JPS55125584A - Information recording disk with encoder - Google Patents

Information recording disk with encoder

Info

Publication number
JPS55125584A
JPS55125584A JP3357079A JP3357079A JPS55125584A JP S55125584 A JPS55125584 A JP S55125584A JP 3357079 A JP3357079 A JP 3357079A JP 3357079 A JP3357079 A JP 3357079A JP S55125584 A JPS55125584 A JP S55125584A
Authority
JP
Japan
Prior art keywords
bit
disk
recording
fixed
frequency
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
JP3357079A
Other languages
Japanese (ja)
Inventor
Taiji Tsunoda
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP3357079A priority Critical patent/JPS55125584A/en
Publication of JPS55125584A publication Critical patent/JPS55125584A/en
Pending legal-status Critical Current

Links

Landscapes

  • Rotational Drive Of Disk (AREA)

Abstract

PURPOSE: To realize the continuous formation of the encorder recording bit featuring the high accuracy and high division, by turning the original disk in a fixed speed and then irradiating the energy beam controlled with the fixed frequency to the the original disk.
CONSTITUTION: Master original disk 1 is turned in a fixed speed by means of rotary device M which features the accurate turning, and the laser beam or the like is irradiated on the recording layer. This beam is controlled with the fixed frequency, and the irradiation is given and discontinued repetitively in accordance with the frequency to move sequentially toward the radius of the original disk. As a result, encoder recording bit 4 is formed on the recording layer in the form of the track with the length and the space which are decided by the rotational speed of disk 1 and the control frequency of the energy beam. And bit 4 is recorded so as to form a fan-shape in which the bit groups 6 are arranged in one row when viewed from the rotational center, thus forming plural number of tracks with one unit of bit 4 formed with every fixed rotational angle and toward the track. In such way, the information recording disk featuring the high-accuracy and high-division recording bit can be obtained continuously.
COPYRIGHT: (C)1980,JPO&Japio
JP3357079A 1979-03-22 1979-03-22 Information recording disk with encoder Pending JPS55125584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3357079A JPS55125584A (en) 1979-03-22 1979-03-22 Information recording disk with encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3357079A JPS55125584A (en) 1979-03-22 1979-03-22 Information recording disk with encoder

Publications (1)

Publication Number Publication Date
JPS55125584A true JPS55125584A (en) 1980-09-27

Family

ID=12390198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3357079A Pending JPS55125584A (en) 1979-03-22 1979-03-22 Information recording disk with encoder

Country Status (1)

Country Link
JP (1) JPS55125584A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5157403A (en) * 1974-11-15 1976-05-19 Hitachi Ltd KAITENKENSHUTSUTORATSUKUOJUSURUKAITENTAIGATAKIROKUBAITAI
JPS52124312A (en) * 1976-04-10 1977-10-19 Philips Nv Information carrier and magnetic information carrier writing and or reading device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5157403A (en) * 1974-11-15 1976-05-19 Hitachi Ltd KAITENKENSHUTSUTORATSUKUOJUSURUKAITENTAIGATAKIROKUBAITAI
JPS52124312A (en) * 1976-04-10 1977-10-19 Philips Nv Information carrier and magnetic information carrier writing and or reading device

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