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1. 发明授权

US4580255A Servo circuit for a signal reproducing apparatus 失效
标题翻译：用于信号再现装置的伺服电路
公开(公告)号：US4580255A
公开(公告)日：1986-04-01
申请号：US499245
申请日：1983-05-31
申请人： Shigeki Inoue , Takao Arai , Yukio Fukui , Takashi Takeuchi , Harushige Nakagaki , Masafumi Nakamura , Tatsuo Baba
发明人： Shigeki Inoue , Takao Arai , Yukio Fukui , Takashi Takeuchi , Harushige Nakagaki , Masafumi Nakamura , Tatsuo Baba
IPC分类号： G11B7/09 , G11B19/04 , G11B20/10 , G11B21/10 , G11B7/00
CPC分类号： G11B21/106 , G11B19/04 , G11B20/10 , G11B7/0941 , G11B7/0945 , G11B7/0948
摘要： A servo circuit for a signal reproducing apparatus for reproducing signals from a record medium such as a disc utilizing an optical pickup, wherein a variable gain amplifier is arranged in a servo loop between a pickup and an actuator so that the pickup is caused to track a signal track in accordance with a servo error signal produced by the variable gain amplifier. A playback condition of a disc is discriminated by detecting the number of errors in a signal reproduced from a recorded signal on the disc by the pickup, and a gain of the variable gain amplifier is controlled by the discrimination output so that the variation of the servo error signal caused by a difference in reflectance between individual discs is eliminated and a loop gain appropriate to an individual disc is automatically set.
摘要翻译：一种用于信号再现装置的伺服电路，用于使用光学拾取器从诸如盘的记录介质再现信号，其中可变增益放大器布置在拾取器和致动器之间的伺服环路中，使得拾取器跟踪根据由可变增益放大器产生的伺服误差信号的信号轨迹。通过由拾取器检测从盘上的记录信号再现的信号中的错误数来识别盘的重放条件，并且通过鉴别输出来控制可变增益放大器的增益，使得伺服消除由各个光盘之间的反射率差引起的误差信号，并且自动设置适合于单个光盘的环路增益。

2. 发明授权

US5532835A Tracking control in apparatus for fast reproducing digital information signal from magnetic tape 失效
标题翻译：用于从磁带快速再现数字信息信号的设备中的跟踪控制
公开(公告)号：US5532835A
公开(公告)日：1996-07-02
申请号：US441703
申请日：1995-05-15
申请人： Harushige Nakagaki , Naozumi Sugimura , Takao Arai , Yasunori Ohara
发明人： Harushige Nakagaki , Naozumi Sugimura , Takao Arai , Yasunori Ohara
IPC分类号： G11B15/18 , G11B15/467 , G11B27/00 , G11B27/30 , H04N5/7826 , H04N5/783 , H04N9/82 , H04N5/76 , G11B5/55 , G11B15/46 , H04N5/78
CPC分类号： H04N5/783 , G11B15/1875 , G11B15/4672 , G11B15/4675 , G11B27/005 , G11B27/3027 , G11B2220/90 , H04N5/78263 , H04N9/8227
摘要： The helical scan reproducing apparatus for magnetically recorded digital information signal reproduces the digital information from the magnetic tape wrapped around the rotary cylinder. The digital information signal is recorded on a plurality of recorded tracks of the magnetic tape. The magnetic heads of the rotary cylinder scan the recorded tracks to reproduce the digital information signal. The reproducing apparatus has the standard playback mode in which it is operated to reproduce at the standard speed and the fast playback mode in which it is operated to reproduce at a higher speed than the standard speed. The tracking control in the reproducing apparatus controls the speed of the magnetic tape so that in the fast playback mode the magnetic heads precisely trace the particular regions of the tracks which particular regions have data for fast playback mode recorded. Each of the tracks is divided into a plurality of blocks. Each of the blocks has recorded therein the digital information signal and an identification signal formed of a track number for indicating the corresponding track and a block number for indicating the corresponding block. At least one particular block of the blocks on each track has the digital information signal recorded for the fast playback mode. The particular blocks are dispersedly arranged over the plurality of tracks in such a manner that in the fast playback mode the magnetic heads scan the particular blocks along their scan path on the magnetic tape.
摘要翻译：用于磁记录数字信息信号的螺旋扫描再现装置从缠绕在旋转圆筒上的磁带再现数字信息。数字信息信号被记录在磁带的多个记录轨道上。旋转圆筒的磁头扫描记录的磁道以再现数字信息信号。再现装置具有标准重放模式，其中以标准速度和快速重放模式操作以再现速度比标准速度更高的速度再现。再现装置中的跟踪控制控制磁带的速度，使得在快速重放模式中，磁头精确地跟踪特定区域的特定区域，该特定区域具有记录的快速重放模式的数据。每个轨道被分成多个块。每个块在其中记录了数字信息信号和由用于指示对应的轨道的轨道号和用于指示相应块的块号形成的识别信号。每个轨道上的块的至少一个特定块具有为快速重放模式记录的数字信息信号。特定块以这样的方式分散地布置在多个轨道上，使得在快速重放模式中，磁头沿着其在磁带上的扫描路径扫描特定块。

