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1. 发明授权

US4873678A Optical head and optical information processor using the same 失效
标题翻译：光头和光信息处理器使用相同
公开(公告)号：US4873678A
公开(公告)日：1989-10-10
申请号：US130637
申请日：1987-12-09
申请人： Shigeru Nakamura , Sadatsugi Machida , Tsuyoshi Toda
发明人： Shigeru Nakamura , Sadatsugi Machida , Tsuyoshi Toda
IPC分类号： G11B7/09 , G11B7/12 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1381 , G11B11/10541 , G11B7/0908 , G11B7/0916 , G11B7/12 , G11B7/1356
摘要： An optical head and an optical information processor using the optical head include a light source, focusing device for focusing a light beam which is emitted from the light source, on an information medium, beam separator for isolating at least part of a light beam which is reflected from the information medium, from the light beam emitted from the light source, a beam splitter including a first polarized-light separating film which is illuminated with about a half of a light beam isolated by the beam separator, and a light detecting device having a first photodetector which receives a first light beam reflected from the first polarized-light separating film, and a second photodetector which receives a second light beam passing through the first polarized-light separating film, in a state that at least one of the first and second photodetectors is separated into a pair of light detecting elements, to make it possible to detect a magneto-optical signal and a focal error signal by the same optical system.
摘要翻译：使用光头的光头和光信息处理器包括：光源，用于将从光源发射的光束聚焦在信息介质上的聚焦装置;用于隔离至少部分光束的光束分离器; 从信息介质反射的从光源发射的光束，分束器包括用由分束器隔离的光束的大约一半被照射的第一偏振光分离膜;以及光检测装置，具有接收从第一偏振光分离膜反射的第一光束的第一光电检测器和接收通过第一偏振光分离膜的第二光束的第二光电检测器，处于第一和第二偏振光分离膜中的至少一个第二光电检测器被分离成一对光检测元件，以便可以通过s检测磁光信号和焦点误差信号 ame光学系统。

2. 发明授权

US5016234A Two-laser collimated beam optical head with monitor 失效
标题翻译：双激光准直光束头带显示器
公开(公告)号：US5016234A
公开(公告)日：1991-05-14
申请号：US209982
申请日：1988-06-22
申请人： Shigeru Nakamura , Sadatsugi Machida , Takeshi Nakao , Masahiro Ojima
发明人： Shigeru Nakamura , Sadatsugi Machida , Takeshi Nakao , Masahiro Ojima
IPC分类号： G11B7/00 , G11B7/003 , G11B7/004 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1356
摘要： In a two-laser beam optical head including first and second signal detectors for guiding emitting beams from first and second laser sources as two spots to an information medium and detecting the reflected beams from the two spots, the optical head of the present invention has the construction wherein the two laser sources are stored in one package, the emitting beams from two laser sources can be rotated together with a collimate lens with the optical axis of the collimate lens being the center in order to enable the two spots around the optical axis of a focusing lens as the center and the direction of the center line between the two spots can be changed so that the center line between the two spots is always perpendicular to the radial direction of the track on the information medium. The optical head includes further first and second radiating light power optical detectors for detecting the radiating light power of the first and second laser sources, whereby the second signal detector and at least one of the first and second radiating light power optical detector are constituted by one divided optical detector.
摘要翻译：在包括第一和第二信号检测器的双激光束光头中，第一和第二信号检测器用于将来自第一和第二激光源的光束作为两个点引导到信息介质并检测来自两个光点的反射光束，本发明的光头具有其中两个激光源存储在一个封装中，来自两个激光源的发射光束可以与准直透镜一起旋转，其中准直透镜的光轴为中心，以便能够使光轴周围的两个点可以改变作为中心的聚焦透镜和两个光点之间的中心线的方向，使得两个光点之间的中心线总是垂直于信息介质上的光道的径向方向。光头包括用于检测第一和第二激光源的辐射光功率的另外的第一和第二辐射光功率光检测器，由此第二信号检测器和第一和第二辐射光功率光检测器中的至少一个由一个分光检测器。

