JPS5595142A - Access system for pattern information - Google Patents

Access system for pattern information

Info

Publication number
JPS5595142A
JPS5595142A JP185879A JP185879A JPS5595142A JP S5595142 A JPS5595142 A JP S5595142A JP 185879 A JP185879 A JP 185879A JP 185879 A JP185879 A JP 185879A JP S5595142 A JPS5595142 A JP S5595142A
Authority
JP
Japan
Prior art keywords
pattern information
disk
track
information
deflector
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
JP185879A
Other languages
Japanese (ja)
Inventor
Hiroyoshi Funato
Takashi Yokota
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 JP185879A priority Critical patent/JPS5595142A/en
Publication of JPS5595142A publication Critical patent/JPS5595142A/en
Pending legal-status Critical Current

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  • Digital Computer Display Output (AREA)

Abstract

PURPOSE: To obtain a pattern-information access system of high precision at low cost by allowing a track selector, which selects a track by deflecting an access beam, to deflect the beam exceeding its selection extent.
CONSTITUTION: As for access to pattern information 1, escape deflection is brought to effect by adjusting galvano-mirror photo deflector 10 so that during the rotation drive of phonogram disk 2, a beam from laser 8 will be emitted to a position outside of track range (d) in the radius direction of disk 2. Next, after the positioning of disk 2 ends, reflex mirror 101 of deflector 10 is moved to irradiate pattern information on a fixed track of disk 2 with the beam and the pattern information is sent to the photoelectric surface of pickup tube 5 and exposed. Then, deflector 10 is driven for escape deflection. At this time, information exposed to pickup tube 5 is erased. According to external commands, the pickup unit performs the above-mentioned operations repeatedly in sequence to send the pattern information to an external output unit.
COPYRIGHT: (C)1980,JPO&Japio
JP185879A 1979-01-09 1979-01-09 Access system for pattern information Pending JPS5595142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP185879A JPS5595142A (en) 1979-01-09 1979-01-09 Access system for pattern information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP185879A JPS5595142A (en) 1979-01-09 1979-01-09 Access system for pattern information

Publications (1)

Publication Number Publication Date
JPS5595142A true JPS5595142A (en) 1980-07-19

Family

ID=11513235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP185879A Pending JPS5595142A (en) 1979-01-09 1979-01-09 Access system for pattern information

Country Status (1)

Country Link
JP (1) JPS5595142A (en)

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