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11. 发明授权

US06989872B2 Image distortion correcting device and image distortion correcting method 失效
公开(公告)号：US06989872B2
公开(公告)日：2006-01-24
申请号：US10088106
申请日：2001-07-23
申请人： Masanori Nakatsuji , Masanobu Tanaka , Hideyo Uwabata , Naoji Okumura , Kazunori Yamate
发明人： Masanori Nakatsuji , Masanobu Tanaka , Hideyo Uwabata , Naoji Okumura , Kazunori Yamate
IPC分类号： H04N3/23
CPC分类号： H04N3/2335
摘要： A write PLL circuit generates a write clock signal for writing a video signal into a line memory. A readout PLL circuit generates a read clock signal for reading out the video signal stored in the line memory. An inner pincushion distortion correction voltage generation circuit modulates a correction waveform in the horizontal scanning period of time by a correction waveform in the vertical scanning period of time, to generate an inner pincushion distortion correction waveform, and adds a DC correction pulse to the inner pincushion distortion correction waveform and outputs the inner pincushion distortion correction waveform as an inner pincushion distortion correction voltage. A capacitive coupling circuit superimposes the inner pincushion distortion correction voltage on an output voltage of a loop filter of the readout PLL circuit, and feeds the inner pincushion distortion correction voltage to a VCO as a control voltage.

12. 发明授权

US06429899B1 Video display apparatus with scan conversion and reversion and a video display method using scan conversion and reversion 失效
标题翻译：具有扫描转换和反转的视频显示装置和使用扫描转换和反转的视频显示方法
公开(公告)号：US06429899B1
公开(公告)日：2002-08-06
申请号：US09351847
申请日：1999-07-13
申请人： Yutaka Nio , Naoji Okumura , Katsumi Terai , Kazuto Tanaka , Satoshi Okamoto , Masaaki Fujita , Minoru Miyata
发明人： Yutaka Nio , Naoji Okumura , Katsumi Terai , Kazuto Tanaka , Satoshi Okamoto , Masaaki Fujita , Minoru Miyata
IPC分类号： H04N1100
CPC分类号： G09G1/165 , G09G1/167 , G09G2310/0229 , H04N3/30 , H04N7/01 , H04N7/012 , H04N7/0125
摘要： A video signal of an interlaced scanning system having 525 scanning lines and a vertical scanning frequency of 60 Hz is converted to a video signal having 1050 scanning lines and a vertical scanning frequency of 120 Hz, for displaying an image by bidirectional scanning. A vertical synchronizing signal is subjected to offset processing by a ¼ horizontal scanning period when an odd field is started, thereby keeping interlaced relation between odd and even fields. The vertical synchronizing signal is subjected to offset processing by a ½ horizontal scanning period every frame, so that the scanning direction for each scanning line is reversed every frame.
摘要翻译：具有525扫描线和60Hz的垂直扫描频率的隔行扫描系统的视频信号被转换为具有1050扫描线和120Hz的垂直扫描频率的视频信号，用于通过双向扫描显示图像。当奇数场开始时，垂直同步信号经过1/4水平扫描周期的偏移处理，从而保持奇数和偶数场之间的交错关系。垂直同步信号每帧进行1/2水平扫描周期的偏移处理，使得每帧扫描线的扫描方向反转。

13. 发明授权

US5666165A Video signal compression apparatus for horizontal compression of a video signal 失效
公开(公告)号：US5666165A
公开(公告)日：1997-09-09
申请号：US361634
申请日：1994-12-22
申请人： Yosuke Izawa , Masahiro Tani , Naoji Okumura , Yutaka Nio , Toshiohika Sato
发明人： Yosuke Izawa , Masahiro Tani , Naoji Okumura , Yutaka Nio , Toshiohika Sato
IPC分类号： H04N5/14 , H04N5/44 , H04N7/01 , H04N5/262
CPC分类号： H04N7/0122 , H04N5/14 , Y10S348/913
摘要： A video signal compression apparatus extracts a specific value written in a read only memory at every system clock pulse. The specific value can be varied at every clock pulse. Therefore, for example, only the center part of a picture can be horizontally compressed. A FIFO memory may be used. It is possible to select a mode with a fixed compression ratio or a mode in which a compression ratio varies at every clock pulse. Further, the fixed compression ratio can be set from the outside. Display position of the picture can also be changed.

