-
公开(公告)号：US4516163A
公开(公告)日：1985-05-07
申请号：US508540
申请日：1983-06-28
CPC分类号： G11B20/1809 , G11B20/10 , G11B20/10527
摘要： A digital information recording system comprises a randomized digital signal forming circuit for forming a randomized digital signal by carrying out modulo-2 addition of at least digital information signals of a plurality of channels in a digital signal and a random code sequence which is generated independently, a detector for successively detecting values of each of a predetermined number of words from each of the digital information signals of a plurality of channels in the randomized digital signal, in terms of one word, and generating a detection signal only when values of bits in the one word are all "1" or all "0", a timing circuit for generating a timing signal for every period corresponding to a transmission period of a least significant bit in one word from each of the digital information signals of a plurality of channels, a polarity inverting circuit for passing the randomized digital signal unchanged during a period in which the detection signal is not generated from the detector, and inverting the polarity of the least significant bit in one word from each of the digital information signals of a plurality of channels in the randomized digital signal when simultaneously applied with the detection signal and the timing signal, and a recording circuit for recording a digital signal obtained from the polarity inverting circuit.
摘要翻译： 数字信息记录系统包括一个随机数字信号形成电路，用于通过对数字信号中的至少数个信道信号和独立产生的随机码序列至少进行模2加法来形成随机数字信号， 一个检测器，用于根据一个字连续地检测随机数字信号中的多个通道的每个数字信息信号中的每一个的预定数量的字的值，并且仅当在一个字中的位的值时产生检测信号 一个字全部为“1”或全部为“0”，定时电路用于在与多个通道的每个数字信息信号中的一个字中的最低有效位的发送周期相对应的每个周期产生定时信号， 极性反转电路，用于在不从d产生检测信号的期间内使随机数字信号不变 并且当同时施加检测信号和定时信号时，将随机数字信号中的多个通道的数字信息信号中的每一个的一个字中的最低有效位的极性反转，以及记录电路 从极性反转电路获得的数字信号。
-
公开(公告)号：US4561083A
公开(公告)日：1985-12-24
申请号：US496589
申请日：1983-05-20
申请人： Kazunori Nishikawa , Yoshiki Iwasaki , Isao Masuda , Shoji Ueno , Makoto Komura , Nobuaki Takahashi
发明人： Kazunori Nishikawa , Yoshiki Iwasaki , Isao Masuda , Shoji Ueno , Makoto Komura , Nobuaki Takahashi
CPC分类号： H04N5/956
摘要： A memory circuit write-in system comprises a first circuit for supplying a digital signal including a time base fluctuation component, where one frame of the digital signal is constituted by at least a synchronizing signal and information data and the digital signal has a first repetition frequency with a period of one frame of the digital signal, a memory circuit for writing therein and reading out therefrom the digital signal supplied from the first circuit, and a second circuit for applying a write-in control signal to the memory circuit. The write-in control signal includes no time base fluctuation component and has a second repetition frequency substantially equal to the first repetition frequency, and the memory circuit is controlled by the write-in control signal so that write-in of the digital signal is carried out with a write-in period in a range of two times within the one frame period.
摘要翻译： 存储电路写入系统包括：第一电路，用于提供包括时基波动分量的数字信号，其中数字信号的一帧至少由同步信号和信息数据构成，数字信号具有第一重复频率 具有数字信号的一帧的周期，用于在其中写入并从其读出从第一电路提供的数字信号的存储器电路，以及用于将写入控制信号施加到存储器电路的第二电路。 写入控制信号不包括时基波动分量，并且具有基本上等于第一重复频率的第二重复频率，并且存储电路由写入控制信号控制，以便承载数字信号的写入 在一个帧周期内以两次的写入周期输出。
-
3.发明授权Synchronizing signal detecting circuit in a digital signal transmitting system 失效在数字信号发送系统中同步信号检测电路
公开(公告)号：US4596981A
公开(公告)日：1986-06-24
申请号：US615237
申请日：1984-05-29
申请人： Shoji Ueno , Kazunori Nishikawa , Yoshiki Iwasaki , Isao Masuda , Makoto Komura
发明人： Shoji Ueno , Kazunori Nishikawa , Yoshiki Iwasaki , Isao Masuda , Makoto Komura
摘要： A synchronizing signal detecting circuit is used in a digital signal transmitting system which transmits a digital signal in which signals are time-sequentially multiplexed in terms of blocks, where each of the blocks are made up of digital data which are information signals subjected to a digital modulation, a synchronizing signal having a fixed pattern, and an error checking code arranged at a location separated from a location of the synchronizing signal by a predetermined number of bits. The synchronizing signal detecting circuit comprises a counter which is reset when a synchronizing signal detection output which has been discriminated as being correct by use of the error checking code is continuously obtained for N times, where N is a natural number greater than or equal to two.
