中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.023 seconds)

    RECORDING AND REPRODUCING DEVICE
    1.
    发明专利
    RECORDING AND REPRODUCING DEVICE 失效

    公开(公告)号：JPS6025007A

    公开(公告)日：1985-02-07

    申请号：JP13228083

    申请日：1983-07-20

    Applicant: SONY CORP

    Inventor： SHIROCHI YOSHIKI ,  KUMAGAI TAKUYA ,  HIRAI JIYUN

    IPC: G11B5/02 ,  G11B5/027 ,  G11B5/53 ,  G11B21/00

    Abstract: PURPOSE:To prevent a noise due to the elongation and contraction of a tape by providing another heat before the 1st heat which records and reproduces a sound signal, and arranging those two heads so that the 1st heat rushes to the tape in the remaining period of the waving of the tape due to the rushing of the other head. CONSTITUTION:Heads HA1 and HA2 are provided a specific size behind heads HV1 and HV2. Further, steps (h) which are about one pitch or more than of a slanting track on the tape T so that the heads HA1 and HA2 are on the supply side of the tape T. Consequently, the tape T elongates firstly owing to the rushing of the heads HV1 and HV2, but oscillates at the same time and the heads HA1 and HA2 rush while the oscillation remains; the heads HV1 and HV2 contact the tape T without striking the tape T and perform recording or reproduction without any elongation of the tape T. Therefore, no noise is generated even in the reproduction by another VTR of similar constitution.

    Magnetic recording and reproducing device
    5.
    发明专利
    Magnetic recording and reproducing device 失效
    磁记录和再现设备

    公开(公告)号：JPS59195302A

    公开(公告)日：1984-11-06

    申请号：JP6973283

    申请日：1983-04-20

    Applicant: Sony Corp

    Inventor： KOUNO TAKASHI ,  HAGITA YOSHIHARU ,  KUMAGAI TAKUYA ,  MARUICHI TAKANORI

    IPC: G11B5/027 ,  G11B20/24

    CPC classification number: G11B20/24

    Abstract: PURPOSE:To ensure the interchangeability between magnetic recording/reproducing devices of different mechanical systems by producing the artificial noise in response to the characteristics of the mechanical system by means of noise generating means and superposing these noises on the recording signals to obtain an ideal pattern which is not affected by said mechanical characteristics for tracks on a magnetic tape. CONSTITUTION:When a standard tape is reproduced, the artificial noise signal is added to the reproduction signal sent from an FM demodulator 48 by an adder 50 in order to offset the mechanical noise of a magnetic recording/reproducing device. Therefore a sound signal containing no said mechanical noise is obtained from an output terminal 58. When the sound signal is recorded, the artificial noise signal is subtracted from the output signal of a noise reduction circuit 28. The recording wavelength which is recorded to a magnetic tape 42 are corrected to be even over the entire part of a track. Thus the recording wavelength is equal at any position of a track regardless of the presence of mechanical noises. As a result, the sound signal reproduced by this new device having a correcting circuit has no said mechanical noise as long as the using tape has the normal recording wavelength including a standard tape.

    Abstract translation: 目的：为了确保不同机械系统的磁记录/再现装置之间的互换性，通过噪声发生装置响应于机械系统的特性产生人为噪声，并将这些噪声叠加在记录信号上，以获得理想的图形， 不受磁带上磁道的所述机械特性的影响。 构成：当再现标准磁带时，通过加法器50将人造噪声信号添加到从FM解调器48发送的再现信号中，以便抵消磁记录/再现装置的机械噪声。 因此，从输出端子58获得不包含所述机械噪声的声音信号。当记录声音信号时，从噪声降低电路28的输出信号中减去人为噪声信号。记录到磁性的记录波长 胶带42被校正为在轨道的整个部分上均匀。 因此，无论存在机械噪声，记录波长在轨​​道的任何位置是相等的。 结果，只要使用带具有包括标准带的正常记录波长，由具有校正电路的新装置再现的声音信号就没有所述机械噪声。

    ROTARY HEAD TYPE RECORDING AND REPRODUCING DEVICE
    6.
    发明专利
    ROTARY HEAD TYPE RECORDING AND REPRODUCING DEVICE 失效

    公开(公告)号：JPS63234442A

    公开(公告)日：1988-09-29

    申请号：JP6740287

    申请日：1987-03-20

    Applicant: SONY CORP

    Inventor： KUMAGAI TAKUYA

    IPC: G11B15/473

    Abstract: PURPOSE:To reduce jitter by providing a correcting circuit, which adjusts the level, the phase, or the like of a pulse synchronized with rotation of a rotary head to obtain a correction signal, and a means which adds the correction signal to the driving signal of the rotary head. CONSTITUTION:At the time of reproducing in the SP mode, about 30HZ head switching pulse SWP is supplied to an input terminal 3 of a correcting circuit 2 and a correction signal Sc is outputted to an output terminal 4. This signal Sc is added to the error signal of a drum servo circuit 5; and in the servo circuit 5, rotation of a drum motor 6 which drives a drum 1 is detected by a rotation detector 7 of a frequency generator or the like and is supplied to a phase comparing circuit 8 and is compared with a reference signal Ss. The error signal obtained from the phase comparing circuit 8 is added to the signal Sc by an adder 9 to control rotation of the motor 6 through a driving circuit 10. Thus, the jitter component is cancelled.

