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1. 发明专利

JP2011049965A Image processing apparatus and method, and image display device 有权
标题翻译：图像处理装置和方法以及图像显示装置
公开(公告)号：JP2011049965A
公开(公告)日：2011-03-10
申请号：JP2009198236
申请日：2009-08-28
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAI TOSHIHIRO , MORIYA SHOTARO , YAMANAKA SATOSHI , MINAMI KOJI , SUGIURA HIROAKI
IPC分类号： H04N5/208 , G06T5/20
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of trouble of an output image due to unnecessary emphasis on a noise component when an emphasis process is uniformly performed in the case where a lot of noise components are included a video input signal.
SOLUTION: The amount of noise included in a video input signal is detected by a noise detection means 13 to obtain a noise detection signal ND. The video input signal is reduced in noise in accordance with the noise detection signal ND by a noise reduction means 12, and becomes an input image DIN of an emphasis processing means 11. In the emphasis processing means 11, a first intermediate image obtained by extracting a component in the vicinity of a specific frequency band from an input image DIN11 by an intermediate image generation means 111 is generated, a coring process in accordance with the noise detection signal ND is executed to an image of a high-frequency component obtained by applying nonlinear processing to the first intermediate image, and the first intermediate image by an intermediate image generation means 112 to generate a second intermediate image by adding them to each other, and the input image DIN11 is added to the second intermediate image by an addition means 113 to generate a video output signal.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了防止当在包括大量噪声分量的情况下均匀地执行加强处理时由于不必要地强调噪声分量而导致的输出图像的故障的发生，视频输入信号。解决方案：由噪声检测装置13检测包括在视频输入信号中的噪声量，以获得噪声检测信号ND。视频输入信号根据噪声检测信号ND由噪声降低装置12降低噪声，并成为加重处理装置11的输入图像DIN。在加重处理装置11中，通过提取获得的第一中间图像产生由中间图像产生装置111从输入图像DIN11在特定频带附近的分量，对通过应用获得的高频分量的图像执行根据噪声检测信号ND的取芯处理通过中间图像生成装置112对第一中间图像进行非线性处理，以及第一中间图像，以通过将它们相加来生成第二中间图像，并且通过加法装置113将输入图像DIN11添加到第二中间图像以产生视频输出信号。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2010276640A Video signal processing circuit and video display device 审中-公开
标题翻译：视频信号处理电路和视频显示设备
公开(公告)号：JP2010276640A
公开(公告)日：2010-12-09
申请号：JP2009126115
申请日：2009-05-26
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAI TOSHIHIRO , YASUI HIRONOBU , MINAMI KOJI , NAKAGAWA NAOKI
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20
摘要： PROBLEM TO BE SOLVED: To provide a video signal processing circuit which conducts signal processing to perform video display with high quality, as though a video is displayed by a display panel having ideal sub-pixels arranged at equal pitch for the display panel, having a plurality of sub-pixels arranged at non-equal pitches in a predetermined direction, and to provide a video display device.
SOLUTION: Signal processing circuits 11a, 11b, 11d of the video signal processing circuit 11, each includes a coefficient holding means for holding a coefficient calculated, based on the distance between the position of the sub-pixel in the predetermined direction and the positions of two ideal sub-pixels in the predetermined direction which are arranged at equal pitch in the predetermined direction; a pixel signal select means for selecting two pixel signals, including the pixel signals of the sub-pixel to be corrected from input pixel signals concerning three sub-pixels which are sub-pixels of the same color and closest to each other in the predetermined direction; and a computing means for generating a corrected pixel signal concerning the sub-pixel to be corrected by linear interpolation, by using the pixel values of the two selected pixel signals and the above coefficient.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种以高质量进行信号处理以进行视频显示的视频信号处理电路，如同显示面板具有以等间距布置的理想子像素的显示面板显示的视频具有以预定方向以非等间距排列的多个子像素，并提供视频显示装置。解决方案：视频信号处理电路11的信号处理电路11a，11b，11d分别包括系数保持装置，用于将基于预定方向上的子像素的位置之间的距离和在预定方向上以等间距布置的两个理想子像素的位置; 像素信号选择装置，用于从关于作为相同颜色的子像素并且在预定方向上彼此最接近的三个子像素的输入像素信号中选择包括要校正的子像素的像素信号的两个像素信号 ; 以及计算装置，用于通过使用两个所选择的像素信号的像素值和上述系数来生成关于要通过线性内插校正的子像素的校正像素信号。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2010130155A Video signal processing apparatus and method, and video display apparatus 有权
标题翻译：视频信号处理装置和方法以及视频显示装置
公开(公告)号：JP2010130155A
公开(公告)日：2010-06-10
申请号：JP2008300735
申请日：2008-11-26
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： ASAMURA MASAKO , KAI TOSHIHIRO , MINAMI KOJI
IPC分类号： H04N5/14 , G06T7/20 , H04N5/21 , H04N7/01 , H04N9/78
摘要： PROBLEM TO BE SOLVED: To detect motion well with high precision by avoiding incorrect detection of motion near the edge of an image.
SOLUTION: A video signal processing apparatus includes a micro motion detection means (30) for calculating (31) the dissimilarity between a pixel block (bl0f) centering on a pixel of interest (P0) and a plurality of reference pixel blocks (bl2f1, bl2f2, bl2f3) located in different frames and centering on a pixel located in a predetermined range on the periphery (A) of the pixel of interest, detecting the edge near the pixel (P0), and for output of an adjusted micro motion detection signal (MATRD) which is the detection results of micro motion near the edge from the calculation results of dissimilarity and the detection results of edge, and a motion information detection means (15) for determining the motion information (md) by adjusting the difference signal (Dm) between frames with the adjusted micro motion detection signal (MATRD).
