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1. 发明授权

US6011899A Packet data system recording time stamps and packet data on tracks formed on a storage medium in synchronism with changes in time stamp values 失效
标题翻译：分组数据系统在与时间戳值的变化同步的情况下，在存储介质上形成的轨道上记录时间戳和分组数据
公开(公告)号：US6011899A
公开(公告)日：2000-01-04
申请号：US748643
申请日：1996-11-13
申请人： Takeo Ohishi , Tsuyoshi Suzuki , Yasuaki Yamada , Tomoyuki Shindo , Yutaka Tanaka
发明人： Takeo Ohishi , Tsuyoshi Suzuki , Yasuaki Yamada , Tomoyuki Shindo , Yutaka Tanaka
IPC分类号： G11B5/008 , G11B5/09 , G11B15/087 , G11B15/12 , G11B15/18 , G11B15/467 , G11B15/473 , G11B20/10 , G11B20/12 , G11B27/032 , G11B27/10 , G11B27/30 , H04N5/44 , H04N9/804 , H04N5/92 , G11B5/00
CPC分类号： H04N21/434 , G11B15/087 , G11B15/125 , G11B15/1875 , G11B15/4671 , G11B15/4731 , G11B20/10 , G11B20/1208 , G11B27/032 , G11B27/10 , G11B27/107 , G11B27/3036 , G11B5/0086 , G11B5/00878 , G11B5/09 , H04N9/8042 , G11B2020/10592 , G11B2220/90 , H04N5/4401
摘要： A packet recording/reproducing system is provided which records or reproduces packets on or from tracks formed in time sequence on a magnetic tape. In a recording operation, the packet recording/reproducing system adds to input packets time stamps whose values are synchronous with packet arrival time control clocks produced by the system. The timing with which the packets are recorded on the magnetic tape is controlled by the arrival time control clocks so that a given number of the packets inputted at high data rate are recorded within a one-track area, a two-track area, or a one-track over area defined across at least two of the tracks, thereby minimizing the loss of capacity of the magnetic tape.
摘要翻译：提供了一种分组记录/再现系统，其在磁带上以时间顺序形成的轨道上记录或再现分组。在记录操作中，分组记录/再现系统将与系统产生的分组到达时间控制时钟的值同步的输入分组时间戳添加。数据包记录在磁带上的时间由到达时间控制时钟控制，使得以高数据速率输入的给定数量的数据包被记录在单磁道区域，双磁道区域或跨越至少两个轨道限定的单轨道区域，从而最小化磁带的容量损失。

2. 发明授权

US07027718B1 Packet data recording/reproducing system 失效
标题翻译：分组数据记录/再现系统
公开(公告)号：US07027718B1
公开(公告)日：2006-04-11
申请号：US09434161
申请日：1999-11-04
申请人： Takeo Ohishi , Tsuyoshi Suzuki , Yasuaki Yamada , Tomoyuki Shindo , Yutaka Tanaka
发明人： Takeo Ohishi , Tsuyoshi Suzuki , Yasuaki Yamada , Tomoyuki Shindo , Yutaka Tanaka
IPC分类号： H04N5/92 , G11B5/00
CPC分类号： H04N21/434 , G11B5/0086 , G11B5/00878 , G11B5/09 , G11B15/087 , G11B15/125 , G11B15/1875 , G11B15/4671 , G11B15/4731 , G11B20/10 , G11B20/1208 , G11B20/14 , G11B27/032 , G11B27/10 , G11B27/107 , G11B27/3036 , G11B2020/10592 , G11B2220/90 , H04L7/0331 , H04N5/4401 , H04N5/78263 , H04N9/7921 , H04N9/7973 , H04N9/8042
摘要： A packet recording/reproducing system is provided which records or reproduces packets on or from tracks formed in time sequence on a magnetic tape. In a recording operation, the packet recording/reproducing system adds to input packets time stamps whose values are synchronous with packet arrival time control clocks produced by the system. The timing with which the packets are recorded on the magnetic tape is controlled by the arrival time control clocks so that a given number of the packets inputted at high data rate are recorded within a one-track area, a two-track area, or a one-track over area defined across at least two of the tracks, thereby minimizing the loss of capacity of the magnetic tape.
摘要翻译：提供了一种分组记录/再现系统，其在磁带上以时间顺序形成的轨道上记录或再现分组。在记录操作中，分组记录/再现系统将与系统产生的分组到达时间控制时钟的值同步的输入分组时间戳添加。数据包记录在磁带上的时间由到达时间控制时钟控制，使得以高数据速率输入的给定数量的数据包被记录在单磁道区域，双磁道区域或跨越至少两个轨道限定的单轨道区域，从而最小化磁带的容量损失。

