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21. 发明专利

JPH0329354B2 失效
公开(公告)号：JPH0329354B2
公开(公告)日：1991-04-23
申请号：JP23800184
申请日：1984-11-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KURATA TAKATSUGU , YOSHIDA TOSHIFUMI , INOHARA SHIZUO , UEDA MINORU
IPC分类号： H04N5/68 , H01J31/12 , H04N5/66

22. 发明专利

JPS61248234A OPTICAL DISK DEVICE 失效
公开(公告)号：JPS61248234A
公开(公告)日：1986-11-05
申请号：JP9000185
申请日：1985-04-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIDA TOSHIFUMI , NISHINAKA YASURO , MORIYA MITSURO , NANBAE MITSUO
IPC分类号： G11B7/09
摘要： PURPOSE:To reduce the value of an offset voltage and to attain accurate servo control by forming an input differential amplifier to be switched at the time of recording/reproducing operation in a dividing circuit. CONSTITUTION:A gain control amplifier is controlled by a gain control voltage of an AGC circuit to execute dividing operation and the input differential amplifier in said gain control amplifier is switched at the time of recording/ reproducing operation. Namely, the dynamic range of the input differential amplifier is determined by emitter resistance R18 and the current capacity I0 of a current source. The maximum gain of the gain control amplifier is determined by 2.R27/R18. Since a difference of about 4 times e.g. is generated between a focus error signal FE and a light quantity sum signal AS at the time of recording/reproducing operation, the dynamic range and the maximum gain of the recording input differential amplifier may be set up to 4 times and 1/4 respective values of the reproducing input differential amplifier to obtain the same outputs as divided outputs and the two input differential amplifiers are switched when emitter resistance values R8, R18 are set up to 2kOMEGA and 400OMEGA.

23. 发明专利

JPS61236033A OPTICAL DISK DEVICE 失效
公开(公告)号：JPS61236033A
公开(公告)日：1986-10-21
申请号：JP7561585
申请日：1985-04-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHIDA TOSHIFUMI , SAKAI SATORU
IPC分类号： G11B7/09 , G11B7/085
摘要： PURPOSE:To reduce cost by detecting voltage level of +VCC1 and -VCC2, and cutting off a focus controlling signal when either of them does not reach specified voltage and preventing collision of an optical system device against the disk face at the time of turning on and off of a power source. CONSTITUTION:A +VCC1 detecting circuit 1 detects that a controlling circuit 5 arrived at a voltage or above by which the circuit can operate normally, and a -VCC2 detecting circuit detects that the controlling circuit 5 is at a voltage or above by which the circuit can operate normally, and supplies detection output. When the two are satisfied, output of an AND circuit, that is, a controlling signal 8 goes to high level, and focus controlling signals 9a, 9b detected by an optical system 4 and processed by the controlling circuit 5 are transmitted to an actuator driving circuit 6. When the controlling signal 8 is low level, the signal of the controlling circuit 5 is not transmitted to the actuator driving circuit 6, and both ends of an actuator 7 become the same potential and current does not flow. Thus, a protective circuit at the time of power source on and off of an optical disk device can be realized with very small number of parts.

24. 发明专利

JPS6130474B2 失效
公开(公告)号：JPS6130474B2
公开(公告)日：1986-07-14
申请号：JP10416181
申请日：1981-07-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FURUHASHI MICHIO , TSUNASHIMA KENICHI , YOSHIDA TOSHIFUMI
IPC分类号： H04N9/64 , H04N9/68

