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公开(公告)号：US4609947A
公开(公告)日：1986-09-02
申请号：US526062
申请日：1983-08-24
申请人： Kazuo Yamagiwa , Kiyoshi Nishitani , Koichi Takeuchi , Seiji Sato
发明人： Kazuo Yamagiwa , Kiyoshi Nishitani , Koichi Takeuchi , Seiji Sato
CPC分类号： G11B15/61 , G11B5/0086 , G11B5/531 , H04N5/78263 , H04N9/83 , Y10S358/906
摘要： A video signal recording apparatus of reduced size for portability combines a video camera and helical scan video tape recorder in a single unit, in which the reduced size is obtained in part by having a tape guide drum of reduced diameter, which requires a tape wrap angle greater than the conventional 180.degree. and employs a pair of rotary tape heads that are arranged close together relative to the diametrically opposed conventional head arrangement. The timing of the heads in recording the fields of the video signals as tracks is controlled by a vertical synchronization signal having pulses that are delayed to account for the finite distance between the two rotary heads. The vertical sync signal then has a different time period for a first field than it does for a second field of one frame of the video signal. The camera has an image pickup portion that is caused to be scanned by the same synchronization signals utilized in the recording operation. This permits any horizontal overscan to occur at a time when the heads are off the tape and by adjusting the time base of the vertical sync signal the overscan can be arranged so that the portion of it is above and below the effective portion of the image pickup portion of the camera.
摘要翻译： 用于便携性的尺寸减小的视频信号记录装置将摄像机和螺旋扫描磁带录像机组合在一个单元中，其中减小的尺寸部分地通过具有减小的直径的导带鼓获得，其需要带包裹角 大于传统的180°，并且采用相对于径向相对的传统头部布置靠近放置的一对旋转磁带头。 将视频信号的场作为磁道记录磁头的定时由具有被延迟以考虑两个旋转磁头之间的有限距离的脉冲的垂直同步信号控制。 然后，垂直同步信号对于第一场具有不同于视频信号的一帧的第二场的不同时间段。 相机具有通过在记录操作中使用的同一同步信号被扫描的图像拾取部分。 这允许在磁头离开磁带的时候发生任何水平的过扫描，并且通过调整垂直同步信号的时基可以布置过扫描，使得其部分位于图像拾取器的有效部分的上方和下方 相机的一部分。
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公开(公告)号：US4198650A
公开(公告)日：1980-04-15
申请号：US825170
申请日：1977-08-16
申请人： Masayuki Hongu , Takeshi Hamada , Kazuo Yamagiwa
发明人： Masayuki Hongu , Takeshi Hamada , Kazuo Yamagiwa
CPC分类号： H04N5/923
摘要： A video signal processing circuit includes an amplifier with a circuit connected to it to emphasize the amplification of some frequencies relative to others. A non-linear circuit is also connected to the amplifier and comprises a capacitor connected in series with non-linear elements that change the amplification of positive and negative overshoots of the signal relative to the middle amplitude range. The result is non-linear modification of emphasis and can be used to pre-emphasize video signals before using them to modulate the frequency of a carrier and, in the playback section to de-emphasize the signals to minimize FM noise. Use of the capacitor prevents direct current from flowing and thus affecting the threshold levels of the non-linear elements. Component values can be selected to effect temperature compensation.
