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1. 发明授权

US4470078A Pulse driven control circuit for moving a transducer across a rotary recording medium of pulses applied thereto 失效
标题翻译：脉冲驱动控制电路，用于使传感器跨越施加到其上的脉冲的旋转记录介质
公开(公告)号：US4470078A
公开(公告)日：1984-09-04
申请号：US246721
申请日：1981-03-23
申请人： Atsumi Hirata , Katsuyuki Mitsui , Yasutaka Koumatsu
发明人： Atsumi Hirata , Katsuyuki Mitsui , Yasutaka Koumatsu
IPC分类号： H04N5/903 , G11B9/06 , G11B21/04 , G11B21/08 , G11B21/10 , H02P7/288 , H04N5/76 , G11B21/12
CPC分类号： G11B21/085 , G11B21/04
摘要： A control circuit causes a reproducing transducer feeding motor to move the transducer radially across a disc having a video signal recorded thereon. The video signal is recorded along a spiral track, together with first, second, and third reference signals which control the transducer tracking. A feed pulse forming circuit forms a number of feed pulses according to the number of switching pulses which are generated due to the reproduction of the third reference signal. A number of kick pulses are required for shifting the reproducing transducer element from one track turn to another track turn as it moves toward a center of the rotary recording medium, with the movement occurring at a position where the third reference signal is recorded. The control circuit causes a rotation of the motor for moving the reproducing transducer along the radial direction of the disc, according to the number of feed pulses that are obtained from the feed pulse forming circuit.
摘要翻译：控制电路使得再现换能器馈送电动机沿着具有记录在其上的视频信号的盘径向移动换能器。视频信号与控制换能器跟踪的第一，第二和第三参考信号一起沿着螺旋轨道记录。馈送脉冲形成电路根据由于再现第三参考信号而产生的开关脉冲的数量形成多个馈送脉冲。当再现传感器元件沿着旋转记录介质的中心移动时，将再现传感器元件从一个轨道转向移动到另一个轨道转弯，随着运动发生在记录第三参考信号的位置，需要多个脚踏脉冲。根据从进给脉冲形成电路获得的进给脉冲的数量，控制电路使得电动机的旋转沿着盘的径向方向移动再现换能器。

2. 发明授权

US4380781A Disc-shaped recording medium reproducing apparatus 失效
标题翻译：碟形记录介质再现装置
公开(公告)号：US4380781A
公开(公告)日：1983-04-19
申请号：US244058
申请日：1981-03-16
申请人： Atsumi Hirata
发明人： Atsumi Hirata
IPC分类号： G11B19/12 , G11B17/032 , G11B19/10 , G11B5/012 , G11B5/016 , G11B5/52 , G11B23/02
CPC分类号： G11B19/10 , G11B17/032
摘要： A reproducing apparatus reproduces a disc-shaped recording medium which is accommodated within a case comprising a jacket which has a space for accommodating the disc-shaped recording medium and an opening for allowing the disc-shaped recording medium to go in and out of the jacket, and a lid member inserted through the opening of the jacket for closing the opening of the jacket, where the lid member has cutouts and ride-over parts. The reproducing apparatus comprises an inserting opening through which the case is inserted, a turntable for rotating the disc-shaped recording medium, a clamping mechanism for clamping at least one of the disc-shaped recording medium and the lid member provided at an innermost part on the opposite side from the inserting opening with respect to the turntable, a detecting mechanism for detecting whether the disc-shaped recording medium is loaded within the reproducing apparatus, a reproducing transducer for reproducing the disc-shaped recording medium placed on the turntable, a reproducing operation mechanism for moving the reproducing transducer from a waiting position to a reproducing position with respect to the disc-shaped recording medium to perform a reproducing operation, and an operating mechanism connected to the detecting mechanism and the reproducing operation mechanism and operated upon starting of the reproducing operation, for operating the reproducing operation mechanism only when operated in a state where the detecting mechanism is detecting whether a disc-shaped recording medium is loaded within the reproducing apparatus.
摘要翻译：再现装置再现一种盘形记录介质，该盘形记录介质容纳在具有用于容纳盘形记录介质的空间的外壳的壳体中，以及用于允许盘形记录介质进出外壳的开口以及通过所述护套的开口插入以封闭所述护套的开口的盖构件，其中所述盖构件具有切口和骑乘部。再现装置包括插入壳体的插入开口，用于旋转盘形记录介质的转盘，用于夹持设置在最内部的盘形记录介质和盖构件中的至少一个的夹紧机构与插入开口相对于转台的相对侧，用于检测盘形记录介质是否装载在再现装置内的检测机构，用于再现放置在转台上的盘形记录介质的再现换能器，再现用于将再现换能器从等待位置移动到相对于盘状记录介质的再现位置进行再现操作的操作机构，以及连接到检测机构和再现操作机构的操作机构，再现操作，用于操作再现操作机构只有当检测机构正在检测盘形记录介质是否装载在再现装置内的状态下操作时。

