公开(公告)号：JPS6473316A

公开(公告)日：1989-03-17

申请号：JP22837287

申请日：1987-09-14

Applicant: CANON KK

Inventor： MIHARA TADASHI ,  YAMAMOTO TAKASHI ,  IWAMOTO HIROBUMI

IPC: G02F1/133

Abstract: PURPOSE:To uniform the temperature of the panel and to reduce the influence of a temperature difference even if the temperature difference is generated nearby the panel by providing a heat conductor with high heat conductivity on the back surface of the panel. CONSTITUTION:An electrode group of transparent electrodes ITO (Indiu Thin Oxide) 102 is formed on a substrate 101 in a specific pattern and an electrode group of transparent electrodes 102' crossing the transparent electrodes 102 is formed on a substrate 101'. An orientation control film 105 formed by using an inorganic insulating material such as silicon monoxide and silicon dioxide and an organic insulating material such as polyvinyl alcohol and polyimide is provided on the substrate 101', and the orientation control film 105 is obtained by rubbing its surface against velvet, cloth, and paper in one direction after the film formation. The heat conductor 110 is formed on the back surface of the substrate 101 and ITO of 1mum in thickness formed by a sputtering method. Consequently, the temperature of the liquid crystal panel is uniformed over the entire surface of the panel and even when a light source which causes a temperature difference in the temperature distribution of the liquid crystal panel is used, high picture quality can be maintained.

公开(公告)号：JP2001282426A

公开(公告)日：2001-10-12

申请号：JP2000093959

申请日：2000-03-30

Applicant: CANON KK

Inventor： YAMAMOTO TAKASHI ,  FUKUDA SATORU ,  MIYAMOTO KATSUHIRO

IPC: G06F3/02 ,  G06F13/00 ,  H04N5/00 ,  H04N5/232 ,  H04N5/44 ,  H04N5/76 ,  H04N5/765 ,  H04N5/77 ,  H04N5/775 ,  H04Q9/00

Abstract: PROBLEM TO BE SOLVED: To flexibly cope with operation environment of various kinds of equipment and to operate the equipment by remote control by simple operation procedures. SOLUTION: A DVC 100 and a tuner 110 hold operation panels to provide the operation environment peculiar to each pieces of equipment. A digital television 120 accepts an operation to the operation panels supplied from each piece of the equipment. A remote controller 130 is provided with a first operation part to operate the operation panels and a second operation part to instruct a specified operation. The VC 100 and the tuner 110 control the present devices based on the operation to the first and second operation parts.

公开(公告)号：JPH11185031A

公开(公告)日：1999-07-09

申请号：JP35546597

申请日：1997-12-24

Applicant: CANON KK

Inventor： TAKAYAMA TADASHI ,  YAMAMOTO TAKASHI ,  ICHIHASHI NOBUHARU

IPC: H04N11/20 ,  G06T1/00 ,  G06T3/40 ,  H04N1/387 ,  H04N1/46 ,  H04N1/60 ,  H04N9/64

Abstract: PROBLEM TO BE SOLVED: To provide a resolution conversion device capable of realizing excellent image quality with of a small scale circuit. SOLUTION: A first color space conversion means 4410 converts RGB image data s103 into image data of luminance data Y and color difference data R-Y and R-B. A resolution conversion means 4411 performs conversion of a picture element number by a tertiary convolution interpolation method to the luminance data Y, while other resolution conversion means 4412 and 4413 perform conversion of the picture element number by a linear interpolation method to the color difference data R-Y and R-B. A second color space conversion means 4416 coverts the image data after the conversion of the picture element number into the RGB image data s103a.

公开(公告)号：JPH10148815A

公开(公告)日：1998-06-02

申请号：JP32487496

申请日：1996-11-21

Applicant: CANON KK

Inventor： YAMAMOTO TAKASHI

IPC: G02F1/133 ,  G09G3/36

Abstract: PROBLEM TO BE SOLVED: To provide a display device which is composed by connecting an image source and plurality of displays with a line of cable and a simple, easy and inexpensive relay circuit. SOLUTION: In a display device in which an image source and plurality of displays are connected by one line of cable and each display displays based on the image data generated in the corresponding image source, one display 100 is composed so as to display based on the image data transferred from the image source through the above-stated cable and perform a specified or another communication required for the transfer of image data from the image source. Other displays 200, 300 merely receive and display the image data sent from the image source to the cable based on the communication between the image source and the display 100.

公开(公告)号：JPH10133617A

公开(公告)日：1998-05-22

申请号：JP28999196

申请日：1996-10-31

Applicant: CANON KK

Inventor： YAMAMOTO TAKASHI

IPC: G11C16/02 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00

Abstract: PROBLEM TO BE SOLVED: To decrease the number of times of write in the same storage position and to improve durability of a storage medium when data indicating a setting state and the like of a display device is stored in a rewritable storage medium. SOLUTION: In this display control device, a wound in which at least one bit of a state '1' is included by a parity bit is stored in an EEPROM as adjustment level data, while zero is written in all other words. When the device is started, data is successively read out from the leading address of the EEPROM, data including a bit of a state '1' is detected (S91-S96), and it is used for controlling the device as adjustment level data (S97). Then zero is written in a retrieved address position (S98), while a value in which 1 is added to the detected address is held as a writing address of adjustment level data in cutting off a power source of the device (S100).

