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1. 发明授权

US4214299A Frequency-voltage converter 失效
标题翻译：变频器
公开(公告)号：US4214299A
公开(公告)日：1980-07-22
申请号：US940007
申请日：1978-09-06
申请人： Harushige Nakagaki , Syunji Iwasaki , Isao Fukushima
发明人： Harushige Nakagaki , Syunji Iwasaki , Isao Fukushima
IPC分类号： G01R23/09 , G01R23/06 , G05D13/62 , H03D3/00 , H03K17/66 , H02M7/00
CPC分类号： G01R23/06
摘要： A first pulse train has repetition pulses in proportion to the frequency of an input signal. A second pulse train has repetition pulses obtained by shifting the timing phase of the pulses of the first pulse train. One of the pulse trains is used to drive a saw-tooth wave generator circuit, thereby producing a saw-tooth wave voltage, which is supplied to a sample-and-hold circuit, which in turn is driven by the other pulse train so that the saw-tooth wave voltage is sampled and held, thereby producing a DC voltage.
摘要翻译：第一脉冲串具有与输入信号的频率成比例的重复脉冲。第二脉冲串具有通过移动第一脉冲序列的脉冲的定时相位而获得的重复脉冲。脉冲列中的一个用于驱动锯齿波发生器电路，从而产生锯齿波电压，该锯齿波电压被提供给采样保持电路，采样保持电路又由另一个脉冲串驱动，使得锯齿波电压被采样保持，从而产生直流电压。

2. 发明授权

US4707816A Method and apparatus for composite wobbled and push-pull tracking servo system 失效
标题翻译：复合摆动和推挽跟踪伺服系统的方法和装置
公开(公告)号：US4707816A
公开(公告)日：1987-11-17
申请号：US938961
申请日：1986-12-08
申请人： Seiji Yonezawa , Masatoshi Ohtake , Masaru Ito , Toshiaki Tsuyoshi , Kazuo Ichino , Harushige Nakagaki
发明人： Seiji Yonezawa , Masatoshi Ohtake , Masaru Ito , Toshiaki Tsuyoshi , Kazuo Ichino , Harushige Nakagaki
IPC分类号： G11B7/013 , G11B7/09 , G11B7/095
CPC分类号： G11B7/0956 , G11B7/0904 , G11B7/0938 , G11B7/094 , G11B7/0948 , G11B7/24085 , G11B7/0901
摘要： A composite wobbled tracking servo system uses a rotary optical disc which has a header field and a data field alternately arranged along the direction of rotation, and which includes pregrooves formed in at least the data field and at least one pair of wobbled track marks disposed in each of the header fields in a relation wobbled relative to the center of a track. A light spot is directed toward and onto the optical disc to detect a push-pull tracking error signal from the reflection of the light spot diffracted from the pregroove, and a wobbled tracking error signal is detected from the reflection of the light spot passing the wobbled track marks. After attenuating the gain of the wobbled tracking error signal by a low-pass filter so that the gain of the wobbled tracking error signal becomes equal to that of the push-pull tracking error signal at a frequency fe satisfying the relation1/50.multidot.N.multidot.fd
摘要翻译：复合摆动跟踪伺服系统使用旋转光盘，该旋转光盘具有沿着旋转方向交替布置的头部场和数据场，并且包括形成在至少数据场中的预槽和至少一对摆动轨迹一个关系中的每个头字段相对于轨道的中心摆动。光点被指向光盘上并且到达光盘上以从从预制槽衍射的光点的反射中检测推挽跟踪误差信号，并且从通过摆动的光斑的光点的反射检测摆动的跟踪误差信号轨迹在通过低通滤波器对摆动跟踪误差信号的增益进行衰减之后，使摆动跟踪误差信号的增益等于推挽跟踪误差信号的频率fe满足关系1 / 50xNxfd

