专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明专利

JPS62115944A CONTROLLER 失效
公开(公告)号：JPS62115944A
公开(公告)日：1987-05-27
申请号：JP25472685
申请日：1985-11-15
申请人： HITACHI LTD
发明人： HONDA TOYOTA , TAJIMA TAIJI , INOUE SHIGEKI
摘要： PURPOSE:To recognize the same control state by comparing an opposite party's address detected from a received packet signal with the set address of an opposite party's device in an address comparator circuit, and deciding and processing the packet signal if they coincide with each other. CONSTITUTION:An opposite party's address detection circuit 5 detects only an opposite party's address from the received packet signal, and the address comparator circuit 6 compares the detected address with a preset address and an address to be controlled. If those addresses are coincident with each other, a gate circuit 4 is opened, and the received packet signal is transmitted to a control circuit 9 from a reception buffer 3. If not, the gate circuit 4 is closed, and the operation is waiting for the time when the next packet signal is received. The addresses are coincident with each other, and the received packet signal transmitted to the control circuit 9 through the gate circuit 4 is decoded and processed by the control circuit 9 to display the result on a display circuit 10. Thus all controllers can recognize the same control state, and additional installation of a controller can be easily realized.

42. 发明专利

JPS5919249A Gain controller of servo circuit 失效
标题翻译：伺服电路增益控制器
公开(公告)号：JPS5919249A
公开(公告)日：1984-01-31
申请号：JP12563482
申请日：1982-07-21
申请人： Hitachi Ltd
发明人： NAKAMURA MASAFUMI , NAKAGAKI HARUSHIGE , INOUE SHIGEKI , BABA TATSUO , ARAI TAKAO , FUKUI YUKIO , TAKEUCHI TAKASHI
IPC分类号： G11B21/10 , G11B7/09 , G11B20/10
CPC分类号： G11B7/0945 , G11B20/10
摘要： PURPOSE:To reduce the noise of an actuator and to prevent the drop-off of the main information (music signal) recorded on a disk, by providing a driving device to control the operation of a controller and controlling the gain of a variable gain amplifier prior to a play of the disk. CONSTITUTION:A player main body 21 contains a switch 22 showing that a disk is loaded and transmits signals 0 and 1 to a driving circuit 20 in case a disk is not loaded and loaded respectively as shwon in the figure D. The device 20 transmits a gain control signal shown in the figure E to a gain controller 13 when the figure D shows 1, and the controller 13 performs a gain control only when the figure E shows 1. At the same time, the device 20 transmits play signals 1 and 0 to a digital processor 12 in case the play is possible and discontinued respectively as shown in the figure F. Thus the disk is not played during a gain control is executed. Then the drop-off of a reproduced music signal owing to the gain control has no problem since the gain of a variable gain amplifier is carried out prior to a play of the disk.
摘要翻译：目的：为了减少执行器的噪音，并防止记录在磁盘上的主要信息（音乐信号）掉落，通过提供驱动装置来控制控制器的运行并控制可变增益放大器的增益在播放磁盘之前。构成：玩家主体21包含开关22，该开关22表示盘被装载，并且在盘未被加载和分别装载在图D中的情况下将信号0和1发送到驱动电路20.装置20发送增益控制信号如图D所示，当图D显示为1时，控制器13仅在图E显示1时进行增益控制。同时，设备20发送播放信号1和0 在图F中分别可能并中断播放的情况下的数字处理器12中。因此，在执行增益控制期间该盘不被播放。然后，由于增益控制，再现的音乐信号的下降没有问题，因为在播放盘之前执行可变增益放大器的增益。

43. 发明专利

JPS58212607A Recording and reproducing device 失效
标题翻译：记录和复制设备
公开(公告)号：JPS58212607A
公开(公告)日：1983-12-10
申请号：JP9480782
申请日：1982-06-04
申请人： Hitachi Ltd
发明人： INOUE SHIGEKI , HOSONO MASAHIRO
IPC分类号： G11B20/10 , G11B21/08 , G11B27/00
CPC分类号： G11B21/081
摘要： PURPOSE:To read out menu information precisely by comparing the number of confirmation flags with the number of information in every reading-out of information for the starting time of each music number. CONSTITUTION:If all menu information is read out during the music number is ''0'', both outputs of a comparator 20 and a music number detector 25 are turned to high level and the output of an AND gate 26 is also turned to high level, so that the completion of reading-out of the menu information can be confirmed. The succeeding operation enables a pickup to be controlled, and when the pickup is transferred from a read-in track area to another area before the reading- out of the menu information, the music number is turned to a number other than ''0''. Cconsequently, the outputs of the comparator 20 and the music number detector 25 are turned to low level and the output of an OR gate 28 is also turned to low level. By using the output signal as a transfer instruction signal for the pickup, the pickup is controlled so as to be tarnsferred to the read-in track area, so that the menu information can be read out.
摘要翻译：目的：通过将确认标志的数量与每个音乐编号的开始时间的每个读出信息中的信息数量进行比较来精确地读出菜单信息。构成：如果在音乐编号为“0”期间读出所有菜单信息，则比较器20和音乐编号检测器25的两个输出都变为高电平，“与”门26的输出也变为高电平级别，从而可以确认完成菜单信息的读出。接下来的操作使得能够控制拾取，并且当在读取菜单信息之前将拾取器从读入轨道区域传送到另一区域时，音乐号码被转换为除“0”之外的数字 '。随后，比较器20和音乐编号检测器25的输出变为低电平，或门28的输出也转为低电平。通过使用输出信号作为拾取器的传送指令信号，控制拾取器以便被读取到读入轨迹区域，从而可读出菜单信息。

