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公开(公告)号：JP2003122289A
公开(公告)日：2003-04-25
申请号：JP2001322631
申请日：2001-10-19
Applicant: CANON KK
Inventor： ANDO SHUKI , YAMAZAKI TATSURO
Abstract: PROBLEM TO BE SOLVED: To provide a picture display device whose power consumption can be efficiently reduced at a lower cost. SOLUTION: In this display device, a scan driving part 2 is provided with a selection potential generating part 23 which generates a selection potential V1, a non-selection potential generating part 24 which generates a non-selection potential V2, a pause potential generating part 25 which generates a pause potential V3 and a first changeover switch 21, a second changeover switch 22 which selectively output one of the selection potential V1, the non-selection potential V2 and the pause potential V3.
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公开(公告)号：JP2002057959A
公开(公告)日：2002-02-22
申请号：JP2000239112
申请日：2000-08-07
Applicant: CANON KK
Inventor： ANDO SHUKI , YAMAZAKI TATSURO
Abstract: PROBLEM TO BE SOLVED: To provide a unified interface easily recognized by a user by enabling a terminal section to acquire adjustment contents of an image display section so as to build up an integrated adjustment menu. SOLUTION: The terminal section 2 acquires adjustment items of an image display section 1 from the image display section 1 and builds up an adjustment menu (S202) where acquired adjustment items are added in the case that the acquired adjustment items of the image display section include the adjustment items other than the adjustment items of its own device (S201-N). By displaying the rebuilt up adjustment menu, a common adjustment menu including the adjustment items of all devices connected to the system can be displayed and an instructed adjustment right is set to a device which performs adjustment (S204, 205).
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公开(公告)号：JP2000310967A
公开(公告)日：2000-11-07
申请号：JP36125499
申请日：1999-12-20
Applicant: CANON KK
Inventor： ANDO SHUKI , SHINO KENJI
Abstract: PROBLEM TO BE SOLVED: To stabilize the amount of electron emission while preventing the degradation in the characteristic of an electron source and the occurrence of damage and to display a picture with faithful luminance for original picture signals over the entire display screen. SOLUTION: V/I converting circuits 108 are provided with n independent constant current sources corresponding to n column direction wiring. Each circuit 108 is a constant current source made up with an operational amplifier, a transistor and a resistor. A voltage limiting circuit 209 utilizes a diode D. A limit value setting circuit is constituted of a D/A converter, a buffer amplifier or a potentiometer connected to a power supply and a buffer amplifier, for example. A spike current absorbing means 211 utilizes a capacitor C. Note that the larger the capacitor, the smaller a voltage increase portion ΔVs of the wiring. Thus, the required value of the capacitor C of the means 211 is desired to be not less than 0.1 μF.
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公开(公告)号：JP2003168109A
公开(公告)日：2003-06-13
申请号：JP2001368684
申请日：2001-12-03
Applicant: CANON KK
Inventor： ANDO SHUKI
Abstract: PROBLEM TO BE SOLVED: To generate a reverse gamma conversion table in which gradation deterioration in a low brightness area can be relieved and an image signal by which no image is whitened. SOLUTION: These image processor and data processor are constituted so that the image signal to be outputted is generated by performing a reverse gamma conversion processing based on a conversion function in which a low gradation part in an image signal to be inputted is defined as a linear function by a ROM 2 and a high gradation part in the image signal is defined as a nonlinear function consisting of combination of gamma functions and the image signal is outputted to a display module 3. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2002304149A
公开(公告)日：2002-10-18
申请号：JP2002016776
申请日：2002-01-25
Applicant: CANON KK
Inventor： ANDO SHUKI
Abstract: PROBLEM TO BE SOLVED: To reduce memory usage and also to use a modulation-side drive circuit having simple constitution, in an image display. SOLUTION: This image display has a constitution, in which modulation wirings of a display panel are divided into a plurality of blocks and signals for generating modulation signals which are to be transmitted respectively to the blocks are transferred in parallel. Moreover, the outputting of the parallel signals is started, before the inputting of entire signals is completed.
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Patent Agency Ranking
公开(公告)号：JP2000250463A
公开(公告)日：2000-09-14
申请号：JP5205599
申请日：1999-02-26
Applicant: CANON KK
Inventor： ANDO SHUKI , ABE NAOTO
Abstract: PROBLEM TO BE SOLVED: To make a display device perform the change of brightness due to an automatic bright limiting circuit smoothly. SOLUTION: An average brightness detecting part 33 calculates the average brightness Lt of a noticing frame with the weighted average of the simple average brightness L of the frame and the average brightness L0 of a frame just prior to that frame. The degree of correlation among frames detected by a part for detecting the degree of correlation of frames 32 is included in the weight at this time. An ABL(automatic brightness limiting circuit) gain calculating part 34 calculates an ABL gain for controlling brightness based on the average brightness Lt including the component of the front frame. Thus, a gain which is to be calculated, that is, display luminance in its turn is set so that the change of brightness becomes a speed in accordance with the degree of correlation of frames.