3. 发明授权

US5963517A Disk reproducing speed control method and a disk reproducing apparatus using the same 失效
标题翻译：磁盘重放速度控制方法及使用其的磁盘重放装置
公开(公告)号：US5963517A
公开(公告)日：1999-10-05
申请号：US785537
申请日：1997-01-17
申请人： Harushige Nakagaki , Tokinori Furuichi , Kazuhiro Oda , Ryuichi Koike , Hideo Suenaga
发明人： Harushige Nakagaki , Tokinori Furuichi , Kazuhiro Oda , Ryuichi Koike , Hideo Suenaga
IPC分类号： G11B19/20 , G11B7/095 , G11B19/04 , G11B19/28 , G11B21/10 , G11B5/09 , G11B17/22
CPC分类号： G11B19/28 , G11B19/04 , G11B21/106 , G11B7/0953 , G11B7/0956
摘要： An method to prevent excessive heat generation of the pickup actuator from occurring when a disk has a large eccentricity or planar vibration in a high-speed disk reproducing apparatus using an optical pickup. The disk reproducing apparatus has a status determining arrangement for monitoring a present actuator drive state, an analyzing arrangement for analyzing an output signal of the status determining arrangement, and disk rotational speed switching control arrangement for selecting disk reproducing speeds according to a control signal of the identification means, thereby lowering the reproducing speed when the eccentricity or planar vibration is large. Such invention prevents heat generation of the pickup actuator from occurring because high-speed reproduction can be performed when the eccentricity or planar vibration is small, and reproduction speed can be automatically reduced when the eccentricity or planar vibration is large.
摘要翻译：在使用光学拾取器的高速盘再现装置中，当盘具有大的偏心率或平面振动时，防止拾取器致动器过度产生热量的方法。盘再现装置具有用于监视当前致动器驱动状态的状态确定装置，用于分析状态确定装置的输出信号的分析装置和用于根据控制信号选择盘重放速度的盘旋转速度切换控制装置识别装置，从而当偏心或平面振动较大时降低重放速度。这样的发明防止了拾取器致动器的发热，因为当偏心率或平面振动小时可以执行高速再现，并且当偏心率或平面振动较大时可以自动减小再现速度。

4. 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。

5. 发明授权

US4675855A Reproducing rate control apparatus for information recording disc 失效
标题翻译：用于信息记录盘的再现速率控制装置
公开(公告)号：US4675855A
公开(公告)日：1987-06-23
申请号：US596417
申请日：1984-04-03
申请人： Yoshimi Iso , Harushige Nakagaki , Masafumi Nakamura
发明人： Yoshimi Iso , Harushige Nakagaki , Masafumi Nakamura
IPC分类号： G05D13/62 , G11B19/20 , G11B19/24 , G11B19/28 , G11B20/10 , G11B21/08 , G11B27/32 , G11B27/10
CPC分类号： G11B19/20 , G11B19/24 , G11B19/28 , G11B20/10 , G11B20/10527 , G11B21/083 , G11B27/32
摘要： A reproducing rate control apparatus for an information recording disc in which pieces of information and absolute times for respective information pieces (representative of the reproduction time measured from the innermost circumference of the information recording disc) are recorded on the disc at a constant linear velocity, a revolution number of the disc at a command position is predicted, rotation of a disc drive motor is controlled so that the disc rotates at a predicted revolution number, and an information reader adapted to read the information recorded on the disc is moved to the command position when the revolution number controlling is effected or after the revolution number controlling has been completed.
摘要翻译：一种用于信息记录盘的再现速率控制装置，其中以一定的线速度将盘信息和各信息片的绝对时间（代表从信息记录盘的最内周测量的再现时间）记录在盘上，预测在命令位置的盘的转数，控制盘驱动马达的旋转，使得盘以预测的转数旋转，并且适于读取记录在盘上的信息的信息读取器被移动到命令进行转数控制或转数控制完成后的位置。

6. 发明授权

US4241456A Remote-controlled receiver 失效
标题翻译：遥控接收器
公开(公告)号：US4241456A
公开(公告)日：1980-12-23
申请号：US068564
申请日：1979-08-22
申请人： Harushige Nakagaki , Shigeki Inoue
发明人： Harushige Nakagaki , Shigeki Inoue
IPC分类号： H04B10/2507 , G08C23/04 , H04B10/00 , H04B10/07 , H04B10/116 , H04B10/524 , H04B10/564 , H04Q9/00 , H04B9/00
CPC分类号： H04B10/60 , G08C23/04
摘要： An infrared remote-controlled receiver of the type comprising an infrared sensing element for receiving a signal transmitted by means of infrared radiation, and an amplifier for amplifying the signal detected by the sensing element, is further provided with detecting means for detecting the ambient luminance of the receiver (an interference signal) and gain control means for supplying the output signal of the detecting means to the amplifier to control its gain in accordance with the ambient luminance of the receiver.
摘要翻译：一种红外线遥控接收器，其特征在于，包括用于接收通过红外线辐射传输的信号的红外感测元件和用于放大由感测元件检测到的信号的放大器，该检测装置还具有用于检测环境亮度的检测装置接收器（干扰信号）和增益控制装置，用于将检测装置的输出信号提供给放大器，以根据接收机的环境亮度控制其增益。