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过避免错误检测图像边缘附近的运动，以高精度检测运动。解决方案：视频信号处理装置包括微动检测装置（30），用于计算（31）以感兴趣像素（P0）为中心的像素块（b10f）与多个参考像素块（位于不同帧并且以位于感兴趣像素的周边（A）上的预定范围内的像素为中心，检测靠近像素（P0）的边缘，并且用于输出调整后的微动作（b12f1，b12f2，b12f3）检测信号（MATRD），其是来自边缘的计算结果和边缘的检测结果的边缘附近的微运动的检测结果，以及运动信息检测装置（15），用于通过调整差异来确定运动信息（md）帧之间的信号（Dm）与调整后的微动检测信号（MATRD）。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2009124637A Frame interpolating apparatus, and frame interpolation method 有权
标题翻译：框架内插装置和框架插值方法
公开(公告)号：JP2009124637A
公开(公告)日：2009-06-04
申请号：JP2007299068
申请日：2007-11-19
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： SAKUWA CHIHIRO , MINAMI KOJI , KAI TOSHIHIRO , YASUI HIRONOBU
IPC分类号： H04N7/01
摘要： PROBLEM TO BE SOLVED: To generate an image of an interpolation frame between two frames so as not to incur motion picture blurring or judder. SOLUTION: Similarity is calculated for each block pair constituted of a pixel block (BLa) of a first reference frame and a pixel block (BLb) of a second reference frame disposed at positions of point symmetry around an interpolation pixel within an interpolation frame and based on the similarity of the block pairs, a representative pixel block pair is extracted (6) from among a plurality of areas (A to I) divided by a direction and a length of a straight line connecting center pixels of pixel blocks of the first and second reference frames. A pixel block pair having maximum similarity is then selected (7) from the extracted representative pixel block pair as a candidate block pair, and a center position of the candidate block pair is selected (9) as a reference pixel position. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了产生两帧之间的内插帧的图像，以便不引起运动图像模糊或抖动。解决方案：对于由第一参考帧的像素块（BLa）和布置在插补内的内插像素周围的点对称位置的第二参考帧的像素块（BLb）构成的每个块对，计算相似度并且基于块对的相似度，从多个区域（A至I）中除以与由连接的块对的像素块的中心像素连接的直线的方向和长度分开的代表像素块对（6）第一和第二参考帧。然后，从提取的代表像素块对中选择具有最大相似度的像素块对作为候选块对，并且选择候选块对的中心位置（9）作为参考像素位置。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2008135804A Motion detection circuit 有权
标题翻译：运动检测电路
公开(公告)号：JP2008135804A
公开(公告)日：2008-06-12
申请号：JP2006318171
申请日：2006-11-27
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAI TOSHIHIRO , YASUI HIRONOBU , MINAMI KOJI , ASAMURA MASAKO , AZUMA SOUICHIRO , MIMURA KENTARO
IPC分类号： H04N9/78
摘要： PROBLEM TO BE SOLVED: To detect motion accurately even if a color signal largely moves in an adjacent frame and the signal two frames after returns to the same position of the initial frame.
SOLUTION: A color difference detection means 12 for detecting the differential signal of the color signal comprises: a horizontal BPF 1211 receiving input image data Va0; a horizontal BPF 1212 receiving delay image data Vb0; a color difference extraction means 121 for inverting the phase of output of one horizontal BPF (1215) to be subtracted from output of the other BPF; and a sensitivity conversion means 122 comprising an absolute value operation means 1221, a prefilter 1222, and a ROM 1223, thus detecting the motion of a color signal even if, for example, the color signal largely moves in an adjacent frame and the signal two frames after returns to the same position of the initial frame.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使颜色信号在相邻帧中大幅移动，并且两帧之后的信号返回到初始帧的相同位置，也能精确地检测运动。解决方案：用于检测彩色信号的差分信号的色差检测装置12包括：接收输入图像数据Va0的水平BPF1211; 接收延迟图像数据Vb0的水平BPF1212; 色差提取装置121，用于将要从另一BPF的输出中减去的一个水平BPF（1215）的输出相位反相; 以及包括绝对值操作装置1221，预滤波器1222和ROM 1223的灵敏度转换装置122，因此即使例如彩色信号在相邻帧中大幅移动，也检测到彩色信号的运动，并且信号二返回到初始帧的相同位置的帧。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2004254273A Scanning line interpolation apparatus, image processing apparatus, image display device and scanning line interpolation method 有权
标题翻译：扫描线插入装置，图像处理装置，图像显示装置和扫描线插值方法
公开(公告)号：JP2004254273A
公开(公告)日：2004-09-09
申请号：JP2003173167
申请日：2003-06-18
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MINAMI KOJI , ASAMURA MASAKO , SAKUWA CHIHIRO , KAI TOSHIHIRO
IPC分类号： H04N7/01 , H04N1/04 , H04N1/46
CPC分类号： H04N7/012 , H04N7/0137 , H04N7/0142 , H04N19/112 , H04N19/117 , H04N19/132 , H04N19/14 , H04N19/16 , H04N19/59 , H04N19/85
摘要： PROBLEM TO BE SOLVED: To realize scanning line conversion which prevents "blur" or "unsmoothness" on a border line of an inclined portion and further prevents a break in a fine line portion even in an image which includes the inclined portion extending obliquely to the scanning line or a fine line extending by forming a small angle with the direction of the scanning line. SOLUTION: A scanning line interpolation apparatus is provided with: a pattern matching means 4 for calculating the similarity of patterns for each of a plurality of pixel block pairs which are positioned in point symmetry with respect to an interpolation pixel and each of which is composed of two pixel blocks including the same number of peripheral pixels; a similar edge judging means 5 for judging the presence/absence of mutually similar edges in two pixel blocks with respect to each of the plurality of pixel block pairs; and an interpolation direction determining means 6 for determining an interpolation direction on the basis of the positions of two pixel blocks in a pixel block pair wherein the similarity calculated by the pattern matching means is the highest among the pixel block pairs for which the presence of the similar edges is found by the similar edge judging means. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了实现防止倾斜部分的边界线上的“模糊”或“不平滑”的扫描线转换，并且即使在包括倾斜部分延伸的图像中也可以防止细线部分中的断裂倾斜于扫描线或通过与扫描线的方向形成小角度而延伸的细线。解决方案：扫描线内插装置具有：模式匹配装置4，用于计算多个像素块对中的每一个相对于插值像素位置对称的图案的相似度，由包括相同数量的周边像素的两个像素块组成; 相似的边缘判断装置5，用于相对于多个像素块对中的每一个判断两个像素块中存在/不存在相互相似的边缘; 以及内插方向确定装置6，用于基于像素块对中的两个像素块的位置来确定内插方向，其中由图案匹配装置计算出的相似度在存在图像匹配装置的像素块对中是最高的类似的边缘判断装置找到相似的边缘。版权所有（C）2004，JPO＆NCIPI

