JPS5443611A - Encoding system for facsimile signal - Google Patents

Encoding system for facsimile signal

Info

Publication number
JPS5443611A
JPS5443611A JP10990477A JP10990477A JPS5443611A JP S5443611 A JPS5443611 A JP S5443611A JP 10990477 A JP10990477 A JP 10990477A JP 10990477 A JP10990477 A JP 10990477A JP S5443611 A JPS5443611 A JP S5443611A
Authority
JP
Japan
Prior art keywords
scanning line
memory
forecast
encoding
supplied
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
JP10990477A
Other languages
Japanese (ja)
Inventor
Yuzo Omiya
Kunihiko Sekiya
Hideo Amano
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10990477A priority Critical patent/JPS5443611A/en
Publication of JPS5443611A publication Critical patent/JPS5443611A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE: To increase the compression efficiency by giving a forecast process from the picture element of the previous scanning line with which the encodong is through.
CONSTITUTION: The binary signal of the n-th scanning line in memory 11a is supplied to forecast unit 12, along with the facsimile signals of the n + 1st scanning line of delay circuit D1 and D2. The code system of the n + 1st scanning line with which the forecast process is through is stored in memory 11b, and the contents of memory 11a and 11b are supplied by one bit to reference change picture element position detecting circuit 13a and out-of-forecast position detecting circuit 13b. The specified addresses of these circuits 13 and held in register 14a and 14b, and the relative distance between the specified addresses is detected through comparator 15. According to the comparison result, the encoding is given through encoders 17a∼17c, and the encoded value is stored in buffer memory 18. In the same way, the encoding is given to each scanning line in sequence.
COPYRIGHT: (C)1979,JPO&Japio
JP10990477A 1977-09-14 1977-09-14 Encoding system for facsimile signal Pending JPS5443611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10990477A JPS5443611A (en) 1977-09-14 1977-09-14 Encoding system for facsimile signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10990477A JPS5443611A (en) 1977-09-14 1977-09-14 Encoding system for facsimile signal

Publications (1)

Publication Number Publication Date
JPS5443611A true JPS5443611A (en) 1979-04-06

Family

ID=14522094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10990477A Pending JPS5443611A (en) 1977-09-14 1977-09-14 Encoding system for facsimile signal

Country Status (1)

Country Link
JP (1) JPS5443611A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5286012A (en) * 1976-01-12 1977-07-16 Nec Corp Prediction coding device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5286012A (en) * 1976-01-12 1977-07-16 Nec Corp Prediction coding device

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