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公开(公告)号：US4471381A
公开(公告)日：1984-09-11
申请号：US357132
申请日：1982-03-11
CPC分类号： H04N7/0135 , H04N7/01
摘要： A system for converting number of scanning lines converts a first number of scanning lines of a first digital video signal into a second number of scanning lines of a second digital video signal. The system comprises a discrete signal obtaining circuit supplied with the first digital video signal, for successively re-arranging a plurality of picture element information arranged along lines in a vertical direction with respect to a picture frame indicated by the first digital video signal within a time interval corresponding to the first number of scanning lines in units of each of the lines in the vertical direction in a time series manner, to obtain a discrete signal having a sampling frequency equal to a horizontal scanning frequency of the first digital video signal, a sampling frequency converter for converting the sampling frequency of the discrete signal obtained from the discrete signal obtaining circuit into a frequency equal to a horizontal scanning frequency of the second digital video signal, and a second video signal obtaining circuit for successively re-arranging an output of the sampling frequency converter in units of a plurality of picture element information along a direction of horizontal scanning lines in accordance with the second digital video signal in a time series manner, to obtain the second digital video signal using the second number of scanning lines.
摘要翻译： 用于转换扫描线数量的系统将第一数字视频信号的第一数量的扫描线转换成第二数字视频信号的第二数量的扫描线。 该系统包括提供有第一数字视频信号的离散信号获取电路，用于在一段时间内相对于由第一数字视频信号指示的画面沿着垂直方向的线排列重新排列的多个像素信息 以与时间序列方式的垂直方向上的每行的单位相对应的第一扫描线数的间隔，以获得具有等于第一数字视频信号的水平扫描频率的采样频率的离散信号，采样 频率转换器，用于将从离散信号获取电路获得的离散信号的采样频率转换成等于第二数字视频信号的水平扫描频率的频率;以及第二视频信号获取电路，用于连续重新布置 采样频率转换器以多个像素信息a1为单位 以时间序列方式按照第二数字视频信号的水平扫描线的方向，使用第二数量的扫描线来获得第二数字视频信号。
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公开(公告)号：US4152550A
公开(公告)日：1979-05-01
申请号：US843856
申请日：1977-10-20
申请人： Nobuaki Takahashi , Fujio Suzuki , Masao Kasuga , Norio Shibata
发明人： Nobuaki Takahashi , Fujio Suzuki , Masao Kasuga , Norio Shibata
摘要： A multichannel record disc reproducing apparatus has a pickup cartridge for picking up signals from a multichannel record disc. A multiplexed signal was recorded on the disc by first multiplexing direct wave signals and angle-modulated wave signals which are recorded on opposite groove walls. Filters separate the picked up multiplexed signal into the direct wave signal and the angle-modulated wave signal. A demodulates circuit for demodulating the angle-modulated wave signal, thus separated. A matrix circuit separates the signals to obtain a plurality of separate channels from the direct wave signals and the demodulated signals. A circuit in a stage preceding the demodulator removes substantially all components of the higher harmonics at the carrier wave center frequency, which carrier was used for angle-modulating the original signal.
摘要翻译： 多通道记录盘再现装置具有用于从多声道记录盘拾取信号的拾取盒。 通过首先复用记录在相对的槽壁上的直接波信号和角度调制波信号，将多路复用的信号记录在盘上。 滤波器将拾取的复用信号分离成直接波信号和角度调制波信号。 解调电路，用于解调被分离的角度调制波信号。 矩阵电路分离信号以从直接波信号和解调信号中获得多个分离的信道。 在解调器之前的阶段中的电路基本上去除了载波中心频率处的高次谐波的所有分量，该载波用于对原始信号进行角度调制。
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公开(公告)号：US3991283A
公开(公告)日：1976-11-09
申请号：US612640
申请日：1975-09-12
申请人： Yasuo Itoh , Nobuaki Takahashi , Masao Kasuga
发明人： Yasuo Itoh , Nobuaki Takahashi , Masao Kasuga
CPC分类号： G11B23/0007 , H03G5/18 , H03G7/00
摘要： A multichannel record disc reproducing system comprises a circuit for demodulating an angle-modulated wave picked up from a multichannel record disc. A circuit detects abnormal phenomena of the angle-modulated wave, whereupon an expansion circuit accomplishes a variable control operation. A middle frequency band and/or a high frequency band component of the demodulated signal is attenuated in accordance with the level thereof. A circuit is operated in response to the output of the detection circuit to stop a variable expansion control operation of the expansion circuit and imparts a specific attenuation characteristic to a signal passing through the expansion circuit.