3. 发明授权

US06272100B1 Information recording/reproducing apparatus and method and information recording medium 失效
公开(公告)号：US06272100B1
公开(公告)日：2001-08-07
申请号：US09059977
申请日：1998-04-14
申请人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
发明人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/00454 , G11B7/006
摘要： An information recording/reproducing apparatus includes a detector circuit for detecting a state of reflection light from the recording medium, a control circuit for calculating a radiation power used for writing the information in the recording medium, in accordance with the reflection light state, a pulse generator circuit for generating record pulse information in accordance with the radiation power, and an optical driver circuit for converting the record pulse information into optical information in accordance with the radiation power and driving the optical head to record the light information into the recording medium. Accordingly, the apparatus records information by applying light from an optical head to a record area of a recording medium and changing a state of the record area and reads the information recorded in the record area.

4. 发明授权

US06671239B2 Information recording/reproducing apparatus and method and information recording medium 失效
公开(公告)号：US06671239B2
公开(公告)日：2003-12-30
申请号：US10214365
申请日：2002-08-08
申请人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
发明人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/00454 , G11B7/006
摘要： An information recording/reproducing apparatus for overwriting information by applying light from an optical head to a record area and a space of a rewritable recording medium and changing a state of the record area and for reading the information recorded in the record area. The apparatus includes a detector circuit for detecting a state of the record area and the space where information is already recorded by detecting a reflection light while recording information thereon by overwriting, a control circuit for calculating a radiation power used for recording the information and for forming the space on the record area so as to overwrite where information is already recorded in the recording medium, in accordance with the detected reflection light, a pulse generator circuit, and an optical driver circuit.

5. 发明授权

US06445659B1 Information recording/reproducing apparatus and method and information recording medium 有权
公开(公告)号：US06445659B1
公开(公告)日：2002-09-03
申请号：US09784115
申请日：2001-02-16
申请人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
发明人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
IPC分类号： G11B700
摘要： An information recording/reproducing apparatus includes a detector circuit for detecting a state of reflection light from the recording medium, a control circuit for calculating a radiation power used for writing the information in the recording medium, in accordance with the reflection light state, a pulse generator circuit for generating record pulse information in accordance with the radiation power, and an optical driver circuit for converting the record pulse information into optical information in accordance with the radiation power and driving the optical head to record the light information into the recording medium. Accordingly, the apparatus records information by applying light from an optical head to a record area of a recording medium and changing a state of the record area and reads the information recorded in the record area.

6. 发明授权

US06680888B2 Information recording/reproducing apparatus and method and information recording medium 失效
标题翻译：信息记录/再现装置和方法和信息记录介质
公开(公告)号：US06680888B2
公开(公告)日：2004-01-20
申请号：US09971686
申请日：2001-10-09
申请人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
发明人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/00454 , G11B7/006
摘要： An information recording/reproducing apparatus includes a detector circuit for detecting a state of reflection light from the recording medium, a control circuit for calculating a radiation power used for writing the information in the recording medium, in accordance with the reflection light state, a pulse generator circuit for generating record pulse information in accordance with the radiation power, and an optical driver circuit for converting the record pulse information into optical information in accordance with the radiation power and driving the optical head to record the light information into the recording medium. Accordingly, the apparatus records information by applying light from an optical head to a record area of a recording medium and changing a state of the record area and reads the information recorded in the record area.
摘要翻译：一种信息记录/再现装置，包括用于检测来自记录介质的反射光的状态的检测器电路，用于根据反射光状态计算用于将信息写入记录介质中的辐射功率的控制电路，脉冲发生器电路，用于根据辐射功率产生记录脉冲信息;以及光驱动器电路，用于根据辐射功率将记录脉冲信息转换成光信息，并驱动光头以将光信息记录到记录介质中。因此，该装置通过将来自光头的光应用到记录介质的记录区域并改变记录区的状态并读取记录在记录区中的信息来记录信息。