摘要翻译： 在数字信号发送系统中使用同步信号检测电路，该数字信号发送系统发送数字信号，其中信号以块为单位进行时间顺序复用，其中每个块由作为经受数字信号的信息信号的数字数据组成 调制，具有固定模式的同步信号和布置在与同步信号的位置分离预定位数的位置处的错误校验码。 同步信号检测电路包括一个计数器，当通过使用错误校验码被鉴别为正确的同步信号检测输出连续获得N次时，复位，其中N是大于或等于2的自然数 。
-
公开(公告)号：US4107478A
公开(公告)日：1978-08-15
申请号：US698191
申请日：1976-06-21
申请人： Nobuaki Takahashi , Kazunori Nishikawa , Yoshiki Iwasaki , Masaaki Satoh , Katsuhiro Ohba , Shinji Nakamura , Tatsuo Sawada , Nobuhide Ohsaki , Yasuo Itoh , Nobuaki Suda , Yasuhisa Okabe , Hideaki Ozaki
发明人： Nobuaki Takahashi , Kazunori Nishikawa , Yoshiki Iwasaki , Masaaki Satoh , Katsuhiro Ohba , Shinji Nakamura , Tatsuo Sawada , Nobuhide Ohsaki , Yasuo Itoh , Nobuaki Suda , Yasuhisa Okabe , Hideaki Ozaki
CPC分类号： H03D3/244 , G11B20/00992 , G11B23/0007 , H04S3/006
摘要： An angle modulated wave demodulation system demodulates an input angle modulated wave by means of a phase locked loop system which comprises a phase comparator, which is operated responsive to an input angle modulated wave. A voltage controlled oscillator is supplied with a part of the output of the phase comparator which controls its oscillation frequency. The oscillator supplies its oscillation frequency to the phase comparator. The phase locked loop system has a lock frequency range which decreases its width when the level of the input angle modulated wave is below a predetermined level. The portion of this lock range in which the width of the lock range decreases is positively utilized. The voltage controlled oscillator oscillates at a frequency equal to the center frequency of the carrier of the input angle modulated wave, when the phase locked loop becomes unlocked.
摘要翻译： 角度调制波解调系统通过锁相环系统对输入角调制波进行解调，该锁相环系统包括响应于输入角调制波操作的相位比较器。 电压控制振荡器被提供有控制其振荡频率的相位比较器的输出的一部分。 振荡器将其振荡频率提供给相位比较器。 锁相环系统具有当输入角度调制波的电平低于预定电平时减小其宽度的锁定频率范围。 正确地利用锁定范围的宽度减小的锁定范围的部分。 当锁相环解锁时，压控振荡器的振荡频率等于输入角调制波的载波的中心频率。
-
公开(公告)号：US4667318A
公开(公告)日：1987-05-19
申请号：US543402
申请日：1983-10-19
CPC分类号： G11B20/10527 , G11B20/1809 , G11B27/105 , G11B27/3027 , G11B27/3036 , G11B27/34 , H04N1/2166 , G11B2220/20
摘要： A data producing device in a signal reproducing apparatus, comprises a shift register supplied with synchronizing signals and codes which are time-sequentially reproduced from a recording medium, synchronizing signal detectors supplied with the synchronizing signals from the shift register, data transfer circuits provided in parallel with respect to each other and in series with the synchronizing signal detectors, and a control circuit for controlling the data transfer circuits so that a data is selectively read out and produced from a desired data transfer circuit among the plurality of data transfer circuits. The reproduced synchronizing signals and codes are transferred to the shift register and are read out from the shift register in response to a clock pulse having a predetermined frequency. The number of the synchronizing signal detectors is equal to the number of kinds of the synchronizing signals, and the synchronizing signal detectors are provided in parallel with respect to each other. Each of the synchronizing signal detectors detect a specific synchronizing signal. A data in a predetermined code among the codes supplied to the data transfer circuits is transferred to the data transfer circuits, when a synchronizing signal for discriminating the predetermined code is detected in the synchronizing signal detectors and supplied to the data transfer circuits.