3. 发明授权

US5341248A Magnetic recording/reproducing apparatus having head structure for selectively recording/reproducing either of two kinds of signals containing different amounts of information 失效
标题翻译：具有用于选择性地记录/再现包含不同信息量的两种信号之一的头结构的磁记录/再现装置
公开(公告)号：US5341248A
公开(公告)日：1994-08-23
申请号：US012754
申请日：1993-02-03
申请人： Nobutaka Amada , Harushige Nakagaki , Takao Arai , Takaharu Noguchi
发明人： Nobutaka Amada , Harushige Nakagaki , Takao Arai , Takaharu Noguchi
IPC分类号： G11B5/09 , G11B5/008 , G11B5/53 , G11B15/18 , H04N5/76 , H04N5/7826 , H04N5/926 , H04N7/015 , H04N9/79 , H04N9/797 , H04N5/78
CPC分类号： H04N5/78263 , G11B15/1875 , G11B5/00878 , H04N5/926 , H04N9/7921 , H04N9/7973
摘要： A magnetic recording/reproducing apparatus is provided which includes a head structure compatible with a long-time play mode in handling either of two kinds of signals containing different amounts of information, such as a current digital picture signal and a high-definition (HD) digital picture signal in the rate of two to one at a constant number of revolutions of the drum by restricting an increase of the number of heads. In an aspect of the apparatus, four heads are arranged on the rotating drum equally 90.degree. spaced, a fifth head of an opposite azimuth is mounted close to any of those heads, the number of drum revolutions is increased to twice larger than the normal number, the current digital picture signal is recorded and reproduced for each channel by using two heads, that is, the fifth head and a head positioned 180.degree. opposite to the fifth head. On the other hand, the HD digital picture signal, containing twice as much information as the current digital picture signal, is recorded and reproduced for two channels by four heads equally 90.degree. spaced, exclusive of the fifth head. According to another aspect, eight heads are arranged on the rotating drum equally 45.degree. spaced, ninth and tenth heads of an opposite azimuth are mounted respectively close to any two heads 180.degree. opposite to each other, and the normal number of drum revolutions is used.
摘要翻译：提供一种磁记录/再现装置，其包括在处理包含不同信息量的两种信号中的任何一种的兼容长时间播放模式的头结构，例如当前数字图像信号和高清晰度（HD）通过限制磁头数量的增加，数字图像信号以鼓的转数恒定的速度为2比1。在该设备的一个方面，四个磁头在旋转滚筒上等间隔地设置90度，相对方位角的第五磁头安装在任何这些磁头附近，磁鼓的转数增加到正常数的两倍，通过使用两个头，即第五头和与第五头相对的180度的头，针对每个通道记录和再现当前数字图像信号。另一方面，包含两倍于当前数字图像信号的信息的HD数字图像信号通过四个不同于第五个头部的90度的四个头被记录和重放。根据另一方面，在旋转滚筒上平行地设置八个头部，相对方向的第九和第十个头部分别安装在彼此相对的任何两个头部180度上，并且使用正常数量的转鼓转数。

