JPS6468189A - Packet abort compensation system in moving image packet transmission - Google Patents

Packet abort compensation system in moving image packet transmission

Info

Publication number
JPS6468189A
JPS6468189A JP62224102A JP22410287A JPS6468189A JP S6468189 A JPS6468189 A JP S6468189A JP 62224102 A JP62224102 A JP 62224102A JP 22410287 A JP22410287 A JP 22410287A JP S6468189 A JPS6468189 A JP S6468189A
Authority
JP
Japan
Prior art keywords
line
packet
abort
circuit
aborted
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
JP62224102A
Other languages
Japanese (ja)
Inventor
Katsutoshi Manabe
Fumio Kishino
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP62224102A priority Critical patent/JPS6468189A/en
Publication of JPS6468189A publication Critical patent/JPS6468189A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

PURPOSE:To suppress the distortion of a video image sent caused by packet abort by utilizing a strong spatial correlation of a video signal when packet abort takes place and compensating a missing line with an adjacent line and making the frame memory at the sender side and the receiver side coincident without resending the data. CONSTITUTION:The digitized video signal is subject to difference signal with the preceding frame by a subtraction circuit T3, a variable length coding utilizing the statistical property is assigned to an inter-frame difference signal in a variable length coding circuit T6 and the variable length code string by one line is sent to a reception section via a packet transmission circuit T9. When a line information detection circuit R3 of the reception section recognizes a line caused with packet abort, then the control circuit R11 throws the selector switch R8 to the position of B and the line whose packet is aborted is replaced with the preceding line and the result is outputted. Then the abort line number is sent by the packet abort notice circuit R12 to throw the selector switch R8 to the position A. The sender side receives the aborted line number and the aborted line takes the inter-frame difference from the preceding line.
JP62224102A 1987-09-09 1987-09-09 Packet abort compensation system in moving image packet transmission Pending JPS6468189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62224102A JPS6468189A (en) 1987-09-09 1987-09-09 Packet abort compensation system in moving image packet transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62224102A JPS6468189A (en) 1987-09-09 1987-09-09 Packet abort compensation system in moving image packet transmission

Publications (1)

Publication Number Publication Date
JPS6468189A true JPS6468189A (en) 1989-03-14

Family

ID=16808574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62224102A Pending JPS6468189A (en) 1987-09-09 1987-09-09 Packet abort compensation system in moving image packet transmission

Country Status (1)

Country Link
JP (1) JPS6468189A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594316A3 (en) * 1992-10-20 1995-02-15 Canon Information Syst Inc Digital video editor with lost video frame protection.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594316A3 (en) * 1992-10-20 1995-02-15 Canon Information Syst Inc Digital video editor with lost video frame protection.

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