摘要翻译： 信号再现装置中的数据产生装置包括：移位寄存器，其提供有从记录介质被时间顺序再现的同步信号和代码，提供有来自移位寄存器的同步信号的同步信号检测器，并行提供的数据传送电路 并且与同步信号检测器串联的控制电路，以及用于控制数据传送电路的控制电路，使得从多个数据传送电路中的期望的数据传送电路选择性地读出和产生数据。 再现的同步信号和代码被传送到移位寄存器，并且响应于具有预定频率的时钟脉冲从移位寄存器读出。 同步信号检测器的数量等于同步信号的种类数，并且同步信号检测器相对于彼此并联设置。 每个同步信号检测器检测特定的同步信号。 当在同步信号检测器中检测到用于识别预定码的同步信号并提供给数据传送电路时，提供给数据传送电路的代码中的预定代码中的数据被传送到数据传送电路。
-
6.发明授权Circuit arrangement for a disk player for reproducing information prerecorded in the form of pits 失效用于再现以凹坑形式预先记录的信息的盘播放器的电路装置
公开(公告)号：US4509155A
公开(公告)日：1985-04-02
申请号：US383258
申请日：1982-05-28
CPC分类号： G11B20/10009
摘要： In a circuit arrangement for a disk player of the type arranged to reproduce information prerecorded in the form of pits, a variable gain circuit for changing the frequency characteristic of the reproduced signal is provided. The level of the reproduced signal is detected at high and low frequencies so as to produce a control signal the voltage of which varies in accordance with the difference between the level of the high frequency signal component and the level of the low frequency component. The control signal is then applied to the variable gain circuit receiving the reproduced signal so that the frequency characteristic of the reproduced signal will be controlled. Thus, the level of the reproduced signal is boosted at its high frequency range.
摘要翻译： 在用于再现以凹坑形式预先记录的信息的类型的盘播放器的电路装置中，提供了用于改变再现信号的频率特性的可变增益电路。 在高频和低频处检测再现信号的电平，以产生其电压根据高频信号分量的电平与低频分量的电平之间的差而变化的控制信号。 然后，控制信号被施加到接收再现信号的可变增益电路，从而控制再生信号的频率特性。 因此，再现信号的电平在其高频范围被提升。
-
公开(公告)号：US3983500A
公开(公告)日：1976-09-28
申请号：US502531
申请日：1974-09-03
申请人： Nobuaki Takahashi , Kazunori Nishikawa , Yoshiki Iwasaki , Masaaki Satoh , Katsuhiro Ohba , Shinji Nakamura , Tatsuo Sawada , Nobuhide Ohsaki , Yasuo Itoh , Nobuaki Suda , Yasuhisa Okabe , Hideaki Ozaki
发明人： Nobuaki Takahashi , Kazunori Nishikawa , Yoshiki Iwasaki , Masaaki Satoh , Katsuhiro Ohba , Shinji Nakamura , Tatsuo Sawada , Nobuhide Ohsaki , Yasuo Itoh , Nobuaki Suda , Yasuhisa Okabe , Hideaki Ozaki
CPC分类号： H03D3/244 , G11B20/00992 , G11B23/0007 , H04S3/006
摘要： An angle modulated wave demodulation system demodulates an input angle modulated wave by means of a phase locked loop system which comprises a phase comparator, which is operated responsive to an input angle modulated wave. A voltage controlled oscillator is supplied with a part of the output of the phase comparator which controls its oscillation frequency. The oscillator supplies its oscillation frequency to the phase comparator. The phase locked loop system has a lock frequency range which decreases its width when the level of the input angle modulated wave is below a predetermined level. The portion of this lock range in which the width of the lock range decreases is positively utilized. The voltage controlled oscillator oscillates at a frequency equal to the center frequency of the carrier of the input angle modulated wave, when the phase locked loop becomes unlocked.