3. 发明授权

US4695904A Information signal recording disc recorded with an end signal for selectively preventing unwanted access to predetermined recorded information and disc reproducing apparatus therefor 失效
标题翻译：记录有结束信号的信息信号记录盘，用于选择性地防止对预定记录信息的不期望的访问以及用于其的盘再现装置
公开(公告)号：US4695904A
公开(公告)日：1987-09-22
申请号：US728308
申请日：1985-04-29
申请人： Tatsuya Shinyagaito , Terumasa Kuramoto , Toyotaka Machida , Kikuji Saito , Shunichi Shichijo , Tooru Yamagishi , Yoshinao Kobayashi , Kazuyoshi Ishii , Atsumi Hirata
发明人： Tatsuya Shinyagaito , Terumasa Kuramoto , Toyotaka Machida , Kikuji Saito , Shunichi Shichijo , Tooru Yamagishi , Yoshinao Kobayashi , Kazuyoshi Ishii , Atsumi Hirata
IPC分类号： G11B23/36 , G09B5/06 , G11B20/10 , G11B21/08 , G11B21/12 , G11B23/28 , G11B27/10 , G11B27/30 , G11B27/36 , H04N5/76 , G11B7/00
CPC分类号： G11B21/12 , G09B5/065 , G11B21/083 , G11B23/28 , G11B27/105 , G11B27/3054 , H04N5/7605 , G11B2220/20
摘要： An information signal recording disc comprises a first recorded region in which an information signal at least including a video signal is recorded, and a second recorded region in which an end signal is intermittently recorded. The end signal is used to forcibly and automatically return a reproducing element of a disc reproducing apparatus from a playing position to a rest position. The second recorded region is provided at a position prior to the first recorded region in a direction of a reproducing sequence of the recorded signals on the information signal recording disc. The disc reproducing apparatus comprises a detecting circuit for detecting the reproduced end signal, and a controller. The controller controls the detecting circuit so that the detecting circuit is made substantially inoperative in a state where the disc reproducing apparatus is coupled to an external device having a discriminating function.
摘要翻译：信息信号记录盘包括其中记录有至少包括视频信号的信息信号的第一记录区域和其中结束信号被间歇地记录的第二记录区域。结束信号用于强制地并且自动地将盘再现装置的再现元件从播放位置返回到静止位置。第二记录区域被设置在信息信号记录盘上的记录信号的再现顺序方向上的第一记录区域之前的位置。盘再现装置包括用于检测再现的结束信号的检测电路和控制器。控制器控制检测电路，使得检测电路在盘再现装置耦合到具有识别功能的外部装置的状态下基本上不起作用。

