JPS6412765A - Image transmission method - Google Patents

Image transmission method

Info

Publication number
JPS6412765A
JPS6412765A JP16948287A JP16948287A JPS6412765A JP S6412765 A JPS6412765 A JP S6412765A JP 16948287 A JP16948287 A JP 16948287A JP 16948287 A JP16948287 A JP 16948287A JP S6412765 A JPS6412765 A JP S6412765A
Authority
JP
Japan
Prior art keywords
image
line
data
grade
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP16948287A
Other languages
Japanese (ja)
Other versions
JP2535926B2 (en
Inventor
Makoto Takayama
Migaku Yamagami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP16948287A priority Critical patent/JP2535926B2/en
Publication of JPS6412765A publication Critical patent/JPS6412765A/en
Application granted granted Critical
Publication of JP2535926B2 publication Critical patent/JP2535926B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Detection And Prevention Of Errors In Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

PURPOSE:To prevent the compression efficiency of an image from being lowered and to improve the transmission efficiency of image data, by dividing the image into one or plural blocks, compressing the image at every block, and framing and transmitting each line of compressed data at every image element obtained by dividing by an integer value M corresponding to the grade of a transmission path. CONSTITUTION:A picture consisting of (aXb) image elements is divided by a fixed divider N in a vertical direction, and separates it to N blocks. The one-dimensional predictive encoding of data in a first line is applied at every block, and two-dimensional encoding is applied on the other lines. Where, the data amount of one transmission frame is decided by dividing each line by the divider M corresponding to the grade of the transmission path. When the M is set at 1 which shows the best grade, the data of (b) image elements of one line are transmitted in one frame comprehensively. When the M is set at >=2, b/M image elements of a remarked line are made into a frame, and (b) image element data of the remarked line are sent by sending the above frame for M times. Therefore, it is possible to perform data transmission corresponding to the grade of the transmission path as keeping the compressibility of the image element fixed.
JP16948287A 1987-07-07 1987-07-07 Image transmission method Expired - Fee Related JP2535926B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16948287A JP2535926B2 (en) 1987-07-07 1987-07-07 Image transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16948287A JP2535926B2 (en) 1987-07-07 1987-07-07 Image transmission method

Publications (2)

Publication Number Publication Date
JPS6412765A true JPS6412765A (en) 1989-01-17
JP2535926B2 JP2535926B2 (en) 1996-09-18

Family

ID=15887354

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16948287A Expired - Fee Related JP2535926B2 (en) 1987-07-07 1987-07-07 Image transmission method

Country Status (1)

Country Link
JP (1) JP2535926B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192262A (en) * 1988-08-25 1990-07-30 Ricoh Co Ltd Facsimile equipment
JP2003503946A (en) * 1999-07-02 2003-01-28 エリクソン インコーポレイテッド Flexible error protection method in communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192262A (en) * 1988-08-25 1990-07-30 Ricoh Co Ltd Facsimile equipment
JP2003503946A (en) * 1999-07-02 2003-01-28 エリクソン インコーポレイテッド Flexible error protection method in communication system

Also Published As

Publication number Publication date
JP2535926B2 (en) 1996-09-18

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Legal Events

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