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41. 发明专利

JPH10206825A LIQUID CRYSTAL ELEMENT DRIVING METHOD 失效
公开(公告)号：JPH10206825A
公开(公告)日：1998-08-07
申请号：JP1079397
申请日：1997-01-24
申请人： CANON KK
发明人： KATAKURA KAZUNORI , IBA JUN , TSUBOYAMA AKIRA
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To realize a liquid crystal element whose picture quality is high and whose power consumption is low by using information signals which are different in the case information signals of different pixel displays are continued and in the case information signals of the same pixel displays are continued to suppress crosstalk. SOLUTION: An information signal having a pause period is used in a preceding information signal in the case information signals of different pixel displays are continued and also an information signal consisting of a positively polarized pulse and a negatively polarized pulse is used in a preceding information signal in the case information signals of the same pixel displays are continued. In this case, an operation selection signal (a), an operation non-selection signal (b), information-on signals c, d and information-off signals e, f are used and the information-on signals c, d are used in the case of the same pixel information are continued and the information-off signals e, f are used in the case information of different pixel displays are continued. Thus, the consumption power is suppressed and the crosstalk is also dissolved.

42. 发明专利

JPH10142580A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH10142580A
公开(公告)日：1998-05-29
申请号：JP29910496
申请日：1996-11-11
申请人： CANON KK
发明人： TSUBOYAMA AKIRA , KATAKURA KAZUNORI , IBA JUN
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal device capable of improving an image rewriting speed. SOLUTION: Image information comparison means 9 compares image information of two or more scanning signal lines stored in an image information storage means 1a with each other, and also when the image information of two or more scanning signal lines are the same as a result of the comparison by this image information comparison means 9, a frame cycle is decreased and an image rewriting speed is improved by controlling a scanning signal impression means 5 to impress the scanning signal at the same time to the scanning signal electrodes 6a corresponding to the two or more scanning signal lines by means of a scanning signal control means 3. Moreover, when the image information are different as a result of the comparison, an information signal control means 4 controls an information signal impression means 7 so as to impress the information signal without DC compensation elements to information signal electrode 6b, and thus, decreases the frame cycle for improving the image rewriting speed.

43. 发明专利

JPH09244001A LIQUID CRYSTAL DEVICE 失效
公开(公告)号：JPH09244001A
公开(公告)日：1997-09-19
申请号：JP5515296
申请日：1996-03-12
申请人： CANON KK
发明人： IBA JUN
IPC分类号： G02F1/133 , H01L29/786
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal device fast in display speed and reduced in uneven picture quality. SOLUTION: An information line driving circuit 16A impressing a driving waveform corresponding to an information signal to be impressed on an information signal electrode group on pixels 9 is constituted of a first information line driver circuit 16 to be arranged at the outside of a pixel group 9 and plural second information line driving circuits 12, 13, 14 to be arranged in the internal part of the pixel group 9 and a liquid crystal panel 8 is divided into three parts by arranging the second information driving circuits 12, 13, 14 so as to divide the panel 8 in a scan direction. Then, a high-speed display is made possible and also the unevenness of display quality is made small by allowing the second information line driving circuits 12, 13, 14 to store the information signal in one scan period and transferred from the first information line driver circuit 16 in storage means and beside to output prescribed driving waveforms in prescribed timings according to the information signal with their output means.

44. 发明专利

JPH09197379A METHOD FOR DRIVING LIQUID CRYSTAL ELEMENT 失效
公开(公告)号：JPH09197379A
公开(公告)日：1997-07-31
申请号：JP583096
申请日：1996-01-17
申请人： CANON KK
发明人： TSUBOYAMA AKIRA , KATAKURA KAZUNORI , IBA JUN
IPC分类号： G02F1/133 , G09G3/36
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal driving method capable of extending the driving margine without increasing the voltage value of information signal. SOLUTION: An information signal and a scanning signal are selectively impressed to many pixels forming a display screen to switch the pixels. A control part 43 controls the pulse generating operation of a separation pulse generating part 42 to generate a separation pulse Ps and a writing pulse Pw generated from a writing pulse generating part 42 is separated by the separation pulse Ps. Thus, synthetic waveform between the information signal and the writing pulse Pw includes a reverse polarity pulse and the switching operation of unselected pixels is interrupted without increasing the voltage value of the information signal.

45. 发明专利

JPH07255063A VIDEO DISPLAY DEVICE 失效
公开(公告)号：JPH07255063A
公开(公告)日：1995-10-03
申请号：JP6811194
申请日：1994-03-14
申请人： CANON KK
发明人： IBA JUN
IPC分类号： G02F1/133 , G09G3/36 , H04N5/202 , H04N9/69 , H04N9/73
摘要： PURPOSE:To provide a video display device which obtains a see-through image without color unbalance between an image of a video display unit and a scene of an external field. CONSTITUTION:A video input is separated by a Y/C separation part 10 into a luminance signal Y and a color signal C, which are demodulated by a decoder 11 into a color difference signal; and a matrix circuit 12 performs matrix conversion into an RGB signal, which is supplied to an inverse gamma converting circuit for inverse gamma conversion. A sensor 40 detects the color temperature of external light and an external light color temperature measuring circuit 41 measures the color temperature of the external light; and a color balance adjusting circuit 44 adjusts the color balance of the RGB video signal according to the color temperatures. The adjusted RGB video signal is inputted to an analog driver circuit 20 and an image is displayed on an LCD panel 21 which is lighted by a back light 22. This image is led to a combiner, and the image and the see-through image of the scene of the external field which have no color unbalance can be observed with the eyes of an observer.

46. 发明专利

JPH06339145A COLOR IMAGE PICKUP DEVICE 失效
公开(公告)号：JPH06339145A
公开(公告)日：1994-12-06
申请号：JP15143693
申请日：1993-05-28
申请人： CANON KK
发明人： IBA JUN , SHIRAISHI AKIHIKO
IPC分类号： H04N9/07 , H04N9/67
摘要： PURPOSE:To obtain a color image pickup device with excellent resolution and less moire and excellent S/N. CONSTITUTION:Signals obtained from an image pickup element 101 in which color filters R, G1, G2, B are provided by Bayer arrangement are subject to simultaneous processing by interpolation filters 106-109 and signals R-G1, R-G2, B-G1, B-G2 are obtained by adders 129, 130, 139, 140 and color difference signals R-Y, B-Y are generated by a color difference signal generating circuit 141 and a color difference matrix 113 or the like from the signals above. A carrier of Nyquist frequency is suppressed and a picture with less moire, having a resolution up to the Nyquist frequency and with excellent S/N is obtained.

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