7. 发明授权

US4100501A Audio frequency power amplifier 失效
标题翻译：音频功率放大器
公开(公告)号：US4100501A
公开(公告)日：1978-07-11
申请号：US767963
申请日：1977-02-11
申请人： Harushige Nakagaki , Tohru Sampei , Nobutaka Amada , Tatsuo Baba
发明人： Harushige Nakagaki , Tohru Sampei , Nobutaka Amada , Tatsuo Baba
IPC分类号： H03F1/02 , H03F3/30 , H03F3/26
CPC分类号： H03F1/0244 , H03F3/3076
摘要： An audio frequency power amplifier wherein an input signal is applied to respective input electrodes of a pair of transistors of the same conductivity type to produce an output signal at an output electrode of one of the pair of transistors. A common electrode of the one transistor is connected with an output electrode of the other transistor and a power from a first D.C. power supply is supplied to the junction thereof through a diode while a power is supplied to a common electrode of the other transistor from a second D.C. power supply having a higher voltage than that of the first D.C. power supply. The other transistor and the diode are alternately rendered conductive and non-conductive in response to the signal level of the input signal, a capacitor is connected to the input electrode of the other transistor, which capacitor is charged during the turn-off of the other transistor whereby the charge is supplied to the other transistor upon turning on of the other transistor to shorten the rise time.
摘要翻译：一种音频功率放大器，其中输入信号被施加到相同导电类型的一对晶体管的相应输入电极，以在该对晶体管之一的输出电极处产生输出信号。一个晶体管的公共电极与另一个晶体管的输出电极连接，并且来自第一直流电源的功率通过二极管被提供给其结，同时从另一个晶体管的公共电极向第二直流电源的电压高于第一直流电源的电压。另一个晶体管和二极管响应于输入信号的信号电平交替地导通和不导通，电容器连接到另一个晶体管的输入电极，该电容器在另一个晶体管的截止期间被充电晶体管，由此在另一晶体管导通时将电荷提供给另一晶体管以缩短上升时间。

8. 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。

9. 发明授权

US4427951A Protective device for power amplifier 失效
标题翻译：功率放大器保护装置
公开(公告)号：US4427951A
公开(公告)日：1984-01-24
申请号：US335545
申请日：1981-12-29
申请人： Nobutaka Amada , Harushige Nakagaki , Shigeki Inoue
发明人： Nobutaka Amada , Harushige Nakagaki , Shigeki Inoue
IPC分类号： H03F1/02 , H03F1/52 , H03F3/04 , H02H7/20
CPC分类号： H03F1/0222 , H03F1/0233 , H03F1/52 , H03F2200/504
摘要： In a power amplifier having a power circuit of a switching control system, a protective device for the power amplifier has connected to the amplifier a means for detecting an abnormal signal produced at the amplifier, and a control means connected between the detecting means and the power circuit to the amplifier so as to cut off a switching control signal to the power circuit when an abnormal signal is generated at the amplifier, thereby stopping the power circuit from operating to cut off power to the power amplifier. The detecting means is formed of a detecting circuit connected to the output end of the amplifier so as to detect the DC output voltage or excessive current from the amplifier, and a driving circuit connected to the detecting circuit so as to be operated by the output signal from the detecting circuit. The control means is formed of a switching control signal cut off circuit connected between the driving circuit and the power circuit so as to be supplied with the output voltage or current from the detecting means when it detects the DC output voltage or excessive current from the amplifier, thereby cutting off the switching control signal cut-off circuit.
摘要翻译：在具有开关控制系统的电源电路的功率放大器中，用于功率放大器的保护装置已经连接到放大器，用于检测放大器产生的异常信号的装置，以及连接在检测装置和电源之间的控制装置电路连接到放大器，以便在放大器产生异常信号时切断到电源电路的开关控制信号，从而停止电源电路以切断对功率放大器的电力。检测装置由连接到放大器的输出端的检测电路形成，以便检测来自放大器的直流输出电压或过大的电流，以及连接到检测电路以便由输出信号操作的驱动电路从检测电路。控制装置由连接在驱动电路和电源电路之间的切换控制信号切断电路构成，以便当检测到来自放大器的直流输出电压或过大的电流时，从检测装置提供输出电压或电流从而切断开关控制信号切断电路。

10. 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。

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