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公开(公告)号：JP2003153123A
公开(公告)日：2003-05-23
申请号：JP2001343250
申请日：2001-11-08
Applicant: CANON KK
Inventor： MORI MAKIKO , ANDO SHUKI
Abstract: PROBLEM TO BE SOLVED: To provide a video display device equipped with an ABL in which circuit scale is not expanded and visual incompatibility is not sensed by an observer. SOLUTION: This device is provided with a video display panel, a luminance averaging means, a scene switching detecting means and a luminance control means and the scene switching detecting means discriminates the presence/ absence of scene switching on the basis of the frame difference of average luminance or second-order differentiated value. When there is scene switching, the change of display luminance is quickened and when there is no scene switching, the change is made slow.
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公开(公告)号：JP2000260358A
公开(公告)日：2000-09-22
申请号：JP5704499
申请日：1999-03-04
Applicant: CANON KK
Inventor： ANDO SHUKI , MITSUTAKE HIDEAKI
IPC: H01J31/12
Abstract: PROBLEM TO BE SOLVED: To improve discharge without voltage and to facilitate assembling of a device by separately arranging a lower voltage portion and a higher voltage portion. SOLUTION: Since row-array terminals are connected with both sides of a row wiring in a display panel and are driven with the absolutely same signals from two sets of scan driving portions 6, current of the row wiring is dispersed to both sides to reduce partial voltage drop. An acceleration voltage generating portion 7 and an acceleration voltage wiring 9 are high voltage portions with several kV to 20 kV, the other portions are low voltage portions with 5-15 V, distance L between them is preferably separated more than 1 mm/kV for safety. Therefore, by providing a layout with the distance L set longer than 20 mm, discharge withstand voltage is improved, and safety of a device is improved. In addition, because noise radiation due to a high voltage generating circuit is large in the high voltage portions, the low voltage portions such as a control portion 8, modulation and the scan driving portions 5, 6 of the device are arranged spaced from the high voltage portions to reduce possibility of circuit malfunction by the noise radiation of the high voltage portions.
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公开(公告)号：JP2000250503A
公开(公告)日：2000-09-14
申请号：JP9674299
申请日：1999-02-26
Applicant: CANON KK
Inventor： MORI MAKIKO , YAMAZAKI TATSURO , ABE NAOTO , ANDO SHUKI
Abstract: PROBLEM TO BE SOLVED: To easily adapt an image display part to be connected even if its characteristics change by providing in the image display part with a specific information transmitting means which transmits specification information specifying the characteristics of its device to a supply source and a display part communication means which communicates a signal including a video signal determined by a determining means for the supply source. SOLUTION: When an ID request command is sent to an image display part 1 and received, it is checked whether or not the received ID is already known by its terminal part 2 and the specifications of the image display part can be grasped. If the display part is not known and a standard monitor is not connected either, a specification request command is sent to the image display part 1. Once specification information is received from the image display part 1, it is stored in a nonvolatile memory on condition that it is applicable to its terminal part 2. Then the image display part 1 is requested to transmit necessary adjustment data according to selected specifications. On receiving the adjustment data, the specifications of the image display part 1 can be grasped, so normal processes begin.
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公开(公告)号：JP2003228317A
公开(公告)日：2003-08-15
申请号：JP2002190675
申请日：2002-06-28
Applicant: CANON KK
Inventor： ABE NAOTO , SAGANO OSAMU , SAITO YUTAKA , ANDO SHUKI
Abstract: PROBLEM TO BE SOLVED: To obtain a favorable image by increasing peak brightness of the image to be displayed, and suppressing generation of a useless period. SOLUTION: The method for driving an indicator having a plurality of scanning wirings and a plurality of modulation wirings includes a step for supplying a scanning selection signal to the scanning wiring selected from among the plurality of scanning wirings in every horizontal scanning period, and a step for supplying a modulation signal modulated on picture date to the plurality of modulation wiring in every horizontal scanning period, and at least the selection periods of the scanning selection signals during the horizontal scanning periods are made to differ from each other during the vertical scanning periods. COPYRIGHT: (C)2003,JPO
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