摘要翻译： 视频信号处理电路包括具有与其连接的电路的放大器，以强调相对于其他频率的一些频率的放大。 非线性电路也连接到放大器，并且包括与非线性元件串联连接的电容器，其改变信号相对于中间幅度范围的正和负过冲的放大。 结果是强调的非线性修改，并且可以用于在使用它们调制载波的频率之前预加重视频信号，并且在播放部分中去强调信号以最小化FM噪声。 使用电容器可防止直流电流流动，从而影响非线性元件的阈值电平。 可以选择组件值进行温度补偿。
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3.发明授权IC device compatible with input signals in the formats for two-line and four-line type bus lines 失效IC器件兼容双线和四线式总线线路输入信号
公开(公告)号：US4769781A
公开(公告)日：1988-09-06
申请号：US925374
申请日：1986-10-30
申请人： Norihisa Shirota , Shinji Takada , Kazuo Yamagiwa
发明人： Norihisa Shirota , Shinji Takada , Kazuo Yamagiwa
IPC分类号： G06F13/12 , G06F3/00 , G06F13/14 , G06F13/20 , G06F13/38 , G06F13/42 , G11C19/00 , H04Q9/00 , G06F13/00
CPC分类号： G06F13/4291
摘要： An IC device has a first terminal for inputting date in the format for a four-line or two-line type bus line, and for outputting data, a second terminal for receiving a chip select signal, a third terminal for receiving a clock pulse, a fourth terminal for outputting data a first signal processor for receiving data from the first terminal in the format for a two-line type bus line and including an address signal and for outputting the data such first signal processor including a detector for detecting the address signal, a second signal processor for receiving the data supplied from the first terminal in the format of a four-line type bus line and outputting the data to the fourth terminal, the first and second signal processors being selectively enabled in accordance with the chip select signal, and a control unit for receiving the signal from the first or second signal processor and outputting the data to the first terminal or the first or second signal processors.
摘要翻译： IC器件具有用于以四线或双线型总线的格式输入日期的第一端子，并且用于输出数据，用于接收芯片选择信号的第二端子，用于接收时钟脉冲的第三端子， 用于输出数据的第四终端，用于以二线式总线的格式接收来自第一终端的数据并包括地址信号的第一信号处理器，并且用于输出数据，第一信号处理器包括用于检测地址信号的检测器 第二信号处理器，用于以四线式总线的格式接收从第一终端提供的数据，并将数据输出到第四终端，第一和第二信号处理器根据片选信号选择性地使能 以及控制单元，用于从第一或第二信号处理器接收信号，并将数据输出到第一终端或第一或第二信号处理器。
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公开(公告)号：US3947871A
公开(公告)日：1976-03-30
申请号：US521203
申请日：1974-11-05
申请人： Shinji Amari , Kazuo Yamagiwa
发明人： Shinji Amari , Kazuo Yamagiwa
CPC分类号： H04N9/793
摘要： In a color video signal reproducing apparatus having a plurality of magnetic heads, chrominance signals contained in color video signals respectively reproduced by the plurality of magnetic heads are separately subjected to level or gain control with a view to being equal in level, the levels of the respective chrominance signals are discriminated or detected and, when the level of any one or more of the chrominance signals is outside the control range of the above level or gain control, a so-called color killer operation is carried out.
摘要翻译： 在具有多个磁头的彩色视频信号再现装置中，分别由多个磁头再现的彩色视频信号中包含的色度信号分别进行电平或增益控制，以使电平相等， 鉴别或检测各个色度信号，并且当色度信号中的任何一个或多个的电平超出上述电平或增益控制的控制范围时，执行所谓的彩色抑制器操作。
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公开(公告)号：US4533949A
公开(公告)日：1985-08-06
申请号：US415836
申请日：1982-09-08
申请人： Yasushi Fujimura , Takashi Okada , Kazuo Yamagiwa
发明人： Yasushi Fujimura , Takashi Okada , Kazuo Yamagiwa
CPC分类号： G11B20/0021 , G11B20/00086 , G11B20/00282 , H04N5/913 , H04N7/167 , H04N7/1675 , G06F2211/007 , H04N2005/91364
摘要： In a subscription television system, only a video signal for a specific program is scrambled in a television signal in accordance with a predetermined scrambling mode. A key signal, used for unscrambling the scrambled video signal, is generated in response to the scrambling mode. The key signal is transmitted after the scrambled program.
