公开(公告)号：JPS60130981A

公开(公告)日：1985-07-12

申请号：JP24007683

申请日：1983-12-20

Applicant: SONY CORP

Inventor： MATSUZAKI ATSUSHI ,  SAITOU MITSUMASA

IPC: H04N5/59 ,  H04N9/31

Abstract: PURPOSE:To detect accurately a beam current by providing a current supply circuit to the current side of a cathode of a cathode-ray tube and a current lead-in circuit to the ground side so as to subtracts a current applied from the current supply circuit from the current of the current lead-in circuit. CONSTITUTION:A drive circuit of the cathode of the cathode-ray tube 1 is divided into two systems; one is the current supply circuit 3a supplying current only and the current lead-in circuit 3b leading in the current only. When a high frequency signal is inputted as the signal, charge/discharge is applied to a parasitic capacitance 10. A charging current Ic to the parasitic capacitance 10 is supplied from the current supply circuit 3a. The addition of a current Ic from the parasitic capacitance 10 to a beam current Ib is led to the current lead-in circuit 3b. Thus, the beam current Ib is detected by subtracting the current Ic applied from the current supply circuit 3a from the current (Ib+Ic) lead-in to the current lead- in circuit 3b.

公开(公告)号：JPS60194894A

公开(公告)日：1985-10-03

申请号：JP5164684

申请日：1984-03-16

Applicant: Sony Corp

Inventor： SAITOU MITSUMASA ,  MATSUZAKI ATSUSHI ,  OKADA TAKAFUMI

IPC: H04N9/31

Abstract: PURPOSE: To obtain a reproducing picture with high luminance and high resolution by making a read speed of a frame memory from a deflection speed of a cathode ray tube in response to the after glow characteristic of plural cathode ray tubes so as to decrease the beam spot size.
CONSTITUTION: A video signal Sv obtained from a detection circuit 10 is subject to A/D conversion and fed to a matrix circuit 13. Each primary color signal of red/green/blue is obtained fromthe matrix circuit 13 and fed to frame memories 15R, 15G, 15B being components of the converting circuit respectively. The signal from the frame memories 15R, 15G, 15B is read based on the output from control circuits 21R, 21G, 21B and the primary color signals of red/green/blue is read respectively in four multiple speed from the memory 15r, in a double speed from the memory 15G and in eight-time speed from the memory 15B. The primary color signals are subject to D/A conversion and fed to cathode ray tubes 6R, 6G and 6B and also the deflection speed of each cathode ray tube is controlled in response to the said read speed.
COPYRIGHT: (C)1985,JPO&Japio

Abstract translation: 目的：通过响应于多个阴极射线管的辉光特性使得从阴极射线管的偏转速度获得帧存储器的读取速度以获得高亮度和高分辨率的再现图像，以便减少光束点 尺寸。 构成：从检测电路10获得的视频信号Sv进行A / D转换并馈送到矩阵电路13.红/绿/蓝的原色信号从矩阵电路13获得并馈送到帧存储器15R， 15G，15B分别是转换电路的部件。 基于来自控制电路21R，21G，21B的输出读取来自帧存储器15R，15G，15B的信号，并且从存储器15r分别以四倍速读取红色/绿色/蓝色的原色信号， 来自存储器15G的双倍速度和来自存储器15B的八次速度。 原色信号进行D / A转换并馈送到阴极射线管6R，6G和6B，并且响应于所述读取速度控制每个阴极射线管的偏转速度。

公开(公告)号：JPS57123718A

公开(公告)日：1982-08-02

申请号：JP917581

申请日：1981-01-24

Applicant: Sony Corp

Inventor： SAITOU MITSUMASA ,  TSURUMARU SHINOBU

IPC: H03J5/02 ,  H03J7/02 ,  H04N5/44

CPC classification number: H03J5/0254

Abstract: PURPOSE:To prevent the malfunction of a front frequency divider by inserting a filter, which attenuates a higher-harmonic component contained in a local oscillation output, between the amplitude-limiting amplifier and front frequency divider of a PLL frequency synthesizer channel-selecting circuit. CONSTITUTION:A power-source switching circuit 4 is controlled by an U/V switching control signal from a channel-selecting operation part 3 to put an UHF local oscillator 1 or a VHF local oscillator 2 in operation, and its output is inputted to an amplitude-limiting amplifier 7 through a filter 5 or 6. A signal processed through the amplitude-limitation of the amplifier is removed from higher harmonic through a higer-harmonic removing filter 13 and inputted to a front frequency divider 8. A signal whose frequency is divided by N by the frequency divider 8 is further divided by a variable frequency divider 9 at a frequency-division ratio 1/n which corresponds to the channel selection signal T of the channel-selecting operation part 3, and its output is compared with a signal from a reference oscillator 11 by a phase comparator 10. The output of the comparator 10 is supplied as a channel selection signal VC to the oscillator 1 or 2 through an LPF12. The outputs of the oscillators 1 and 2 are supplied to a mixer respectively.