14. 发明授权

US5459525A Video signal converting device and noise eliminator used therein 失效
标题翻译：其中使用的视频信号转换装置和噪声消除器
公开(公告)号：US5459525A
公开(公告)日：1995-10-17
申请号：US103456
申请日：1993-08-06
申请人： Yosuke Izawa , Naoji Okumura
发明人： Yosuke Izawa , Naoji Okumura
IPC分类号： H04N5/21 , H04N5/44 , H04N7/01 , H04N11/20
CPC分类号： H04N7/0122 , H04N5/21
摘要： An apparatus for converting an input video signal to a modified video signal comprises a memory for storing data corresponding to the input video signal, an address signal generating device for reading data from the memory and an interpolating filter for interpolating the data read from the memory to obtain a modified video signal. The data are stored and read from the memory using a clock having a predetermined frequency. However, since the number of addresses being read in one horizontal display varies with the conversion rate of video signals, the length of one horizontal display of the modified video signal is different from that of the input video signal.
摘要翻译：用于将输入视频信号转换为修改的视频信号的装置包括用于存储对应于输入视频信号的数据的存储器，用于从存储器读取数据的地址信号产生装置和用于内插从存储器读取的数据的内插滤波器获得修改后的视频信号。使用具有预定频率的时钟从存储器存储和读取数据。然而，由于在一个水平显示器中读取的地址的数量随着视频信号的转换速率而变化，所以修改的视频信号的一个水平显示的长度不同于输入视频信号的一个水平显示的长度。

15. 发明授权

US5247361A Outline enchancing device 失效
标题翻译：外部加强装置
公开(公告)号：US5247361A
公开(公告)日：1993-09-21
申请号：US857238
申请日：1992-03-25
申请人： Yosuke Izawa , Naoji Okumura
发明人： Yosuke Izawa , Naoji Okumura
IPC分类号： H04N5/208
CPC分类号： H04N5/208
摘要： An outline enhancing device for enhancing an outline of an image formed by a video signal having a rising and falling slope portions and a flat portion includes an enhancing signal producing circuit for producing an enhancing signal having a first, a second, and a third enhancing waveforms which wavelengths are the same as those of three portions of the video signal, respectively. A delay circuit is provided for delaying the video signal to be synchronized with the enhancing signal. A subtracter is further provided for subtracting the enhancing signal from the synchronized video signal such that three enhancing wavesforms are exactly superimposed on the rising slope, the falling slope and the flat portions, respectively, without any interference to the neighboring slopes or portion. As a result of such subtraction, the gradients of the rising and falling slopes are made large while the flat portion is extended. Thus, the outline in the video signal is enhanced without preshoots or overshoots around the outline.