摘要翻译： 在订阅电视系统中，根据预定的加扰模式，只有用于特定节目的视频信号在电视信号中被加扰。 响应于加扰模式产生用于解扰加扰视频信号的密钥信号。 关键信号在加扰程序后传输。
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6.发明授权
公开(公告)号：US4326223A
公开(公告)日：1982-04-20
申请号：US34749
申请日：1979-04-30
申请人： Kazuo Yamagiwa , Yukihiko Machida
发明人： Kazuo Yamagiwa , Yukihiko Machida
CPC分类号： H03G11/002 , H03G7/00 , H03G9/18 , H04N5/923
摘要： In apparatus for reproducing a video signal which is recorded on a recording medium with a luminance component thereof non-linearly pre-emphasized and the signal portions thereof greater than a predetermined level being clipped; there are provided a non-linear de-emphasizing circuit which non-linearly attenuates the reproduced luminance component in a manner substantially complementary to the amount of the non-linear pre-emphasis, a gain control element, for example, in the form of a transistor, having a variable gain, and a compensating circuit for substantially recovering the clipped signal portions upon reproduction of the video signal, and in which the compensating circuit increases the gain of the gain control element for the portions of the reproduced luminance component at the predetermined level. The compensating circuit desirably includes a switching diode connected at one terminal to the collector of the gain control transistor and to a reference voltage at the other terminal such that the diode is made conductive for the portions of the reproduced luminance component of the video signal at the predetermined level to increase the gain of the transistor at the collector thereof.
摘要翻译： 在用于再现记录在记录介质上的视频信号的装置中，其中具有非线性预加重的亮度分量并且其信号部分大于预定电平的信号被剪切; 提供了一种非线性去加重电路，其以与非线性预加重的量基本上互补的方式非线性衰减再现的亮度分量，增益控制元件例如以 晶体管，具有可变增益;以及补偿电路，用于在视频信号再现时基本上恢复限幅信号部分，并且其中补偿电路将预定的再现亮度分量的部分的增益控制元件的增益增大 水平。 补偿电路理想地包括连接到增益控制晶体管的集电极的一个端子处的开关二极管和另一端子处的参考电压，使得二极管对于视频信号的再现亮度分量的部分在 预定电平以增加晶体管在其集电极处的增益。
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公开(公告)号：US4558283A
公开(公告)日：1985-12-10
申请号：US578038
申请日：1984-02-08
申请人： Kazuo Yamagiwa
发明人： Kazuo Yamagiwa
CPC分类号： H03B21/00
摘要： There is provided a sum or differential frequency signal generating circuit for two input signals of first and second frequencies. This circuit comprises: 1st and 2nd differential amplifiers which receive the input signal of the 1st frequency and generate differential 1st and 2nd output currents having the phase difference of 90.degree.; 3rd and 4th differential amplifiers which receive the input signal of the 2nd frequency and generate differential 3rd and 4th output currents having the phase difference of 90.degree.; a 1st multiplier consisting of a differential amplifier for generating the multiplication output current of the output currents of the 1st and 3rd differential amplifiers; a 2nd multiplier consisting of a differential amplifier for generating the multiplication output current of the output currents of the 2nd and 4th differential amplifiers; and an output terminal at which the output currents of the 1st and 2nd multipliers are synthesized and fetched. This signal generating circuit hardly needs adjusting circuit but can suppress unnecessary signal components and is suitable for making an IC and can be applied to an SSB modulator and other similar circuits.
摘要翻译： 为第一和第二频率的两个输入信号提供了一个或差分频率信号产生电路。 该电路包括：第一和第二差分放大器，其接收第一频率的输入信号，并产生相位差为90°的差分第一和第二输出电流; 第三和第四差分放大器接收第二频率的输入信号，并产生相位差为90°的差分第三和第四输出电流; 第一乘法器，包括用于产生第一和第三差分放大器的输出电流的乘法输出电流的差分放大器; 第二乘法器，由用于产生第二和第四差分放大器的输出电流的乘法输出电流的差分放大器组成; 以及输出端，其中合成并取出第1和第2乘法器的输出电流。 该信号发生电路几乎不需要调整电路，但是可以抑制不必要的信号分量，并且适合于制造IC并且可以应用于SSB调制器和其他类似的电路。
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公开(公告)号：US4223338A
公开(公告)日：1980-09-16
申请号：US806512
申请日：1977-06-14
CPC分类号： H04N5/775
摘要： In a color television system having a video tape recorder and a color television receiver which includes an automatic control circuit for automatically controlling color level and hue with a reference signal contained in a predetermined horizontal scanning line section of a video signal, and which is so designed that a broadcasting signal and a reproduced signal of the video tape recorder are selectively received by the color television receiver, the automatic control circuit rendered inoperative in response to a change-over operation by which the color television system is changed over to apply the reproduced signal of the video tape recorder to the color television receiver.
