公开(公告)号：US20070014212A1

公开(公告)日：2007-01-18

申请号：US11485221

申请日：2006-07-12

申请人： Masahiro Aoki ,  Yasushi Higashiyama ,  Masashi Ueno

发明人： Masahiro Aoki ,  Yasushi Higashiyama ,  Masashi Ueno

IPC分类号： G11B7/00

CPC分类号： G11B7/13 ,  G11B7/0901 ,  G11B7/0906 ,  G11B7/094 ,  G11B7/1275 ,  G11B2007/0006

摘要： According to one embodiment, a plurality of light receiving elements photoelectrically convert light signals having information signals, respectively. A plurality of first amplification circuits amplify currents of electric signals from the respective light receiving elements. A selecting section selectively outputs one of signals amplified by the plurality of first amplification circuits. A second amplification circuit amplifies a voltage of the signal output from the selecting section, and supplies the signal to the outside.

摘要翻译： 根据一个实施例，多个光接收元件分别对具有信息信号的光信号进行光电转换。 多个第一放大电路放大来自各个光接收元件的电信号的电流。 选择部分选择性地输出由多个第一放大电路放大的信号之一。 第二放大电路放大从选择部分输出的信号的电压，并将信号提供给外部。

公开(公告)号：US07603043B2

公开(公告)日：2009-10-13

申请号：US11485221

申请日：2006-07-12

申请人： Masahiro Aoki ,  Yasushi Higashiyama ,  Masashi Ueno

发明人： Masahiro Aoki ,  Yasushi Higashiyama ,  Masashi Ueno

IPC分类号： H04B10/06

CPC分类号： G11B7/13 ,  G11B7/0901 ,  G11B7/0906 ,  G11B7/094 ,  G11B7/1275 ,  G11B2007/0006

摘要： According to one embodiment, a plurality of light receiving elements photoelectrically convert light signals having information signals, respectively. A plurality of first amplification circuits amplify currents of electric signals from the respective light receiving elements. A selecting section selectively outputs one of signals amplified by the plurality of first amplification circuits. A second amplification circuit amplifies a voltage of the signal output from the selecting section, and supplies the signal to the outside.

摘要翻译： 根据一个实施例，多个光接收元件分别对具有信息信号的光信号进行光电转换。 多个第一放大电路放大来自各个光接收元件的电信号的电流。 选择部分选择性地输出由多个第一放大电路放大的信号之一。 第二放大电路放大从选择部分输出的信号的电压，并将信号提供给外部。

公开(公告)号：US20070035801A1

公开(公告)日：2007-02-15

申请号：US11485487

申请日：2006-07-12

申请人： Yasushi Higashiyama ,  Masahiro Aoki

发明人： Yasushi Higashiyama ,  Masahiro Aoki

IPC分类号： G02F1/03

CPC分类号： G11B7/13 ,  G11B7/005 ,  G11B7/0901 ,  G11B7/0909 ,  G11B7/0956 ,  G11B7/131

摘要： A light receiving element circuit is an integrated circuit configured by a light receiving element which photoelectrically converts an optical signal having an information signal, and amplifier circuits which amplify the photoelectrically converted electric signal and output the signal. The light receiving element circuit comprises a reference voltage generating circuit which generates a reference voltage of the amplifier circuits, a reference voltage output terminal which outputs the reference voltage, a reference voltage input terminal which inputs a reference voltage from the outside, a switch which switches the reference voltage from the reference voltage generating circuit and the reference voltage inputted from the reference voltage input terminal, and a reference voltage switch terminal which inputs signal for controlling the switch.

摘要翻译： 光接收元件电路是由光接收元件构成的集成电路，该光接收元件对具有信息信号的光信号进行光电转换，放大器电路放大光电转换的电信号并输出​​该信号。 光接收元件电路包括产生放大器电路的参考电压的参考电压产生电路，输出参考电压的参考电压输出端子，从外部输入参考电压的参考电压输入端子，切换开关 来自参考电压产生电路的参考电压和从参考电压输入端输入的参考电压，以及输入用于控制开关的信号的参考电压开关端子。