16. 发明授权

US06738528B1 Block noise detector and block noise eliminator 有权
标题翻译：块噪声检测器和阻塞噪声消除器
公开(公告)号：US06738528B1
公开(公告)日：2004-05-18
申请号：US09463215
申请日：2000-01-21
申请人： Yutaka Nio , Satoshi Okamoto , Katsumi Terai , Naoji Okumura , Kazuhito Tanaka
发明人： Yutaka Nio , Satoshi Okamoto , Katsumi Terai , Naoji Okumura , Kazuhito Tanaka
IPC分类号： G06K940
CPC分类号： H04N19/865 , H04N19/527 , H04N19/80 , H04N19/86
摘要： A vertical HPF and a horizontal HPF receive a video signal 101, and extract only a high frequency component in the vertical/horizontal directions, respectively. Absolute value taking parts take an absolute value of the high frequency components, respectively, and change their values to positive values. A horizontal accumulating/adding part and a vertical accumulating/adding part accumulate/add an input signal so as to output a vertical one-dimensional signal and a horizontal one-dimensional signal, respectively, each periodically having a peak value in the respective vertical and horizontal directions. A horizontal peak detecting part detects a horizontal peak position according to the horizontal one-dimensional signal. A vertical peak detecting part detects a vertical peak position according to the vertical one-dimensional signal and identifies a format thereof. A binarization part obtains a block boundary image, according to the horizontal peak position and the vertical peak position, in which pixel positions having a peak are provided with 1 and remaining pixel positions are provided with 0. In this manner, even if a block boundary to eliminate block noise thereon is not clearly identified, it becomes possible to correctly detect and eliminate the block boundary.
摘要翻译：垂直HPF和水平HPF接收视频信号101，并且仅分别在垂直/水平方向提取高频分量。绝对值取零件分别取高频分量的绝对值，并将它们的值改为正值。水平累积/加法部分和垂直累积/相加部分分别累积/加入输入信号，以分别输出垂直一维信号和水平一维信号，每个信号周期性地具有在垂直方向上的峰值，水平方向。水平峰值检测部根据水平一维信号检测水平峰值位置。垂直峰值检测部分根据垂直一维信号检测垂直峰值位置并识别其格式。二值化部分根据水平峰值位置和垂直峰值位置获得块边界图像，其中具有峰值的像素位置为1，并且剩余像素位置被设置为0.以这种方式，即使块边界为了消除其上的块噪声没有被清楚地识别，可以正确地检测和消除块边界。

17. 发明授权

US5760840A Apparatus for distinguishing between a plurality of video signal types, apparatus for automatic aspect ratio determination and television receiver 失效
标题翻译：用于区分多个视频信号类型的装置，用于自动宽高比确定的装置和电视接收机
公开(公告)号：US5760840A
公开(公告)日：1998-06-02
申请号：US414710
申请日：1995-03-31
申请人： Masahiro Tani , Naoji Okumura , Atsuhisa Kageyama
发明人： Masahiro Tani , Naoji Okumura , Atsuhisa Kageyama
IPC分类号： H04N5/44 , H04N5/445 , H04N5/46 , H04N5/21
CPC分类号： H04N7/0122 , H04N5/46 , H04N21/4884
摘要： An automatic aspect ratio discrimination apparatus for detecting a picture starting position, a picture ending position and a subtitle ending position by generating three histograms segmented by two slice levels S and T at every line from a luminance signal Y at a comparison circuit and counters, judging when the line is black, a picture or a subtitle by inputting the obtained histograms to the comparison circuit, detecting lines varying from black to picture, from picture to black, and from subtitle to black at an edge detection circuit and judging if the lines varying from black to picture and from picture to black are stable in time or not at a temporal filter.
摘要翻译：一种自动宽高比判别装置，用于通过在比较电路和计数器处产生从亮度信号Y的每一行生成由两个限幅电平S和T分割的三个直方图来检测图像开始位置，图像结束位置和字幕结束位置，判断当通过将所获得的直方图输入到比较电路，线条为黑色，图片或字幕时，检测从黑色变化到图片的线条，从边缘检测电路从边缘检测电路检测到从黑色到黑色，从字幕变成黑色，并判断线条是否变化从黑色到图片，从图片到黑色在时间上都是稳定的，而不是在时间过滤器上。

18. 发明授权

US5629962A Phase locked loop circuit 失效
标题翻译：锁相环电路
公开(公告)号：US5629962A
公开(公告)日：1997-05-13
申请号：US8797
申请日：1993-01-27
申请人： Naoji Okumura , Masaaki Fujita
发明人： Naoji Okumura , Masaaki Fujita
IPC分类号： H03L7/08 , H03L7/187 , H04N5/06 , H04N7/01 , H03L7/06 , H03L7/16 , H03L7/18
CPC分类号： H03L7/187 , H04N5/44
摘要： A phase locked loop circuit comprises a divider which is changed in a dividing ratio in compliance with a control signal applied thereto, the output of the divider is phase-compared with an input signal of the phase locked loop circuit. A phase-compared output is applied to a low pass filter to obtain a direct current component, and an oscillator is controlled by the direct current component.
摘要翻译：锁相环电路包括按照施加到其上的控制信号以分频比改变的分频器，分频器的输出与锁相环电路的输入信号进行相位比较。将相位比较的输出施加到低通滤波器以获得直流分量，并且通过直流分量来控制振荡器。

