JPS6441572A - Coding system - Google Patents

Coding system

Info

Publication number
JPS6441572A
JPS6441572A JP62198432A JP19843287A JPS6441572A JP S6441572 A JPS6441572 A JP S6441572A JP 62198432 A JP62198432 A JP 62198432A JP 19843287 A JP19843287 A JP 19843287A JP S6441572 A JPS6441572 A JP S6441572A
Authority
JP
Japan
Prior art keywords
density value
density
picture element
bit
difference
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.)
Pending
Application number
JP62198432A
Other languages
Japanese (ja)
Inventor
Hisashi Matsuyama
Hiroyuki Hayazaki
Yoshinori Saitou
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP62198432A priority Critical patent/JPS6441572A/en
Publication of JPS6441572A publication Critical patent/JPS6441572A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To compress image information by comparing a picture element shown by an (n) bit with the density value of the picture element before it, allocating, when a density difference is shown by an (m) bit smaller than the (n), the density deference shown by the (m) bit and allocating the density value of the (n) bit in other cases. CONSTITUTION:An image fetched by a CCD camera 1 has the density value of 16 gradations in which one picture element is shown by the PCM code of 4 bits as a half tone, and the image is composed of the 90X90 elements. For a first (a head) picture element of one line, the density value is made into zero, and the difference from the density value of a second picture element is obtained. When the density difference is within + or -3, a prescribed compressing code corresponding to the density difference is added. When the density value is above + or -3, a prescribed identifying code, which indicates that the 4 bits are the PCM code, and the PCM code of such a density value are allocated. In such a way, the data of the portion of one screen are compression-coded and sent.
JP62198432A 1987-08-07 1987-08-07 Coding system Pending JPS6441572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62198432A JPS6441572A (en) 1987-08-07 1987-08-07 Coding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62198432A JPS6441572A (en) 1987-08-07 1987-08-07 Coding system

Publications (1)

Publication Number Publication Date
JPS6441572A true JPS6441572A (en) 1989-02-13

Family

ID=16390988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62198432A Pending JPS6441572A (en) 1987-08-07 1987-08-07 Coding system

Country Status (1)

Country Link
JP (1) JPS6441572A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007507182A (en) * 2003-09-25 2007-03-22 ピアレス・システムズ・コーポレーション Divided run-length encoding method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007507182A (en) * 2003-09-25 2007-03-22 ピアレス・システムズ・コーポレーション Divided run-length encoding method and apparatus
KR101180098B1 (en) * 2003-09-25 2012-09-05 피어리스 시스템즈 코퍼레이션 Split runlength encoding method and apparatus

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