4. 发明授权

US4428002A Special effects video disc reproducing system for eliminating picture flicker 失效
标题翻译：特效视频光盘重放系统，用于消除图像闪烁
公开(公告)号：US4428002A
公开(公告)日：1984-01-24
申请号：US245456
申请日：1981-03-19
申请人： Atsumi Hirata
发明人： Atsumi Hirata
IPC分类号： H04N5/903 , G11B9/06 , G11B21/08 , H04N5/76
CPC分类号： G11B21/085 , Y10S358/907
摘要： In a special mode video disc reproduction system in which two identical frames of video signals are recorded for each disc revolution of spiral tracks, and further recorded with a first or a second reference signal having mutually different frequencies on a reference signal tract between adjacent tracks of the recording medium the first and second reference signals are alternately changed over and recorded on the reference signal track every one revolution of the disc, and the disc is further recorded with a third reference signal at the vertical blanking period recording positions of the corresponding recording positions on the track where the first and second reference signals are changed over. A skip pulse supplying circuit generates skip pulses for skipping the reproducing element at vertical blanking period positions opposing positions where the third reference signal is recorded on the track, upon double-speed reproduction mode in the forward direction. It generates skip pulses at two vertical blanking period positions other than the positions where the third reference signal is recorded and the vertical blanking period positions opposing these positions where the third reference signal is recorded upon triple-speed reproduction mode in the forward direction. And it generates skip pulses at three vertical blanking period positions other than the positions where the third reference signal is recorded, upon quadruple-speed reproduction mode in the forward direction. Such reproduction modes of operation eliminate undesired flicker in the reproduced picture.
摘要翻译：在特殊模式的视频盘再现系统中，其中为每个螺旋磁道的盘旋转记录了两个相同的视频信号帧，并且进一步记录了具有相互不同的频率的第一或第二参考信号，记录介质中，第一和第二参考信号交替地切换并在盘的每一周记录在参考信号轨道上，并且在相应的记录位置的垂直消隐周期记录位置处进一步记录具有第三参考信号的盘在第一和第二参考信号被切换的轨道上。跳过脉冲供给电路在向前方向的双速再现模式下，生成跳过脉冲，用于在与第三参考信号记录在轨道上相对的位置处的垂直消隐周期位置跳过再现元件。它在除了记录第三参考信号的位置之外的两个垂直消隐周期位置产生跳跃脉冲，并且在向前方向上以三倍速再现模式记录第三参考信号的这些位置的垂直消隐周期位置。并且在向前方向的四倍速再现模式下，在除了记录有第三参考信号的位置之外的三个垂直消隐周期位置产生跳跃脉冲。这种再现操作模式消除再现图像中的不期望的闪烁。

5. 发明授权

US4340907A Special reproducing system in an apparatus for reproducing video signals from a rotary recording medium 失效
标题翻译：用于再现来自旋转记录介质的视频信号的设备中的特殊再现系统
公开(公告)号：US4340907A
公开(公告)日：1982-07-20
申请号：US4813
申请日：1979-01-19
申请人： Atsumi Hirata , Kanji Kayanuma
发明人： Atsumi Hirata , Kanji Kayanuma
IPC分类号： H04N5/903 , G11B9/06 , G11B21/08 , H04N5/76
CPC分类号： G11B21/085 , G11B9/06 , H04N5/7605
摘要： A special reproducing system is applied to apparatus for reproducing a video signal from a grooveless rotary recording medium. Video signals are recorded along a spiral track with a plural number of fields recorded on every revolution of the medium. The special reproducing system comprises a reproducing element for tracing the track of the rotary recording medium and picking up the recorded signal, a tracking control mechanism for operating in response to skip pulses applied thereto to cause the reproducing element to shift to an adjacent track turn of the spiral track thereby to undergo skipping, and a skip pulse generating circuit for generating skip pulses with timings corresponding to the vertical blanking period positions of the recorded video signal, the skip pulses being of a number corresponding to an operational mode for carrying out a special reproduction differing from normal reproduction at every rotational period of the rotary recording medium, and supplying the skip pulses to the tracking control mechanism. The reproducing element is caused by the tracking control mechanism responsive to the skip pulses to skip to an adjacent track turn within the vertical blanking period of the recorded video signal.
摘要翻译：特殊的再现系统被应用于从无槽旋转记录介质再现视频信号的装置。沿着螺旋轨道记录视频信号，在介质的每转一圈记录多个场。专用再现系统包括用于跟踪旋转记录介质的轨道并拾取记录信号的再现元件，跟踪控制机构，用于响应于施加到其上的跳过脉冲而操作，以使再现元件移动到相邻轨道转弯螺旋轨迹由此进行跳跃;以及跳过脉冲发生电路，用于产生与所记录的视频信号的垂直消隐周期位置对应的定时的跳跃脉冲，跳跃脉冲是与用于执行特殊操作的操作模式相对应的数字再现与旋转记录介质的每个旋转周期的正常再现不同，并且将跳过脉冲提供给跟踪控制机构。再现元件是由跟踪控制机构引起的，该跟踪控制机制响应于跳过脉冲在所记录的视频信号的垂直消隐期内跳到相邻的轨道转弯。

