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1. 发明授权

US5276664A Binarization apparatus for reproduced signal in reproduction apparatus of optical disc 失效
标题翻译：用于光盘再现装置中再现信号的二值化装置
公开(公告)号：US5276664A
公开(公告)日：1994-01-04
申请号：US783025
申请日：1991-10-25
申请人： Juichi Shikunami
发明人： Juichi Shikunami
IPC分类号： G11B7/00 , G11B7/005 , G11B20/10 , H03K5/153
CPC分类号： G11B7/005 , G11B20/10009 , G11B2007/0006
摘要： A reproducing apparatus for reproducing plural types of optical discs comprising: a comparator for digitizing a reproduced signal obtained by reproduction of a first optical disc which is to be reproduced under a first optical condition defined by a first reproducing reference under a second optical condition defined by a second reproducing reference applied to reproduction of a second optical disc having a recording density higher than that of the first optical disc, the comparing operation of the reproduced signal with a reference voltage different from that defined by the first reproducing reference; and a pulse length correction circuit for correcting a pulse length of a digital signal outputted from the comparator such that the pulse length of the digital signal is equal to another pulse length which would be obtained by digitizing another reproduced signal using the reference voltage defined by the first reproducing reference, the another reproduce signal being obtained by reproducing the first optical disc in accordance with the first reproducing reference.
摘要翻译：一种用于再现多种类型的光盘的再现装置，包括：一个比较器，用于数字化通过再现第一光盘获得的再现信号，该第一光盘将在由第一光学条件限定的第一光学条件下被再现，所述第一光学条件由第二光学条件限定，第二再现参考应用于具有高于第一光盘的记录密度的第二光盘的再现，再现信号与不同于由第一再现基准定义的参考电压的比较操作; 以及脉冲长度校正电路，用于校正从比较器输出的数字信号的脉冲长度，使得数字信号的脉冲长度等于另一个脉冲长度，该另一个脉冲长度将通过使用由第一再现参考，所述另一再现信号是通过根据第一再现参考再现第一光盘获得的。

2. 发明授权

US5006703A Reflective optical rotary encoder disc 失效
标题翻译：反光光学旋转编码盘
公开(公告)号：US5006703A
公开(公告)日：1991-04-09
申请号：US427203
申请日：1989-10-24
申请人： Juichi Shikunami , Makoto Itonaga , Kanji Kayanuma , Masakatsu Kai , Nobuaki Nakamura
发明人： Juichi Shikunami , Makoto Itonaga , Kanji Kayanuma , Masakatsu Kai , Nobuaki Nakamura
IPC分类号： G01D5/36 , G01P3/486
CPC分类号： G01D5/36 , G01P3/486
摘要： A reflective optical rotary encoder device detects an angular speed or position of a rotatable member with a light beam applied to and reflected from a reflective optical encoder disc. The reflective optical rotary encoder disc has an annular encoder track for reflecting the light beam, the encoder track being composed of an annular pattern of angularly spaced pit units each including a plurality of radially spaced arcuate pits, and a pit-free annular focus servo track for focusing the light beam onto the encoder track, the focus servo track extending along and being disposed radially substantially centrally in the annular encoder track. The reflective optical rotary encoder disc further includes at least one arcuate reference pit for reflecting the light beam to produce a reference signal, the reference bit being positioned in the focus servo track and radially aligned with one of the pit units, and an annular tracking servo pit for keeping the light beam applied thereto, the annular tracking servo pit extending along and being disposed radially substantially centrally in the annular focus servo track.
摘要翻译：反射式光学旋转编码器装置利用施加到反射型光学编码器盘并从其反射的光束来检测可旋转构件的角速度或位置。反射光学旋转编码器盘具有用于反射光束的环形编码器轨道，编码器轨道由每个包括多个径向隔开的弧形凹坑的角度间隔凹坑单元的环形图案和无凹坑的环形聚焦伺服轨道用于将光束聚焦到编码器轨道上，聚焦伺服轨道沿径向延伸并大致位于环形编码器轨道的中心。反射光学旋转编码器光盘还包括至少一个用于反射光束以产生参考信号的弧形参考凹坑，该参考点位于聚焦伺服轨道中，并且与凹坑单元之一径向对齐，并且环形跟踪伺服用于保持施加到其上的光束的凹坑，环形跟踪伺服凹坑在环形聚焦伺服轨道中沿径向大致中心地延伸。