4. 发明授权

US5528574A Disk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocity 失效
标题翻译：能够提高以恒定线速度记录的光盘访问速度的磁盘重放装置
公开(公告)号：US5528574A
公开(公告)日：1996-06-18
申请号：US357978
申请日：1994-12-16
申请人： Toshifumi Takeuchi , Shigeki Inoue , Akio Fukushima , Takao Arai , Yutaka Nagai
发明人： Toshifumi Takeuchi , Shigeki Inoue , Akio Fukushima , Takao Arai , Yutaka Nagai
IPC分类号： G11B7/005 , G11B19/02 , G11B19/247 , G11B19/28 , G11B20/10 , G11B7/00
CPC分类号： G11B19/247 , G11B19/02 , G11B19/28 , G11B20/10 , G11B7/005
摘要： An optical disk reproducing apparatus for reproducing at a high access-speed an optical disk on which data has been recorded at a constant linear velocity (CLV) includes a control circuit for controlling reading of the disk recorded at a CLV to be rotated at a constant angular velocity (CAV), and a processor for changing the frequency of a reference clock to determine the processing timing of the reproduced digital signal in accordance with a transmission speed of the digital information signal picked up from the disk. A motor for driving the disk can be rotated at a constant revolution rate upon access to the disk, and thus it is possible to remove one of the factors for determining the access time in the conventional CLV type reproduction system, or the time for controlling the motor to rotate for a constant linear velocity in accordance with the position of the optical pickup.
摘要翻译：一种用于以高速存取速度再现数据以恒定线速度（CLV）记录的光盘的光盘重放装置包括控制电路，该控制电路用于控制在CLV处记录的磁盘的读数以使其以恒定的速度旋转角速度（CAV）和用于改变参考时钟的频率的处理器，以根据从盘拾取的数字信息信号的传输速度确定再现的数字信号的处理定时。用于驱动盘的电动机可以在进入盘时以恒定的转速旋转，因此可以去除用于确定常规CLV类型再现系统中的存取时间的因素之一，或者控制该时间电机根据光学拾取器的位置旋转恒定的线速度。

5. 发明授权

US4562549A Digital player using a pulse width detector 失效
标题翻译：数字播放器使用脉宽检测器
公开(公告)号：US4562549A
公开(公告)日：1985-12-31
申请号：US434058
申请日：1982-10-13
申请人： Hiromichi Tanaka , Hiroyuki Kimura , Tsutomu Noda , Takao Arai , Masaharu Kobayashi , Shigeki Inoue
发明人： Hiromichi Tanaka , Hiroyuki Kimura , Tsutomu Noda , Takao Arai , Masaharu Kobayashi , Shigeki Inoue
IPC分类号： G01R29/027 , G11B19/28 , G11B20/10 , H03K5/01 , H03K5/22
CPC分类号： G11B19/28 , G01R29/0273 , G11B20/10 , Y10S388/912 , Y10S388/916
摘要： In a pulse width detector circuit, a high-level pulse width and a low-level pulse width of a digital signal derived by slicing an analog signal reproduced from a disc at a predetermined level are independently measured and maximum or minimum values thereof in a predetermined time interval are stored, and an average value, sum or difference of the maximum or minimum high-level pulse width and the maximum or minimum low-level pulse width is calculated to detect a correct pulse width of original data recorded on the disc.
摘要翻译：在脉冲宽度检测电路中，独立地测量通过将从盘再现的模拟信号以预定水平进行分片而得到的数字信号的高电平脉冲宽度和低电平脉冲宽度，并且其预定的最大值或最小值存储时间间隔，并且计算最大或最小高电平脉冲宽度与最大或最小低电平脉冲宽度的平均值，和或差，以检测记录在盘上的原始数据的正确脉冲宽度。