3. 发明授权

US5909257A Apparatus and method of receiving broadcasted digital signal 失效
标题翻译：接收广播数字信号的装置和方法
公开(公告)号：US5909257A
公开(公告)日：1999-06-01
申请号：US810994
申请日：1997-02-27
申请人： Takeo Ohishi , Tomoyuki Shindo , Yutaka Tanaka
发明人： Takeo Ohishi , Tomoyuki Shindo , Yutaka Tanaka
IPC分类号： H04N5/44 , H04N5/775 , H04N9/804 , H04N21/434 , H04N5/76
CPC分类号： H04N9/8042 , H04N21/4135 , H04N21/4344 , H04N21/4345 , H04N21/4382 , H04N5/4401 , H04N21/4325 , H04N21/4334 , H04N5/775
摘要： A digital TV broadcasting signal is demodulated to obtain a bit stream containing at least a first packet of a first program specific information concerning all TV programs conveyed by the digital TV broadcasting signal and first packets of the TV programs themselves. Selection data is entered for selecting at least one of the TV programs. In response to the selection data, only second packets are selected from among the first packets. The second packets contain only data of the selected TV program. The second packets are decoded. Further, the first packet and the second packets are output without decoding and accepted. The first program specific information is modified into a second program specific information concerning the selected at least one of the TV programs. The modification is executed after the first packet and the second packets are output. Or, the modification is executed before the first packet and the second packets are accepted.
摘要翻译：解调数字电视广播信号以获得包含关于由数字TV广播信号传送的所有电视节目和电视节目本身的第一分组的至少第一节目特定信息的第一分组的比特流。输入选择数据以选择至少一个电视节目。响应于选择数据，仅从第一分组中选择第二分组。第二个数据包仅包含所选电视节目的数据。第二个数据包被解码。此外，第一分组和第二分组被输出而不进行解码并被接受。第一节目特定信息被修改为关于所选择的至少一个电视节目的第二节目特定信息。在第一分组和第二分组被输出之后执行修改。或者，在第一分组和第二分组被接受之前执行修改。

4. 发明授权

US07146507B2 Information recording apparatus having function of encrypting information 有权
公开(公告)号：US07146507B2
公开(公告)日：2006-12-05
申请号：US10196152
申请日：2002-07-17
申请人： Tomoyuki Shindo , Takeo Ohishi
发明人： Tomoyuki Shindo , Takeo Ohishi
IPC分类号： G06F11/30 , G06F12/14 , H06F9/32 , H04N7/167
CPC分类号： G06F21/10 , G06F21/6209 , G06F21/78 , G06F2221/0797 , G06F2221/2107 , G11B20/00086 , G11B20/0021 , G11B20/00507 , H04N5/781 , H04N5/913 , H04N9/8042 , H04N21/4334 , H04N21/4408 , H04N2005/91364
摘要： First information is divided into equal-size information pieces. Serial numbers are assigned to the information pieces, respectively. An encryption key is generated from a base number and a variable number varying for each of the information pieces. The base number is common to an information range managed by one licence. The first information is encrypted on a block-by-block basis in response to the encryption key to get encryption-resultant information for every predetermined minimum information unit smaller than the sizes of the information pieces. The encryption-resultant information is recorded on a recording medium. A determination is made as to logical addresses of heads of portions of the recording medium which are loaded with portions of the encryption-resultant information corresponding to the respective information pieces. Second information representing a correspondence relation between the determined logical addresses and the assigned serial numbers is recorded on the recording medium.