公开(公告)号：US4525828A

公开(公告)日：1985-06-25

申请号：US359808

申请日：1982-03-19

申请人： Yasushi Higashiyama ,  Shu Chiba ,  Norikazu Sawazaki

发明人： Yasushi Higashiyama ,  Shu Chiba ,  Norikazu Sawazaki

IPC分类号： G11B5/02 ,  G11B5/008 ,  G11B5/56 ,  G11B5/86 ,  G11B7/00 ,  G11B7/003 ,  G11B7/004 ,  G11B7/12 ,  G11B11/14

CPC分类号： G11B5/56 ,  G11B5/0086 ,  G11B5/86 ,  G11B7/0031

摘要： An optical recording device for forming recording tracks of an indented pattern on a magnetic recording tape comprises a rotary drum which has at least two windows, the magnetic recording tape being driven obliquely on the windows along an outer surface of the drum, and an optical system, disposed inside the rotary drum, for converting a modulated laser beam incident on the optical system into two slit beams, major axes of sections of which form a predetermined angle and for emitting the slit beams on the magnetic recording tape through the windows, whereby the recording tracks of the indented pattern in correspondence with the signal are formed obliquely on the magnetic recording tape with respect to a longitudinal direction of the magnetic recording tape by the slit beams so as to form different azimuths between adjacent recording tracks.

摘要翻译： 一种用于在磁记录带上形成缩进图案的记录磁迹的光学记录装置包括具有至少两个窗口的旋转磁鼓，磁记录带沿着滚筒的外表面倾斜地在窗口上被驱动，并且光学系统 ，设置在旋转磁鼓内部，用于将入射在光学系统上的调制激光束转换成两个狭缝光束，其截面的主轴形成预定角度，并通过窗口将光束发射在磁记录带上， 通过狭缝光束相对于磁记录带的纵向倾斜地在磁记录带上形成与信号相对应的凹入图案的记录轨迹，以便在相邻的记录轨道之间形成不同的方位角。

公开(公告)号：US20060077798A1

公开(公告)日：2006-04-13

申请号：US11238015

申请日：2005-09-29

申请人： Kazuto Kuroda ,  Yasushi Higashiyama ,  Hiroharu Satoh

发明人： Kazuto Kuroda ,  Yasushi Higashiyama ,  Hiroharu Satoh

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G11B7/0906 ,  G11B7/0941 ,  G11B20/22

摘要： An optical disk apparatus of the invention includes an optical pickup which irradiates an optical disk with a laser beam, a light-reception unit including a first light-reception element and a second light-reception element, the light-reception unit receiving the laser beam reflected from the optical disk to provide a first photodetection signal and a second photodetection signal corresponding to the reflected laser beam, measuring units and which receive the first and second photodetection signals from the optical pickup to measure propagation delay time difference between the first and second photodetection signals, a delay unit which delays the first and second photodetection signals based on the signal propagation delay time difference such that delay times of the first and second photodetection signals are equalized to each other, and a signal processing circuit which processes the first and second photodetection signals delayed by the delay unit, and provides the processed signals.

摘要翻译： 本发明的光盘装置包括：光学拾取器，其用激光束照射光盘;受光单元，包括第一光接收元件和第二光接收元件;光接收单元接收激光束 从光盘反射以提供对应于反射激光束的第一光电检测信号和第二光电检测信号，测量单元，并且从光学拾取器接收第一和第二光电检测信号，以测量第一和第二光电检测之间的传播延迟时间差 信号，延迟单元，其基于所述信号传播延迟时间差延迟所述第一和第二光电检测信号，使得所述第一和第二光电检测信号的延迟时间彼此相等;以及信号处理电路，其处理所述第一和第二光电检测 由延迟单元延迟的信号，并提供经处理的信号 s。

公开(公告)号：US20060198264A1

公开(公告)日：2006-09-07

申请号：US11342338

申请日：2006-01-27

申请人： Masashi Ueno ,  Yasushi Higashiyama ,  Hiroharu Satoh

发明人： Masashi Ueno ,  Yasushi Higashiyama ,  Hiroharu Satoh

IPC分类号： G11B7/095

CPC分类号： G11B19/128 ,  G11B2007/0006

摘要： An optical disk device includes first pickup portion PU1 which outputs first detection signal by irradiating first laser beam having first wavelength to surface of optical disk and receiving its reflected light, second pickup portion PU2 having independent structure, which irradiates second laser beam having second wavelength and receives its reflected light so as to output second detection signal, and control portion in which with the first laser beam and the second laser beam so as to receive the first detection signal and the second detection signal, when system data of first class disk system area is detected from the first detection signal, the optical disk is determined to be the first class disk and when system data of second class disk system area is detected from the second detection signal, that optical disk is determined to be the second class.