6. 发明授权

US4247741A Reproducing transducer feeding device in a rotary recording medium reproducing apparatus 失效
标题翻译：在旋转记录介质再现装置中再现换能器供给装置
公开(公告)号：US4247741A
公开(公告)日：1981-01-27
申请号：US973688
申请日：1978-12-27
申请人： Kazuo Tatsuguchi , Atsumi Hirata , Tetsushi Akasaka , Kanji Kayanuma
发明人： Kazuo Tatsuguchi , Atsumi Hirata , Tetsushi Akasaka , Kanji Kayanuma
IPC分类号： H04N5/7826 , G11B7/085 , G11B21/04 , G11B21/10
CPC分类号： G11B21/04
摘要： The feeding device feeds a reproducing transducer in an apparatus for reproducing signals from a rotary recording medium having an information signal recording track formed thereon in a spiral path or concentric circular form and having reference signals recorded thereon interrelatedly with the information signal track. The reproducing transducer has a reproducing element for reproducing the information signal and the reference signals recorded on the rotary recording medium and tracking control mechanism for accomplishing tracking control so that the reproducing element traces the information signal track. The feeding device comprises a driving motor for driving the reproducing transducer in feeding travel over the rotary recording medium in the radial direction thereof, a circuit for producing a tracking control signal in response to the reference signals reproduced from the reproducing transducer and supplying the tracking control signal to the tracking control mechanism, a circuit for obtaining a DC component signal of the tracking control signal thus produced, and a circuit for controlling the driving operation of the driving motor in response to the DC component signal thus obtained.
摘要翻译：馈送装置将再现传感器馈送到用于从具有形成在其上的信息信号记录轨道的旋转记录介质再现信号的装置中，该信息信号记录轨道以螺旋路径或同心圆形形式存储，并且具有与信息信号轨道相关联的参考信号。再现换能器具有用于再现记录在旋转记录介质上的信息信号和参考信号的再现元件以及用于实现跟踪控制的追踪控制机构，使得再现元件跟踪信息信号轨道。馈送装置包括驱动电动机，用于驱动再现换能器沿其径向馈送旋转记录介质的行进;响应于从再现换能器再现的参考信号产生跟踪控制信号的电路，并提供跟踪控制信号到跟踪控制机构，用于获得如此产生的跟踪控制信号的DC分量信号的电路，以及用于根据如此获得的DC分量信号来控制驱动电动机的驱动操作的电路。