6. 发明授权

US06728408B1 Water-mark embedding method and system 有权
标题翻译：水印嵌入法和系统
公开(公告)号：US06728408B1
公开(公告)日：2004-04-27
申请号：US09144467
申请日：1998-09-01
申请人： Isao Echizen , Hiroshi Yoshiura , Masafumi Nakamura , Takao Arai , Toshifumi Takeuchi
发明人： Isao Echizen , Hiroshi Yoshiura , Masafumi Nakamura , Takao Arai , Toshifumi Takeuchi
IPC分类号： G06K900
CPC分类号： G06T1/0021 , G06T2201/0051 , G06T2201/0061 , H04N1/32203 , H04N1/32208 , H04N1/32229 , H04N1/32251 , H04N2201/3233 , H04N2201/327
摘要： A data embedding method and apparatus and a data reproducing method and apparatus are provided which can apply a digital watermark to various contents. Instead of embedding watermarking information in respective pixels or by using a relation between pixels, the watermarking information is embedded as a position pattern of changed pixels in the contents. Reliability comparable with conventional techniques can be obtained irrespective of a change in a smaller number of pixels for the contents.
摘要翻译：提供了可以将数字水印应用于各种内容的数据嵌入方法和装置以及数据再现方法和装置。不是将水印信息嵌入各像素中，或者通过使用像素之间的关系，水印信息被嵌入作为内容中的改变像素的位置图案。可以获得与常规技术相当的可靠性，而不管内容物的较少数量的像素的变化。

7. 发明授权

US4611335A Digital data synchronizing circuit 失效
标题翻译：数字数据同步电路
公开(公告)号：US4611335A
公开(公告)日：1986-09-09
申请号：US422190
申请日：1982-09-23
申请人： Takao Arai , Masaharu Kobayashi , Takashi Takeuchi , Eiji Okubo , Hiroshi Endoh
发明人： Takao Arai , Masaharu Kobayashi , Takashi Takeuchi , Eiji Okubo , Hiroshi Endoh
IPC分类号： G11B20/10 , G11B20/14 , H04L7/033 , H04L7/04 , H04L7/02
CPC分类号： G11B20/1403 , G11B20/10527 , H04L7/0331 , H04L7/042
摘要： A circuit for reproducing a signal associated with synchronization with a digital data signal. The digital data signal includes a combination of a plurality of pulses each having a predetermined pulse width. The reproducing circuit comprises a logic circuit for discriminating the pulse width of at least one of the plurality of pulses, an oscillator and a frequency divider connected with the oscillator and responsive to the output of the logic circuit to generate a clock signal timed with the output of the logic circuit.
摘要翻译：一种用于再现与数字数据信号同步的信号的电路。数字数据信号包括具有预定脉冲宽度的多个脉冲的组合。再现电路包括用于鉴别多个脉冲中的至少一个脉冲的脉冲宽度的逻辑电路，与振荡器连接的振荡器和分频器，并且响应逻辑电路的输出以产生与输出定时的时钟信号的逻辑电路。

8. 发明授权

US08232623B2 Semiconductor device 有权
标题翻译：半导体器件
公开(公告)号：US08232623B2
公开(公告)日：2012-07-31
申请号：US12333418
申请日：2008-12-12
申请人： Keiji Mita , Masao Takahashi , Takao Arai
发明人： Keiji Mita , Masao Takahashi , Takao Arai
IPC分类号： H01L27/102
CPC分类号： H01L29/7322 , H01L29/735 , H01L29/8618
摘要： A conventional semiconductor device has a problem that, when a vertical PNP transistor as a power semiconductor element is used in a saturation region, a leakage current into a substrate is generated. In a semiconductor device of the present invention, two P type diffusion layers as a collector region are formed around an N type diffusion layer as a base region. One of the P type diffusion layers is formed to have a lower impurity concentration and a narrower diffusion width than the other P type diffusion layer. In this structure, when a vertical PNP transistor is turned on, a region where the former P type diffusion layer is formed mainly serves as a parasite current path. Thus, a parasitic transistor constituted of a substrate, an N type buried layer and a P type buried layer is prevented from turning on, and a leakage current into the substrate is prevented.
摘要翻译：常规的半导体器件具有以下问题：当在饱和区域中使用作为功率半导体元件的垂直PNP晶体管时，产生进入衬底的漏电流。在本发明的半导体器件中，以N型扩散层为基底形成作为集电极区域的2个P型扩散层。 P型扩散层中的一个形成为具有比其他P型扩散层更低的杂质浓度和更窄的扩散宽度。在这种结构中，当垂直PNP晶体管导通时，形成前者P型扩散层的区域主要用作寄生电流路径。因此，防止由衬底，N型掩埋层和P型掩埋层构成的寄生晶体管导通，并且防止了进入衬底的漏电流。

