RECORDING AND PLAYBACK DEVICE
    1.
    发明专利

    公开(公告)号:JPS56111176A

    公开(公告)日:1981-09-02

    申请号:JP1324480

    申请日:1980-02-06

    Applicant: SONY CORP

    Abstract: PURPOSE:To confirm easily an operation, by selectively display the output level and playback level of a power amplifier and a recording level by means of a level meter used in common. CONSTITUTION:When a tape recorder of a stereo set is in stop mode, switches 19, 20 are closed, and each level of the output signal SL of a power amplifier of L channel and the output signal SR of the power amplifier of R channel is displayed on meters 24, 25 via meter detection circuits 22, 23. Next, in playback mode, the playback signals SL, SR are displayed on the meters 24, 25. Further, when the switch 26 is closed, the level of a recording signal SLF and a playback signal SRF is displayed on the meters 24, 25. Further, in a stop mode, the signal fed to a speaker is selected.

    AUTOMATIC REVERSING DEVICE FOR MAGNETIC TAPE OF TAPE RECORDER

    公开(公告)号:JPS5528515A

    公开(公告)日:1980-02-29

    申请号:JP10000278

    申请日:1978-08-18

    Applicant: SONY CORP

    Abstract: PURPOSE:To secure the mutual and continuous switching in a simple and assured way between the reproduction mode and the rewinding mode by combining the counter switch and the switch to designate the action of the magnetic tape running reproduction circuit, the rewinding circuit and others. CONSTITUTION:When reproduction mode switch 4 is closed, the output signal of the reproduction circuit is supplied to the input terminals of AND gates 8 and 19. And the magnetic tape runs up to the position where the counter has the 0-set. At this moment counter switch 15 operates, and the corrent supplied to terminal 14 is supplied to the input terminal of gate 8 and then supplied to the input side of rewinding circuit 3 via switch 18. In such way, the magnetic tape is rewound, and detection output 21 is supplied to AND circuit 20 when the tape reaches the starting end. This output is then supplied to reproduction circuit 1 via switch 23 to make the tape run again. This action is repeated automatically.

    Btl amplifier circuit
    4.
    发明专利
    Btl amplifier circuit 失效
    BTL放大器电路

    公开(公告)号:JPS59146207A

    公开(公告)日:1984-08-22

    申请号:JP1972883

    申请日:1983-02-10

    Applicant: Sony Corp

    Abstract: PURPOSE: To reduce switching noise and to omit a coupling capacitor by providing a changeover switch to an input side of an amplifier circuit so as to change over the gain of an amplifier circuit as well as power at the same time.
    CONSTITUTION: When a switch S is closed, an input signal is amplified univertedly at the 1st amplifier circuit 10 and an output signal of the 2nd amplifier circuit 20 is zero at first. Thus, a load 30 is driven by an output signal of the 1st amplifier circuit 10 changed in both polarities around a DC level taken as 0. When the switch S is opened, a feedback voltage of the 1st amplifier 10 is applied to an inverting input terminal of the 2nd amplifier circuit 20, which acts like an inverse amplifier. Since the DC level of an output terminal is unchanged depending on the closing/opening of the switch S in this case, a signal voltage of an output terminal in the BTL amplifier circuit is not fluctuated even if the 1st and the 2nd amplifier circuits 10, 20 are operated and when only the 1st amplifier circuit 10 is operated.
    COPYRIGHT: (C)1984,JPO&Japio

    Abstract translation: 目的:为了降低开关噪声,并通过向放大器电路的输入侧提供切换开关来省略耦合电容器,以便同时改变放大器电路的增益以及功率。 构成:当开关S闭合时,输入信号在第一放大器电路10被放大一半,第二放大器电路20的输出信号首先为零。 因此,负载30由第一放大器电路10的输出信号驱动,在两个极性中,在DC电平周围变化为0。当开关S断开时,第一放大器10的反馈电压被施加到反相输入 第二放大器电路20的端子,其类似于反相放大器。 由于在这种情况下,由于输出端子的直流电平取决于开关S的闭合/断开而不变,所以即使第一和第二放大器电路10,...,BTL放大器电路中的输出端子的信号电压也不会波动, 只有第1放大器电路10被操作才被操作。

    Timer device of electronic apparatus
    5.
    发明专利
    Timer device of electronic apparatus 失效
    电子设备定时器

