,  Hitachi Video & Information System, Inc.

发明人： Akiyama, Moriyoshi ,  Kurita, Toshiyuki ,  Sekiya, Hiroshi ,  Suzuki, Sunao, Purumieru Kugenuma C201 ,  Hishiyama, Katsumi ,  Murata, Toshinori

IPC分类号： H04N5/21

CPC分类号： H04N5/21 ,  H04N5/211

公开(公告)号：EP0169527B1

公开(公告)日：1991-10-09

申请号：EP85109133.0

申请日：1985-07-22

申请人： HITACHI, LTD.

发明人： Nakagaki, Nobufumi ,  Murata, Toshinori ,  Kurita, Toshiyuki

IPC分类号： H04N5/44

CPC分类号： H04N7/012

公开(公告)号：EP0169527A2

公开(公告)日：1986-01-29

申请号：EP85109133.0

申请日：1985-07-22

申请人： HITACHI, LTD.

发明人： Nakagaki, Nobufumi ,  Murata, Toshinori ,  Kurita, Toshiyuki

IPC分类号： H04N5/44

CPC分类号： H04N7/012

摘要： A signal converting circuit is disclosed for converting a television signal for 2:1 interlaced scanning system to another television signal for 1:1 non-interlaced scanning system using line memories (3, 4 5) for storing image data of two adjacent scanning lines of a present field and field memories (23, 24) for storing image data of a last occurring field. An interpolation signal (10) is produced by controlling a value of the televisions signal (16, 17) of the two adjacent scanning lines in response to the television signal (29) of the two adjacent scanning lines in the present field and the television signal of a scanning line positioned between the two adjacent scanning lines in the last occurring field.

公开(公告)号：EP0909092A2

公开(公告)日：1999-04-14

申请号：EP98118653.9

申请日：1998-10-02

申请人： Hitachi, Ltd.

发明人： Hirano, Yasuhiro ,  Ishikura, Kazuo ,  Sugiyama, Masato ,  Nakajima, Mitsuo ,  Kurita, Toshiyuki ,  Matono, Takaaki ,  Takata, Haruki

IPC分类号： H04N7/01

CPC分类号： H04N5/46 ,  H04N5/147 ,  H04N7/012 ,  H04N7/014 ,  H04N19/40 ,  H04N19/51 ,  H04N19/587 ,  H04N21/440218

摘要： A method and apparatus for video signal format conversion are provided which can suppress picture quality deterioration by simple signal processing, and produce high-quality pictures with low cost. A motion compensation frame rate converter (2) detects a motion vector BV by using a block unit motion vector estimation block (5), and generates a pixel unit motion vector PV in mini-block units by using a pixel unit motion vector generator (6). A motion compensation interpolated frame generator (7) generates a compensation vector by using a motion compensation vector generator (10) on the basis of this PV, and generates motion compensation signals by using current and previous frame motion compensation signal generators (8) and (9). A motion compensation signal setter (11) produces a frame rate converted signal S4 by generating interpolated frame signals from the average value of both signals when the difference signal between the absolute values of both compensation signals is smaller than a threshold, or from a frame signal closer to an interpolation frame from the time point of view when it is larger than or equal to the threshold.

摘要翻译： 提供了一种用于视频信号格式转换的方法和装置，其可以通过简单的信号处理来抑制图像质量劣化，并且以低成本生产高质量的图像。 运动补偿帧速率转换器（2）通过使用块单元运动矢量估计块（5）来检测运动矢量BV，并且通过使用像素单位运动矢量生成器（6）生成以小块为单位的像素单位运动矢量PV ）。 运动补偿内插帧发生器（7）通过使用基于该PV的运动补偿矢量发生器（10）产生补偿矢量，并且通过使用当前和前一帧运动补偿信号发生器（8）和（ 9）。 运动补偿信号设定器（11）通过在两个补偿信号的绝对值之间的差信号小于阈值时从两个信号的平均值产生内插帧信号，从帧信号 当其大于或等于阈值时，从时间点更接近插值帧。

公开(公告)号：EP0883298A2

公开(公告)日：1998-12-09

申请号：EP98110021.7

申请日：1998-06-02

申请人： Hitachi, Ltd.