摘要翻译： 光盘装置包括第一拾取部分PU 1，其通过将具有第一波长的第一激光束照射到光盘表面并接收其反射光来输出第一检测信号，第二拾取部分PU 2具有独立结构，其照射具有第二激光束的第二激光束 波长并接收其反射光以输出第二检测信号，以及控制部分，其中与第一激光束和第二激光束接收第一检测信号和第二检测信号，当第一等级盘的系统数据 从第一检测信号检测系统区域，将光盘确定为第一类盘，并且当从第二检测信号检测到第二类盘系统区域的系统数据时，该光盘被确定为第二类。

公开(公告)号：US5532887A

公开(公告)日：1996-07-02

申请号：US29303

申请日：1993-03-08

申请人： Yasushi Higashiyama ,  Takanori Furusawa

发明人： Yasushi Higashiyama ,  Takanori Furusawa

IPC分类号： G11B5/008 ,  G11B5/09 ,  G11B5/53 ,  G11B15/02 ,  G11B15/087 ,  G11B15/12 ,  G11B15/14 ,  G11B27/032 ,  G11B27/036

CPC分类号： G11B5/534 ,  G11B15/02 ,  G11B15/087 ,  G11B15/12 ,  G11B15/125 ,  G11B15/14 ,  G11B27/036 ,  G11B5/0086 ,  G11B5/53 ,  G11B2220/90 ,  G11B27/032 ,  G11B5/09

摘要： A magnetic recording/reproduction apparatus comprises a magnetic tape running apparatus to rotate a rotary drum and run a magnetic tape with the magnetic tape being in contact with, at least, part of the circumferential surface of the rotary drum, a plurality of erasing magnetic heads installed on the rotary drum so that the magnetic tape are in contact with the heads and used to erase recording signal, a plurality of recording magnetic heads used for recording, a plurality of erasing circuits installed on the rotary drum to output erasing signal to each of the erasing magnetic heads, a plurality of recording circuits connected to the recording magnetic heads respectively and installed on the rotary drum so that the recording circuits are selectively be gone to active state and non-active state, one or more rotary transformers connected to erasing circuits in common, and a driving circuit to record information signal in the magnetic tape through recording magnetic heads, recording circuits, and rotary transformers.

摘要翻译： 一种磁记录/再现设备包括磁带运行装置，用于旋转旋转磁鼓并使磁带与磁鼓的至少部分与旋转磁鼓的圆周表面接触，多个擦除磁头 安装在旋转磁鼓上，使得磁带与头接触并用于擦除记录信号，用于记录的多个记录磁头，安装在旋转磁鼓上的多个擦除电路，以将擦除信号输出到每个 擦除磁头，分别连接到记录磁头并安装在旋转磁鼓上的多个记录电路，使得记录电路选择性地进入有效状态和非活动状态，一个或多个连接到擦除电路的旋转变压器 以及通过记录磁头在磁带中记录信息信号的驱动电路，记录循环 uits和旋转变压器。

公开(公告)号：US20070086311A1

公开(公告)日：2007-04-19

申请号：US11469386

申请日：2006-08-31

申请人： Yasushi Higashiyama ,  Katsuo Iwata

发明人： Yasushi Higashiyama ,  Katsuo Iwata

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  G11B7/131 ,  G11B7/133 ,  H03F3/087 ,  H03F3/45475 ,  H03F2203/45526

摘要： First and second photo detector cells are independently provided. At the time of a disk reproducing laser power, an addition output of electric signals subjected to opto-electric conversion from the first and second photo detector cells is derived as a control signal of a laser drive circuit by a first processing circuit. At a disk recording laser power, on the other hand, an electric signal subjected to opto-electric conversion from any one of the first and second photo detector cells is derived as a control signal of the laser drive circuit by a second processing circuit.