摘要翻译： 多声道记录盘重放系统包括用于解调从多声道记录盘拾取的角度调制波的电路。 电路检测角度调制波的异常现象，由此扩展电路实现可变控制操作。 解调信号的中频带和/或高频带分量根据其电平被衰减。 响应于检测电路的输出来操作电路以停止扩展电路的可变扩展控制操作，并且对通过扩展电路的信号赋予特定的衰减特性。
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公开(公告)号：US3934087A
公开(公告)日：1976-01-20
申请号：US403635
申请日：1973-10-04
申请人： Nobuaki Takahashi , Yoshiki Iwasaki , Masao Kasuga , Yasuo Itoh
发明人： Nobuaki Takahashi , Yoshiki Iwasaki , Masao Kasuga , Yasuo Itoh
摘要： A system for demodulating angle modulated waves comprises a phase locked loop including a phase comparator and a voltage controlled oscillator. An attenuation means is inserted into the phase locked loop. This attenuation means does not affect the DC component of an input angle modulated wave, but does cause an attenuation with respect to an AC component, to cause a decrease in the loop gain. The phase locked loop has a DC lock range exhibiting a relatively wide lock range width even when the input level is relatively low and an AC lock range produced by the attenuation circuit and exhibiting a relatively narrow lock range width when the input level is relatively low. The attenuation means detects an abnormality in the angle modulated wave, the harmonics component of the direct wave, and the like. A variable attenuation circuit controlled by the output of the detecting means is varied in its attenuation quantity.
摘要翻译： 用于解调角度调制波的系统包括包括相位比较器和压控振荡器的锁相环。 衰减装置插入到锁相环中。 该衰减装置不影响输入角调制波的直流分量，但是相对于AC分量产生衰减，导致环路增益的降低。 即使当输入电平相对较低时，锁相环也具有相对宽的锁定范围宽度的DC锁定范围，并且当输入电平相对较低时，锁相环由衰减电路产生并产生相对窄的锁定范围宽度。 衰减装置检测角度调制波的异常，直接波的谐波分量等。 由检测装置的输出控制的可变衰减电路的衰减量变化。
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公开(公告)号：US4186281A
公开(公告)日：1980-01-29
申请号：US843863
申请日：1977-10-20
申请人： Masao Kasuga , Nobuaki Takahashi , Fujio Suzuki , Yoshiki Iwasaki
发明人： Masao Kasuga , Nobuaki Takahashi , Fujio Suzuki , Yoshiki Iwasaki
CPC分类号： H04S3/006
摘要： A multichannel record disc reproducing apparatus comprises a first phase locked loop circuit including a phase comparator and a voltage controlled oscillator for demodulating an angle-modulated wave signal. The modulated signal is separated from a composite signal picked up from a multichannel record disc on which a multiplexed direct wave signal and an angle-modulated wave signal are recorded. The output of the first phase locked loop is a demodulated signal. A second phase locked loop circuit includes a phase comparator and a voltage controlled oscillator, supplied with the separated angle-modulated wave signal and having a lock range of a width which covers and is wider than the maximum lock range width of the first phase locked loop circuit. A synchronous detector compares the phases of the angle-modulated wave signal and the output signal of voltage controlled oscillator of the second phase locked loop. The synchronous detector operates when the phase difference of the two signals deviates sufficiently from a predetermined phase difference. Means are provided for reducing or removing noise components which are developed in the demodulated signal in accordance with the output of the synchronous detector. This noise reduction or removal is provided in the first phase locked loop circuit and/or in a channel for transmitting the demodulated signal.
