JPS5589921A - Optical recording and reproducing unit - Google Patents

Optical recording and reproducing unit

Info

Publication number
JPS5589921A
JPS5589921A JP16348878A JP16348878A JPS5589921A JP S5589921 A JPS5589921 A JP S5589921A JP 16348878 A JP16348878 A JP 16348878A JP 16348878 A JP16348878 A JP 16348878A JP S5589921 A JPS5589921 A JP S5589921A
Authority
JP
Japan
Prior art keywords
recording
recorded part
signal
unit
envelope
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
JP16348878A
Other languages
English (en)
Inventor
Tomio Yoshida
Shiro Tsuji
Michiyoshi Nagashima
Shunji Harikae
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16348878A priority Critical patent/JPS5589921A/ja
Publication of JPS5589921A publication Critical patent/JPS5589921A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP16348878A 1978-12-28 1978-12-28 Optical recording and reproducing unit Pending JPS5589921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16348878A JPS5589921A (en) 1978-12-28 1978-12-28 Optical recording and reproducing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16348878A JPS5589921A (en) 1978-12-28 1978-12-28 Optical recording and reproducing unit

Publications (1)

Publication Number Publication Date
JPS5589921A true JPS5589921A (en) 1980-07-08

Family

ID=15774810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16348878A Pending JPS5589921A (en) 1978-12-28 1978-12-28 Optical recording and reproducing unit

Country Status (1)

Country Link
JP (1) JPS5589921A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819093A (en) * 1984-10-02 1989-04-04 Fuji Photo Film Co., Ltd. Rotary magnetic recording-reproducing apparatus with disc track checking
JPH01189071A (ja) * 1988-01-22 1989-07-28 Sharp Corp 情報記録再生装置
US4901301A (en) * 1987-06-18 1990-02-13 Pioneer Electronic Corporation Region detection system for detecting empty sectors on a recording medium
US4947280A (en) * 1984-10-02 1990-08-07 Fuji Photo Film Co., Ltd. