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：EP1931145A1

公开(公告)日：2008-06-11

申请号：EP07254685.6

申请日：2007-12-03

申请人： Hitachi, Ltd.

发明人： Hamada, Koichi ,  Mizuhashi, Yoshiaki ,  Nakajima, Mitsuo ,  Ogino, Masahiro

IPC分类号： H04N7/01 ,  H04N7/46 ,  H04N7/26

CPC分类号： H04N19/521 ,  H04N5/145 ,  H04N7/0127 ,  H04N7/014 ,  H04N19/577 ,  H04N19/587

摘要： Provided is a frame rate conversion apparatus (100) for inputting a video signal and inserting an interpolation frame into the video signal so as to convert a frame rate of the video signal. The apparatus (100) includes: an input unit (1) for inputting the video signal; a video interpolation unit (2) for generating an interpolation frame and performing an interpolation process of the video signal; and a control unit (7) for controlling the generation process of the interpolation frame by the video interpolation unit (2). The video interpolation unit (2) performs the interpolation frame generation process by using a plurality of methods, and the control unit (7) controls switching between the plurality of interpolation frame generating methods.

摘要翻译： 提供了一种用于输入视频信号并将插值帧插入到视频信号中以便转换视频信号的帧速率的帧速率转换装置（100）。 装置（100）包括：输入单元（1），用于输入视频信号; 用于产生内插帧并执行视频信号的内插处理的视频插值单元（2）; 以及控制单元（7），用于通过视频插值单元（2）控制插值帧的生成处理。 视频插值单元（2）通过使用多种方法进行插值帧生成处理，并且控制单元（7）控制多个插值帧生成方法之间的切换。

公开(公告)号：EP1667093A2

公开(公告)日：2006-06-07

申请号：EP05253951.7

申请日：2005-06-24

申请人： Hitachi, Ltd.

发明人： Mizuhashi, Yoshiaki ,  Nakajima, Mitsuo

IPC分类号： G09G3/20

CPC分类号： H04N7/014 ,  G09G5/00 ,  G09G2340/0435 ,  G09G2340/16 ,  H04N7/0112 ,  H04N7/0127

摘要： The present invention provides a technique relating to a frame rate conversion which enables display of an image of extended definition by smoothening the movement of the image. Therefore, the invention fixes the direction of interpolation using information on a first frame which appeared before the insertion time of the interpolated frame, a second frame appeared before the first frame, a third frame appeared after the insertion time, and a fourth frame appeared after the third frame, based on the insertion time of the interpolated frame. The interpolated pixel is generated from pixels of the second frame and the third frame located in the direction of interpolation, and generates the interpolated frame. Then, the interpolated frame is inserted into the inputted image signal to convert the frame rate.

摘要翻译： 本发明提供了一种与帧速率转换相关的技术，其能够通过平滑图像的移动来显示扩展定义的图像。 因此，本发明使用在内插帧的插入时间之前出现的第一帧的信息，在第一帧之前出现第二帧，在插入时间之后出现第三帧，并且在第四帧出现在第四帧之后出现第四帧， 第三帧，基于内插帧的插入时间。 内插像素从位于内插方向的第二帧和第三帧的像素生成，并生成内插帧。 然后，将内插帧插入输入的图像信号中以转换帧速率。

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：EP1667093A3

公开(公告)日：2008-10-22

申请号：EP05253951.7

申请日：2005-06-24

申请人： Hitachi, Ltd.

发明人： Mizuhashi, Yoshiaki ,  Nakajima, Mitsuo

IPC分类号： G09G3/20 ,  H04N7/01

CPC分类号： H04N7/014 ,  G09G5/00 ,  G09G2340/0435 ,  G09G2340/16 ,  H04N7/0112 ,  H04N7/0127

摘要： The present invention provides a technique relating to a frame rate conversion which enables display of an image of extended definition by smoothening the movement of the image. Therefore, the invention fixes the direction of interpolation using information on a first frame which appeared before the insertion time of the interpolated frame, a second frame appeared before the first frame, a third frame appeared after the insertion time, and a fourth frame appeared after the third frame, based on the insertion time of the interpolated frame. The interpolated pixel is generated from pixels of the second frame and the third frame located in the direction of interpolation, and generates the interpolated frame. Then, the interpolated frame is inserted into the inputted image signal to convert the frame rate.

公开(公告)号：EP0837601B1

公开(公告)日：2004-12-22

申请号：EP97117877.7

申请日：1997-10-15

申请人： Hitachi, Ltd.

发明人： Hirano, Yasuhiro ,  Ishikura, Kazuo ,  Sugiyama, Masato ,  Nakajima, Mitsuo ,  Kimura, Shoji ,  Kurita, Toshiyuki ,  Itagaki, Tsuguo ,  Takata, Haruki

IPC分类号： H04N5/44

CPC分类号： G06T3/4007 ,  H04N7/012 ,  H04N7/0122

公开(公告)号：EP0837601A3

公开(公告)日：1998-05-13

申请号：EP97117877.7

申请日：1997-10-15

申请人： HITACHI, LTD.

发明人： Hirano, Yasuhiro ,  Ishikura, Kazuo ,  Sugiyama, Masato ,  Nakajima, Mitsuo ,  Kimura, Shoji ,  Kurita, Toshiyuki ,  Itagaki, Tsuguo ,  Takata, Haruki

IPC分类号： H04N5/44

CPC分类号： G06T3/4007 ,  H04N7/012 ,  H04N7/0122

摘要： In order to carry out a format conversion or a scaling processing on a picture signal by a memory of small capacity, interlace scanning picture signals are converted into progressive scanning picture signals by interpolation by using an IP converter 1 and a multiple-scan converter 3. Scaling processing by expansion and compression in the horizontal direction is firstly performed by using a horizontal scaling unit 5, processing by expansion, compression, frame rate conversion, synchronisation and the like are secondly performed by using a vertical scaling unit 6 and commonly using memories used in scaling processing in the vertical direction, and finally, colour space conversion or inverse gamma processing is performed by using a picture quality improving unit 8 thereby converting the picture signals into picture signals S6 having a predetermined format.

摘要翻译： 为了通过小容量存储器对图像信号执行格式转换或缩放处理，通过使用IP转换器1和多重扫描转换器3通过插值将隔行扫描图像信号转换为逐行扫描图像信号。 首先通过使用水平缩放单元5执行通过水平方向上的扩展和压缩的缩放处理，然后通过使用垂直缩放单元6并且通常使用使用的存储器来执行通过扩展，压缩，帧率转换，同步等的处理 在垂直方向进行缩放处理，最后，通过使用画面质量改进单元8执行色彩空间转换或反向伽玛处理，从而将画面信号转换为具有预定格式的画面信号S6。

公开(公告)号：EP0837601A2

公开(公告)日：1998-04-22

申请号：EP97117877.7

申请日：1997-10-15

申请人： HITACHI, LTD.

发明人： Hirano, Yasuhiro ,  Ishikura, Kazuo ,  Sugiyama, Masato ,  Nakajima, Mitsuo ,  Kimura, Shoji ,  Kurita, Toshiyuki ,  Itagaki, Tsuguo ,  Takata, Haruki

IPC分类号： H04N5/44

CPC分类号： G06T3/4007 ,  H04N7/012 ,  H04N7/0122

摘要： In order to carry out a format conversion or a scaling processing on a picture signal by a memory of small capacity, interlace scanning picture signals are converted into progressive scanning picture signals by interpolation by using an IP converter 1 and a multiple-scan converter 3. Scaling processing by expansion and compression in the horizontal direction is firstly performed by using a horizontal scaling unit 5, processing by expansion, compression, frame rate conversion, synchronisation and the like are secondly performed by using a vertical scaling unit 6 and commonly using memories used in scaling processing in the vertical direction, and finally, colour space conversion or inverse gamma processing is performed by using a picture quality improving unit 8 thereby converting the picture signals into picture signals S6 having a predetermined format.

摘要翻译： 为了通过小容量的存储器对图像信号执行格式转换或缩放处理，隔行扫描图像信号通过使用IP转换器1和多扫描转换器3进行插值而被转换为逐行扫描图像信号。 首先通过使用水平缩放单元5执行通过在水平方向上的扩展和压缩的缩放处理，通过使用垂直缩放单元6并且通常使用所使用的存储器来进行扩展，压缩，帧速率转换，同步等的处理 在垂直方向进行缩放处理，最后，通过使用图像质量改善单元8执行色彩空间转换或反伽马处理，从而将图像信号转换为具有预定格式的图像信号S6。