专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US4700241A Apparatus for recording and reproducing digital signals 失效
标题翻译：用于记录和再现数字信号的装置
公开(公告)号：US4700241A
公开(公告)日：1987-10-13
申请号：US843722
申请日：1986-03-25
申请人： Syuhei Yasuda , Hiroshi Ii , Taizo Sasada
发明人： Syuhei Yasuda , Hiroshi Ii , Taizo Sasada
IPC分类号： G11B20/14 , G11B5/008 , G11B20/10 , G11B20/22 , H03K5/00 , H04L7/033 , G11B5/09
CPC分类号： G11B20/22 , G11B20/10009 , G11B20/10527 , G11B5/00817 , H04L7/0334
摘要： An apparatus for recording and reproducing digital signals includes a detector for detecting and producing a phase data signal of a sampled point of the digital signal, a first comparator for comparing a first phase data signal at one sampling point and a second phase data signal at one previous sampling point, a second comparator for comparing a predetermined value with a phase difference between the second phase data and newly detected phase data, a condition detecting means, utilizing the results of the first and second comparators, for detecting whether two adjacent sampling points are within a reference phase period, and sampling pulse generating means for generating one sampling pulse when the two sampling points are separated by a distance equal to the reference phase period, two sampling pulses when the distance is greater than the reference phase period; and no sampling pulse when the distance is less than the reference phase period.
摘要翻译：一种用于记录和再现数字信号的装置包括用于检测和产生数字信号的采样点的相位数据信号的检测器，用于将一个采样点处的第一相位数据信号和一个采样点的第二相位数据信号进行比较的第一比较器先前采样点，用于将预定值与第二相位数据与新检测到的相位数据之间的相位差进行比较的第二比较器，利用第一和第二比较器的结果检测两个相邻采样点是否为以及采样脉冲发生装置，用于当两个采样点被分离距离等于参考相位周期的距离时产生一个采样脉冲，当距离大于参考相位周期时，产生两个采样脉冲; 当距离小于参考相位周期时，无采样脉冲。

42. 发明授权

US4698693A Audio magnetic recording and/or reproducing apparatus utilizing frequency modulation 失效
标题翻译：利用频率调制的音频磁记录和/或再现装置
公开(公告)号：US4698693A
公开(公告)日：1987-10-06
申请号：US727757
申请日：1985-04-26
申请人： Yukinobu Ishigaki , Yasuomi Namiki , Hisashige Fujiwara , Kazutoshi Hirohashi
发明人： Yukinobu Ishigaki , Yasuomi Namiki , Hisashige Fujiwara , Kazutoshi Hirohashi
IPC分类号： G11B5/02 , G11B5/035 , G11B20/06 , G11B20/22 , H04N5/95 , H04N9/802 , H04N9/835 , H04N5/782
CPC分类号： H04N9/8355 , G11B20/06 , G11B20/22 , G11B5/035 , H04N5/95 , H04N9/802
摘要： A rotary head type magnetic recording and reproducing apparatus comprises a circuit for recording and reproducing a signal on and from a magnetic recording medium by rotary heads, a circuit for obtaining a frequency modulated (FM) audio signal by frequency-modulating a carrier by an audio signal which is to be recorded, a circuit for generating a frequency drift detection signal having a constant frequency which does not exist within a frequency range occupied by the FM audio signal, a circuit for obtaining a frequency multiplexed signal by frequency-multiplexing the FM audio signal and the detection signal, a circuit for separating the FM audio signal and the detection signal from the signal reproduced by the rotary heads, a demodulating circuit for obtaining an audio signal by frequency-demodulating the separated FM audio signal, a detecting circuit for frequency-demodulating the separated detection signal and for detecting a frequency drift component, a circuit for forming a frequency drift correction signal responsive to the output of the detecting circuit, and a circuit for correcting a frequency drift component in the output audio signal of the demodulating circuit by the correction signal.
摘要翻译：一种旋转磁头式磁记录和重放装置包括用于通过旋转磁头记录和再现来自磁记录介质的信号的电路，用于通过音频对载波进行频率调制来获得调频（FM）音频信号的电路要被记录的信号，用于产生频率偏移检测信号的电路，该频率漂移检测信号具有在FM音频信号所占据的频率范围内不存在的恒定频率，用于通过对FM音频进行频率复用来获得频率复用信号的电路信号和检测信号，用于将FM音频信号和检测信号与由旋转磁头再现的信号分离的电路，用于通过频率解调分离的FM音频信号来获得音频信号的解调电路，用于频率的检测电路 - 分离检测信号和检测频率漂移分量，形成频率的电路响应于检测电路的输出的循环漂移校正信号，以及用于通过校正信号校正解调电路的输出音频信号中的频率漂移分量的电路。