7. 发明授权

US06304533B2 Information recording/reproducing apparatus and method and information recording medium 失效
公开(公告)号：US06304533B2
公开(公告)日：2001-10-16
申请号：US09752462
申请日：2001-01-03
申请人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
发明人： Tsuyoshi Toda , Shigeru Nakamura , Takeshi Maeda
IPC分类号： G11B700
CPC分类号： G11B7/126 , G11B7/00454 , G11B7/006
摘要： An information recording/reproducing apparatus includes a detector circuit for detecting a state of reflection light from the recording medium, a control circuit for calculating a radiation power used for writing the information in the recording medium, in accordance with the reflection light state, a pulse generator circuit for generating record pulse information in accordance with the radiation power, and an optical driver circuit for converting the record pulse information into optical information in accordance with the radiation power and driving the optical head to record the light information into the recording medium. Accordingly, the apparatus records information by applying light from an optical head to a record area of a recording medium and changing a state of the record area and reads the information recorded in the record area.

8. 发明授权

US11636233B2 Communication terminal sharing image data with counterpart communication terminal, system including the same, and method for controlling image capture 有权
公开(公告)号：US11636233B2
公开(公告)日：2023-04-25
申请号：US17443544
申请日：2021-07-27
申请人： Takeshi Homma , Hiroshi Hinohara , Shigeru Nakamura , Yuichi Kawasaki
发明人： Takeshi Homma , Hiroshi Hinohara , Shigeru Nakamura , Yuichi Kawasaki
IPC分类号： G06F21/62 , H04N1/44 , G06F3/048 , G06F21/84 , G06F3/0484 , G06F3/14
摘要： A communication terminal, a system, a method, and a control program stored in a non-transitory recording medium for controlling capturing of an image, each of which displays, on a display of the communication terminal, an image based on image data to be shared with a counterpart communication terminal; receives an instruction to prohibit capturing of a screen that includes the image based on the image data; and transmits, from the communication terminal to the counterpart communication terminal, information related to the instruction to prohibit capturing of the screen.

9. 发明授权

US11418628B2 Communication terminal, communication system, and communication method 有权
公开(公告)号：US11418628B2
公开(公告)日：2022-08-16
申请号：US17141236
申请日：2021-01-05
申请人： Hideki Shiro , Shigeru Nakamura , Yuichi Kawasaki , Hiroshi Hinohara , Takeshi Homma
发明人： Hideki Shiro , Shigeru Nakamura , Yuichi Kawasaki , Hiroshi Hinohara , Takeshi Homma
IPC分类号： H04L67/00 , H04L67/75 , G06F3/14 , G06T11/60 , H04L67/1097
摘要： A communication terminal shares data with another communication terminal. The communication terminal includes circuitry. The circuitry receives, from a communication management apparatus that manages the data shared with the another communication terminal, storage location information representing a storage location of background image data transmitted from the another communication terminal, and transmits a download request to an image storing apparatus corresponding to the storage location to request download of the background image data. The circuitry further starts downloading the background image data from the image storing apparatus and receives, from the communication management apparatus, stroke data of a stroke image rendered on the another communication terminal.

10. 发明申请

US20220035958A1 COMMUNICATION TERMINAL, SYSTEM, CONTROL METHOD, AND RECORDING MEDIUM 有权
公开(公告)号：US20220035958A1
公开(公告)日：2022-02-03
申请号：US17443544
申请日：2021-07-27
申请人： Takeshi Homma , Hiroshi Hinohara , Shigeru Nakamura , Yuichi Kawasaki
发明人： Takeshi Homma , Hiroshi Hinohara , Shigeru Nakamura , Yuichi Kawasaki
IPC分类号： G06F21/84 , G06F3/14 , G06F3/0484
摘要： A communication terminal, a system, a method, and a control program stored in a non-transitory recording medium for controlling capturing of an image, each of which displays, on a display of the communication terminal, an image based on image data to be shared with a counterpart communication terminal; receives an instruction to prohibit capturing of a screen that includes the image based on the image data; and transmits, from the communication terminal to the counterpart communication terminal, information related to the instruction to prohibit capturing of the screen.

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