5. 发明授权

US5912780A Magnetic recording and reproducing apparatus 失效
标题翻译：磁记录和再现设备
公开(公告)号：US5912780A
公开(公告)日：1999-06-15
申请号：US787771
申请日：1997-01-28
申请人： Yasuaki Yamada , Takeo Ohishi
发明人： Yasuaki Yamada , Takeo Ohishi
IPC分类号： H04N5/783 , G11B5/09 , G11B5/53 , G11B15/12 , G11B15/18 , G11B15/14
CPC分类号： G11B5/534 , G11B15/125 , G11B15/1875
摘要： A magnetic recording and reproducing apparatus has a rotary magnetic head mechanism having at least a first rotary magnetic head with a magnetic gap set to a azimuth angle less than 90 degrees in a clockwise direction with respect to a width direction of recorded traces and a second rotary magnetic head with a magnetic gap set to a azimuth angle less than 90 degrees in a counterclockwise direction with respect to the width direction. The traces are formed on a magnetic tape moving in a forward direction at a speed in accordance with a rotational locus of the heads moving and obliquely crossing a travel direction of the tape. The first output signals obtained by the first head are selected in the case where a rotational locus surface of the heads changes in a reproduction operation within an angular range less than 180 degrees in a clockwise direction with respect to the traces formed on the tape. On the other hand, the second output signals obtained by the second head are selected in the case where the rotational locus surface of the heads changes in the reproduction operation within an angular range less than 180 degrees in a counterclockwise direction with respect to the direction of the traces formed on the tape. Reproduction is executed in response to the selected first or second output signals while the tape is being moved in the forward direction or a reverse direction at a speed higher than that while recording.
摘要翻译：一种磁记录和再现装置具有旋转磁头机构，该旋转磁头机构具有至少一个第一旋转磁头，其具有相对于所记录的轨迹的宽度方向沿顺时针方向设置为小于90度的方位角的磁隙，以及第二旋转具有相对于宽度方向在逆时针方向上设置为小于90度的方位角的磁性间隙的磁头。这些迹线形成在磁带上，该磁带以沿着磁带的移动和倾斜地穿过磁带的行进方向的磁头的旋转轨迹的速度沿向前方向移动。在头部的旋转轨迹表面相对于形成在磁带上的迹线沿顺时针方向在小于180度的角度范围内变化的情况下，选择由第一磁头获得的第一输出信号。另一方面，在第一磁头中获得的第二输出信号在再现操作中的旋转轨迹表面相对于方向的逆时针方向在小于180度的角度范围内变化的情况下被选择磁带上形成的痕迹。当磁带以比记录时高的速度在正向或反方向移动时，响应于所选择的第一或第二输出信号执行再生。

6. 发明授权

US5500679A Method and apparatus for deriving a video signal corresponding to a standard definition signal from a high definition signal 失效
标题翻译：用于从高清晰度信号导出与标准清晰度信号对应的视频信号的方法和装置
公开(公告)号：US5500679A
公开(公告)日：1996-03-19
申请号：US314518
申请日：1994-09-28
申请人： Seiji Higurashi , Yasuhiko Teranishi , Yasuaki Yamada , Takeo Ohishi
发明人： Seiji Higurashi , Yasuhiko Teranishi , Yasuaki Yamada , Takeo Ohishi
IPC分类号： H04N7/015 , H04N7/46 , H04N7/01
CPC分类号： H04N19/59 , H04N19/63 , H04N19/30
摘要： A standard definition (SD) corresponding image is derived from a high definition (HD) image by performing a vertical line sub-sampling for every field with a ratio of an N:1, where N is an odd number greater than 1. One of the simple sub-sampling methods, the pyramidal coding method and the sub-band coding method may be used. For first fields, every third line is derived. For the remaining fields, every third line positioned at the center of the lines derived from the first field is derived by taking positional relation thereof on a reproduced image screen into consideration. As a result, it is possible to obtain an SD corresponding image having an unbroken interlace structure.
摘要翻译：通过对N = 1的比例为N的每个场进行垂直线次采样从高分辨率（HD）图像导出标准清晰度（SD）对应图像，其中N是大于1的奇数。可以使用简单的子采样方法，金字塔编码方法和子带编码方法。对于第一个字段，每三行都派生出来。对于剩余的场，考虑到在再现的图像屏幕上的位置关系，导出位于从第一场导出的线的中心的每三行。结果，可以获得具有不间断隔行扫描结构的SD对应图像。

