JPS5573157A - Data communication system - Google Patents

Data communication system

Info

Publication number
JPS5573157A
JPS5573157A JP14528278A JP14528278A JPS5573157A JP S5573157 A JPS5573157 A JP S5573157A JP 14528278 A JP14528278 A JP 14528278A JP 14528278 A JP14528278 A JP 14528278A JP S5573157 A JPS5573157 A JP S5573157A
Authority
JP
Japan
Prior art keywords
data
transmission
error
circuit
detected
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
JP14528278A
Other languages
Japanese (ja)
Inventor
Kazumasa Kumakura
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14528278A priority Critical patent/JPS5573157A/en
Publication of JPS5573157A publication Critical patent/JPS5573157A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1692—Physical properties of the supervisory signal, e.g. acknowledgement by energy bursts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1657—Implicit acknowledgement of correct or incorrect reception, e.g. with a moving window

Abstract

PURPOSE:To realize a high-speed process for the data in a simple and low-cost constitution by sending back the answer signal only in case no error is detected in the reception data block at the reception side and then transmitting again the data at the transmission side only when no answer signal exists. CONSTITUTION:The ACK signal of the single frequency is transmitted to the transmission sode from affirmative answer character ACK signal generator circuit A only when no error is detected through error detector circuit E for the data blocks which are received in sequence at the reception side. While at the transmission side, the answer signal is detected at detector circuit D, and then the next data of buffer B2 is read out through buffer reading control circuit BR and based on the output signal. And the block number is given at transmission data formation circuit N for transmission of the data. No ACK signal is delivered at the reception side when some error is detected at the block data, and thus detector circuit D of the transmission side detects the error. And circuit BR gives switching to buffer B0 again after transmission of data BL1 to transmit data BL0 again.
JP14528278A 1978-11-27 1978-11-27 Data communication system Pending JPS5573157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14528278A JPS5573157A (en) 1978-11-27 1978-11-27 Data communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14528278A JPS5573157A (en) 1978-11-27 1978-11-27 Data communication system

Publications (1)

Publication Number Publication Date
JPS5573157A true JPS5573157A (en) 1980-06-02

Family

ID=15381526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14528278A Pending JPS5573157A (en) 1978-11-27 1978-11-27 Data communication system

Country Status (1)

Country Link
JP (1) JPS5573157A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797249A (en) * 1980-12-09 1982-06-16 Ricoh Co Ltd Data transmission system
JPS5797250A (en) * 1980-12-09 1982-06-16 Ricoh Co Ltd Data transmission system for automatic retransmission request system
JPS58157231A (en) * 1982-03-15 1983-09-19 Matsushita Electric Works Ltd Bidirectional wireless device
JPS6158357A (en) * 1984-08-30 1986-03-25 Fujitsu Ltd Data communication system
US5274667A (en) * 1992-10-23 1993-12-28 David Olmstead Adaptive data rate packet communications system
US5657005A (en) * 1991-08-31 1997-08-12 Temic Telefunken Microelectronic Gmbh Operation of a system using a remote control
US5657342A (en) * 1992-10-23 1997-08-12 Olmstead; David Adaptive data rate packet communication system
JP2002135233A (en) * 2000-09-12 2002-05-10 Lucent Technol Inc Method and apparatus for asynchronous incremental redundancy reception in communication system
WO2007052719A1 (en) * 2005-11-01 2007-05-10 Ntt Docomo, Inc. Retransmission control method and receiving-end apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998506A (en) * 1973-01-22 1974-09-18
JPS5345909A (en) * 1976-10-08 1978-04-25 Okura Denki Co Ltd System for identifying transmission result at transmitting station

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4998506A (en) * 1973-01-22 1974-09-18
JPS5345909A (en) * 1976-10-08 1978-04-25 Okura Denki Co Ltd System for identifying transmission result at transmitting station

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797249A (en) * 1980-12-09 1982-06-16 Ricoh Co Ltd Data transmission system
JPS5797250A (en) * 1980-12-09 1982-06-16 Ricoh Co Ltd Data transmission system for automatic retransmission request system
JPS58157231A (en) * 1982-03-15 1983-09-19 Matsushita Electric Works Ltd Bidirectional wireless device
JPS6158357A (en) * 1984-08-30 1986-03-25 Fujitsu Ltd Data communication system
US5657005A (en) * 1991-08-31 1997-08-12 Temic Telefunken Microelectronic Gmbh Operation of a system using a remote control
US5274667A (en) * 1992-10-23 1993-12-28 David Olmstead Adaptive data rate packet communications system
US5657342A (en) * 1992-10-23 1997-08-12 Olmstead; David Adaptive data rate packet communication system
JP2002135233A (en) * 2000-09-12 2002-05-10 Lucent Technol Inc Method and apparatus for asynchronous incremental redundancy reception in communication system
WO2007052719A1 (en) * 2005-11-01 2007-05-10 Ntt Docomo, Inc. Retransmission control method and receiving-end apparatus
JPWO2007052719A1 (en) * 2005-11-01 2009-04-30 株式会社エヌ・ティ・ティ・ドコモ Retransmission control method and receiving apparatus

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