JPS5616945A - Address reading system of straight line retrieval - Google Patents

Address reading system of straight line retrieval

Info

Publication number
JPS5616945A
JPS5616945A JP9149579A JP9149579A JPS5616945A JP S5616945 A JPS5616945 A JP S5616945A JP 9149579 A JP9149579 A JP 9149579A JP 9149579 A JP9149579 A JP 9149579A JP S5616945 A JPS5616945 A JP S5616945A
Authority
JP
Japan
Prior art keywords
addresses
address
reading
coincidence
straight line
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
JP9149579A
Other languages
Japanese (ja)
Inventor
Keiji Kamimura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9149579A priority Critical patent/JPS5616945A/en
Publication of JPS5616945A publication Critical patent/JPS5616945A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs

Landscapes

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To enable to surely read out the address at minimum time, by comparing the addresses of the fields of even number and odd number after reading and performing the reading and comparison when no coincidence of address is obtained, until the maximum reading repetitive number is obtained. CONSTITUTION:The reading of addresses is made immediately after a voltage is fed to the galvano-mirror to be jumped to the adjacent track compulsively, allowing to compare the addresses of the fields of even number and odd number repetitively. If no coincidence of addresses is obtained, the reading and comparison of the addresses are repetitively made as far as the coincidence is not obtained, until the maximum reading repetitive number preset is obtained. If no coincidence of the addresses is further obtained, the addition of + or -1 to the address of preceding track is taken as the address of the track and the processing is moved to the next stage. Thus, the retrieved time can be minimized, allowing to detect the address surely.
JP9149579A 1979-07-20 1979-07-20 Address reading system of straight line retrieval Pending JPS5616945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9149579A JPS5616945A (en) 1979-07-20 1979-07-20 Address reading system of straight line retrieval

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9149579A JPS5616945A (en) 1979-07-20 1979-07-20 Address reading system of straight line retrieval

Publications (1)

Publication Number Publication Date
JPS5616945A true JPS5616945A (en) 1981-02-18

Family

ID=14027985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9149579A Pending JPS5616945A (en) 1979-07-20 1979-07-20 Address reading system of straight line retrieval

Country Status (1)

Country Link
JP (1) JPS5616945A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58114638A (en) * 1981-12-28 1983-07-08 Fujitsu Ltd Optical bus network system
JPS6243294A (en) * 1985-08-20 1987-02-25 Victor Co Of Japan Ltd Test signal generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58114638A (en) * 1981-12-28 1983-07-08 Fujitsu Ltd Optical bus network system
JPS6211536B2 (en) * 1981-12-28 1987-03-13 Fujitsu Ltd
JPS6243294A (en) * 1985-08-20 1987-02-25 Victor Co Of Japan Ltd Test signal generator

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