    DRIVING DEVICE FOR TAPE REEL
    7.
    发明专利
    DRIVING DEVICE FOR TAPE REEL 失效

    公开(公告)号：JPS5850640A

    公开(公告)日：1983-03-25

    申请号：JP14876681

    申请日：1981-09-22

    Applicant: SONY CORP

    Inventor： MISAO IKUO ,  MASUDA TAKASHI ,  KUMAGAI TAKUYA

    IPC: G11B15/00 ,  G11B15/30 ,  G11B15/43

    Abstract: PURPOSE:To eliminate sags stably irrespectively of the varying extents of sags and to reduce the size of a device by detecting the intermittent driving and revolving speeds of a motor only by the electric circuit constitution without using mechanical construction. CONSTITUTION:A driving circuit 8 is operated by the sag removing signal according to the sag removing operations of a tape. If there is any sag, rotating speed of a motor 7 increases sharply, and the output of an f-V converter 5 exceeds a reference voltage Vref. At a time t2 a voltage comparator 6 operates and the compared output thereof is changed over to ''H''. The output of the circuit 8 drops to a zero level when the compared output is ''H''. Therefore the revolving speed of the motor 7 decreases and the f-V converted output drops lower than the reference voltage. Here the compared output changes over to ''L'', and the motor 7 is again driven. Thereafter the motor is driven intermittently by the repetition of the above-mentioned operations until the sags of the tape are removed. At the point of the time when it is detected that a reel turntable 2 is at a standstill by the thorough removal of the sags of the tape, the power supply to the circuit 8 is interrupted and the driving of the motor 7 is completely stopped.

    TAPE DRIVE CONTROLLER OF TAPE RECORDER
    8.
    发明专利
    TAPE DRIVE CONTROLLER OF TAPE RECORDER 失效

    公开(公告)号：JPS5644141A

    公开(公告)日：1981-04-23

    申请号：JP11811579

    申请日：1979-09-14

    Applicant: SONY CORP

    Inventor： KUMAGAI TAKUYA ,  MISAO IKUO

    IPC: G11B15/43 ,  B65H23/18 ,  B65H59/38 ,  G11B15/46

    Abstract: PURPOSE:To control a tape speed and tension securely and easily even in high-speed tape running state by detecting the driving current of a take-up reel motor and by controlling the servo circuit of a supply reel motor by the output of the detection. CONSTITUTION:As the driving current of reel motor 1 varies with the load of the tape path system, the voltage across resistor 6 that detects the driving current of reel motor 1 varies and is compared to a reference voltage by voltage comparator 8, etc. Voltage comparator 8 decreases in output level when the detected voltage is greater than the reference voltage and increases when not. Therefore, as fluctuations of the load increase the driving current of reel motor 1, its rotating force also increases, but the back tension of reel motor 2 decreases to the contrary. Thus, constant rotating force torque is held and the constant speed of the take-up reel turntable can be attained. This constitution can exercise control over the tape speed and tension easily and securely even in high-speed tape run mode.

    TAPE REEL DRIVING DEVICE
    10.
    发明专利
    TAPE REEL DRIVING DEVICE 失效

    公开(公告)号：JPS5857647A

    公开(公告)日：1983-04-05

    申请号：JP15476781

    申请日：1981-10-01

    Applicant: SONY CORP

    Inventor： MISAO IKUO ,  KUMAGAI TAKUYA

    IPC: G11B15/00 ,  G11B15/18 ,  G11B15/48

    Abstract: PURPOSE:To start the traveling of a tape with no tape sag, by providing a means to drive at least one of a supply reel or a take-up reel for a certain period of time in the tape winding direction with a low torque. CONSTITUTION:A terminal of the contactless side of a motor 1 which drives a take-up reel of a tape recorder is connected to a commom terminal (mobile contact) C of a changeover switch 3 via a rotation start/stop changeover switch 2. The 1st power supply terminal 11 is connected to a switch terminal (a) at one side of the switch 3, and the voltage +V1 is supplied to the terminal (a), While, the 2nd power supply terminal 12 is connected to the other switch terminal (b), and the voltage +V2 is supplied to the terminal (b). A command signal for selection of fast forward mode, for example, is supplied to a signal input terminal 13. This command signal is supplied as a control signal to the switch 2 as well as to the switch 3 via a delaying means like a mono-multi 4, etc.

Patent Agency Ranking