摘要翻译： 多通道记录盘重放装置包括第一锁相环电路，其包括用于解调角度调制波信号的相位比较器和压控振荡器。 调制信号与从其上记录有多路复用直接波信号和角度调制波信号的多通道记录盘拾取的复合信号分离。 第一锁相环的输出是解调信号。 第二锁相环电路包括相位比较器和压控振荡器，被提供有分离的角度调制波信号并且具有覆盖并且比第一锁相环的最大锁定范围宽度宽的宽度的锁定范围 电路。 同步检波器将角度调制波信号的相位与第二锁相环的压控振荡器的输出信号进行比较。 当两个信号的相位差从预定的相位差充分偏离时，同步检测器工作。 提供了用于根据同步检测器的输出减少或去除在解调信号中产生的噪声分量的装置。 在第一锁相环电路和/或用于发送解调信号的信道中提供该噪声降低或去除。
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公开(公告)号：US4633329A
公开(公告)日：1986-12-30
申请号：US537529
申请日：1983-09-30
申请人： Hiroyuki Sugiyama , Nobuaki Takahashi , Takeshi Shibamoto , Hideo Sato , Mitsuo Kubo , Koji Tanaka , Tsuneo Furuki , Fujio Suzuki
发明人： Hiroyuki Sugiyama , Nobuaki Takahashi , Takeshi Shibamoto , Hideo Sato , Mitsuo Kubo , Koji Tanaka , Tsuneo Furuki , Fujio Suzuki
IPC分类号： H04N5/76 , G11B3/00 , G11B7/00 , G11B7/004 , G11B9/06 , G11B20/12 , H04N1/64 , H04N9/80 , H04N9/806 , H04N9/491
CPC分类号： H04N9/8066 , H04N1/646
摘要： An information signal recording medium has a spiral track on which an information signal is recorded. The information signal includes picture element data which correspond to one field, and is time-sequentially recorded on the spiral track in terms of the picture element data which correspond to one field. The picture element data which correspond to one field are made up of a plurality of picture element data of a first field and a plurality of picture element data of a second field, among picture element data which are obtained by subjecting an analog video signal to a digital pulse modulation, where the analog video signal corresponds to one frame made up of the first and second fields. A reproducing apparatus is designed to reproduce the second field in a sequence different from a sequence with which the recorded picture element data are reproduced from the information recording medium in the first field.
摘要翻译： 信息信号记录介质具有在其上记录有信息信号的螺旋轨迹。 信息信号包括对应于一个场的图像元素数据，并且对于与一个场相对应的像素数据，被时间顺序地记录在螺旋轨道上。 对应于一个场的像素数据由图像元素数据中的第一场和多个像素数据的多个图像元素数据构成，该像素数据是通过使模拟视频信号 数字脉冲调制，其中模拟视频信号对应于由第一和第二场组成的一帧。 再现装置被设计为以与在第一场中的信息记录介质再现记录的像素数据的顺序不同的顺序再现第二场。
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公开(公告)号：US4513327A
公开(公告)日：1985-04-23
申请号：US478455
申请日：1983-03-24
CPC分类号： H04N9/804
摘要： A digital signal recording system and a reproducing apparatus for reproducing signals recorded according to this recording system comprise a circuit for alternately transmitting a first digital luminance signal and a first two kinds of digital color difference signals obtained by subjecting a color picture information signal to digital pulse modulation, in terms of information of one or a plurality of scanning lines, and producing a first digital video signal having a signal format wherein signal components of two sampling points of the first digital luminance signal are arranged within the same word and signal components of the same sampling point on a picture of the first two kinds of digital color difference signals are arranged within the same word; a circuit for time-sequentially multiplexing the first digital video signal and the digital audio signals obtained by subjecting audio information signal to be recorded to digital pulse modulation, in terms of words, and recording the time-sequentially multiplexed signal onto the same one track on a recording medium; a decoder for demodulating and reproducing analog audio signals from a signal picked up and reproduced from the recording medium; and a circuit for producing an analog video signal in accordance with a standard television system, from the output first digital video signal of the decoder.