公开(公告)号：JPH09265350A

公开(公告)日：1997-10-07

申请号：JP7483496

申请日：1996-03-28

Applicant: CANON KK

Inventor： KUREMATSU KATSUMI ,  UEHARA MAKOTO ,  ITAZAWA TOSHIAKI ,  OUCHI TOSHIMICHI ,  AOKI TADASHI ,  YUKI OSAMU ,  YAMAMOTO TAKASHI

IPC: G06F3/041 ,  G06F3/033

Abstract: PROBLEM TO BE SOLVED: To perform the display in accurately response to the position of a pen point by placing a microlens array between a data input plane where the pen point is applied and the display screen of a display means. SOLUTION: A two-dimensional array of microlenses 21 is formed on the lower surface of an input display board 2 made of glass by the ion exchange method, and a diffused layer 22 is formed on the upper surface of the board 2 by the dispersing agent coating method. When the front light (b) emitted from a back light 4 irradiates an LCD panel 3, the pixels of the panel 3 are projected on the layer 22 formed on the upper surface of the board 2 through the microlenses 21 of the board 2. Thus the images are displayed on the layer 22. As a result, the complete coincidence is secured between a pen point and an image display screen and the smooth pen input of handwriting is attained with no feeling of incongruity and with a writing feeling with a pen and a notebook.

公开(公告)号：JPH08304774A

公开(公告)日：1996-11-22

申请号：JP12877295

申请日：1995-05-01

Applicant: CANON KK

Inventor： MUNENO KOICHI ,  ONO TOMOYUKI ,  YAMAMOTO TAKASHI

IPC: G02F1/133 ,  G09G3/36 ,  H04N5/66

Abstract: PURPOSE: To display more easily a video signal with an aspect ratio different from that of a device and also to enable the device to cope with simultaneous displaying of both analog/digital types of video signals. CONSTITUTION: A picture display device displaying a picture successively refreshing it on a screen based on an input video signal, is provided with a display frame control circuit 15 by which switching is done to a picture display area on the picture display 1 in accordance with an aspect ratio of the input video signal and an outside area refreshing means 21 which refreshes the display area outside of the picture display area at a lower cycle than the refreshing cycle in the picture display area, and the picture display has a storing ability. Or this device is provided with a selective switching means 7, 10 selecting two or more from multiple input video signals, switching the selected signals at a specified timing, and an assignment means 15 assigning the picture display area on the picture display where a display of each selected video signal is performed based thereon, and the picture display has a storing ability.

公开(公告)号：JPH06230344A

公开(公告)日：1994-08-19

申请号：JP4053893

申请日：1993-02-03

Applicant: CANON KK

Inventor： ONITSUKA YOSHIHIRO ,  UEHARA MAKOTO ,  YAMAMOTO TAKASHI ,  YABU SHIGEKI

IPC: G02F1/133 ,  G09G3/18

Abstract: PURPOSE:To prevent deterioration in picture quality and the crystallization of liquid crystal in emergency with necessary minimum of power consumption by controlling electric power to be supplied to a heater panel depending upon environmental temperature, by a heater control circuit. CONSTITUTION:The liquid crystal device has a liquid crystal panel 1 which displays information, a heater 11 which heats the liquid crystal pane 1 to raise its temperature, and a heater control circuit 15 which controls the heater 11; when the environment temperature is lower than a prescribed stand-by temperature, the heater 11 is controlled by the heater control circuit 15 which lets the temperature of the liquid crystal panel 1 be the stand-by temperature when the liquid crystal device is not in operation and also lets the temperature of the liquid crystal panel 1 be a prescribed operation temperature when the liquid crystal device is in operation. The heater panel is controlled according to the environmental temperature, so the power consumption in the heater panel can be minimized, excessive heat is applied to neither members nor circuits, and their deterioration can be suppressed.

公开(公告)号：JPH05323316A

公开(公告)日：1993-12-07

申请号：JP15122592

申请日：1992-05-20

Applicant: CANON KK

Inventor： KANDA TOSHIYUKI ,  TAKABAYASHI HIROSHI ,  MORI HIDEO ,  YAMAMOTO TAKASHI

IPC: G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To enable uniform lighting to be effected without any unevenness by thin type constitution. CONSTITUTION:A light source 1 and its lead 6 are fixed to a reflecting plate 2 through a clip-shaped elastic member 7 which is fitted to the reflecting plate 2. The color of the reflecting plate 2 is set to -2.0 to in DELTAb* value in the CIE 1976L*a*b* color space on the basis of a reference color. The effective light emission part length of light sources which are arranged on two opposite flanks among four light sources where light is made incident from the flank of a light guide body is longer than the effective light emission surface length and the effective light emission part length of the light sources on other two opposite flanks is shorter than the effective light emission surface length. In another method, the light guide body is divided in a diagonal direction of its rectangle.

公开(公告)号：JPH05119316A

公开(公告)日：1993-05-18

申请号：JP30560791

申请日：1991-10-25

Applicant: CANON KK

Inventor： KANDA TOSHIYUKI ,  YABU SHIGEKI ,  UEHARA MAKOTO ,  TAJIMA HISAO ,  YAMAMOTO TAKASHI

IPC: G02B5/02 ,  G02F1/1335 ,  G02F1/13357

Abstract: PURPOSE:To reduce the irregularity of illumination by a back light device and the irregularity of temperature on a display panel to which the back light device is applied. CONSTITUTION:This back light device is provided with a light source 1, a reflector 2 which reflects light emitted from the light source 1 forward, a light uniformizing film 4 which uniformizes brightness difference between reflected light from the reflector 2 and direct light from the light source 1, and a diffusion plate 4 which turns the light transmitted through the film 4 into diffused light. In this device, a projecting wall 11 formed in such a shape or of such a material that a shadow is not substantially thrown on the diffusion plate 2 is provided vertically to the longitudinal direction of the light source 1 on the reflector 2.