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公开(公告)号：US4520401A
公开(公告)日：1985-05-28
申请号：US485054
申请日：1983-04-14
申请人： Nobuaki Takahashi , Seiichi Takashima , Takeshi Shibamoto , Fujio Suzuki , Koji Tanaka , Mitsuo Kubo , Hiroyuki Sugiyama , Yoshiaki Amano , Mitsuru Kikuchi
发明人： Nobuaki Takahashi , Seiichi Takashima , Takeshi Shibamoto , Fujio Suzuki , Koji Tanaka , Mitsuo Kubo , Hiroyuki Sugiyama , Yoshiaki Amano , Mitsuru Kikuchi
CPC分类号： H04N9/877 , H04N9/7925 , H04N9/804 , G11B2220/20
摘要： A digital video signal recording system and reproducing apparatus comprise a circuit for independently subjecting a luminance signal and two kinds of color difference signals of a color picture information to digital pulse modulation, to produce a digital luminance signal and two kinds of digital color difference signals, a circuit for dividing the digital luminance signal and the two kinds of digital color difference signals into picture element data groups, in terms of specific number of rows or columns which are adjacent on a screen, and adding a header signal at least comprising a synchronizing signal, a picture mode identification code, and a picture information quantity identification code to a beginning position of each of the divided picture element data groups comprising the digital luminance signal and the two kinds of digital color difference signals, to produce a digital video signal having a signal format in which the digital luminance, the two kinds of digital color difference signals, and the header signal are time-sequentially multiplexed, a circuit for recording the digital video signal onto a recording medium, a circuit for writing each of the divided picture element data groups picked up and reproduced from the recording medium into a memory circuit according to codes within the header signal, and a circuit for producing an analog video signal in accordance with a standard television system from picture element data read out from the memory circuit.
摘要翻译： 数字视频信号记录系统和再现装置包括用于独立地对亮度信号和彩色图像信息的两种色差信号进行数字脉冲调制的电路，以产生数字亮度信号和两种数字色差信号， 根据在屏幕上相邻的特定数量的行或列，将数字亮度信号和两种数字色差信号分割为像素数据组的电路，以及添加至少包括同步信号的标题信号 ，图像模式识别码，以及图像信息量识别码，包括数字亮度信号和两种数字色差信号的每个分割图像元素数据组的开始位置，以产生具有 信号格式其中数字亮度，两种数字色差 并且头信号被时间顺序复用，用于将数字视频信号记录到记录介质上的电路，用于将从记录介质拾取和再现的每个划分的图像元素数据组写入存储电路的电路 根据标题信号中的代码，以及根据从存储器电路读出的图像元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：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：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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4.发明授权System for recording and reproducing time-division multiplexed digital audio and video signals 失效用于记录和再现时分复用数字音视频信号的系统
公开(公告)号：US4488182A
公开(公告)日：1984-12-11
申请号：US413824
申请日：1982-09-01
CPC分类号： H04N9/8066 , H04N1/646 , H04N9/7925
摘要： Analog primary color video signals of a still-picture converted to luminance and color difference components and converted to digital samples. The digital samples of each video component are written into a respective memory at the sampling rate and retrieved by a reading circuit at a rate lower than the sampling rate. Analog multi-channel audio signals are converted to digital samples which are time-division multiplexed with the retrieved digital samples of the video components. The multiplexed digital samples are recorded on a recording disc medium in a spiral track pattern.
摘要翻译： 将静止图像的模拟原色视频信号转换为亮度和色差分量并转换为数字样本。 每个视频分量的数字样本以采样率被写入相应的存储器中，并以读取电路以低于采样速率的速率读取。 模拟多声道音频信号被转换成与所检索的视频分量的数字样本进行时分复用的数字样本。 复用的数字样本以螺旋形轨迹图案记录在记录盘介质上。
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5.发明授权Transducer feeding mechanism in an apparatus for recording and reproducing a signal on and from a rotary recording medium 失效用于记录和再现来自旋转记录介质的信号的装置中的传感器输送机构
公开(公告)号：US4143409A
公开(公告)日：1979-03-06
申请号：US827023
申请日：1977-08-23
CPC分类号： G11B21/04
摘要： A transducer feeding mechanism in an apparatus for recording and reproducing a signal on and from a rotary recording medium by means of a transducer fed over the recording medium in the radial direction thereof comprises a rotational motive power source having a rotary shaft and a pinion provided on the shaft, a rack meshed with said pinion and fed in translational movement by the rotation of the pinion, at least two guide bars extending parallelly in the direction of feeding of the transducer, a first feeding carriage on which the rack is mounted and which is guided by one of the guide bars, biasing means provided on the first feeding carriage and functioning to contact another guide bar in an elastic manner and to urge the first feeding carriage in a direction to cause the rack to mesh further with the pinion, a second feeding carriage on which the transducer is mounted, and which is guided by said other guide bar, a guide member mounted on the second feeding carriage and contacting in a rotationally displaceable manner said one of the guide bars, and engagement means functioning to place the first and second feeding carriages in contacting engagement in the feeding direction along the guide bars and in a mutually displaceable state within a plane perpendicular to the feeding direction.
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