25. 发明专利

JPS61141212A Amplifier 失效
标题翻译：放大器
公开(公告)号：JPS61141212A
公开(公告)日：1986-06-28
申请号：JP26383884
申请日：1984-12-14
申请人： Matsushita Electric Ind Co Ltd
发明人： SAKAI SATORU , YOSHIDA TOSHIFUMI , NISHINAKA YASURO
IPC分类号： H03F3/34 , G11B19/20 , H03F3/04 , H03F3/68
摘要： PURPOSE: To obtain a double load current from a conventional voltage-current conversion type amplifier by inputting an in-phase voltage respectively to two operational amplifiers and giving a difference to each feedback amount.
CONSTITUTION: An in-phase signal is inputted to the operational amplifiers A
1 , A
2 and the feedback amount of the operational amplifier A
1 is increased more than that of the operational amplifier A
2 . A potential difference is generated in a current sensing resistor by the difference of the feedback amounts. Then the phase of a load current IL is independently of a load element RL but dependent on the current sensing resistor R
3 and a differential voltage is impressed to the load element RS. Thus, a double load current is obtained from a conventional voltage-current conversion type amplifier.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过分别向两个运算放大器输入同相电压并给每个反馈量差异，从传统的电压 - 电流转换型放大器获得双重负载电流。构成：向运算放大器A1，A2输入同相信号，运算放大器A1的反馈量比运算放大器A2的反馈量增加。通过反馈量的差异，在电流感测电阻器中产生电位差。然后，负载电流IL的相位独立于负载元件RL，但是依赖于电流感测电阻器R3，并且差分电压施加到负载元件RS。因此，从传统的电压 - 电流转换型放大器获得双重负载电流。

26. 发明专利

JPS6118390B2 JPS6118390B2 - 失效
公开(公告)号：JPS6118390B2
公开(公告)日：1986-05-12
申请号：JP16059781
申请日：1981-10-07
申请人： Matsushita Electric Ind Co Ltd
发明人： SASABE KAORU , YOSHIDA TOSHIFUMI
IPC分类号： H04N5/60 , H04N5/445
CPC分类号： H04N5/45

27. 发明专利

JPS6161519A Analog switch circuit 失效
标题翻译：模拟开关电路
公开(公告)号：JPS6161519A
公开(公告)日：1986-03-29
申请号：JP18401284
申请日：1984-09-03
申请人： Matsushita Electric Ind Co Ltd
发明人： YOSHIDA TOSHIFUMI , NISHINAKA YASURO
IPC分类号： H03K17/62
CPC分类号： H03K17/6257
摘要： PURPOSE:To make the circuit suitable for circuit integration and to switch an analog signal with high accuracy by turning on/off each current source of the 1st and 2nd differential amplifiers respectively and extracting the 1st and 2nd input signals at an output terminal of the 1st and 2nd differential amplifiers. CONSTITUTION:TRs Q15, Q16 and R17, R18, R16, R8 and R14 constitute a power supply operating two current sources and apply a reference voltage to a differential amplifier forming a switching signal by a signal VCON controlling an analog switch. The TRQ17, Q18 and resistors R19, R20, R21, R22 constitute the differential amplifier, and when the signal VCON is higher than a base voltage of the TRQ14, the TRQ17 is turned on, the TRQ6 is turned on and the TRQ14 is turned off. As a result, an input signal VSB is given to the output. When the level of the signal VCON is lower than the base voltage of the TRQ17, an input signal VSA us outputted.
摘要翻译：目的：为了使电路适合于电路集成，并通过分别打开/关闭第一和第二差分放大器的每个电流源并以第一和第二差分放大器的输出端提取第一和第二输入信号，并以高精度切换模拟信号和第二差分放大器。构成：TRs Q15，Q16和R17，R18，R16，R8和R14构成操作两个电流源的电源，并通过控制模拟开关的信号VCON将参考电压施加到形成开关信号的差分放大器。 TRQ17，Q18和电阻R19，R20，R21，R22构成差分放大器，当信号VCON高于TRQ14的基极电压时，TRQ17导通，TRQ6导通，TRQ14关闭。结果，输出信号VSB被给予输出。当信号VCON的电平低于TRQ17的基极电压时，输出信号VSA us。

