-
公开(公告)号：JP2002229506A
公开(公告)日：2002-08-16
申请号：JP2001028871
申请日：2001-02-05
Applicant: CANON KK
Inventor： SAGANO OSAMU
Abstract: PROBLEM TO BE SOLVED: To provide an image display device and a driving method therefor, capable of displaying a high quality picture by calculating a correction amount to a voltage drop with a simple constitution and a less calculation amount, and. SOLUTION: The image display device which is provided with a display panel 1 comprising a multi-electron source formed by connecting two- dimensionally arranged cold cathode elements in a matrix form with a plurality of row wiring and a plurality of column wiring, and which drives a plurality of the cold cathode elements connected with a single row wiring, comprises a correction amount calculation means 14 for calculating a voltage drop amount at a prescribed number of nodes defined on the row wiring based on each picture signal inputted from a signal switching part 13, and an arithmetic calculation part 12 for calculating a correction amount of each picture signal based on the voltage drop amounts at a plurality of nodes.
-
公开(公告)号：JP2000310968A
公开(公告)日：2000-11-07
申请号：JP36662499
申请日：1999-12-24
Applicant: CANON KK
Inventor： ANDO SHUKI , SAGANO OSAMU
Abstract: PROBLEM TO BE SOLVED: To suppress an adverse effect on signals caused by interference between the wiring of a picture display device. SOLUTION: The device has plural wiring, plural display elements, to which signals are applied through the wiring, and a signal circuit which generates the signals. The circuit generates signals having the length of a compensated high level interval in accordance with the length of the compensated high level interval in accordance with the length of the high level interval of the signals applied to the adjacent wiring of each wiring or in accordance with the number of level changes of the signals applied to adjacent wiring in a high level interval or in order to suppress the luminance change by the level changes of the signals applied to adjacent wiring with respect to each wiring. It is desirable that a cross talk compensating section 13 compensates for a luminance signal S17 of own wiring to be inputted to a 'd' terminal based on luminance signals S18 and S19 of adjacent wiring.
-
3.发明专利
公开(公告)号：JPH09134145A
公开(公告)日：1997-05-20
申请号：JP29312095
申请日：1995-11-10
Applicant: CANON KK
Inventor： YAMANO AKIHIKO , ASAI AKIRA , SAGANO OSAMU , SUZUKI HIDETOSHI
Abstract: PROBLEM TO BE SOLVED: To make a luminescence of each picture element uniform by correcting non-uniform distribution to an effective voltage impressed on each electron emitting element. SOLUTION: Voltage drop arithmetic circuit 201 calculates a voltage drop ΔV to correspond to horizontal component count m from a picture signal DO, and a shift register group 237a-237c and a latch circuit 242 supply the voltage drop to an A/D converter 202 in synchronization with a timing signal Q3. Following this, a voltage V0 (drive voltage for ΔV=0) is added in an analog adder 203 to obtain drive voltages V1-Vm for each row.
-
公开(公告)号：JPH08221031A
公开(公告)日：1996-08-30
申请号：JP2420395
申请日：1995-02-13
Applicant: CANON KK
Inventor： SAGANO OSAMU , SUZUKI HIDETOSHI
Abstract: PURPOSE: To simplify a circuit configuration for driving a cold cathod element. CONSTITUTION: When image data for 1H (horizontal scanning time) are stored in shift register groups 37b and 37c, a timing signal Q3 is supplied from a timing control circuit 34 to the shift register groups 37b and 37c. Since this signal Q3 becomes high at the time corresponding to the ((2 )-1)th, where n=1,..., 7, and the period of 1H is equally divided by 2 8, the image data stored in the shift register groups 37b and 37c are shifted in the direction of downward arrows in the figure respectively by this signal Q3, and are supplied to a latch circuit 42 of (m) bits. Individual bits of the image data are latched in turn from the lower-order bit by the latch circuit 42 in synchronization with the signal Q3, thus turning a signal outputted from the latch circuit 42 into a PWM (pulse width modulation) signal corresponding to the image data.
-
公开(公告)号：JPH07325554A
公开(公告)日：1995-12-12
申请号：JP11902494
申请日：1994-05-31
Applicant: CANON KK
Inventor： SAGANO OSAMU , SUZUKI HIDETOSHI
Abstract: PURPOSE:To eliminate the inclination of emission charges and luminance of an electronic source consisting of plural surface conductive electron emission arranged in matrix and an image forming device using it. CONSTITUTION:A multi-electronic source 404 is arranged with the surface conductive electron emission elements in matrix. A drive control circuit 401 inputs a scanning signal to scanning signal drive systems 403, 404 based on an input signal, and inputs a data signal to a data signal drive system 402 by synchronizing it with the scanning signal. The scanning signal drive systems apply the scanning signal from the drive systems 1, 2 for every prescribed number of lines to the electronic source alternately corresponding to the inputted scanning signal. In such a manner, by applying the scanning signal from both ends of the line, the drop of an element voltage caused by the resistance of the wiring is dispersed into both ends, and the emission charges of the electronic source is prevented from being biased as a whole.