3. 发明授权

US06718121B1 Information signal processing apparatus using a variable compression rate in accordance with contents of information signals 有权
标题翻译：根据信息信号的内容使用可变压缩率的信息信号处理装置
公开(公告)号：US06718121B1
公开(公告)日：2004-04-06
申请号：US09437814
申请日：1999-11-10
申请人： Juichi Shikunami
发明人： Juichi Shikunami
IPC分类号： H04N726
CPC分类号： H04N21/2368 , H04N19/115 , H04N19/124 , H04N19/14 , H04N19/149 , H04N19/162 , H04N19/172 , H04N19/46 , H04N19/60 , H04N21/4334 , H04N21/4341 , H04N21/4394 , H04N21/44008 , H04N21/4402 , H04N21/812
摘要： A video disk recorder is such an apparatus as to compresses a video signal contained in a television signal at a predetermined compression rate to record it on an optical disk, and then play back the recorded signal. In such a video disk recorder, the television signal being input into a signal inputting portion is then compressed by a variable-rate encoder, and then sent out to a recording/playing portion. The signal sent out to the recording/playing portion is then recorded on an optical disk. In particular, the video disk recorder has a probability calculating portion for weighting signals according to degree of importance of the contents of the television signals, and a controlling portion for varying the compression rate in compliance with the weight.
摘要翻译：视频盘记录器是以预定压缩率压缩包含在电视信号中的视频信号以将其记录在光盘上，然后再现所记录的信号的装置。在这样的视盘记录器中，输入到信号输入部的电视信号被可变速率编码器压缩，然后发送到记录/播放部分。然后将发送到记录/播放部分的信号记录在光盘上。特别地，视盘记录器具有根据电视信号的内容的重要程度对信号进行加权的概率计算部分和用于根据权重改变压缩率的控制部分。

4. 发明授权

US6038208A Information recording disc recorded with signals at two different recording densities 失效
标题翻译：以两种不同的记录密度记录信号的信息记录盘
公开(公告)号：US6038208A
公开(公告)日：2000-03-14
申请号：US930344
申请日：1997-09-30
申请人： Juichi Shikunami , Akira Nishizawa , Makoto Itonaga
发明人： Juichi Shikunami , Akira Nishizawa , Makoto Itonaga
IPC分类号： G11B7/007 , G11B7/24 , G11B20/12
CPC分类号： G11B7/0079 , G11B20/1254 , G11B7/24 , G11B2007/0006
摘要： An information recording medium provides a first signal recording area (A) on which a first data is recorded, and a second signal recording area (B) which is a signal recording area outer from the first area in the radius direction, records a second data at a density higher than that of the first data, and wherein the second data includes the same contents of information as the first data. The recording density of the second data may be 2 to 10 times that of the first data. The sampling rate, the number of quantized bits, and the number of pixels of the second data may be more than the sampling rate, the number of quantized bits, and the number of pixels of the first data, respectively. The first data may be recorded at a fixed transfer rate, and the second data may be recorded at a variable transfer rate. A music signal of an audible band may be recorded for the first data, and a music signal up to an ultrasound band other than an audible band may be recorded for the second data.
摘要翻译： PCT No.PCT / JP96 / 00830 Sec。 371日期：1997年9月30日 102（e）1997年9月30日PCT PCT 1996年3月28日PCT公布。 WO96 / 30906 PCT公开号日期1996年3月10日信息记录介质提供记录有第一数据的第一信号记录区域（A）和作为半径方向上的第一区域外的信号记录区域的第二信号记录区域（B）以比第一数据高的密度记录第二数据，并且其中第二数据包括与第一数据相同的信息内容。第二数据的记录密度可以是第一数据的记录密度的2至10倍。采样率，量化位数和第二数据的像素数可以分别大于采样率，量化位数，以及第一数据的像素数。可以以固定的传送速率记录第一数据，并且可以以可变的传送速率记录第二数据。可以记录第一数据的可听频带的音乐信号，并且可以记录直到可听频带以外的超声频带的音乐信号用于第二数据。