9. 发明申请

US20080109907A1 REPRODUCING APPARATUS, RECORDING APPARATUS AND DISPLAY APPARATUS 有权
标题翻译：再生装置，记录装置和显示装置
公开(公告)号：US20080109907A1
公开(公告)日：2008-05-08
申请号：US11968883
申请日：2008-01-03
申请人： Osamu KAWAMAE , Toshifumi Takeuchi , Hiroyuki Kimura , Takao Arai , Hiroshi Yoshiura
发明人： Osamu KAWAMAE , Toshifumi Takeuchi , Hiroyuki Kimura , Takao Arai , Hiroshi Yoshiura
IPC分类号： H04L9/00
CPC分类号： H04N21/4367 , G11B20/00086 , G11B20/00188 , G11B20/00195 , G11B20/0021 , G11B20/00224 , G11B20/00304 , G11B20/00449 , G11B20/00739 , G11B20/00753 , G11B20/00768 , G11B20/00884 , H04K1/00 , H04L9/32 , H04L2209/603 , H04N5/765 , H04N5/77 , H04N5/775 , H04N5/781 , H04N5/85 , H04N5/913 , H04N9/8042 , H04N21/4405 , H04N2005/91328 , H04N2005/91335 , H04N2005/91364
摘要： A data reproducing method for a plurality of devices, for sending and receiving data by authenticating the plurality of devices with each other, said data reproducing method including: selecting, from a plurality of descrambling methods, a scrambling method corresponding to a type of said data, executing authentication by an authenticating method corresponding to the selected descrambling method, where the authenticating method is selected from a plurality of authenticating methods, and reproducing said data.
摘要翻译：一种用于多个设备的数据再现方法，用于通过彼此认证多个设备来发送和接收数据，所述数据再现方法包括：从多个解扰方法中选择与所述数据类型相对应的加扰方法通过与选择的解扰方法相对应的认证方法执行认证，其中从多种认证方法中选择认证方法，并再现所述数据。

10. 发明申请

US20070154175A1 Digital information recording-reproducing apparatus 有权
标题翻译：数字信息记录再现装置
公开(公告)号：US20070154175A1
公开(公告)日：2007-07-05
申请号：US11717708
申请日：2007-03-14
申请人： Nobutaka Amada , Takao Arai , Takaharu Noguchi , Hiroo Okamoto , Shigeru Yamazaki
发明人： Nobutaka Amada , Takao Arai , Takaharu Noguchi , Hiroo Okamoto , Shigeru Yamazaki
IPC分类号： H04N5/91
CPC分类号： G11B20/0071 , G11B5/00813 , G11B15/1875 , G11B20/00007 , G11B20/00086 , G11B20/00188 , G11B20/0021 , G11B20/00246 , G11B20/00557 , G11B20/00695 , G11B20/0084 , G11B27/3027 , G11B27/3036 , G11B2220/90 , H04N5/765 , H04N5/78263 , H04N5/919 , H04N5/9201 , H04N5/9261 , H04N5/9265
摘要： A digital information recording-reproducing apparatus which records and reproduces a digital information signal transmitted together with an additional information includes a discriminator which discriminates a type of the digital information signal based on the additional information, a recorder which generates control information based on the additional information, adds the control information to the digital information signal, and records the digital information signal having the control information added thereto, a reproducer which reproduces the recorded digital information signal recorded by the recorder, and a controller which controls reproduction based on the control information. When the discriminator discriminates the type of the digital information signal as being a specific type and the digital information signal is recorded by the recorder, the reproducer reproduces the digital information signal.
摘要翻译：记录和再现与附加信息一起发送的数字信息信号的数字信息记录再现装置包括基于附加信息鉴别数字信息信号的类型的鉴别器，基于附加信息生成控制信息的记录器将控制信息添加到数字信息信号，并且记录具有添加了控制信息的数字信息信号，再现记录器记录的记录数字信息信号的再现器和基于控制信息控制再现的控制器。当鉴别器将数字信息信号的类型鉴别为特定类型并且数字信息信号由记录器记录时，再现器再现数字信息信号。

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