JPS6477238A - Communication equipment - Google Patents

Communication equipment

Info

Publication number
JPS6477238A
JPS6477238A JP62232427A JP23242787A JPS6477238A JP S6477238 A JPS6477238 A JP S6477238A JP 62232427 A JP62232427 A JP 62232427A JP 23242787 A JP23242787 A JP 23242787A JP S6477238 A JPS6477238 A JP S6477238A
Authority
JP
Japan
Prior art keywords
mode
retransmission
error
communication
destination
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.)
Granted
Application number
JP62232427A
Other languages
Japanese (ja)
Other versions
JP2592855B2 (en
Inventor
Takehiro Yoshida
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62232427A priority Critical patent/JP2592855B2/en
Publication of JPS6477238A publication Critical patent/JPS6477238A/en
Application granted granted Critical
Publication of JP2592855B2 publication Critical patent/JP2592855B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/26—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton
    • C07C17/32—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by introduction of halogenated alkyl groups into ring compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To selectively perform transmission for errors in accordance with the reception mode of a communication destination by detecting whether the error retransmission mode of this destination is the full duplex mode or the half duplex made. CONSTITUTION:Communication of the error retransmission mode is tried in the full duplex mode. Results from three tries are stored in a storage circuit 30. When communication with the same destination is performed again, results from three past communications are checked. If all of these results indicate errors the mode of error retransmission is switched to the half duplex mode to try transmission, and the number of communications after three past failures in transmission is counted. A control circuit 34 detects the reception mode of error retransmission information in the calling side on the basis of data in a storage circuit 30 and performs retransmission for error in accordance with the detected reception mode. With respect to retransmission inquiry from the called side, '0' or '1' is added to a specific bit of the response signal of the calling side.
JP62232427A 1987-09-18 1987-09-18 Communication device Expired - Lifetime JP2592855B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62232427A JP2592855B2 (en) 1987-09-18 1987-09-18 Communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62232427A JP2592855B2 (en) 1987-09-18 1987-09-18 Communication device

Publications (2)

Publication Number Publication Date
JPS6477238A true JPS6477238A (en) 1989-03-23
JP2592855B2 JP2592855B2 (en) 1997-03-19

Family

ID=16939098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62232427A Expired - Lifetime JP2592855B2 (en) 1987-09-18 1987-09-18 Communication device

Country Status (1)

Country Link
JP (1) JP2592855B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61234659A (en) * 1985-04-10 1986-10-18 Canon Inc Communication equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61234659A (en) * 1985-04-10 1986-10-18 Canon Inc Communication equipment

Also Published As

Publication number Publication date
JP2592855B2 (en) 1997-03-19

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