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1. 发明专利

JPH0537948A PROJECTION TYPE DISPLAY DEVICE 失效
公开(公告)号：JPH0537948A
公开(公告)日：1993-02-12
申请号：JP19396091
申请日：1991-08-02
申请人： SHARP KK
发明人： MORI KAZUYOSHI
IPC分类号： H04N3/223 , H04N9/31
摘要： PURPOSE:To improve picture quality and to extend the service life of this projection type display device by sharing liquid crystal panels (image projectors) for both a standard signal and a high-vision signal and effectively utilizing all picture elements even in the case of the high-vision signals. CONSTITUTION:The aspect ratio of the liquid crystal panels 16R, 16G, 16B is 3:4, and in the case of inputting a high-vision signal with 9:16 aspect ratio, the high-vision signal is compressed to 3/4 in the horizontal scanning direction by means of a panel controller 18 and an image obtained from a projection lens 34 is expanded to 4/ 3 by an anamorphic lens 36.

2. 发明专利

JPH04247791A WHITE CLIP CIRCUIT AND TELEVISION RECEIVER 失效
公开(公告)号：JPH04247791A
公开(公告)日：1992-09-03
申请号：JP3364791
申请日：1991-02-01
申请人： SHARP KK
发明人： MORI KAZUYOSHI
IPC分类号： H04N9/68
摘要： PURPOSE:To prevent a change in a white color on a screen by changing a clip level in response to a peak level of a video signal so as to always implement white clip to a high level input signal at the white level. CONSTITUTION:An input video signal is given to a peak detecting circuit 11 from a buffer 8 via a clamp circuit 9 and a time constant circuit 10 and fed to a control circuit 12 after peak detection. An average beam current from a beam current detecting circuit 14 having a function obtaining a beam current obtained from a flyback transformer 13 as an average beam current for each prescribed period is given to the control circuit 12. The control circuit 12 generates a signal to control a white clip circuit 7 by using the peak detection output and the average beam current as input information. In this case, a control signal is generated so as to implement white clip when a peak detection output of a video signal is large or the average beam current is large.

4. 发明专利

JPS58107780A RECEIVER FOR SOUND MULTIPLEX BROADCAST 失效
公开(公告)号：JPS58107780A
公开(公告)日：1983-06-27
申请号：JP20762981
申请日：1981-12-21
申请人： SHARP KK
发明人： MORI KAZUYOSHI
IPC分类号： H04H1/00 , H04H20/88 , H04H40/36 , H04N5/60
摘要： PURPOSE:To obtain two L and R signals without an amplifier, by receiving stereo information of (L+R)/2 and R transmitted on two channels and processing signals through the combination of an adder and a subtractor. CONSTITUTION:In receiving a stereo broadcast, a mode changeover switch 10 is selected as shown in figure, and a signal of (L+R)/2 applied to an input terminal 11 is supplied to a subtractor 8 and an adder 9. An R signal applied to an input terminal 12 is given to the subtractor 8 and a signal of (L-R)/2 is introduced. This signal is summed with the (L+R)/2 at the adder 9 and an L signal is obtained at an output terminal 13. In case of the bilingual broadcast, a signal M1 is applied to the terminal 11, and a signal M2 is to the terminal 12. Since the mode changeover switch 10 is selected to the 10a position, the subtraction by the subtractor 8 is not done, and the signals M1, M2 are outputted as they are at the output terminals 13 and 14.

5. 发明专利

JPH04109289A LIQUID CRYSTAL DISPLAY DEVICE FOR HIGH DEFINITION 失效
公开(公告)号：JPH04109289A
公开(公告)日：1992-04-10
申请号：JP22894990
申请日：1990-08-30
申请人： SHARP KK
发明人： MORI KAZUYOSHI
IPC分类号： G09G3/36 , H04N5/66
摘要： PURPOSE:To reduce the circuit scale and the cost by supplying a video signal to two source drivers in common and making sampling clocks 180 deg. out of phase with each other. CONSTITUTION:Picture elements 12a which are arranged on odd number lines among delta-arranged picture elements 12 are driven with a video signal SV which is supplied to a 1st source driver 16a and picture elements 12b which are arranged on even number lines are driven with a video signal supplied to a 2nd source driver 16b. Those video signals SV are sampled with the two sampling clocks which are 180 deg. out of phase with each other. Consequently, a liquid crystal display element 10 is driven equivalently with a video signal substantially after double-peed conversion and the liquid crystal display device for double-speed conversion can be constituted without using any scanning converting circuit 30 and is reduced in cost.

6. 发明专利

JPH0480736A AUTOMATIC FOCUSING SYSTEM FOR LIQUID CRYSTAL PROJECTOR 失效
公开(公告)号：JPH0480736A
公开(公告)日：1992-03-13
申请号：JP19438390
申请日：1990-07-23
申请人： SHARP KK
发明人： MORI KAZUYOSHI
IPC分类号： G03B21/53 , G02B7/28 , G03B21/00
摘要： PURPOSE:To obtain a high-definition image by taking focus by one sheet of reference liquid crystal panel and aligning the positions of the other two sheets of liquid crystal panels with the position of the reference liquid crystal panel. CONSTITUTION:A means which takes the focus of one sheet of the reference liquid crystal panel and aligns the positions of the other two sheets of liquid crystal panels with the reference liquid crystal panel is provided. That means, infrared rays projected from a light projection part 16a are reflected on a screen 17 and the reflected infrared rays are received by a light receiving part 16b. Then, the angle (theta) thereof is measured and the distance (l) thereof is detected. According to the detected value, a servo mechanism incorporated in an automatic focusing device 16 is driven and the focus of a projection lens 13 is adjusted. The focus of the lens 13 is adjusted to the focusing distance of the reference liquid crystal panel 9R. Thus, the high-definition image that the focus of three sheets of liquid crystal panels is aligned.

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