JPS5541080A - Coder for video signal - Google Patents

Coder for video signal

Info

Publication number
JPS5541080A
JPS5541080A JP11535778A JP11535778A JPS5541080A JP S5541080 A JPS5541080 A JP S5541080A JP 11535778 A JP11535778 A JP 11535778A JP 11535778 A JP11535778 A JP 11535778A JP S5541080 A JPS5541080 A JP S5541080A
Authority
JP
Japan
Prior art keywords
fed
signal
coding
predicted
coder
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
JP11535778A
Other languages
Japanese (ja)
Inventor
Toru Usubuchi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11535778A priority Critical patent/JPS5541080A/en
Priority to GB7905760A priority patent/GB2016872B/en
Priority to US06/014,508 priority patent/US4215375A/en
Publication of JPS5541080A publication Critical patent/JPS5541080A/en
Pending legal-status Critical Current

Links

Landscapes

  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE: To efficiently perform the coding of paper including picture, by selecting one pair among the predicted error signal and the predicted state signal obtained from a plurality of prediction means through the comparison of the number of unpredicted case for the predicted error signal and by coding through the use of this.
CONSTITUTION: In coding the video signal including network picture and characters, the input video signal 1 is fed to a plurality of prediction units 4 and 5, the output of the prediction units 4 and 5 is controlled with the control signal from the timing generation circuit 6 inputting the clock 2 and the phase signal 3, and the predicted state signal and the predicted error signal are fed to the shift registers 11 and 12. Further, it is fed to the counters 9 and 10 via the logical product gates 7 and 8, the number of not predicted cases is fed to the comparator 14 with the control signal of the circuit 6, and the selected signal as the result of comparison is fed to the coder 17. Further, the output of the registers 11 and 12 is fed to the coder 17 via the multiplexers 15 and 16 to efficiently perform the coding of paper including picture according to the timing of the circuit 6.
COPYRIGHT: (C)1980,JPO&Japio
JP11535778A 1978-02-23 1978-09-19 Coder for video signal Pending JPS5541080A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP11535778A JPS5541080A (en) 1978-09-19 1978-09-19 Coder for video signal
GB7905760A GB2016872B (en) 1978-02-23 1979-02-19 Digital facsimile transmission system for screened pictures
US06/014,508 US4215375A (en) 1978-02-23 1979-02-23 Digital facsimile transmission system for screened pictures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11535778A JPS5541080A (en) 1978-09-19 1978-09-19 Coder for video signal

Publications (1)

Publication Number Publication Date
JPS5541080A true JPS5541080A (en) 1980-03-22

Family

ID=14660518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11535778A Pending JPS5541080A (en) 1978-02-23 1978-09-19 Coder for video signal

Country Status (1)

Country Link
JP (1) JPS5541080A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03274967A (en) * 1990-03-26 1991-12-05 Canon Inc Picture coder
JPH046954A (en) * 1990-04-24 1992-01-10 Canon Inc Picture prediction coding system

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03274967A (en) * 1990-03-26 1991-12-05 Canon Inc Picture coder
JPH046954A (en) * 1990-04-24 1992-01-10 Canon Inc Picture prediction coding system

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