44. 发明专利

JPS58208979A PROGRAM SELECTING DEVICE 失效
公开(公告)号：JPS58208979A
公开(公告)日：1983-12-05
申请号：JP9125082
申请日：1982-05-31
申请人： HITACHI LTD
发明人： INOUE SHIGEKI , ARAI TAKAO , TAKEUCHI TAKASHI , BABA TATSUO , OOKUBO EIJI
IPC分类号： G11B27/00 , G11B27/10 , G11B27/34
摘要： PURPOSE:To eliminate the inconvenience that the user itself should accumulate each playing time described on a jacket of a disc, by displaying the required playing time of a recording selected at a program selection for accumulating each playing time. CONSTITUTION:A program selecting device 14 and a playing order storage device 15 form a program selecting apparatus where program selection is attained. Further, a calculating means 17 computing the accumulated required playing time and a display 18 are added in addition to a storage device 13 storing the recording number and the required playing time. Through the constitution above, the required playing time of the selected recording is displayed on the display 18 with accumulation at the selection of programs. Thus, the inconvenience that the user itself should accumulate each playing time described on the jacket of the disc in conventional systems is eliminated.

45. 发明专利

JPS58169982A LIGHTING CIRCUIT OF LIGHT SOURCE DEVICE 失效
公开(公告)号：JPS58169982A
公开(公告)日：1983-10-06
申请号：JP5119282
申请日：1982-03-31
申请人： HITACHI LTD
发明人： INOUE SHIGEKI , ISO YOSHIMI , NODA TSUTOMU , KIMURA HIROYUKI
IPC分类号： H03G3/30 , H01L31/12 , H01L33/00
摘要： PURPOSE:To stop light emission while reducing the consumed current by a method wherein a current supply circuit which enables to control ''ON'' and ''OFF'' is provided to a lighting circuit, then a current of strength over the output current of a photo detector is added to the output current of the photo detector therefrom, thus the current of the photo detector is equivalently increased, and accordingly the light emission output of a laser diode is reduced. CONSTITUTION:The laser diode 11 and the photo detector 12 are monolithically formed, then the photo output of the diode 11 is converted into the current corresponded to the light strength, and thus the voltage corresponded to the photo output of the diode 11 is induced to the both ends of a resistor 1. Next, this voltage is put into the positive phase side of an amplifier 6 via a resistor 5, and then made to negatively fed back to the diode 11 via a resistor 8. In this constitution, further the current supply circuit 20 available to ''ON'' and ''OFF'' operation by a control circuit 14 is provided, then the current therefrom is enlarged more than the output current of the element 12, thus a transistor 7 is turned off, and accordingly the light emission of the diode 11 is stopped.

46. 发明专利

JPS58143626A DATA DISCRIMINATING CIRCUIT 失效
公开(公告)号：JPS58143626A
公开(公告)日：1983-08-26
申请号：JP2601082
申请日：1982-02-22
申请人： HITACHI LTD
发明人： NODA TSUTOMU , TANAKA HIROMICHI , KOBAYASHI MASAHARU , ARAI TAKAO , INOUE SHIGEKI , KIMURA HIROYUKI
IPC分类号： H03M5/04 , G11B19/28 , H03K5/08 , H04L25/03
摘要： PURPOSE:To ensure assured and acurate discrimination for the data of an input signal, by detecting the upper and lower widths of pulse of a digital signal independently of each other and feeding the differential voltage back to a voltage comparator. CONSTITUTION:An input waveform 4 applied to an input terminal 8 is compared with a level 15 through a voltage comparator 9. Thus a digital signal 16 is obtained. At the same time, upper and lower pulse lengths 17 and 18 are obtained through upper and lower pulse length detecting circuits 11 and 12, respectively. The difference of count numbers between circuits 11 and 12 is calculated by a subtractor circuit 13. The analog voltage corresponding to the result of operation of the circuit 13 is delivered from a D/A converter 14, and the output of the converter 14 is fed back to the comparing voltage of the comparator 9. As a result, the comparing voltage is set at a position as shown by 19 so as to obtain coincidence between the lengths 17 and 18. Then the digital signal output is shown by 20, and this signal undergoes a digital signal process through a processing circuit 101.