-
Patent Agency Ranking
公开(公告)号：JP2003255884A
公开(公告)日：2003-09-10
申请号：JP2002336857
申请日：2002-11-20
Applicant: CANON KK
Inventor： SAGANO OSAMU , INAMURA KOHEI , ABE NAOTO , SAITO YUTAKA , IKEDA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide a display device which displays video with better picture quality than a conventional case and to provide its image signal processor and a driving controller. SOLUTION: The display device is provided with a display panel 301 which is provided with display elements arranged in a matrix manner and driven through a plurality of row and column wiring, a scanning circuit 302 which scans the row wiring and a modulation circuit 303 which supplies modulation signals to the column wiring based on image data. The device is also provided with a correcting circuit 304 which conducts correction processes for the image data to compensate for the fluctuation in display luminance caused by voltage drop generated by the resistivity of the row wiring and luminance control circuits 306A, 306B and 306C which control the display luminance of the panel based on the luminance information of the image data. COPYRIGHT: (C)2003,JPO
-
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
-
公开(公告)号：JP2003173160A
公开(公告)日：2003-06-20
申请号：JP2002277830
申请日：2002-09-24
Applicant: CANON KK
Inventor： SAGANO OSAMU , ABE NAOTO , SAITO YUTAKA
Abstract: PROBLEM TO BE SOLVED: To provide an image display device and an adjusting method therefor, capable of deciding preferred correction conditions for adjusting display characteristics. SOLUTION: In a constitution having a plurality of display elements to be driven by matrix wiring, an image for adjustment reflecting a plurality of correction conditions is displayed and the preferred conditions are selected to obtain corrected image data adjusted according to the selected conditions. COPYRIGHT: (C)2003,JPO
-
公开(公告)号：JP2003162249A
公开(公告)日：2003-06-06
申请号：JP2001358566
申请日：2001-11-22
Applicant: CANON KK
Inventor： INAMURA KOHEI , ABE NAOTO , SAGANO OSAMU , SAITO YUTAKA , IKEDA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide an image display device which can correct the variance of driving conditions caused by the electric resistance of matrix wiring of a display panel with little hardware and has an excellent gray scale property, and to provide an image display method. SOLUTION: The image display device is provided with a discrete correction data calculation part which sets a plurality of discrete reference values to the inputted image data and calculates correction data in the reference values of the image data, a correction data interpolation means to calculate correction data corresponding to the size of the inputted image data by interpolating the correction data to the discrete reference value, correction data calculated by the correction data interpolation means, and an arithmetic means to calculate the image data. The discrete correction data calculation part calculates the correction data on the basis of the statistics of the inputted image data in a period including the start time and the finish time of a time domain using the discrete reference values as both ends. COPYRIGHT: (C)2003,JPO
-
10.发明专利
公开(公告)号：JP2002175037A
公开(公告)日：2002-06-21
申请号：JP2000374941
申请日：2000-12-08
Applicant: CANON KK
Inventor： ABE NAOTO , SAGANO OSAMU
Abstract: PROBLEM TO BE SOLVED: To provide a same circuit configuration for driving left and right terminals of an image forming panel using a same scanning signal, a scanning driver in a packaged form, and an integrated circuit which is properly adaptable thereto. SOLUTION: This integrated circuit is a scanning driver which sequentially shifts a start signal for instructing, to start scanning in synchronism with a synchronous signal; outputs binary signals showing each positional state in parallel; and uses at least one or more binary signals to compose the scanning driver for driving the scanning wiring of an image forming panel by the parallel outputs, and which comprises 1st and 2nd input terminal DQA, DQB for inputting the shifted signals; plural pieces of latch circuits 1101 operating according to a clock synchronizing with the synchronous signal; switching circuits 1102, 1103 for cascade-connecting the plural pieces of latch circuits in the direction according to a directional signal DIR for indicating the direction of the shift and also connecting the input of the first one of the cascade- connected latch circuits the 1st and 2nd input terminals in accordance with the directional signal; and an output means for generating outputs in parallel, corresponding to respective outputs Q1-Q40 of the plural pieces of latch circuits channel by channel.
-
-
-
-
-
-
-
-
-
Search Results
47
records
(took 0.023 seconds)
