公开(公告)号：DE69124279D1

公开(公告)日：1997-03-06

申请号：DE69124279

申请日：1991-03-27

Applicant: CANON KK

Inventor： SUGIURA SUSUMU ,  MITA YOSHINOBU ,  SHISHIZUKA JUNICHI ,  TAKAOKA MAKOTO ,  SHIMOMURA YUKARI ,  MATSUMOTO KENTARO ,  UDA TOYOKAZU ,  SUGIYAMA MITSUMASA ,  KOBAYASHI SHIGETADA ,  HISADA KATSUTOSHI ,  KANEKO YOJI ,  NAKANISHI HIROYUKI

IPC: H04N1/46 ,  H04N1/64

Abstract: It is provided an image communication apparatus which comprises multi-level generation means for generating multi-level data from received image data, color conversion means for color-converting the multi-level data from the multi-level generation means, and setting means for setting a single color mode, in which the received image data is dealt with as single color data irrespective of the color conversion means, when it is determined by communication protocol that the communication mode is the single color mode, so as to ensure satisfactory communication even with a single color image.

公开(公告)号：FR2546694A1

公开(公告)日：1984-11-30

申请号：FR8408125

申请日：1984-05-24

Applicant: CANON KK

Inventor： HISADA KATSUTOSHI ,  NOBUTA HIROSHI

IPC: G06T1/60 ,  H04N1/32 ,  H04N1/387 ,  H04N1/40 ,  H04N5/91

Abstract: There is disclosed an image processing apparatus for electrically handling image information, particularly in compressed form, in which the efficiency of memory utilization is improved by storing information of plural pages in successive manner in a memory. Provision is made for ensuring that, if insufficient space is left in the memory for storage of another page of compressed image data, reading of the page in question is interrupted. Once there is again sufficient availability in the memory, the page is re-read, and the read data is compressed and stored.

公开(公告)号：DE69228215D1

公开(公告)日：1999-03-04

申请号：DE69228215

申请日：1992-08-28

Applicant: CANON KK

Inventor： HISADA KATSUTOSHI ,  TADOKORO YOSHIHISA

IPC: G06T9/00 ,  H04N1/333 ,  H04N1/64 ,  H04N1/46 ,  H04N1/32

Abstract: An image transmission apparatus includes a color codec section (108) for performing color image coding of a color image, a run-length codec section (109) for performing run-length coding of a monochrome image, and a switching unit (110) for arbitrarily switching the codec sections (108,109) and to perform coding in units of pages in one communication cycle depending on whether each page is a color image or a monochrome image. Whether each page is constituted by a color image or a monochrome image is set in advance, and corresponding information is stored in a memory (105). Coding is performed by a coding scheme set for each page, and the coded data is transmitted. Alternatively, coded data obtained by both the codec sections (108,109) are stored in a hard disk (107) and the data coded by a coding scheme, which an apparatus (300) at the other end of a communication line can handle, is read out and transmitted.

公开(公告)号：DE69023193D1

公开(公告)日：1995-11-30

申请号：DE69023193

申请日：1990-08-31

Applicant: CANON KK

Inventor： KANEKO YOJI ,  HISADA KATSUTOSHI

IPC: H04N1/00 ,  H04N1/32 ,  H04N1/387

公开(公告)号：DE3684966D1

公开(公告)日：1992-05-27

申请号：DE3684966

申请日：1986-07-30

Applicant: CANON KK

Inventor： HISADA KATSUTOSHI ,  KOKUBU NOBUAKI ,  SAKURAI SHIGEKI ,  MURATA YUKIO ,  OKANO TATSUO

IPC: G06T9/00 ,  H04N1/417

公开(公告)号：GB2142797B

公开(公告)日：1987-06-24

申请号：GB8413304

申请日：1984-05-24

Applicant: CANON KK

Inventor： HISADA KATSUTOSHI ,  NOBUTA HIROSHI

IPC: G06T1/60 ,  H04N1/32 ,  H04N1/387 ,  H04N1/40 ,  H04N1/41

Abstract: There is disclosed an image processing apparatus for electrically handling image information, particularly in compressed form, in which the efficiency of memory utilization is improved by storing information of plural pages in successive manner in a memory. Provision is made for ensuring that, if insufficient space is left in the memory for storage of another page of compressed image data, reading of the page in question is interrupted. Once there is again sufficient availability in the memory, the page is re-read, and the read data is compressed and stored.

公开(公告)号：DE69032791D1

公开(公告)日：1999-01-07

申请号：DE69032791

申请日：1990-08-31

Applicant: CANON KK

Inventor： KANEKO YOJI ,  HISADA KATSUTOSHI

IPC: H04N1/00 ,  H04N1/32 ,  H04N1/387

公开(公告)号：DE69129818T2

公开(公告)日：1998-12-10

申请号：DE69129818

申请日：1991-03-27

Applicant: CANON KK

Inventor： SUGIURA SUSUMU ,  MITA YOSHINOBU ,  TAKAOKA MAKOTO ,  SHISHIZUKA JUNICHI ,  SHIMOMURA YUKARI ,  MATSUMOTO KENTARO ,  UDA TOYOKAZU ,  SUGIYAMA MITSUMASA ,  KOBAYASHI SHIGETADA ,  HISADA KATSUTOSHI ,  KANEKO YOJI ,  NAKANISHI HIROYUKI

IPC: H04N1/04 ,  H04N1/60 ,  H04N1/64 ,  H04N1/46 ,  H04N7/01

公开(公告)号：DE69129818D1

公开(公告)日：1998-08-27

申请号：DE69129818

申请日：1991-03-27

Applicant: CANON KK

Inventor： SUGIURA SUSUMU ,  MITA YOSHINOBU ,  TAKAOKA MAKOTO ,  SHISHIZUKA JUNICHI ,  SHIMOMURA YUKARI ,  MATSUMOTO KENTARO ,  UDA TOYOKAZU ,  SUGIYAMA MITSUMASA ,  KOBAYASHI SHIGETADA ,  HISADA KATSUTOSHI ,  KANEKO YOJI ,  NAKANISHI HIROYUKI

IPC: H04N1/04 ,  H04N1/60 ,  H04N1/64 ,  H04N1/46 ,  H04N7/01

公开(公告)号：DE3520051A1

公开(公告)日：1985-12-05

申请号：DE3520051

申请日：1985-06-04

Applicant: CANON KK

Inventor： HISADA KATSUTOSHI

IPC: H03M7/42 ,  H04N1/419

Abstract: An apparatus for decoding compressed image codes ensures exact synchronization of decoded image signals by differentiating the decoding process in response to the detection of a particular code.