47. 发明专利

JPS5892111A POWER AMPLIFIER 失效
公开(公告)号：JPS5892111A
公开(公告)日：1983-06-01
申请号：JP19008181
申请日：1981-11-27
申请人： HITACHI LTD
发明人： NAKAGAKI HARUSHIGE , INOUE SHIGEKI , ARAI TAKAO
IPC分类号： H03F1/02 , H03F3/20 , H03F3/217
摘要： PURPOSE:To reduce power loss, by variably controlling a power supply voltage according to the amplitude of an output signal. CONSTITUTION:A signal enters from a PCM signal source 1 to a serial/parallel converter 11, where the signal is converted into a signal (c) in parallel and the signal is inputted to a parallel input terminal of a counter 13 according to the period of a sampling pulse B. When the sampling pulse B is inputted to a load input terminal, the counter 13 fetches a value inputted to a parallel input terminal and starts count-down every time a clock pulse D is inputted. The value counted down is inputted to an NOR circuit 14 at each bit, and the output of the NOR circuit is inputted to a reset terminal R of an S.R flip-flop 15. An output signal E of the flip-flop 15 becomes a signal having a pulse width according to the PCM code, this output signal E drives a switching power supply 10 to variably control the amplifier power supply voltage according to the amplitude of the output signal.

48. 发明专利

JPS5856256A CONTROLLER FOR SPEED OF REPRODUCTION 失效
公开(公告)号：JPS5856256A
公开(公告)日：1983-04-02
申请号：JP15370181
申请日：1981-09-30
申请人： HITACHI LTD
发明人： KIMURA HIROYUKI , ISO YOSHIMI , INOUE SHIGEKI , TAKEUCHI TAKASHI , OOHASHI SHINICHI
IPC分类号： G05D13/62 , G11B19/24 , G11B19/28
摘要： PURPOSE:To keep the speed of reproduction constant, by extracting and switching plural reproduction speed signals, and comparing these signals with the reference signal to control the speed of reproduction. CONSTITUTION:The maximum pulse duration is detected by a maximum pulse duration detector 11 with each certain period while the duration is short for the signal which is read out of a disk 1 through a pickup 2. Then the pulse duration is converted into the voltage by a pulse duration/voltage converter 12 and compared 10 with the reference voltage 9 after connecting a switch 13 to (a). Thus a motor 3 is controlled. Then the number of revolutions of the motor 3 increases, and a synchronizing signal detector 5 is ready to detect the synchronizing signal. Thus the switch 13 is connected to (b). The detected synchronizing signal is fed to a digital processor 6 and at the same time converted into the voltage by an f-v converter 8. This voltage is compared 10 with the voltage 9 to control the motor 3. As a result, the linear speed of the disk 1 is kept accurately at a constant level. This can be suitably applied to the reproduction of the PCM system.

49. 发明专利

JPS57147101A TONE ARM SYSTEM FOR PLAYER 失效
公开(公告)号：JPS57147101A
公开(公告)日：1982-09-10
申请号：JP3115681
申请日：1981-03-06
申请人： HITACHI LTD
发明人： NAKAGAKI HARUSHIGE , INOUE SHIGEKI , OOHASHI SHINICHI
IPC分类号： G11B3/10 , G11B3/12
摘要： PURPOSE:To suppress a resonance at low frequencies, by detecting a low resonance frequency of a tone arm and giving damping force to the tone arm via a tone arm driving device with this detection signal. CONSTITUTION:A low resonance frequency is detected at a cartridge 12 accompanied with the revolution of a record disc 10, and this detected output is amplified at an AC amplifier 8 via a low-pass filter 7. An electromagnet 16 is driven with an output of the AC amplifier 8 and a low frequency resonance is suppressed with vertical damping of a tone arm 5 through the generation f absorbing and repulsive force with a permanent magnet 15.

50. 发明专利

JPS5791037A MULTIPATH DISTORTION REDUCING CIRCUIT 失效
公开(公告)号：JPS5791037A
公开(公告)日：1982-06-07
申请号：JP16653280
申请日：1980-11-28
申请人： HITACHI LTD
发明人： SHIBUYA TOSHIFUMI , INOUE SHIGEKI
IPC分类号： H04B1/10 , H04B7/005
摘要： PURPOSE:To confirm the adjustment of delay time, by applying FM and AM detection signals delayed with each delay device delaying the FM and AM detection output signal and a delay device of 1/2 delay time, to a plane drawing display device. CONSTITUTION:A multipath distortion reducing device is provided with a variable delay device 13 delaying an output of an FM detector 7, and variable delay device 11 delaying an output of an AM detector 10 detecting an AM modulation component due to direct and reflected waves of a reception signal by the same time as the delay device 13, and variable dealy device 20 of a half delay time as both delay devices. If the direct wave is greater than the reflected wave, switches 16-19, 21-25 are connected to a contact 1, and an AM detection output and an FM detection output delayed at the delay device 20 are applied to terminals 27, 28 of a plane drawing display device 26. If the reflected wave is greater than the direct wave, the switches 16-19, 21-25 are connected to a contact 2, and the AM and FM detection outputs delayed at the delay device 20 are applied to the terminals 27, 28, to confirm if the adjustment of each delay device is complete by the display device 26.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式