摘要翻译： 用于再现根据该记录系统记录的信号的数字信号记录系统和再现装置包括用于交替发送第一数字亮度信号和通过使彩色图像信息信号经受数字脉冲而获得的前两种数字色差信号的电路 根据一条或多条扫描线的信息进行调制，并产生具有信号格式的第一数字视频信号，其中第一数字亮度信号的两个采样点的信号分量被布置在相同的字和信号分量 前两种数字色差信号的图像上的相同采样点排列在同一个字内; 用于对第一数字视频信号进行时间顺序多路复用的电路和通过使音频信息信号被记录在数字脉冲调制方面获得的数字音频信号，并将时间顺序复用的信号记录在相同的一个磁道上 记录介质; 解码器，用于从记录介质拾取和再现的信号中解调和再现模拟音频信号; 以及根据解码器的输出第一数字视频信号产生根据标准电视系统的模拟视频信号的电路。
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8.发明授权Rotary recording medium having track turns recorded with digital signal and track turns recorded with analog signal 失效具有记录有数字信号的轨道匝数的旋转记录介质和用模拟信号记录的轨道匝数
公开(公告)号：US4660099A
公开(公告)日：1987-04-21
申请号：US609193
申请日：1984-05-11
申请人： Hiroyuki Sugiyama , Nobuaki Takahashi , Takeshi Shibamoto , Kazunori Nishikawa , Shoji Ueno , Makoto Komura , Shunichi Shichijo
发明人： Hiroyuki Sugiyama , Nobuaki Takahashi , Takeshi Shibamoto , Kazunori Nishikawa , Shoji Ueno , Makoto Komura , Shunichi Shichijo
摘要： A rotary recording medium has information signals recorded on a spiral or concentric tracks formed thereon as variations in geometrical configuration. The tracks comprise a mixture of digital recorded tracks which are recorded with a first modulated signal and analog recorded tracks which are recorded with a second modulated signal. The first modulated signal is a digital signal which has been time-sequentially multiplexed in terms of blocks at a transmission frequency of 44.1 kHz or a frequency extremely close to 44.1 kHz and has then been subjected to a modulation, where each of the blocks are constituted by a synchronizing signal, error correcting codes, and an error detecting code, which are added to a plurality of channels of digital data which are digitally modulated information signals. The second modulated signal is an analog modulated analog information signal at least including a composite video signal. A number of blocks recorded in one track turn of the digital recorded tracks is approximately equal to a product of the transmission frequency and a duration of one revolution of the rotary recording medium.
摘要翻译： 旋转记录介质具有记录在其上形成的螺旋或同心轨迹上的信息信号，其中几何构型的变化。 轨道包括用第一调制信号记录的数字记录磁道和用第二调制信号记录的模拟记录磁道的混合。 第一调制信号是以44.1kHz的发送频率或非常接近44.1kHz的频率按照块进行时间顺序复用的数字信号，然后进行调制，其中每个块被构成 通过同步信号，纠错码和检错码，它们被加到数字数据的多个通道中，这些通道是数字调制的信息信号。 第二调制信号是至少包括复合视频信号的模拟调制模拟信息信号。 记录在数字记录轨道的一个轨迹中的多个块大致等于传输频率与旋转记录介质的一圈的持续时间的乘积。
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公开(公告)号：US4613908A
公开(公告)日：1986-09-23
申请号：US523770
申请日：1983-08-16
申请人： Nobuaki Takahashi , Seiichi Takashima , Takeshi Shibamoto , Koji Tanaka , Fujio Suzuki , Mitsuo Kubo , Mitsuru Kikuchi , Hiroyuki Sugiyama , Yoshiaki Amano
发明人： Nobuaki Takahashi , Seiichi Takashima , Takeshi Shibamoto , Koji Tanaka , Fujio Suzuki , Mitsuo Kubo , Mitsuru Kikuchi , Hiroyuki Sugiyama , Yoshiaki Amano
CPC分类号： H04N9/804 , H04N9/7925 , G11B2220/20
摘要： A digital video signal reproducing apparatus comprises a reproducing circuit for reproducing a digital video signal from a recording medium, where the recording medium is time-sequentially recorded with the digital video signal having a signal format in which a header signal is added to each of divided picture element data groups which are obtained by dividing a picture element data group in terms of a predetermined unit, the picture element data group is obtained by subjecting an analog video signal to a digital pulse modulation at a sampling frequency such that a product of a number of picture element data in one scanning line and an effective number of scanning lines in one picture of a standard television system is exceedingly close to 2.sup.18 but less than 2.sup.18, and the header signal at least comprises a synchronizing signal and a picture mode identification code, a header signal reproducing circuit for discriminating the header signal within the digital video signal reproduced by the reproducing circuit and reproducing the header signal, two memory circuits into which the picture element data group within said reproduced digital video signal is written and from which a stored picture element data group is read out, a circuit for controlling write-in and read-out with respect to the two memory circuits according to a code in the reproduced header signal, and a circuit for producing an analog video signal in accordance with a standard television system from the picture element data read out from the two memory circuits.