发明人： Hirano, Yasuhiro ,  Ishikura, Kazuo ,  Sugiyama, Masato ,  Nakajima, Mitsuo ,  Kurita, Toshiyuki ,  Takata, Haruki ,  Kimura, Shoji ,  Tsuru, Yasutaka ,  Kanehachi, Takashi ,  Matono, Takaaki

IPC分类号： H04N7/01

CPC分类号： H04N7/014 ,  H04N5/145 ,  H04N7/012 ,  H04N19/587

摘要： A system conversion apparatus and method for image signals are disclosed, in which an interlaced scanning image signal S1 is converted into a progressive scanning image signal S2 by an IP converter (1), a block-based motion vector is searched for based on the progressive scanning image signal S2 by a block-based motion vector search unit (5), a motion vector with minimum motion estimation error determined for each mini-block using the block-based motion vector is assigned as a pixel-based motion vector in a mini-block by a pixel-based motion vector generator (6), and an interpolated frame of the image signal is generated using the pixel-based motion vector and a progressive scanning image signal sequence S4 higher in frame frequency is output by a motion compensative interpolated frame generator (7).

摘要翻译： 公开了一种用于图像信号的系统转换装置和方法，其中隔行扫描图像信号S1由IP转换器（1）转换成逐行扫描图像信号S2，基于基于块的运动矢量，基于逐行扫描图像信号 通过基于块的运动矢量搜索单元（5）扫描图像信号S2，使用基于块的运动矢量为每个小块确定最小运动估计误差的运动矢量被分配为基于像素的运动矢量 通过基于像素的运动矢量生成器（6）进行块化，并且使用基于像素的运动矢量生成图像信号的内插帧，并且通过运动补偿插值输出帧频较高的逐行扫描图像信号序列S4 帧发生器（7）。

公开(公告)号：EP0495431A1

公开(公告)日：1992-07-22

申请号：EP92100448.7

申请日：1992-01-13

申请人： HITACHI, LTD. ,  Hitachi Video & Information System, Inc.

发明人： Akiyama, Moriyoshi ,  Kurita, Toshiyuki ,  Sekiya, Hiroshi ,  Suzuki, Sunao, Purumieru Kugenuma C201 ,  Hishiyama, Katsumi ,  Murata, Toshinori

IPC分类号： H04N5/21

CPC分类号： H04N5/21 ,  H04N5/211

摘要： An image control apparatus in a television receiver, wherein after determining the frequency characteristic of an inputted video signal, when a high frequency band of the frequency characteristic has been raised above a predetermined level, the image quality is enhanced after performing waveform equalization on the video signal to cancel an impression of a dim image, given to the visual sense, and on the other hand, when the high frequency band of the inputted video signal has been lowered, noise reduction is performed after waveform equalization to further degrade the image quality for preventing deterioration of the S/N ratio, thereby usually providing appropriate images. The image control apparatus includes a waveform equalizer (101), a distorted waveform extraction control unit (102), a noise reduction circuit (103), and an image quality control unit (104). The waveform equalizer (101) receives an inputted video signal, equalizes waveform of the video signal, and outputs the waveform equalized video signal. The distorted waveform extraction control unit (102) detects distorted waveform from the output of the waveform equalizer and controls the waveform equalizer to perform waveform equalization suitable for the inputted video signal. It also controls the noise reduction circuit (103) and the image quality control unit (104) in accordance with changes in the frequency characteristic of the video signal before and after waveform equalization to intensify the noise reduction for degrading the image quality, when the high frequency band of the frequency characteristic of the input signal has been lowered, and, contrarily, to debilitate or stop the noise reduction for enhancing the image quality, when the high frequency band has been raised.

摘要翻译： 一种电视接收机中的图像控制装置，其中，在确定了输入的视频信号的频率特性之后，当频率特性的高频带已经升高到高于预定电平时，在对视频进行波形均衡之后增强了图像质量 信号以取消给予视觉的暗淡图像的印象，另一方面，当输入的视频信号的高频带已经降低时，在波形均衡之后执行降噪以进一步降低图像质量，以便 防止S / N比的劣化，从而通常提供适当的图像。 图像控制装置包括波形均衡器（101），失真波形提取控制单元（102），噪声降低电路（103）和图像质量控制单元（104）。 波形均衡器（101）接收输入的视频信号，使视频信号的波形相等，并输出波形均衡视频信号。 失真波形提取控制单元（102）从波形均衡器的输出端检测失真的波形，并且控制波形均衡器执行适合于输入的视频信号的波形均衡。 它还根据波形均衡之前和之后的视频信号的频率特性的变化来控制降噪电路（103）和图像质量控制单元（104），以加强降低图像质量的降噪，当高 输入信号的频率特性的频带已经降低，并且相反地，当高频带已经被提高时，为了提高图像质量而使噪声降低衰减或停止。