7. 发明授权

US07058770B2 Method and apparatus for controlling the recording of digital information, by using unit management table 失效
标题翻译：通过使用单位管理表来控制数字信息记录的方法和装置
公开(公告)号：US07058770B2
公开(公告)日：2006-06-06
申请号：US10675994
申请日：2003-10-02
申请人： Yuichi Kanai , Yoshihiro Hori , Ryoji Ohno , Takeo Ohishi , Kenichiro Tada , Tatsuya Hirai , Jun Kamada
发明人： Yuichi Kanai , Yoshihiro Hori , Ryoji Ohno , Takeo Ohishi , Kenichiro Tada , Tatsuya Hirai , Jun Kamada
IPC分类号： G06F12/00
CPC分类号： G11B27/329 , G11B27/034 , G11B27/105 , G11B2220/216 , G11B2220/2516 , G11B2220/2562 , H04N5/76 , H04N5/765 , H04N5/775 , H04N5/781 , H04N5/85 , H04N5/907 , H04N9/8042
摘要： A recording area of a hard disk is managed by units. Each unit comprises physically continuous recording regions having predetermined size, and usage status of the unit is stored in an allocation unit (AU) management table. Data requiring a real time processing is stored in each unit. When the usage status of the unit is changed or modified due to the recording or deletion of data, the AU management table is updated and then information indicative of the fact that the AU management table has been updated is recorded. An apparatus where the final change is made is detected at the time the hard disk is inserted or a file system is initialized. And if the apparatus which last made the change adopts the file system which does not use the AU management table, then the table is reconfigured so as to retain the consistency of the AU management table.
摘要翻译：硬盘的记录区由单位管理。每个单元包括具有预定尺寸的物理上连续的记录区域，并且单元的使用状态被存储在分配单元（AU）管理表中。需要实时处理的数据存储在每个单元中。当由于记录或删除数据而改变或修改了单元的使用状态时，更新了AU管理表，并且记录了表示AU管理表被更新的事实的信息。在插入硬盘或初始化文件系统时检测进行最终更改的装置。如果上次进行变更的设备采用不使用AU管理表的文件系统，则重新配置表，以保持AU管理表的一致性。

8. 发明授权

US06983369B2 Authentication system, and contents-information sender and receiver 有权
标题翻译：认证系统和内容信息发送者和接收者
公开(公告)号：US06983369B2
公开(公告)日：2006-01-03
申请号：US09836325
申请日：2001-04-18
申请人： Takeo Ohishi
发明人： Takeo Ohishi
IPC分类号： H01L9/00
CPC分类号： G06F21/606 , G06F21/445 , H04L9/3247 , H04L9/3263 , H04L2209/30 , H04L2209/603
摘要： First information is sent from a contents-information receiver apparatus to a contents-information sender apparatus. The first information includes a combination of certificate information and second information for the contents-information receiver apparatus. The first information further includes a signal of a signature for the combination of the certificate information and the second information. In the contents-information sender apparatus, a determination is made as to whether the combination of the certificate information and the second information in the first information is correct or wrong in response to the signal of the signature in the first information. In the contents-information sender apparatus, the second information is extracted from the first information before being stored. The second information for the contents-information receiver apparatus is sent from the contents-information receiver apparatus to the contents-information sender apparatus. In the contents-information sender apparatus, the sent second information is collated with the stored second information.
摘要翻译：第一信息从内容信息接收装置发送到内容信息发送装置。第一信息包括证书信息和内容信息接收装置的第二信息的组合。第一信息还包括用于证书信息和第二信息的组合的签名的信号。在内容信息发送装置中，对第一信息中的签名的信号作出响应，判定第一信息中的证书信息和第二信息的组合是正确还是错误。在内容信息发送装置中，从存储前的第一信息中提取第二信息。内容信息接收装置的第二信息从内容信息接收装置发送到内容信息发送装置。在内容信息发送装置中，将发送的第二信息与存储的第二信息进行核对。