19. 发明授权

US5363384A Audio signal demodulation circuit 失效
标题翻译：音频信号解调电路
公开(公告)号：US5363384A
公开(公告)日：1994-11-08
申请号：US164996
申请日：1993-12-10
申请人： Toshihiro Miyoshi , Naoji Okumura , Hisashi Arita , Kenji Ishikawa , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
发明人： Toshihiro Miyoshi , Naoji Okumura , Hisashi Arita , Kenji Ishikawa , Yuichi Ninomiya , Yoshimichi Ohtsuka , Tadashi Kawashima , Takushi Iwamoto
IPC分类号： H04B14/04 , H04N7/088 , H04N5/76 , G06F11/00
CPC分类号： H04B14/046 , H04N7/088
摘要： A digital audio signal demodulation circuit comprises a synchronous detection circuit (18) and a muting circuit (17) for muting the output from an interpolation circuit (16) using a synchronization lock signal generated from the synchronous detection circuit (18) when synchronization has been lost. The differential signal output from the interpolation circuit (16) is muted by the muting circuit (17) and thereafter integrated by an integration circuit (19). Thus, an audio signal with high sound quality can be demodulated without producing interruption noise even when synchronization has been lost or forcible muting is done.
摘要翻译：数字音频信号解调电路包括同步检测电路（18）和静噪电路（17），用于在同步已经被同步时使用从同步检测电路（18）产生的同步锁定信号来使内插电路（16）的输出静音丢失。由内插电路（16）输出的差分信号由静噪电路（17）静音，然后由积分电路（19）进行积分。因此，即使在同步失去或强制静音完成的情况下，也能够解调高音质的音频信号而不产生中断噪声。

20. 发明授权

US5359369A Gradation correcting apparatus for correcting gradation of video signals 失效
标题翻译：用于校正视频信号灰度的灰度校正装置
公开(公告)号：US5359369A
公开(公告)日：1994-10-25
申请号：US59910
申请日：1993-05-10
申请人： Yosuke Izawa , Naoji Okumura
发明人： Yosuke Izawa , Naoji Okumura
IPC分类号： H04N5/202 , H04N5/45 , H04N5/66 , H04N5/57
CPC分类号： H04N5/45 , H04N5/202
摘要： A gradation correcting apparatus, which can be effectively incorporated into various video devices, enables the display of a sub-display within the domain of main-display (i.e. Picture in Picture) and also enables automatic adjustment of each gradation of the display dependent on the characteristics of the respective input signal. By using both a window pulse and a main- and sub-display switching signal, gradation corrections of the displays are carried out such that either no gradation correction is applied to the sub-display or a proper correction is applied according only to the sub-display signal. In this apparatus, the luminance information related to the sub-display and the luminance information related to the main-display excluding that of the sub-display are independently inputted into a signal correction system, thereby allowing individual processing of this information. Moreover, since the signal delay caused by the arithmetic processing can be precisely compensated for by a delay device, the gradation corrections for the main- and sub-displays are exactly executed according to the respective luminance level information, thus realizing an easy-to-see Picture in a Picture.
摘要翻译：可以有效地结合到各种视频装置中的灰度校正装置使得能够在主显示器的领域（即，画中画）中显示子显示器，并且还能够依赖于显示器来自动调整显示器的每个等级各个输入信号的特性。通过使用窗口脉冲和主显示切换信号和副显示切换信号，执行显示的灰度校正，使得不对灰度校正应用或者仅根据子显示器应用适当的校正，显示信号。在该装置中，与子显示有关的亮度信息和与主显示器相关的亮度信息不包括子显示器的亮度信息被独立地输入到信号校正系统中，从而允许对该信息进行单独处理。此外，由于可以通过延迟装置精确地补偿由算术处理引起的信号延迟，因此根据各个亮度级别信息精确地执行主显示和副显示的灰度校正，从而实现易于使用，看图片中的图片。

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