Abstract translation: 目的：通过插入PLL频率合成器通道选择电路的限幅放大器和前置分频器之间的滤波器来防止前分频器的故障，该滤波器会衰减本地振荡输出中包含的高次谐波分量。 构成：电源切换电路4由来自频道选择操作部分3的U / V切换控制信号控制，使UHF本地振荡器1或VHF本地振荡器2工作，并将其输出输入到 通过滤波器5或6通过幅度限制放大器7.通过高次谐波去除滤波器13从放大器的振幅限制处理的信号从高次谐波去除，并输入到前分频器8.频率为 由分频器8除以N，以与频道选择操作部分3的频道选择信号T相对应的分频比1 / n进一步除以可变分频器9，并将其输出与 信号通过相位比较器10从参考振荡器11输出。比较器10的输出通过LPF12作为通道选择信号VC提供给振荡器1或2。 分别将振荡器1和2的输出提供给混频器。

公开(公告)号：JPS5767345A

公开(公告)日：1982-04-23

申请号：JP14314980

申请日：1980-10-14

Applicant: Sony Corp

Inventor： TADA MASAHIRO ,  OSADA YASUO ,  SAITOU MITSUMASA ,  OOUCHI KOUJI

IPC: H04J1/00 ,  H04B1/12 ,  H04B7/15

CPC classification number: H04B1/12

Abstract: PURPOSE:To easily and firmly eliminate a dispersal signal, by detecting the dispersal signal from information signals, superpasing this detected signal on a selecting signal by modulating the signal to a local oscillation signal and mixing the modulated local oscillation signal and a arrived signal. CONSTITUTION:A video signal including a dispersed signal outputted from a video amplifying circuit 21 is inputted to a clamp circuit 22 and at the same time, peak value is detected by a peak detection circuit 25 by phase-inverting a vertical synchronizing signal by an inversion circuit 24. Furthermore, the dispersal signal of delta wave is outputted in accordance with a vertical synchronizing signal sent from the curcuit 25 in a dispersal singnal detection circuit 26. This dispersal signal is fed to a local oscillation circuit 15 by superposing it on a selecting signal sent from a selecting circuit 27 and the local oscillation signal outputted from the circuit 15 is frequency modulated in the same direction as the dispersal signal. The frequency modulated local oscillation signal is added to a mixing circuit 14 and the dispersal signal inputted to the circuit 14 from a high frequency amplifying circuit 13 is eliminated.

Abstract translation: 目的：通过检测来自信息信号的扩散信号，能够容易且牢固地消除分散信号，通过将信号调制为本地振荡信号并将调制的本地振荡信号和到达信号进行混合，在选择信号上对该检测信号进行叠加。 构成：将包括从视频放大电路21输出的分散信号的视频信号输入到钳位电路22，同时由峰值检测电路25通过反相将垂直同步信号相位反相来检测峰值 电路24.此外，根据在分散式信号检测电路26中从电路25发送的垂直同步信号输出增量波的扩散信号。该分散信号通过将其叠加在选择上而被馈送到本地振荡电路15 从选择电路27发送的信号和从电路15输出的本地振荡信号在与分散信号相同的方向上进行频率调制。 频率调制的本地振荡信号被加到混合电路14，并且消除了从高频放大电路13输入到电路14的分散信号。

公开(公告)号：JPS60134570A

公开(公告)日：1985-07-17

申请号：JP24254183

申请日：1983-12-22

Applicant: SONY CORP

Inventor： MATSUZAKI ATSUSHI ,  SAITOU MITSUMASA

IPC: H04N5/59 ,  H04N9/31

Abstract: PURPOSE:To allow a picture tube to exhibit the lighting capability to the utmost while the safety of each CRT is secured by detecting each beam current from a cathode current of each CRT and providing an automatic luminance limit circuit based on the mean value and peak value of each detecting current. CONSTITUTION:When a video signal SV is fed to a terminal 4, the signal SV is fed to a signal processing circuit 5, from which red/green/blue signals are outputted. Then each chrominance signal is fed to a CRT1R or the like and a beam current IbR or the like is detected. When one of the currents IbR or the like reaches a limit beam current, any of transistors (TRs) 27R, 27G, 27B of a peak value ABL circuit 200 is turned on, a prescribed voltage VPABL is generated at a connecting point of each collector and this voltage is fed to a peak value ABL control terminal. Moreover, the current IbR flowing to the TR24 is integrated by a capacitor 25, from which an average current IbRA is obtained and the current is fed to an emitter of a TR36 via a resistor 35R from a terminal 34. This processing is similar to the green and blue CRT beam.