JPS5286004A - Data entry unit system - Google Patents

Data entry unit system

Info

Publication number
JPS5286004A
JPS5286004A JP15041076A JP15041076A JPS5286004A JP S5286004 A JPS5286004 A JP S5286004A JP 15041076 A JP15041076 A JP 15041076A JP 15041076 A JP15041076 A JP 15041076A JP S5286004 A JPS5286004 A JP S5286004A
Authority
JP
Japan
Prior art keywords
data entry
unit system
entry unit
data
unit
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
JP15041076A
Other languages
English (en)
Inventor
Ruisu Aanto Richiyaado
Richiyaado Teiiru Toomasu
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPS5286004A publication Critical patent/JPS5286004A/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/423—Loop networks with centralised control, e.g. polling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/06—Speed or phase control by synchronisation signals the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Credit Cards Or The Like (AREA)
JP15041076A 1976-01-12 1976-12-16 Data entry unit system Pending JPS5286004A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/648,446 US4004275A (en) 1976-01-12 1976-01-12 Self-clocking data entry unit system

Publications (1)

Publication Number Publication Date
JPS5286004A true JPS5286004A (en) 1977-07-16

Family

ID=24600809

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15041076A Pending JPS5286004A (en) 1976-01-12 1976-12-16 Data entry unit system

Country Status (4)

Country Link
US (1) US4004275A (ja)
JP (1) JPS5286004A (ja)
DE (1) DE2648078A1 (ja)
GB (1) GB1515430A (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE393723B (sv) * 1975-09-18 1977-05-16 Philips Svenska Ab Sett att overfora data mellan en centralstation och ett antal terminalstationer via en sluten serieoverforingsslinga samt anleggning for utforande av settet
JPS5745757A (en) * 1980-09-03 1982-03-15 Hitachi Ltd Ring type communication system of equal level
DE3164961D1 (en) * 1981-03-11 1984-08-30 Kb Alf Onnestam Alfadata Method and apparatus, e.g. in a data distribution system for, inter alia, avoiding distortion in transfer of signal states
US4707842A (en) * 1985-04-03 1987-11-17 Siemens Aktiengesellschaft Apparatus and method for acquiring data and clock pulses from asynchronous data signals
NL9000608A (nl) * 1990-03-16 1991-10-16 Locamation Beheer B V Communicatiestelsel.
US5363367A (en) * 1991-09-19 1994-11-08 Honda Giken Kogyo Kabushiki Kaisha Data transmission system using an optical fiber loop
US7535964B2 (en) * 2005-08-31 2009-05-19 Maxim Integrated Products, Inc. Self-clocked two-level differential signaling methods and apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688036A (en) * 1970-06-30 1972-08-29 George F Bland Binary data transmission system and clocking means therefor
US3680050A (en) * 1970-07-10 1972-07-25 Gen Electric Serial digital pulse phase interface driver and receiver
US3781478A (en) * 1972-07-07 1973-12-25 Bell Telephone Labor Inc Multiplex communication system
US3893033A (en) * 1974-05-02 1975-07-01 Honeywell Inf Systems Apparatus for producing timing signals that are synchronized with asynchronous data signals
US3967062A (en) * 1975-03-05 1976-06-29 Ncr Corporation Method and apparatus for encoding data and clock information in a self-clocking data stream

Also Published As

Publication number Publication date
US4004275A (en) 1977-01-18
DE2648078A1 (de) 1977-07-21
GB1515430A (en) 1978-06-21

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