公开(公告)号：US3742128A

公开(公告)日：1973-06-26

申请号：US3742128D

申请日：1972-02-25

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： WAKAI S ,  SUGANO H

IPC: H04N9/68 ,  H04N9/48

CPC classification number: H04N9/68

Abstract: A chrominance saturation control circuit to permit indirect or DC mode control of chrominance saturation. The connection between the chrominance saturation control knob in a television receiver and the chrominance saturation control circuit can be achieved through wiring which transmits only DC voltage. With this DC controlled chrominance saturation control, the television set may be made less susceptible to external interference compared to the case of using a shielded wiring for directly controlling the chrominance saturation.

Abstract translation: 色度饱和控制电路允许间接或直流模式控制色度饱和度。 电视接收机中的色度饱和度控制旋钮与色度饱和度控制电路之间的连接可以通过只传输直流电压的布线来实现。 利用该直流控制色度饱和度控制，与使用屏蔽布线直接控制色度饱和度的情况相比，电视机可能不易受到外部干扰。

公开(公告)号：US3714598A

公开(公告)日：1973-01-30

申请号：US3714598D

申请日：1971-03-22

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： WAKAI S ,  NABAE M

IPC: H03G3/20 ,  H03G3/30 ,  H03G3/34 ,  H04N5/53

CPC classification number: H04N5/53 ,  H03G3/3052 ,  H03G3/345

Abstract: An AGC amplifier having a Darlington pair as a noise gate circuit for preventing the development of unwanted AGC outputs due to noise pulses. The Darlington pair develops a larger overdrive with the same base current than if a single transistor is employed, so a longer storage time of the transistors results, lengthening the gate period. This makes available an AGC amplifier circuit with a noise gate circuit whose gate period is longer without using a capacitor, thereby providing a convenient means for application to monolithic integrated circuits.

公开(公告)号：US3772463A

公开(公告)日：1973-11-13

申请号：US3772463D

申请日：1972-02-24

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： WAKAI S ,  SUGANO H

IPC: H04N9/68 ,  H04N9/71 ,  H04N9/48

CPC classification number: H04N9/71 ,  H04N9/68

Abstract: A chrominance amplifier circuit, adapted to be formed in a monolithic integrated circuit, in which an automatic gain control function is performed by a circuit arrangement containing no capacitor, the automatic gain control function having no influence on the bandwidth characteristic of the amplifier so that the chrominance amplification operation can be stably performed.

Abstract translation: 一种色度放大器电路，适于形成在单片集成电路中，其中通过不含电容器的电路装置执行自动增益控制功能，所述自动增益控制功能对放大器的带宽特性没有影响， 可以稳定地进行色度放大操作。

公开(公告)号：US3730978A

公开(公告)日：1973-05-01

申请号：US3730978D

申请日：1972-03-22

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： WAKAI S ,  SUGANO H

IPC: H04N9/70 ,  H04N9/48

CPC classification number: H04N9/70

Abstract: A color killer circuit in which means are provided so as to carry out a stable color killing operation free from fluctuations in power supply voltage so that the color killing operation may not be directly affected by the absolute value of the color killer control voltage.

Abstract translation: 一种彩色抑制电路，其中提供了用于执行没有电源电压波动的稳定的彩色消除操作的装置，使得除色操作可能不会直接受到彩色抑制器控制电压的绝对值的影响。

公开(公告)号：SE343675B

公开(公告)日：1972-03-13

申请号：SE179768

申请日：1968-02-12

Applicant: MATSUSHITA ELECTRONICS CORP

Inventor： WAKAI S ,  KOBAYASHI T

IPC: F25D29/00 ,  G05D23/24 ,  F25D21/08

Abstract: 1,193,911. Refrigerating; defrosting. MATSUSHITA ELECTRONICS CORP. 9 Jan., 1968 [13 Feb., 1967], No. 1230/68. Heading F4H. [Also in Division G3] A refrigerator particularly of a domestic type has at least one main compartment and at least one freezing compartment and at least one common evaporator connected to a compressor. In one phase of operation a compressor motor 45 is controlled by a thermistor 27 in the main compartment and in a selectively alternative freezing phase the motor 45 is controlled by a thermistor 37 in the freezing compartment and the temperature in the main compartment is adjusted by a heater 44 controlled by thermistor 27. A defrosting phase is also incorporated which is terminated by the thermistor 37 switched to provide a different temperature range. In position a, b of a switch G thermistor 27 controls motor 45 through a transistor 28 and relay 31 to regulate the main compartment temperature. Periodically e.g. once per 24 hours a timer motor 50 momentarily closes a switch 49 energizing a winding 47 of a defrosting valve and a relay 51, which is held over contacts B which shunt contacts 49, contacts A energizing motor 45 causing hot gas to be passed through the evaporator. When the temperature rises to a point determined by thermistor 37, a relay 41 is energized opening contacts f, g which disconnects the defrosting valve and relay 51, and closing contacts e, f re-energizing motor 45 until the temperature falls so that relay 41 de energizes. In position a, c, of switch G the motor 45 is controlled by thermistor 37 switched to a lower temperature range through a transistor 48 and relay 41. As the main compartment temperature drops below the operating point of transistor 28, heater 44 is energized through contacts f, g of relay 31 to maintain this temperature. In an alternative arrangement Fig. 3 (not shown), a heater (52) replaces the defrosting valve and motor 45 is not run during the defrosting period.