43. 发明授权

US4622660A Systems and methods for signal compensation 失效
标题翻译：用于信号补偿的系统和方法
公开(公告)号：US4622660A
公开(公告)日：1986-11-11
申请号：US808211
申请日：1985-12-10
申请人： Kenneth W. Cowans , M. Owen Bennett
发明人： Kenneth W. Cowans , M. Owen Bennett
IPC分类号： G11B20/22 , H03G5/16 , G11B3/00
CPC分类号： H03G5/165 , G11B20/22
摘要： A method for correcting higher order distortion introduced in a complex multifrequency waveform by an element which introduces signal-induced nonlinearities uses a replica of the non-linear element as a part of a high gain electronic feedback circuit between the output and an input of an amplifier. The replica of the non-linear element receives the multifrequency waveform, and is driven to duplicate the non-linear effects, which are used to generate a compensating voltage which is compared to the voltage obtained from the non-linear device. The resultant difference voltage after the comparison and amplification is then closer to the original signal. Thus, in an audio system for example, distortions which are audibly apparent to the human ear but so small they are immeasurable by instrumentation can be eliminated or minimized by employing a number of replicas in the same fashion. In corollary fashion a signal that is to be processed by circuits containing non-linear elements or devices can be precompensated prior to processing.
摘要翻译：通过引入信号非线性的元件来校正在复数多频波形中引入的高阶失真的方法使用非线性元件的复制品作为放大器的输出和输入之间的高增益电子反馈电路的一部分。非线性元件的复制品接收多频波形，并被驱动以复制非线性效应，用于产生与从非线性器件获得的电压相比较的补偿电压。比较放大后的差值电压接近于原始信号。因此，在音频系统中，例如，可以通过以相同的方式采用多个副本来消除或最小化对人耳可听见但如此小的失真，这是通过仪器不可估量的。在必要的方式中，由处理包含非线性元件或器件的电路处理的信号可以在处理之前进行预补偿。

44. 发明授权

US4607360A Time-axis correcting circuit for recorded data reproducing device 失效
标题翻译：用于记录数据再现装置的时间轴校正电路
公开(公告)号：US4607360A
公开(公告)日：1986-08-19
申请号：US560093
申请日：1983-12-12
申请人： Tsutomu Fukui
发明人： Tsutomu Fukui
IPC分类号： H04N5/953 , G11B20/02 , H04N9/893 , H04N5/95 , G11B20/22
CPC分类号： H04N9/893
摘要： A time-axis correcting circuit for a recorded data reproducing device, such as a video tape player or video disc player, in which dominant and other time-axis errors are substantially completely suppressed. The reproduced signal is applied to the input of a variable delay circuit. A timing data component, such as the color burst signal, is separated from the delayed reproduced signal and applied to a flywheel oscillator, the open-loop oscillation frequency of which is set at least approximately to the frequency of a dominant time-axis error component to be suppressed. The output of the flywheel oscillator is applied through a voltage-controlled oscillator to the control input of the variable delay circuit.
摘要翻译：用于基本上完全抑制显性和其它时间轴误差的诸如录像带播放器或视频盘播放器的记录数据再现装置的时间轴校正电路。再生信号被施加到可变延迟电路的输入端。诸如色同步信号的定时数据分量与延迟的再现信号分离并施加到飞轮振荡器，该飞轮振荡器的开环振荡频率至少近似于主要时间轴误差分量的频率被压制飞轮振荡器的输出通过压控振荡器施加到可变延迟电路的控制输入。