7. 发明授权

US06745166B1 Contents information recording method, contents information processing unit, contents information deciphering method, contents information deciphering unit and media thereof 有权
标题翻译：内容信息记录方法，内容信息处理单元，内容信息解密方法，内容信息解密单元及其介质
公开(公告)号：US06745166B1
公开(公告)日：2004-06-01
申请号：US09537266
申请日：2000-03-29
申请人： Takayuki Sugahara , Atsumi Hirata
发明人： Takayuki Sugahara , Atsumi Hirata
IPC分类号： G06F1760
CPC分类号： G11B20/0021 , G06F21/00 , G11B20/00086 , G11B20/00094 , G11B20/00115 , G11B20/00347 , G11B20/00528 , H04L9/0819 , H04L9/0866 , H04L2209/60
摘要： When enciphered contents information is transferred from media A to media B, enciphered key information and ID(A) of the media A are recorded as a control number of data link ID in a memory of a media control unit. The control number is attached to the enciphered contents information and duplicated to the media B with the enciphered key information. The enciphered key information read from the media B and the enciphered key information read from the media B are compared with each other. When they coincide, a differential ID (A−B) value which is a differential value between media A ID and media B ID is outputted to the media B. After the output, the enciphered key information and ID(A) recorded in the memory are deleted.
摘要翻译：当加密的内容信息从媒体A传送到媒体B时，将媒体A的加密密钥信息和ID（A）作为数据链路ID的控制号被记录在媒体控制单元的存储器中。控制编号附加到加密的内容信息，并用加密的密钥信息复制到媒体B. 从媒体B读取的加密密钥信息和从媒体B读取的加密密钥信息相互比较。当它们一致时，作为媒体A ID和媒体B ID之间的差分值的差分ID（AB）值被输出到媒体B.输出之后，记录在存储器中的加密密钥信息和ID（A）被删除。

8. 发明授权

US4510532A Rotary recording medium reproducing apparatus 失效
标题翻译：旋转记录介质再现装置
公开(公告)号：US4510532A
公开(公告)日：1985-04-09
申请号：US482064
申请日：1983-04-05
申请人： Atsumi Hirata
发明人： Atsumi Hirata
IPC分类号： H04N5/903 , G11B9/06 , G11B21/20 , G11B3/30
CPC分类号： G11B21/20
摘要： A rotary recording medium reproducing apparatus comprises a reproducing stylus for reproducing recorded signals from a rotary recording medium which is recorded with an information signal on a spiral track, by tracing over the spiral track on the rotary recording medium, a reproducing mode setting circuit for setting a reproducing mode of the reproducing apparatus to a special reproduction mode such as a quick-motion reproduction mode in which the reproducing stylus successively shifts to and traces over adjacent track turns of the spiral track and a still picture reproduction mode in which the reproducing stylus repeatedly traces over the same track turn of the spiral track, besides a normal reproduction mode in which the reproducing stylus successively and continuously traces over the spiral track, a stylus pressure control signal generating circuit for generating a stylus pressure control signal of a voltage having a magnitude in accordance with the set reproducing mode, according to the reproducing mode set by the reproducing mode setting circuit, and a stylus pressure applying circuit applied with the stylus pressure control signal generated by the stylus pressure control signal generating circuit, for applying a stylus pressure to the reproducing stylus.
摘要翻译：一种旋转记录介质再现装置，包括：再现记录笔，用于通过在旋转记录介质上的螺旋轨道上追踪，将来自旋转记录介质的记录信号再现在螺旋轨道上的信息信号，再现模式设置电路，用于设置再现装置的再现模式是特殊再现模式，例如快速再现模式，其中再现指示笔连续地移动到并跟踪螺旋形轨道的相邻轨道匝数，并且静态图像再现模式，其中重复触针重复跟踪螺旋轨道的相同轨道转弯，除了其中再现触针连续地和连续地在螺旋轨道上追迹的正常再现模式之外，还有一个触笔压力控制信号发生电路，用于产生具有幅度的电压的触笔压力控制信号根据设定的再现模式，按照t o由再现模式设置电路设置的再现模式，以及触针压力施加电路，其应用由触笔压力控制信号产生电路产生的触控笔压力控制信号，以将触针压力施加到再现触笔。