5. 发明授权

US5592451A Test-writing controlling method for optical disk recording device 失效
标题翻译：光盘记录装置的测试写入控制方法
公开(公告)号：US5592451A
公开(公告)日：1997-01-07
申请号：US490884
申请日：1995-06-15
申请人： Juichi Shikunami
发明人： Juichi Shikunami
IPC分类号： G11B7/004 , G11B7/125 , G11B3/90 , G11B27/36
CPC分类号： G11B7/126 , G11B7/004
摘要： A test signal is recorded on a first recording disk according to a constant linear velocity technique. The test signal is reproduced from the first recording disk. A quality of the reproduced test signal is evaluated as a function of a position on the first recording disk. An information signal is recorded on a second recording disk having first and second areas. A degree of deterioration in record quality in the first area is greater than a degree of deterioration in record quality in the second area. A recording density in the recording of the information signal on the first area is decreased below a recording density in the recording of the information signal on the second area. A degree of the decrease in the recording density is changed as a function of a position on the second recording disk in response to the evaluated quality.
摘要翻译：根据恒定线速度技术将测试信号记录在第一记录盘上。从第一记录盘再现测试信号。再现的测试信号的质量被评估为第一记录盘上的位置的函数。信息信号被记录在具有第一和第二区域的第二记录盘上。第一区域的记录质量下降程度大于第二区域的记录质量下降程度。在第一区域的信息信号的记录中的记录密度降低到在第二区域的信息信号的记录中的记录密度以下。响应于评估的质量，记录密度的减小程度作为第二记录盘上的位置的函数而改变。

6. 发明授权

US4486791A Apparatus for optically reproducing signals recorded on a rotating recording medium 失效
标题翻译：用于光学再现记录在旋转记录介质上的信号的装置
公开(公告)号：US4486791A
公开(公告)日：1984-12-04
申请号：US374781
申请日：1982-05-04
申请人： Yoshiyo Wada , Hisao Kinjo , Ichiro Ueno , Yoshihiko Honjo , Kazuo Tatsuguchi , Juichi Shikunami
发明人： Yoshiyo Wada , Hisao Kinjo , Ichiro Ueno , Yoshihiko Honjo , Kazuo Tatsuguchi , Juichi Shikunami
IPC分类号： H04N5/85 , G11B7/09 , G11B7/12 , H04N5/76 , G11B7/00
CPC分类号： H04N5/7605 , G11B7/0901 , G11B7/0938 , G11B7/12
摘要： An optical apparatus reproduces an information signal recorded as pits along track turns of a rotating recording medium. At least one kind of reference signal is recorded along and overlapping the lateral edges of the adjacent track turns of the information signal. A light source projects a first light beam onto the surface of the recording medium to simultaneously reproduce the information and reference signals. A detector responds to reflections of the projected light which includes and reproduces the information signal and the reference signal. The optical system is controlled so that the center of the light beam coincides with the centerline of the track. A circuit separates the reference signal from the total reproduced signal and produces a tracking control signal in response thereto.The optical system also projects a second light beam onto the recording medium and its reflected component is used for focus control. The depth of focus of the objective lens is substantially equal to or less than two times the pit depth, so that the focussing point of the reproduction light beam coincides with the upper surface of the rotating recording medium or the bottom surface of the pits. Thereby resulting in fine reproduction without introducing second-order harmonic distortion.
摘要翻译：光学装置沿着旋转记录介质的轨道匝再现记录为凹坑的信息信号。至少一种参考信号沿信息信号的相邻轨道匝的横向边缘记录并重叠。光源将第一光束投射到记录介质的表面上，以同时再现信息和参考信号。检测器对投影光的反射进行响应，该反射包括并再现信息信号和参考信号。控制光学系统使得光束的中心与轨道的中心线重合。电路将参考信号与总再现信号分离，并响应于此产生跟踪控制信号。

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