45. 发明授权

US4550347A Method for recording information on a recording disc 失效
标题翻译：在记录盘上记录信息的方法
公开(公告)号：US4550347A
公开(公告)日：1985-10-29
申请号：US482725
申请日：1983-04-07
申请人： Shozo Nakamuta
发明人： Shozo Nakamuta
IPC分类号： G11B5/012 , G11B7/00 , G11B7/004 , G11B7/007 , G11B9/06 , G11B19/28 , G11B20/00 , G11B20/10 , G11B20/22 , G11B27/30 , H04N5/76
CPC分类号： G11B19/28 , G11B20/10 , G11B20/22 , G11B27/30 , G11B5/012 , G11B7/007 , G11B2220/20
摘要： In order to eliminate crosstalk and to provide a high recording density, a method for recording information on a recording disc includes a first step for forming a first portion of recording tracks in which the information signal is recorded on the recording disc under a condition that the angular velocity of rotation of the disc is constant and a space between each track has a first constant value. A second step in values forming a second portion of recording tracks in which the information signal is recorded on the recording disc under a condition that the angular velocity of rotation of the recording disc is varying and the space between each track has a second constant value that is greater than the first constant value. The first and the second portions of the recording tracks are formed alternately.
摘要翻译：为了消除串扰并提供高记录密度，用于在记录盘上记录信息的方法包括：第一步骤，用于形成记录轨道的第一部分，其中信息信号被记录在记录盘上，条件是盘的旋转角速度是恒定的，并且每个轨道之间的空间具有第一恒定值。形成记录轨道的第二部分的值的第二步骤，其中在记录盘的旋转角度变化并且每个轨道之间的间隔具有第二常数值的条件下将信息信号记录在记录盘上，大于第一个常数值。记录轨道的第一和第二部分交替地形成。

46. 发明授权

US4546461A Method for recording information on a recording disc 失效
标题翻译：在记录盘上记录信息的方法
公开(公告)号：US4546461A
公开(公告)日：1985-10-08
申请号：US446657
申请日：1982-12-03
申请人： Teruhiko Isobe
发明人： Teruhiko Isobe
IPC分类号： H04N5/85 , G11B3/00 , G11B5/012 , G11B7/00 , G11B7/004 , G11B7/007 , G11B9/06 , G11B19/28 , G11B20/10 , G11B20/12 , G11B20/22 , G11B27/30 , G11B19/00
CPC分类号： G11B19/28 , G11B20/10 , G11B20/22 , G11B27/30 , G11B7/007 , G11B2220/20
摘要： In order to eliminate a crosstalk component of the reproduction signal and to provide a high level of recording density, a method for recording an information signal having a synchronizing signal on a recording disc comprises a first step for forming a first portion of recording tracks in which information signal is recorded on the recording disc rotated at a constant angular velocity of rotation so that positions of the recording tracks in which the synchronizing signal is recorded are aligned in radial directions of the recording disc, and a second step for forming second portions of recording tracks in which the information signal is recorded on the recording disc under a condition that the angular velocity of the rotation thereof is varying, wherein the first and second portions of the recording tracks are formed alternately.
摘要翻译：为了消除再现信号的串扰分量并提供高水平的记录密度，用于在记录盘上记录具有同步信号的信息信号的方法包括：第一步骤，用于形成记录磁道的第一部分，其中信息信号被记录在以恒定的旋转角度旋转的记录盘上，使得记录同步信号的记录道的位置在记录盘的径向方向上对准，第二步用于形成记录的第二部分在其旋转的角速度变化的条件下，信息信号被记录在记录盘上的轨道，其中记录轨迹的第一和第二部分交替地形成。

