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公开(公告)号：DE4104523A1
公开(公告)日：1991-08-22
申请号：DE4104523
申请日：1991-02-14
Applicant: CANON KK
Inventor： IKEDA IKUMASA
Abstract: The memory blocks (24, 26) are energised by a control (28) such that the blocks can store two types of data. The time of an access cycle to the second data is greater than that of such cycle to the first data. The control accesses the memory block for the second data in a different way than the first data block. The address for the first data is set during the time period of the access cycle for the second data. Pref. each memory block is an RAM. The access cycle for the second data is typically twice of that for the first data. The first data are luminance data (Y), while the second data are chrominance difference data (R-Y, B-Y). ADVANTAGE - High velocity access to memory with low capacity.
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公开(公告)号：DE69025696T2
公开(公告)日：1996-11-14
申请号：DE69025696
申请日：1990-10-18
Applicant: CANON KK
Inventor： KAWAI JUN , IKEDA IKUMASA , TAKIGUCHI HIDEO
Abstract: There is disclosed a driving device for a recording head such as a thermal head (10) or an ink jet head driven in plural blocks, capable of avoiding formation of division lines, or low-density streaks, in the recorded image at the boundaries of the driving blocks of the head (10). In this driving device, the time difference between the start of pulse application to a heat generating element of the recording head (10) and that to an adjacent element is maintained not exceeding the maximum pulse duration to the heat generating element. Also a group of plural heat generating elements positioned at the boundary of two divided blocks is activated simultaneously with each of the two divided blocks.
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公开(公告)号：DE69025696D1
公开(公告)日：1996-04-11
申请号：DE69025696
申请日：1990-10-18
Applicant: CANON KK
Inventor： KAWAI JUN , IKEDA IKUMASA , TAKIGUCHI HIDEO
Abstract: There is disclosed a driving device for a recording head such as a thermal head (10) or an ink jet head driven in plural blocks, capable of avoiding formation of division lines, or low-density streaks, in the recorded image at the boundaries of the driving blocks of the head (10). In this driving device, the time difference between the start of pulse application to a heat generating element of the recording head (10) and that to an adjacent element is maintained not exceeding the maximum pulse duration to the heat generating element. Also a group of plural heat generating elements positioned at the boundary of two divided blocks is activated simultaneously with each of the two divided blocks.
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公开(公告)号：DE4104523C2
公开(公告)日：2003-12-04
申请号：DE4104523
申请日：1991-02-14
Applicant: CANON KK
Inventor： IKEDA IKUMASA
Abstract: There is disclosed a control circuit of a memory device of a random access type for storing first data and second data whose reading/writing cycle time is longer than that of the first data, including: a memory circuit for reading/writing a predetermined number of first data into/from each memory block which is obtained by dividing the memory device into at least two or more memory blocks, for reading/writing the second data into/from the other memory blocks, and for supplying address signals for the reading/writing cycle period of time of the second data; and a memory switching circuit for switching and using the memory blocks in order to read/write the first and second data, so that the memory device can be accessed at a high speed by using a small capacity.
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公开(公告)号：DE68927282T2
公开(公告)日：1997-03-13
申请号：DE68927282
申请日：1989-07-17
Applicant: CANON KK
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Patent Agency Ranking
公开(公告)号：DE68927282D1
公开(公告)日：1996-11-07
申请号：DE68927282
申请日：1989-07-17
Applicant: CANON KK
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公开(公告)号：JPH08265623A
公开(公告)日：1996-10-11
申请号：JP6741295
申请日：1995-03-27
Applicant: CANON KK
Inventor： IKEDA IKUMASA
Abstract: PURPOSE: To reduce the number of wires interconnecting a camera and a tripod. CONSTITUTION: A control circuit 24 of a video camera 10 receives an external control signal via a communication circuit 22 to control the entire sections. That is, the control circuit 24 drives a panning motor 34 with a panning motor drive circuit 36 with respect to panning and drives a tilt motor 38 with a tilt motor drive circuit 40 with respect to tilting. Each of the motors 34, 36 is provided with a means interrupting a drive current to prevent further motor driving when each motor reaches a drive limit. A universal head 32 is provided with the drive circuits 36, 40 and the motors 34, 38. The drive circuits 36, 40 may be provided to the camera 10.
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公开(公告)号：JPH0619441A
公开(公告)日：1994-01-28
申请号：JP17643592
申请日：1992-07-03
Applicant: CANON KK
Inventor： IKEDA IKUMASA
IPC: B41J2/525 , G06T1/00 , G06T11/60 , G09G5/06 , H04N1/40 , H04N1/46 , H04N1/60 , G06F15/62 , G06F15/66
Abstract: PURPOSE:To provide the color image signal converting device which can increases the color reproducibility of a color image signal with small memory capacity. CONSTITUTION:This device is equipped with 2nd table memory groups 105-107 which stores the output of one memory corresponding to two optional colors among 1st table memory groups 102-104 outputting data consisting of bits as many as the bits of a color image signal by regarding components of two colors of a digital color image signal as a read address and conversion data corresponding to a color image signal inputted by regarding an image signal of one color other than the two optional colors as a read address; and specific numerals are inputted to the read addresses of data stored in the 1st table memories 102-104 corresponding to the combination of the components of the two colors which have nearly the same density when printed.
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公开(公告)号：JPH02229048A
公开(公告)日：1990-09-11
申请号：JP5014589
申请日：1989-03-03
Applicant: CANON KK
Inventor： IKEDA IKUMASA
Abstract: PURPOSE:To readily trim or compose images in a desired selected color only through the designation of the output layout of a plotting area and printing color by providing an image composing means composing an input image from a video image means and selected color data from a color selecting means based on data stored in a storage means and a printing means printing and outputting a composite image. CONSTITUTION:Binary data read by a scanner 12 is sequentially stored in a memory 14a or 14b, whichever is selected by a memory changeover switch 15b. The memory 14a is used for trimming and the memory 14b is used for character information. Under the control, only the plotting area inputted by the scanner 12 and stored in the memory A14b is outputted as a video image, whereas other areas can be outputted as a color designated by a color select switch A19a. Consequently, an input video image can be trimmed. When a preferential switch 50 stands at 'L', character information can be composed while the image is trimmed. The output of the image selectively composed by a multiplexer 6a is sent to a head driver circuit 21a, supplied to a head 21b, and is printed in color.
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公开(公告)号：JPH02122946A
公开(公告)日：1990-05-10
申请号：JP27621488
申请日：1988-11-02
Applicant: CANON KK
Inventor： IKEDA IKUMASA
Abstract: PURPOSE:To obtain ink sheet which allows an image to be formed using sublimable ink on a recording medium, without a sublimable ink image acceptive layer, such as plain paper and also an image formation device by transferring a sublimable ink acceptive layer to the image formation area of a recording medium and then transferring the sublimable ink to the image formation area to form an image. CONSTITUTION:When an image is formed using sublimable ink on recording paper 4 without a sublimable ink acceptive layer such as plain paper, the acceptive layer containing the acceptive component of sublimable ink is transferred to an image formation area on recording paper 4 suited to a specified image formation size. An image can be formed on the recording paper 4 using the sublimable ink by transferring the sublimable ink. In case sublimable yellow, magenta and cyan ink are used, a full-color image can be formed. Therefore, it is possible to write characters on the blank of a formed image, for instance, when the image is formed on a postcard using the sublimable ink.
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