    公开(公告)号:JPS58215579A

    公开(公告)日:1983-12-15

    申请号:JP9848882

    申请日:1982-06-10

    Applicant: Sony Corp

    CPC classification number: G04F1/005

    Abstract: PURPOSE:To eliminate the need for any timer transformer, rectifier circuit, etc., to improve a space factor and to solve the problem of safety standards, by supplying the driving electric current for a relay with a battery of small capacity and a power source of a main transformer. CONSTITUTION:When the signal of an H level is outputted from a timer circuit 15 at the point of the time Ton, a transistor Q1 turns on; at the same time, electric current flows to the base of a transistor (TR) Q6 and the TR Q6 goes on. Then, the voltage of a battery E is supplied to a relay 20 through the TR Q6, and turns a power source switch SW on. An AC voltage is then supplied through a main transformer 12 and the DC voltage of a rectifier circuit 13 flows through a diode D1 and a resistor (r) to the relay 20 to maintain the on-state thereof. This DC voltage is so applied as to be reverse-biased to the base of the TR Q6; therefore, the TR Q6 inverts to off.

    Abstract translation: 目的:为了消除任何定时变压器,整流电路等的需要,通过为具有小容量电池的继电器和电源提供驱动电流来提高空间因素并解决安全标准的问题 的主变压器。 构成:当在时间Ton处从定时器电路15输出H电平的信号时,晶体管Q1导通; 同时电流流向晶体管(TR)Q6的基极,TR Q6导通。 然后,通过TR Q6将电池E的电压提供给继电器20,并使电源开关SW接通。 然后通过主变压器12提供交流电压,整流电路13的直流电压通过二极管D1和电阻器(r)流到继电器20,以保持其导通状态。 该直流电压被施加以反向偏置到TR Q6的基极; 因此,TR Q6反转为关闭。

    ELECTRONICCCONTROLLED COOKING MACHINE

    公开(公告)号:JPS54142637A

    公开(公告)日:1979-11-07

    申请号:JP4989678

    申请日:1978-04-28

    Applicant: SONY CORP

    Abstract: PURPOSE:To provide a cooking machine with a mechanism, designed capable of reproducing vocal instructions on cooking steps and procedure which are pre- recorded into a prescribed recording medium, so that a user can operate it simply by following the vocal instructions without bothering to read a text book, etc. CONSTITUTION:A cover 1 of a cooking card 2 is provided with written instructions on cooking procedures and finishes, etc., in a form similar to that of the cooking card. Cabinet side of the card is provided with magnetic tapes 2a through 2c in which the vocal instructions (on cooking steps and procedures) are recorded, and the opposite side of the tapes is provided with windows. When a START button is pressed, head-feeding shafts 5 and 5' are turned, a head-attaching table 6 is shifted toward the right, a vocal instruction recorded in 2a, etc., of a magnetic card 2 is converted into an electric signal by a reproducing head 10 and the vocal instruction is reproduced through a speaker 11. A user is to listen to a vocal instruction on Step 1 and operate Step 1, and then, a button 17 is pressed to advance to Step 2. In this fashion, a user is able to operate accurate cooking without bothering to read a text book, etc.

    RECORD PLAYER
    7.
    发明专利

    公开(公告)号:JPS5494303A

    公开(公告)日:1979-07-26

    申请号:JP1207078

    申请日:1978-02-06

    Applicant: SONY CORP

    Abstract: PURPOSE:To enable pickup arm to be freely manually elevated even when the automatic elevating mechanism is actuating by providing a changeover means which lets a manual elevating mechanism for manual elevating actuate in preference to the automatic elevating mechanism. CONSTITUTION:When an operating lever 61 is in the down position A, a lifter rod 43 has lowered and a pickup arm 7 is in the down position. When the operating lever 61 is oscillated to the up position B, a lifter lever 48 is turned upward against pulling sprint 54 by a lifter cam 57, by which the pickup arm 7 is ascended. An interlock system plunger 63 for automatic elevating of the pickup arm is provided in the lower part of the lifter cam 51 and a changeover means 66 which is so arranged as to disconnect the driving by the interlock system of the pickup arm 7 by de- energizing the interlock system plunger 63 is provided between the pulling plate 64 of the plunger 63 and an interlock lever 65.

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