47. 发明授权

US4536866A Information retrieval system and apparatus 失效
标题翻译：信息检索系统和设备
公开(公告)号：US4536866A
公开(公告)日：1985-08-20
申请号：US455307
申请日：1983-01-03
申请人： Jonathan A. Jerome , Frank D. Neu , Peter G. Wohlmut
发明人： Jonathan A. Jerome , Frank D. Neu , Peter G. Wohlmut
IPC分类号： G11B7/005 , G11B7/085 , G11B7/095 , G11B7/13 , G11B7/14 , G11B20/02 , G11B20/10 , G11B20/18 , G11B20/20 , G11B20/22 , G11B20/24 , H03F3/08 , G11B7/00
CPC分类号： G11B20/02 , G11B20/025 , G11B20/10 , G11B20/18 , G11B20/20 , G11B20/22 , G11B20/24 , G11B7/005 , G11B7/0857 , G11B7/0953 , G11B7/13 , G11B7/14 , H03F3/08
摘要： A system and apparatus is disclosed for retrieving analog or digital information stored on an optically sensed disc. In a preferred embodiment, a video disc is disposed between a flooding light source and a matrix array of photosensitive elements, there being provided optical focusing means so that the illuminated data tracks of the video disc are imaged onto the photosensitive array. Circuitry is provided for sensing output signals from selected elements of the array and in response thereto selecting those elements of the array onto which the selected track (or tracks) is best imaged. In this manner the apparatus of the present invention can provide data track following, conventional data retrieval and parallel simultaneous and sequential data retrieval. Alternative circuitry provides signal stream manipulation to compensate for fluctuations in rotational velocity of the data disc and to provide improved signal-to-noise ratios as well as frequency response enhancement. Other alternative circuitry permits compensation for lost data.
摘要翻译：公开了用于检索存储在光学感测盘上的模拟或数字信息的系统和装置。在优选实施例中，视频盘被设置在驱动光源和感光元件的矩阵阵列之间，提供了光学聚焦装置，使得视频盘的照明数据轨迹被成像到光敏阵列上。提供电路用于感测来自阵列的选定元件的输出信号，并响应于此选择所选择的轨道（或轨道）最佳成像的阵列的那些元件。以这种方式，本发明的装置可以提供数据跟踪，常规数据检索和并行同时和顺序数据检索。替代电路提供信号流操作以补偿数据盘的旋转速度的波动，并提供改善的信噪比以及频率响应增强。其他替代电路可以补偿丢失的数据。

48. 发明授权

US4486793A Reduction of crosstalk effects in modulated audio signals carried in adjacent tracks of recorded media 失效
标题翻译：在记录介质的相邻轨道中承载的调制音频信号中减少串扰效应
公开(公告)号：US4486793A
公开(公告)日：1984-12-04
申请号：US399235
申请日：1982-07-19
申请人： Craig C. Todd
发明人： Craig C. Todd
IPC分类号： G11B20/06 , G11B20/22 , H04N9/79 , H04N9/802 , G11B5/04 , G11B15/02
CPC分类号： G11B20/22 , H04N9/7908 , H04N9/802
摘要： This invention reduces crosstalk interference components without a significant increase in recorded bandwidth of the modulated audio signals and without a significant degradation of the signal-to-noise ratio of the reproduced audio signals. According to the invention, the nominal carrier frequency of the modulated audio signals in adjacent tracks or scans is offset by an amount sufficient to shift the crosstalk interference components outside the desired audio pass band for substantially all modulating amplitudes and frequencies. At the same time, the modulated audio frequency spectra of the adjacent tracks substantially overlap so that additional overall bandwidth requirements are minimized. A satisfactory offset from track to track is in the order of twice the maximum audio response frequency. As the offset is reduced or as occasional high frequency high amplitude audio occurs in adjacent tracks, crosstalk distortion components will tend to appear beginning at the high frequencies. Such crosstalk interference can be further reduced by the use of frequency dependent compressor-expander noise reduction because of the tendency of the interference to locate in one part of the audio band rather than across the entire audio band as in the case of no track-to-track carrier offset.
摘要翻译：本发明可减少串扰干扰成分，而不会明显增加已调音频信号的记录带宽，并且不会显着降低再生音频信号的信噪比。根据本发明，相邻轨道或扫描中的调制音频信号的标称载波频率偏移足以将基本上所有调制幅度和频率的所需音频通带外的串扰干扰分量移位的量。同时，相邻轨道的调制音频频谱基本上重叠，使得额外的总带宽要求最小化。从轨道到轨道的令人满意的偏移量是最大音频响应频率的两倍。随着偏移减小或偶尔的高频高幅度音频发生在相邻轨道中，串扰失真分量将趋于从高频开始出现。由于干扰定位在音频的一部分而不是跨越整个音频带的趋势，因此使用频率相关的压缩器 - 扩展器噪声降低可以进一步减少这种串扰干扰，如在没有跟踪的情况下轨道载波偏移。