9. 发明授权

US4426692A Rotary recording medium having an improved three frequency pickup tracking control and reproducing apparatus therefor 失效
标题翻译：旋转记录介质具有改进的三个频率拾取跟踪控制和再现装置
公开(公告)号：US4426692A
公开(公告)日：1984-01-17
申请号：US232222
申请日：1981-02-06
申请人： Atsumi Hirata
发明人： Atsumi Hirata
IPC分类号： G11B15/087 , G11B9/06 , G11B17/00 , G11B21/02 , G11B21/08 , G11B21/12 , G11B27/32 , G11B21/10
CPC分类号： G11B21/02 , G11B17/005 , G11B21/12 , G11B27/32 , G11B9/06
摘要： A rotary recording medium has at least one surface on which a spiral main track is formed with a reference signal track disposed centrally between mutually adjacent track turns. The track turns of the main track have an information signal recorded thereon. First and second reference signals are recorded alternately on the reference signal track, and a third reference signal is recorded at changeover positions on the recording medium. The three reference signals control a pickup guiding servo system. To identify specific places on the recorded disc, the third reference signal is recorded during extra long periods, with identification being made on a basis of the lengths of those long periods.
摘要翻译：旋转记录介质具有至少一个表面，在该表面上形成螺旋形主轨道，该基准信号轨道位于相互相邻的轨道匝之间的中心。主轨道的轨迹具有记录在其上的信息信号。第一和第二参考信号被交替地记录在参考信号轨道上，并且第三参考信号被记录在记录介质上的切换位置处。三个参考信号控制拾取引导伺服系统。为了识别记录光盘上的特定位置，第三参考信号在超长时间段内被记录，并且基于这些长周期的长度进行识别。

10. 发明授权

US4383309A Disc-shaped recording medium reproducing apparatus 失效
公开(公告)号：US4383309A
公开(公告)日：1983-05-10
申请号：US244674
申请日：1981-03-17
申请人： Atsumi Hirata
发明人： Atsumi Hirata
IPC分类号： G11B17/049 , G11B17/032 , G11B17/04 , G11B19/28 , G11B21/02
CPC分类号： G11B17/049 , G11B17/032 , G11B19/28 , G11B21/02
摘要： A reproducing apparatus reproduces a disc-shaped recording medium which is accommodated within a case comprising a jacket which has a space for accommodating the disc-shaped recording medium and an opening for allowing the disc-shaped recording medium to go in and out of the jacket, and a lid member inserted through the opening of the jacket for closing the opening of the jacket, where the lid member having cutouts and ride-over parts. The reproducing apparatus comprises an inserting opening through which the case is inserted, a turntable for rotating the disc-shaped recording medium, a clamping mechanism for clamping at least one of the disc-shaped recording medium and the lid member provided at an innermost part on the opposite side from the inserting opening with respect to the turntable, a lowering and raising mechanism for lowering the disc-shaped recording medium to a position where the disc-shaped recording medium is placed on the turntable from a clamping position where the disc-shaped recording medium is clamped by the clamping mechanism upon starting of the reproduction and raising the disc-shaped recording medium to the clamping position from the turntable upon finishing or discontinuing of the reproduction, a reproducing transducer for reproducing the disc-shaped recording medium placed on the turntable, moving mechanism for moving the reproducing transducer from a waiting position to a reproducing position with respect to the disc-shaped recording medium, a driving source for operating the moving mechanism, a mechanism for rotating the turntable after the disc-shaped recording medium is lowered and placed onto the turntable, and controlling mechanism for controlling the driving source to operate the moving mechanism at a speed selected from among a high speed, semi-high speed, and fast speed (where the high speed is the fastest speed, the semi-high speed is the second fastest speed, and the fast speed is the third fastest speed, and the fast speed is faster than the moving speed of the moving mechanism upon a quick-motion reproduction) according to the operation mode of the reproducing apparatus.

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