7. 发明专利

JP2002152773A LUMINANCE SIGNAL/CHROMINANCE SIGNAL SEPARATING FILTERING DEVICE 失效
公开(公告)号：JP2002152773A
公开(公告)日：2002-05-24
申请号：JP2000338683
申请日：2000-11-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： MIMURA YOSHIAKI , YAMAMOTO YUJI , KAI TOSHIHIRO
IPC分类号： H04N9/78
摘要： PROBLEM TO BE SOLVED: To provide a luminance signal/chrominance signal separating filtering device of simple circuit configuration for converting the video signal of a first sampling frequency to the video signal of a second sampling frequency, separating the video signal to a chrominance signal and a luminance signal and converting the separated chrominance signal and luminance signal to the original chrominance signal and luminance signal of the first sampling frequency. SOLUTION: This device is provided with a sampling frequency converting circuit, and the circuit converts the sampling frequency by performing counting repeatedly to a number obtained by dividing a number E1(H1) of samples during a horizontal effective video interval (horizontal scanning interval) at the first sampling frequency or number E2(H2) of samples during a horizontal effective video interval (horizontal scanning interval) at the second sampling frequency by the common divisor of E1(H1) and E2(H2), converting the sample value of a signal at the first (second) sampling frequency to a sample value at the second (first) sampling frequency by a digital filter corresponding to the count value and outputting the converted sample value synchronously to an operating clock.