49. 发明授权

US4422103A Device for reducing the effect of time base variations in video disc player 失效
标题翻译：用于减少视频光盘播放器中时基差异影响的设备
公开(公告)号：US4422103A
公开(公告)日：1983-12-20
申请号：US265929
申请日：1981-05-21
申请人： Hitoshi Kanamaru
发明人： Hitoshi Kanamaru
IPC分类号： H04N9/89 , G11B7/08 , G11B20/22 , G11B21/03 , H04N5/93 , H04N9/44 , H04N1/28 , H04N5/78
CPC分类号： G11B7/081 , G11B20/225 , G11B21/03 , H04N5/93
摘要： A device for eliminating time base variations in a video disc player in which a gate pulse controlled by the latest time base information is generated for preventing faulty operation during the absence of burst signals. The gate pulse is generated after a predetermined time which is proportional to a delay control signal and which starts from a leading edge of each of the horizontal synchronizing signals. A time base information pulse is generated having a width extending from the leading edge of the gate pulse to the leading edge of the specific color burst signal appearing after the leading edge of the gate pulse when color burst signals are present and having the same width as the gate pulse when the color burst signals are absent. The delay control signal and the timing pulse are generated in turn in response to a sampling pulse and the time base information pulse when the color burst signals are present and in response only to the time base information pulse when the color burst signals are absent. The sampling pulse is produced in response to the timing pulse when the color burst signals are absent and an error signal is generated in response to a reference horizontal synchronizing pulse and the sampling pulse. A servo device operates in response to the error signal to compensate for time base variations.
摘要翻译：一种用于消除视频光盘播放器中的时基差异的装置，其中产生由最新时基信息控制的门脉冲，以防止在没有突发信号的情况下的错误操作。在与延迟控制信号成比例并且从每个水平同步信号的前沿开始的预定时间之后产生门脉冲。产生时基信息脉冲，其宽度从门脉冲的前沿延伸到出现在门脉冲的前沿之后的特定色同步信号的前沿，当色同步信号存在并且具有与当色差信号不存在时的门脉冲。响应于当色同步信号存在时的采样脉冲和时基信息脉冲，并且仅当不存在色同步信号时才响应于时基信息脉冲，延迟控制信号和定时脉冲依次产生。当色同步信号不存在并且响应于参考水平同步脉冲和采样脉冲产生误差信号时，响应于定时脉冲产生采样脉冲。伺服装置响应于误差信号而工作以补偿时基差异。

50. 发明授权

US4414668A Apparatus for reproducing information signals recorded on a recording medium 失效
标题翻译：用于再现记录在记录介质上的信息信号的装置
公开(公告)号：US4414668A
公开(公告)日：1983-11-08
申请号：US279819
申请日：1981-07-02
申请人： Yoshiki Iwasaki
发明人： Yoshiki Iwasaki
IPC分类号： H04L1/00 , G11B5/012 , G11B20/10 , G11B20/18 , G11B20/22 , G06F11/10 , H04N5/80
CPC分类号： G11B20/1809 , G11B20/10009 , G11B5/012
摘要： An apparatus for reproducing information signals recorded on a recording medium comprising a pickup transducer for picking up a recorded signal from an information signal recording medium in which an analog information signal is successively recorded in units of a plurality of data blocks, the data block having a train of digital signals obtained by digitally modulating the analog information signal, error correcting words, and an error detection word, a frequency characteristic regulation circuit for regulating the frequency characteristic of the signal picked up from the information signal recording medium by the pickup transducer, an error detection circuit for detecting whether an error exists in the data block of a signal which has passed through the frequency characteristic regulation circuit, by use of the error detection word, and a control circuit for controlling the frequency characteristic regulation circuit to vary the frequency characteristic according to an output of the error detection circuit.
摘要翻译：一种用于再现记录在记录介质上的信息信号的装置，包括拾取变换器，用于从信息信号记录介质拾取记录信号，其中以多个数据块为单位连续记录模拟信息信号，该数据块具有通过数字调制模拟信息信号，纠错字和误差检测字获得的数字信号串，用于调节由拾取换能器从信息信号记录介质拾取的信号的频率特性的频率特性调节电路，用于检测通过频率特性调节电路的信号的数据块中是否存在误差的误差检测电路，以及用于控制频率特性调节电路以改变频率特性的控制电路根据输出误差检测电路。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式