9. 发明授权

US06345079B1 Clock signal generation apparatus 有权
公开(公告)号：US06345079B1
公开(公告)日：2002-02-05
申请号：US09177633
申请日：1998-10-23
申请人： Takeo Ohishi
发明人： Takeo Ohishi
IPC分类号： H04L700
CPC分类号： H04N21/6336 , H03L7/095 , H03L7/146 , H03L7/181 , H04N21/4135 , H04N21/4305 , H04N21/6112
摘要： A clock signal generation apparatus includes a first device for extracting reference information from an input digital signal. An oscillator operates for generating a reference clock signal having a frequency depending on a control signal. A second device connected to the first device and the oscillator operates for generating the control signal to the oscillator in response to the reference clock signal generated by the oscillator and the reference information extracted by the first device, and for locking a phase of the reference clock signal to the reference information. A third device connected to the second device operates for deciding whether or not the phase of the reference clock signal is successfully locked to the reference information. A fourth device connected to the second device, a memory, and the third device operates for storing the control signal generated by the second device into the memory when the third device decides that the phase of the reference clock signal is successfully locked to the reference information. A fifth device connected to the memory, the oscillator, and the second device operates for selecting one of the control signal currently generated by the second device and the control signal stored in the memory, and for feeding the selected control signal to the oscillator.

10. 发明授权

US6011896A Method of recording various different video signals onto magnetic tape 失效
标题翻译：将各种不同的视频信号记录到磁带上的方法
公开(公告)号：US6011896A
公开(公告)日：2000-01-04
申请号：US317825
申请日：1999-05-25
申请人： Seiji Higurashi , Takeo Ohishi , Mitsuo Harumatsu
发明人： Seiji Higurashi , Takeo Ohishi , Mitsuo Harumatsu
IPC分类号： H04N5/91 , G11B5/008 , G11B15/12 , G11B15/18 , G11B20/12 , G11B27/032 , G11B27/036 , G11B27/30 , H04N5/782 , H04N5/7826 , H04N5/92 , H04N9/797 , H04N9/80 , H04N9/804 , H04N19/423 , H04N19/48 , H04N19/60 , H04N19/65 , H04N19/70 , H04N5/76 , H04N7/08
CPC分类号： H04N5/78263 , G11B15/125 , G11B15/1875 , G11B27/036 , G11B27/3027 , G11B5/0086 , G11B2220/216 , G11B2220/90 , G11B27/032 , G11B5/00878 , H04N9/7973 , H04N9/804
摘要： A method of recording video data and the accompanied sound data capable of editing the video data and sound data track by track without editing gaps is disclosed. The track format includes a first block of tracks for video data and a second block of tracks for sound data for a predetermined number of frames. Another method of selectively recording one of a plurality of kinds of video data having different amounts of data per frame or field and the accompanied sound data (NTSC and PAL for example) is provided. In this method, the video data and sound data are recorded with a recording and editing unit which is a determined by a common multiple of the selected one of kinds of video data among the amounts of data of the different kinds of video data. In NTSC method the video and sound data are receded every six frames or fields and in the PAL method, the video and sound data are recorded every 5 frames or fields, so that a track pattern having T=24 tracks including P tracks for sound data and T-P tracks for video data are recurrently recorded. The video and sound data are recorded track by track, so that video and sound data can be edited tack by track.
摘要翻译：公开了一种记录视频数据的方法和能够编辑视频数据和声音数据轨道的陪伴声音数据，而不编辑间隙。轨道格式包括用于视频数据的第一磁道块和用于预定数量帧的声音数据的第二磁道块。提供了选择性地记录每帧或场中具有不同数据量的多种视频数据之一和伴随声音数据（例如NTSC和PAL）的另一种方法。在这种方法中，视频数据和声音数据被记录在记录和编辑单元中，该记录和编辑单元是由不同种类的视频数据的数据量之中的所选视频数据中所选择的一种视频数据的公倍数确定的。在NTSC制方法中，视频和声音数据每六帧或场减去，PAL制式中，视频和声音数据每5帧或场记录一次，使得具有T = 24个轨道的轨道图案包括用于声音数据的P轨道并且用于视频数据的TP轨道被重复记录。视频和声音数据按轨道记录，从而可以通过轨道编辑视频和声音数据。

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