-
8.发明授权Systems for recording both information and pilot signals directly on recording medium 失效用于在记录介质上直接记录信息和导频信号的系统
公开(公告)号：US4360824A
公开(公告)日：1982-11-23
申请号：US123117
申请日：1980-02-21
申请人： Nobuaki Takahashi , Kazunori Nishikawa , Isao Masuda , Hideo Sato
发明人： Nobuaki Takahashi , Kazunori Nishikawa , Isao Masuda , Hideo Sato
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0045 , G11B7/013 , G11B9/06 , G11B20/10 , G11B20/14 , G11B21/10 , G11B23/00 , G11B27/30 , H04N5/76
CPC分类号： G11B7/24085 , G11B20/10527 , G11B20/1407 , G11B20/1423 , G11B23/0007 , G11B27/30 , G11B7/0045 , G11B9/06
摘要： An information signal recording system comprises a circuit for generating pilot signals for tracking control, a circuit for generating a rectangular waveform signal of a specific frequency existing in an artificial synchronizing signal duration in every specific period and having almost no frequency component equal to and in the vicinity of the frequencies of the pilot signals, a circuit for pulse code modulating or difference modulating an information signal, further digital modulating the information signal, and obtaining a digital information signal existing in a time interval other than the artificial synchronizing signal duration. The digital information signal is recorded along a main track on a recording medium and the pilot signals are recorded along pilot signal tracks contiguous to the main track.
摘要翻译： 一种信息信号记录系统，包括用于产生用于跟踪控制的导频信号的电路，用于产生在每个特定周期中存在于人造同步信号持续时间中的特定频率的矩形波形信号的电路，并且几乎没有频率分量等于和 导频信号的频率附近，用于脉冲编码调制的电路或信息信号的差分调制，进一步对信息信号进行数字调制，以及获得以除了人造同步信号持续时间之外的时间间隔中存在的数字信息信号。 数字信息信号沿着记录介质上的主轨道记录，并且导频信号沿着与主轨道相邻的导频信号轨道记录。
-
9.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。
-
10.发明授权Rotary recording medium reproducing apparatus for reproducing pre-recorded signals from a rotary recording medium having track turns recorded with digital signal and track turns recorded with analog signal 失效旋转记录介质再现装置，用于从具有以数字信号记录的轨道匝数的旋转记录介质再现预先记录的信号，并用模拟信号记录轨迹
公开(公告)号：US4660100A
公开(公告)日：1987-04-21
申请号：US609237
申请日：1984-05-11
CPC分类号： H04N9/8066 , G11B19/28 , G11B20/10527 , G11B20/1809
摘要： A rotary recording medium reproducing apparatus comprises a reproducing circuit for picking up and reproducing pre-recorded signals from a rotary recording medium on which digital recorded tracks and analog recorded tracks coexist, a first reproducing circuit for reproducing a composite video signal having a horizontal scanning frequency of a predetermined television system from signals which are reproduced from the analog recorded tracks, among reproduced signals from the reproducing circuit, a second reproducing circuit for demodulating and reproducing original information signals from signals which are reproduced from the digital recorded tracks, among the reproduced signals from the reproducing circuit, an oscillator circuit for generating a signal having a frequency which is a natural number multiple of the horizontal scanning frequency of the predetermined television system, a servo circuit for rotating a motor which rotates the rotary recording medium, in synchronism with the output signal of the oscillator circuit, and a master clock signal generating circuit for supplying to the second reproducing circuit a signal which is obtained by frequency-multiplying the output signal of the oscillator circuit, as a master clock signal.
摘要翻译： 一种旋转记录介质再现装置，包括一个再现电路，用于从数字记录磁道和模拟记录磁道共存的旋转记录介质中拾取和再现预先记录的信号;第一再现电路，用于再现具有水平扫描频率的复合视频信号 在来自再现电路的再现信号中，从再现信号中再现的信号，从再现信号中再现的信号中再现原始信息信号的第二再现电路， 用于产生具有预定电视系统的水平扫描频率的自然数倍的频率的信号的振荡器电路，用于使与旋转记录介质旋转的电动机旋转的伺服电路 呃 振荡器电路的输出信号，以及主时钟信号发生电路，用于向第二再现电路提供通过对振荡器电路的输出信号进行倍频而获得的信号作为主时钟信号。
-
-
-
-
-
-
-
-
-
搜索结果
43 条记录 (耗时 0.03 秒)