8. 发明专利

JP2000324511A LUMINANCE SIGNAL AND COLOR SIGNAL SEPARATING CIRCUIT 失效
公开(公告)号：JP2000324511A
公开(公告)日：2000-11-24
申请号：JP12946299
申请日：1999-05-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAI TOSHIHIRO , KOJIMA MASANORI
IPC分类号： H04N9/78
摘要： PROBLEM TO BE SOLVED: To obtain a luminance signal and a color signal separating circuit which generates no dot disturbance even when horizontal color transient is present or when a color signal changes between lines. SOLUTION: This separating circuit is equipped with a variable pass-band color signal extraction filter 101 which extracts a color signal from a composite video signal (v), a luminance signal extraction filter 701 which obtains a luminance output by subtracting a color output from the signal (v), a vertical dot frequency component extraction filter 201 which extracts vertical dot components almost a half as high as a line correlation frequency and a nearly 2/3 time as high as a color carrier frequency from the signal (v), a horizontal dot frequency component extraction filter 301 which extracts horizontal dot components almost 1/4 time as high as the line correlation frequency and nearly at the color carrier frequency from the signal (v), a reference signal extractor 501 which extracts a specific frequency component from the signal (v), a comparator 601 which obtains the output of comparison between vertical dot components and reference component, and a means which switches the pass-band of the color signal extraction filter 101 so as to include the vertical dot frequency area when the comparison output shows that many vertical components are present.

9. 发明专利

JP2000201356A LUMINANCE SIGNAL AND COLOR SIGNAL SEPARATING CIRCUIT 失效
公开(公告)号：JP2000201356A
公开(公告)日：2000-07-18
申请号：JP278299
申请日：1999-01-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAI TOSHIHIRO , KOJIMA MASANORI
IPC分类号： H04N9/78
摘要： PROBLEM TO BE SOLVED: To obtain a luminance signal and color signal separating circuit by which no vertical dot is generated even when color transient exists in the horizontal direction. SOLUTION: The luminance signal and color signal separating circuit is provided with a color extracting means 101 to switch passing bands of a color signal to be extracted from a composite video signal, a luminance extracting means 701 to obtain luminance output by subtracting color output from the composite video signal, a frequency component of vertical dot detecting means 201 to extract vertical dot components from a vertical dot frequency area near a half of line correlation frequency from the composite video signal and near 2/3 of color carrier frequency, a reference signal extracting means 501 to detect reference components of specified frequency of the composite video signal and a comparison means 601 to obtain compared output between the vertical dot components and the reference components and the passing band of the color extracting means is switched so that the vertical dot frequency area is included in the passing band when a state that many vertical dot components exist is shown by the compared output.

10. 发明专利

JPH08265795A LUMINANCE SIGNAL/COLOR SIGNAL SEPARATION FILTER 失效
公开(公告)号：JPH08265795A
公开(公告)日：1996-10-11
申请号：JP6581595
申请日：1995-03-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAI TOSHIHIRO , MISHIMA HIDETOSHI
IPC分类号： H04N9/78 , H03H17/00 , H03H17/02
摘要： PURPOSE: To provide a luminance signal/color signal separation filter capable of accurately separating luminance signals and color signals without picture quality degradation caused by making the scale of a memory to be used small while lowering a cost thereby. CONSTITUTION: Composite video signals sampled by a frequency synchronized with a carrier color signal reference frequency or a horizontal scanning frequency are divided into blocks for picture elements for which the phase of carrier color signals is the same. A maximum/minimum value detection circuit 3 obtains a maximum value and a minimum value for the respective blocks and a gradation threshold preparation circuit 7 prepares plural gradation range threshold values on the basis of the maximum values and the minimum values. Then, sample values are compared with the plural gradation range thresholds and signals for indicating gradation ranges to which the respective sample values belong are obtained, stored in the memory, then read and used for color signal extraction.

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