JPS5468610A - Recording and reproducing system of address signal in disc- shaped recording medium having spiral recording track - Google Patents

Recording and reproducing system of address signal in disc- shaped recording medium having spiral recording track

Info

Publication number
JPS5468610A
JPS5468610A JP13589077A JP13589077A JPS5468610A JP S5468610 A JPS5468610 A JP S5468610A JP 13589077 A JP13589077 A JP 13589077A JP 13589077 A JP13589077 A JP 13589077A JP S5468610 A JPS5468610 A JP S5468610A
Authority
JP
Japan
Prior art keywords
address signal
signal
recording
frequency
code form
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
JP13589077A
Other languages
Japanese (ja)
Inventor
Hideo Sato
Isao Masuda
Kazunori Nishikawa
Hideo Onoe
Masami Yamazaki
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP13589077A priority Critical patent/JPS5468610A/en
Publication of JPS5468610A publication Critical patent/JPS5468610A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE: To take out two kinds of information, address signal and noise, by a simple frequency separating means at the time of reproduction, by modulating pilot signal for noise detection using signal of code form capable of self-clock as address signal.
CONSTITUTION: A frequency modulator B9 supplies a modulated wave Sfa, which is a carrier SF9 of frequency f9 placed outside of the occupied bandwidth of main information signal frequency-modulated by an address signal Sa of code form capable of self-clock sent out from an address signal generator AS, into a frequency modulator C. The signal generator AS changes the series code form numerical signal sent out from a shift register SR into an address signal Sa of code form capable of self-clock through PM system or other method. Hence, the modulated wave from the modulator B9 does not contain information due to address signal in the vicinity of the carrier Sf9. Accordingly, when reproducing, both address signal and noise may be obtained from the demodulated signal of the wave to be modulated by address signal.
COPYRIGHT: (C)1979,JPO&Japio
JP13589077A 1977-11-12 1977-11-12 Recording and reproducing system of address signal in disc- shaped recording medium having spiral recording track Pending JPS5468610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13589077A JPS5468610A (en) 1977-11-12 1977-11-12 Recording and reproducing system of address signal in disc- shaped recording medium having spiral recording track

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13589077A JPS5468610A (en) 1977-11-12 1977-11-12 Recording and reproducing system of address signal in disc- shaped recording medium having spiral recording track

Publications (1)

Publication Number Publication Date
JPS5468610A true JPS5468610A (en) 1979-06-01

Family

ID=15162180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13589077A Pending JPS5468610A (en) 1977-11-12 1977-11-12 Recording and reproducing system of address signal in disc- shaped recording medium having spiral recording track

Country Status (1)

Country Link
JP (1) JPS5468610A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023856A (en) * 1986-10-06 1991-06-11 U.S. Philips Corporation Optically readable record carrier for recording information, apparatus for manufacturing such a record carrier, apparatus for recording information on such a record carrier, and apparatus for reading information recorded on such a record carrier
US5339301A (en) * 1986-10-06 1994-08-16 U.S. Philips Corporation Optically readable record carrier for recording information, method and apparatus for manufacturing such, apparatus for recording and reading information on a such a record carrier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023856A (en) * 1986-10-06 1991-06-11 U.S. Philips Corporation Optically readable record carrier for recording information, apparatus for manufacturing such a record carrier, apparatus for recording information on such a record carrier, and apparatus for reading information recorded on such a record carrier
US5339301A (en) * 1986-10-06 1994-08-16 U.S. Philips Corporation Optically readable record carrier for recording information, method and apparatus for manufacturing such, apparatus for recording and reading information on a such a record carrier

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