28. 发明专利

JPS60214176A Picture display device 失效
标题翻译：图像显示设备
公开(公告)号：JPS60214176A
公开(公告)日：1985-10-26
申请号：JP7152684
申请日：1984-04-09
申请人： Matsushita Electric Ind Co Ltd
发明人： YOSHIDA TOSHIFUMI , UEDA MINORU , NAGAI HIROYUKI
IPC分类号： H04N5/68 , G09G1/20 , H01J31/12 , H04N5/66 , H04N9/12 , H04N9/16
摘要： PURPOSE: To improve the stabilization of an electron beam by changing a potential of a back side electrode so as to cancel equivalently the change in an electric field around a line cathode.
CONSTITUTION: A conductor thin film 85 is provided terminal electrodes 83', 84 at both ends and the middle part in parallel with the lengthwise direction of the line cathode and a notch 86 is formed by cutting it at other parts. In this case, the mutual interval of the notch 86 is made broad at the center part and the mutual interval is narrowered for the notch 86 toward both ends 83' so as to increase the change in the resistance value. The cut width of the notch 86 is made sufficient narrower so as not to ununiform the electric field near the line cathode. The mutual width of the notch 86 is narrowered as much as possible not to cause any problem for the difference of potential distribution in upper and lower directions of the conductor thin film 85 and the notch 86 is made long and thin. In impressing a feedback signal to the terminal electrodes 83', 84, the potential gradient in the lengthwise direction of the line cathode is a sinusoidal wave form and a feedback similar to the amplitude form of the line cathode is attained.
COPYRIGHT: (C)1985,JPO&Japio
摘要翻译：目的：通过改变背面电极的电位来改善电子束的稳定性，以便等效地消除线阴极周围电场的变化。构成：导体薄膜85在与阴极的长度方向平行的两端和中间部分设置有端子电极83'，84，并且通过在其它部分切割形成凹口86。在这种情况下，凹口86的相互间隔在中心部分变宽，并且凹口86的相互间隔朝向两端83'变窄，以增加电阻值的变化。切口86的切割宽度足够窄，以便不使线阴极附近的电场不均匀。切口86的相互宽度尽可能窄，不会对导体薄膜85的上下方向的电位分布的差异产生任何问题，并且凹口86被制成长而薄。在向端子电极83'，84施加反馈信号时，线阴极的长度方向上的电位梯度为正弦波形，并且获得类似于线阴极的振幅形式的反馈。

29. 发明专利

JPS60154788A DEVICE FOR DISPLAYING PICTURE 失效
公开(公告)号：JPS60154788A
公开(公告)日：1985-08-14
申请号：JP997384
申请日：1984-01-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KURATA TAKATSUGU , YOSHIDA TOSHIFUMI , SAKAI SATORU , UEDA MINORU
IPC分类号： H04N5/68 , H01J31/12 , H04N5/66
摘要： PURPOSE:To shorten a warm up period by heating a line cathode by using a warm up power source while emission amount from the line cathode is small. CONSTITUTION:Immediately after power is turned on, no power flows a vertical focus electrode 11 because a line cathode 2 is cool and is in a state of no emission; the output of a comparator 55 goes to H; a transistor 54a is turned on; and a transistor 54b is turned off. The power supply of the line cathode drive circuit 52 is connected to an initial heat power source 53 about 200% higher in voltage than a power source 50, then the line cathode 2 is heated rapidly. The line cathode 2 then starts emission to increase current flowing the electrode 11, and when the output of the comparator 55 goes to L, the transistor 54a is turned off and equally 54b turned on, returning to a normal action.

30. 发明专利

JPS5943034B2 JPS5943034B2 - 失效
公开(公告)号：JPS5943034B2
公开(公告)日：1984-10-19
申请号：JP13540677
申请日：1977-11-10
申请人： Matsushita Electric Ind Co Ltd
发明人： SASABE KAORU , YOSHIDA TOSHIFUMI
IPC分类号： H03G1/00 , H03G1/02 , H04N5/00 , H04Q9/00

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