摘要翻译： 独立地提供第一和第二光电检测器单元。 在盘再现激光功率时，通过第一处理电路导出从第一和第二光电检测器单元进行光电转换的电信号的相加输出作为激光驱动电路的控制信号。 另一方面，在盘记录激光功率下，通过第二处理电路导出从第一和第二光电检测器单元中的任何一个进行光电转换的电信号作为激光驱动电路的控制信号。

公开(公告)号：US5784217A

公开(公告)日：1998-07-21

申请号：US482817

申请日：1995-06-07

申请人： Yasushi Higashiyama ,  Takanori Furusawa

发明人： Yasushi Higashiyama ,  Takanori Furusawa

IPC分类号： G11B5/008 ,  G11B5/09 ,  G11B5/53 ,  G11B15/02 ,  G11B15/087 ,  G11B15/12 ,  G11B15/14 ,  G11B27/032 ,  G11B27/036

CPC分类号： G11B5/534 ,  G11B15/02 ,  G11B15/087 ,  G11B15/12 ,  G11B15/125 ,  G11B15/14 ,  G11B27/036 ,  G11B5/0086 ,  G11B5/53 ,  G11B2220/90 ,  G11B27/032 ,  G11B5/09

摘要： A magnetic recording/reproduction apparatus comprises a magnetic tape running apparatus to rotate a rotary drum and run a magnetic tape with the magnetic tape being contact with, at least, part of the circumferential surface of the rotary drum, a plurality of erasing magnetic heads installed on the rotary drum so that the magnetic tape are in contact with the heads and used to erase recording signal, a plurality of recording magnetic heads used for recording, a plurality of erasing circuits installed on the rotary drum to output erasing signal to each of the erasing magnetic heads, a plurality of recording circuits connected to the recording magnetic heads respectively and installed on the rotary drum so that the recording circuits are selectively be gone to enable state and disable state, one or more rotary transformers connected to erasing circuits in common, and a driving circuit to record information signal in the magnetic tape through recording magnetic heads, recording circuits, and rotary transformers.

摘要翻译： 磁记录/再现装置包括磁带运行装置，用于旋转旋转磁鼓并运行磁带，磁带与旋转磁鼓的至少一部分圆周表面接触，安装有多个擦除磁头 在旋转磁鼓上使得磁带与磁头接触并用于擦除记录信号，用于记录的多个记录磁头，安装在旋转磁鼓上的多个擦除电路，以将擦除信号输出到每个 擦除磁头，分别连接到记录磁头并安装在旋转磁鼓上的多个记录电路，使得记录电路选择性地去使能状态和禁用状态，一个或多个共同地与擦除电路连接的旋转变压器， 以及通过记录磁头，记录电路将信息信号记录在磁带中的驱动电路， 和旋转变压器。

公开(公告)号：US5434720A

公开(公告)日：1995-07-18

申请号：US966014

申请日：1992-10-23

申请人： Yasushi Higashiyama ,  Takanori Furusawa ,  Akira Maekawa

发明人： Yasushi Higashiyama ,  Takanori Furusawa ,  Akira Maekawa

IPC分类号： G11B5/008 ,  G11B5/09 ,  G11B5/53 ,  G11B15/02 ,  G11B15/087 ,  G11B15/12 ,  G11B27/032 ,  G11B27/036 ,  G11B15/14 ,  G11B5/52

CPC分类号： G11B5/0086 ,  G11B15/02 ,  G11B15/087 ,  G11B15/12 ,  G11B15/125 ,  G11B27/036 ,  G11B5/53 ,  G11B2220/90 ,  G11B27/032 ,  G11B5/09

摘要： A rotary scanning-type magnetic recording and reproduction apparatus comprises a plurality of magnetic heads installed on a rotary drum, and being in contact with a magnetic tape running on the peripheral surface of the rotary drum, for recording the information signal onto the magnetic tape and/or reproducing the information signal from the magnetic tape, a plurality of recording circuits connected to the magnetic heads respectively, for processing the information signal to be recorded on the magnetic tape transferred from outside the rotary drum and output it to the magnetic head, a rotary transformer for transferring the information signal sent from outside the rotary drum to the recording circuits, and a control circuit for sequentially selectively bringing the recording circuits into an active state according to the rotational position of the rotary drum, and bringing the recording circuits into an active state only during a period of time when the information signal is detected.

摘要翻译： 一种旋转扫描型磁记录和再现装置，包括安装在旋转磁鼓上的多个磁头，并且与在旋转磁鼓的周面上运行的磁带接触，用于将信息信号记录到磁带上， /或从磁带再现信息信号，分别连接到磁头的多个记录电路，用于处理要记录在从旋转磁鼓外部传送的磁带上并将其输出到磁头的信息信号， 用于将从旋转磁鼓外部发送的信息信号传送到记录电路的旋转变压器，以及用于根据旋转磁鼓的旋转位置依次选择性地使记录电路进入活动状态的控制电路， 仅在检测到信息信号的时间段期间有效。