摘要翻译： 在具有录像机和彩色电视接收机的彩色电视系统中，该彩色电视接收机包括一个自动控制电路，用于利用包含在视频信号的预定水平扫描线路部分中的参考信号来自动控制色阶和色相，并且被设计成 由彩色电视接收机选择性地接收录像机的广播信号和再现信号，响应于彩色电视系统转换的转换操作，自动控制电路变得不起作用，以便再现信号 的录像机到彩色电视接收机。
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公开(公告)号：US4220964A
公开(公告)日：1980-09-02
申请号：US960839
申请日：1978-11-15
申请人： Kazuo Yamagiwa , Toshihiko Numakura
发明人： Kazuo Yamagiwa , Toshihiko Numakura
摘要： Apparatus for recording and/or reproducing a SECAM composite color television signal in parallel tracks on a record medium. The luminance and chrominance components of the SECAM television signal are separated from each other, and then the luminance component is modulated to a higher frequency range while the chrominance component is frequency-converted to a lower frequency range. These frequency-modified components are recombined and recorded. In frequency-converting the chrominance component, first and second frequency-converting carrier signals are generated, and the phases of these frequency-converting signals are synchronized, or locked, to the incoming SECAM television signal so as to exhibit corresponding phase changes. When these frequency-converting signals are used to frequency-convert the chrominance component of the SECAM television signal, the resultant frequency-converted chrominance components are recorded in at least one track with a substantially constant phase and in the next adjacent track with a frequency-converted sub-carrier which differs from that of the said one track. The recorded frequency-converted sub-carrier frequencies in adjacent tracks are in frequency interleaved relation with respect to each other. In one embodiment of the recording apparatus, the frequencies of the frequency-converting signals differ from each other by n/4fh, wherein n is an integer (preferably 1) and fh is the horizontal line frequency of the SECAM television signal. In this embodiment, the phase of the recorded chrominance subcarrier is constant for all tracks.
摘要翻译： 用于在记录介质上的并行轨道中记录和/或再现SECAM复合彩色电视信号的装置。 SECAM电视信号的亮度和色度分量彼此分离，然后将亮度分量调制到更高的频率范围，同时色度分量被频率转换为较低的频率范围。 这些频率修正的组件被重组和记录。 在对色度分量进行频率转换时，产生第一和第二频率转换载波信号，并将这些频率转换信号的相位同步或锁定到输入的SECAM电视信号，以便表现相应的相位变化。 当使用这些频率转换信号对SECAM电视信号的色度分量进行频率转换时，所得到的经频率转换的色度分量被记录在具有基本上恒定相位的至少一个轨道中，并且在下一个相邻轨道中被记录， 转换的子载波与所述一个轨道的不同。 相邻轨道中经记录的频率转换的子载波频率彼此之间具有频率交替关系。 在记录装置的一个实施例中，频率转换信号的频率彼此不同，为n / 4fh，其中n为整数（优选为1），fh为SECAM电视信号的水平线频率。 在本实施例中，记录的色度副载波的相位对于所有轨道是恒定的。
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10.发明授权
公开(公告)号：US4268874A
公开(公告)日：1981-05-19
申请号：US16924
申请日：1979-03-02
CPC分类号： G11B15/1841 , G11B21/10 , G11B5/588
摘要： An apparatus for reproducing a video signal recorded in skewed parallel tracks on a magnetic tape compensates both for cross-track and along-track errors during reproduction at a tape speed different from the tape speed employed during recording by affixing reproducing heads to bi-morph leaves which are skewed with respect to the direction of rotation of a rotating drum to which they are attached. The skew has components in the along-track direction and the across-track direction such that unidirectional motions of the bi-morph leaves simultaneously correct for cross-track and along-track errors.
摘要翻译： 一种用于再现记录在磁带上的偏斜平行轨道中的视频信号的装置在再现期间以不同于在记录期间所使用的磁带速度的磁带速度将重放磁头固定到双变形叶片上的交叉轨道和沿轨道误差补偿两者 它们相对于它们所连接的旋转滚筒的旋转方向倾斜。 偏斜具有在沿轨道方向和跨轨道方向上的分量，使得双变形的单向运动离开同时对于跨轨道和沿轨道误差的正确。
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