公开(公告)号：JPH03296030A

公开(公告)日：1991-12-26

申请号：JP9951790

申请日：1990-04-16

Applicant: SONY CORP

Inventor： OGAWA MASUMI

IPC: G03B33/12 ,  G03B21/00 ,  G09F9/00 ,  H04N9/31

Abstract: PURPOSE:To prevent a cost from increasing while keeping a high resolution by newly and independently providing a high-resolution liquid crystal panel for brightness component light. CONSTITUTION:The liquid crystal panel 4 where a brightness signal is supplied is provided separately from the liquid crystal panels 6-8 where a chrominance signal is supplied, and the outputted light beam from the liquid crystal panels 6-8 where the chrominance signal is supplied and the outputted light beam from the liquid crystal panel 4 where the brightness signal is supplied are synthesized. That is, light from a light source 1 is separated into S wave light having the component of a primary color and P wave light having only the component of the brightness. Then, the S wave is supplied to the liquid crystal panels 6-8 driven by the chrominance signal, and P wave is supplied to the liquid crystal panel 4 driven by the brightness signal. And the outputted light beams from the both panels 4 and 6-8 are synthesized and projected to reproduce a color image. In such a case, even though the resolution of the liquid crystal panels 6-8 driven by the chrominance signal is low, the resolution of the liquid crystal panel 4 driven by the brightness signal is high, the color image having the high resolution can be obtained. Thus, only one liquid crystal panel having the high resolution is enough so that the cost is prevented from increasing.

公开(公告)号：JPS6032383B2

公开(公告)日：1985-07-27

申请号：JP2034776

申请日：1976-02-26

Applicant: SONY CORP

Inventor： SAITO TAKAHIKO ,  OGAWA MASUMI

IPC: H04N5/44

公开(公告)号：JPS59138105A

公开(公告)日：1984-08-08

申请号：JP1166883

申请日：1983-01-27

Applicant: Sony Corp

Inventor： YAMAMOTO YOSHIHIRO ,  OGAWA MASUMI ,  WATANABE KAZUO ,  HIRABAYASHI ATSUSHI

IPC: H03F1/00 ,  H03G3/10

Abstract: PURPOSE: To utilize effectively a power supply voltage by providing a muting function to a current mirror circuit extracting an output signal as a current so as to eliminate the need for the transistor (TR) constitution of a constant current source.
CONSTITUTION: The current mirror is constituted when a muting drive voltage is almost equal to the power supply voltage, and then a TR27 is turned off. On the other hand, when the TR27 is turned on because the muting drive voltage goes to a low level, a collector voltage of the TR14 is increased by the voltage drop across a resistor 26 and the TR14 reaches the saturated region. Thus, a current I
0 flows from the collector of the TR28 to the emitter, TRs 12, 13 are turned off and the current mirror circuit is not constituted and a current I
1 goe to 0.
COPYRIGHT: (C)1984,JPO&Japio

Abstract translation: 目的：通过为电流镜电路提供静音功能来有效地利用电源电压，提取输出信号作为电流，从而消除对恒流源的晶体管（TR）构成的需要。 构成：当静音驱动电压几乎等于电源电压时，电流镜被构成，然后关断TR27。 另一方面，当TR27由于静音驱动电压变为低电平而导通时，TR14的集电极电压通过电阻器26上的电压降而增加，并且TR14达到饱和区域。 因此，电流I0从TR28的集电极流向发射极，TRs 12,13截止，电流镜电路不构成，电流I1变为0。

公开(公告)号：JPS58104579A

公开(公告)日：1983-06-22

申请号：JP20314281

申请日：1981-12-16

Applicant: SONY CORP

Inventor： OGAWA MASUMI

IPC: H04N5/62

Abstract: PURPOSE:To reduce buzz and buzz beat in an output of a sound circuit, by detecting amplitude components of an output signal of a phase comparator and eliminating steady-state phase error of a phase locked loop with the detection signal. CONSTITUTION:An output signal of a phase comparator 17 is applied to an amplifier 18, and the output signal of the amplifier 18 is applied to a positive signal detector 19 and a negative signal detector 20. Detected output signals of the detectors 19, 20 are applied to an adder 21, a signal summing the both is applied to the adder 21 to produce the signal of sum of the both and this summed signal is applied to a synthesizer 22, where the output signal of the adder 21 and the output signal from a phase comparator 17a are synthesized and applied to a DC amplifier 17b of a phase locked loop 17 with signal correction.

