JPS5527777A - Control system for picture signal transmission - Google Patents

Control system for picture signal transmission

Info

Publication number
JPS5527777A
JPS5527777A JP10113978A JP10113978A JPS5527777A JP S5527777 A JPS5527777 A JP S5527777A JP 10113978 A JP10113978 A JP 10113978A JP 10113978 A JP10113978 A JP 10113978A JP S5527777 A JPS5527777 A JP S5527777A
Authority
JP
Japan
Prior art keywords
picture signal
error
transmission
velocity
control system
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
JP10113978A
Other languages
Japanese (ja)
Inventor
Yoshio Iizuka
Tetsuo Morita
Hisayasu Osawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP10113978A priority Critical patent/JPS5527777A/en
Publication of JPS5527777A publication Critical patent/JPS5527777A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. van Duuren system ; ARQ protocols
    • H04L1/1867Arrangements specific to the transmitter end

Abstract

PURPOSE:To secure an effective transmission of the picture signal featuring reduced error when the circuit state varies by selecting the transmission velocity of the transmission side in accordance with the amount of error of the reception picture signal information. CONSTITUTION:The error of the received picture signal information is detected 11 with every fixed section of the information, and the transmission velocity of the transmission side is selected to the highest level with which the error amount becomes minimum in accordance with the error amount. Then the velocity switching control 10 is carried out.
JP10113978A 1978-08-19 1978-08-19 Control system for picture signal transmission Pending JPS5527777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10113978A JPS5527777A (en) 1978-08-19 1978-08-19 Control system for picture signal transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10113978A JPS5527777A (en) 1978-08-19 1978-08-19 Control system for picture signal transmission

Publications (1)

Publication Number Publication Date
JPS5527777A true JPS5527777A (en) 1980-02-28

Family

ID=14292741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10113978A Pending JPS5527777A (en) 1978-08-19 1978-08-19 Control system for picture signal transmission

Country Status (1)

Country Link
JP (1) JPS5527777A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799048A (en) * 1980-12-12 1982-06-19 Fujitsu Ltd Modulator and demodulator device
JPS5991752A (en) * 1982-11-18 1984-05-26 Japanese National Railways<Jnr> Switching system of transmission speed

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131610A (en) * 1973-04-22 1974-12-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49131610A (en) * 1973-04-22 1974-12-17

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799048A (en) * 1980-12-12 1982-06-19 Fujitsu Ltd Modulator and demodulator device
JPS6237583B2 (en) * 1980-12-12 1987-08-13 Fujitsu Ltd
JPS5991752A (en) * 1982-11-18 1984-05-26 Japanese National Railways<Jnr> Switching system of transmission speed
JPH0342533B2 (en) * 1982-11-18 1991-06-27

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