摘要翻译： 数字视频信号再现装置包括一个再现电路，用于从记录介质再现数字视频信号，其中记录介质被时间顺序地记录有数字视频信号，该数字视频信号具有一个信号格式，其中标题信号被添加到每个划分的信号 通过以预定单位划分图像元素数据组而获得的图像元素数据组，通过使模拟视频信号以采样频率进行数字脉冲调制获得，使得数字 一个扫描线中的图像元素数据和标准电视系统的一个图像中的有效数量的扫描线非常接近218但小于218，并且标题信号至少包括同步信号和图像模式识别码， 一个标题信号再现电路，用于鉴别该数字视频信号内的标题信号 再现电路并再现标题信号，写入所述再现的数字视频信号内的图像元素数据组并读出存储的图像元素数据组的两个存储电路，用于控制写入和读出的电路 相对于根据再现的标题信号中的代码的两个存储器电路，以及根据从两个存储器电路读出的像素数据根据标准电视系统产生模拟视频信号的电路。
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公开(公告)号：US4587558A
公开(公告)日：1986-05-06
申请号：US540553
申请日：1983-10-11
申请人： Hiroyuki Sugiyama , Nobuaki Takahashi , Takeshi Shibamoto , Hideo Sato , Yoshiaki Amano , Koji Tanaka
发明人： Hiroyuki Sugiyama , Nobuaki Takahashi , Takeshi Shibamoto , Hideo Sato , Yoshiaki Amano , Koji Tanaka
IPC分类号： G11B3/00 , G06F12/02 , G11B7/00 , G11B7/004 , G11B20/10 , G11B27/30 , G11C8/00 , H04N1/21 , H04N5/781 , H04N5/907 , H04N9/806 , H04N9/81 , H04N5/14
CPC分类号： G06F12/0207 , G11B27/3027 , H04N1/21 , H04N5/907 , H04N9/8066 , H04N9/81
摘要： An address signal generating circuit for a memory circuit comprises a first latch driver for producing a signal corresponding to upper m bits of a 2m-bit address signal which is to be generated, where m is an integer, a second latch driver for producing a signal corresponding to lower m bits of the 2m-bit address signal, a circuit for dividing a 2m-bit signal which has a predetermined value into upper m bits and lower m bits and for alternately producing signals corresponding to the upper and lower m bits, a first adder for adding the value of n bits in the signal which has the predetermined value and the value of upper n bits in an output signal of the first or second latch driver and for producing an n-bit signal, where n is an integer less than m, a second adder for adding the value of m-n bits in the signal which has the predetermined value and lower m-n bits of the output signal of the first or second latch driver and for producing an (m-n)-bit signal, an adding circuit for supplying a carry signal of the first or second adder to the second or the first adder so as to add the carry signal with another input signal of the second or the first adder, and a driver control circuit for controlling the first and second latch drivers to alternately and time-divisionally produce upper m bits of the 2m-bit address signal and lower m bits of the 2m-bit address signal by alternately latching an m-bit output signal of the first and second adders in the first and second latch drivers.
摘要翻译： 一种用于存储电路的地址信号产生电路包括：第一锁存驱动器，用于产生对应于要生成的2m位地址信号的高m位的信号，其中m是整数;第二锁存驱动器，用于产生信号 对应于2m位地址信号的较低m位，用于将具有预定值的2m位信号划分为上m位和低m位并用于交替产生对应于上m位和下m位的信号的电路， 第一加法器，用于将具有预定值的信号中的n位的值和第一或第二锁存驱动器的输出信号中的高n位的值相加，并产生n位信号，其中n是整数减去 m的第二加法器，用于将具有第一或第二锁存驱动器的输出信号的预定值和较低mn位的信号中的mn位的值相加并用于产生（mn）位信号;第二加法器， 供应 将第一或第二加法器的进位信号输入到第二加法器或第一加法器，以将进位信号与第二加法器或第一加法器的另一输入信号相加，以及驱动器控制电路，用于将第一和第二锁存驱动器控制为 通过交替地锁存第一和第二锁存驱动器中的第一和第二加法器的m位输出信号，交替地并且分时地产生2m位地址信号的高位m位和2m位地址信号的较低位。
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