公开(公告)号：JPS52103914A

公开(公告)日：1977-08-31

申请号：JP2035376

申请日：1976-02-26

Applicant: SONY CORP

Inventor： SAITOU TAKAHIKO ,  OGAWA MASUMI

IPC: H04N5/44

Abstract: PURPOSE:To display the present time on a part of a TV picture by superposing a video signal corresponding to the present time obtained by a clock on a TV signal when the time preset by an engaged time setting unit is reached.

公开(公告)号：JPS5230323A

公开(公告)日：1977-03-08

申请号：JP10737975

申请日：1975-09-04

Applicant: SONY CORP

Inventor： OGAWA MASUMI

IPC: H04N5/21 ,  H04B1/10 ,  H04N5/08

Abstract: PURPOSE:To obtain a crcuit which effectively extracts noises within synchronization signals.

公开(公告)号：JPH09161725A

公开(公告)日：1997-06-20

申请号：JP32205795

申请日：1995-12-11

Applicant: SONY CORP

Inventor： OGAWA MASUMI ,  SAKAI KENZO

IPC: G02F1/13 ,  F21S2/00 ,  F21V11/00 ,  F21V14/00 ,  G02F1/1335 ,  G02F1/13357 ,  G03B21/00 ,  G03B21/14 ,  H01J61/50 ,  H01J61/88

Abstract: PROBLEM TO BE SOLVED: To improve condensing efficiency by improving a structure of a light source device such as a metal halide lamp. SOLUTION: A light source device is composed of a metal halide lamp 2 of a short arc, a lamp reflector 3 to turn the light into a parallel light flux by condensing it, a support cylinder part 4 and an electromagnet 5 arranged in an upper part of a back face part of the lamp reflector. When a line A of magnetic force horizontally orthogonal to the optical axis generated by the electromagnet 5 is impressed on a tubular bulb 6, a discharge arc is corrected in a straight line shape. Since a polarity reversing means is provided on the electromagnet 5, even in a condition where the light source device is inversely erected by 180 degrees, uniform brightness similar to normally erected time can be attained by switching the magnetic field direction to a line B of magnetic force from the line A of magnetic force.

公开(公告)号：JP2576557B2

公开(公告)日：1997-01-29

申请号：JP33068087

申请日：1987-12-26

Applicant: SONY CORP

Inventor： OGAWA MASUMI ,  HIRANO TAKESHI

IPC: H04N5/213 ,  H04N5/21

公开(公告)号：JPH06310939A

公开(公告)日：1994-11-04

申请号：JP9933893

申请日：1993-04-26

Applicant: SONY CORP

Inventor： KOMORI KENJI ,  HIRABAYASHI ATSUSHI ,  OGAWA MASUMI

IPC: H03D3/06 ,  H03D1/22 ,  H03D9/00 ,  H04N5/44

Abstract: PURPOSE:To eliminate the need for manual adjustment of components to make a reference frequency coincident with a modulation carrier frequency. CONSTITUTION:A phase comparator 3 receives the output of an f0 variable BPF 2 being a phase modulation means and converts a phase displacement into a voltage amplitude to provide a detection output and an LPF 5 obtains the DC offset voltage of a detection output. A voltage comparator 6 obtains the voltage difference between a DC offset voltage and the reference voltage and applies the voltage difference to the BPF 2 as a control voltage and the BPF 2 adjusts the reference frequency to be coincident with a carrier frequency of an input signal in response to a control voltage from the voltage comparator 6.

公开(公告)号：JPH04101595A

公开(公告)日：1992-04-03

申请号：JP21941590

申请日：1990-08-21

Applicant: SONY CORP

Inventor： OGAWA MASUMI

IPC: G02F1/1335 ,  G02F1/13 ,  G02F1/13357 ,  H04N9/31

Abstract: PURPOSE:To miniaturize a liquid crystal projector and elongate its life by providing plural liquid crystal light bulbs for reproducing a primary color picture with a primary color projecting light source, respectively, and forming the primary color projecting light source with a fluorescent light emission tube. CONSTITUTION:A liquid crystal projector 11 is constructed by arranging a primary color projecting light source made of a fluorescent light emission tube, namely, a red projection light source 13R, a blue projection light source 13B and a green projection light source 13G for a liquid crystal light bulb 12R for red, a liquid crystal light bulb 12B for blue and a liquid crystal light bulb 12G for green, respectively, so that the liquid crystal light bulbs 12R, 12B and 12G will be correspondingly irradiated with the primary colors of the respective light sources 13R, 13B and 13G. In this way, by arranging the primary color projecting light sources 13R, 13B and 13G made of the fluorescent light emission tubes for respective liquid crystal light bulbs 12R, 12B and 12G in place of a white light source and a spectroscopic optical system, the optical system can be simplified. Thus, the miniaturization of the liquid crystal projector 11 can be promoted and said projector 11 can be offered at a low price.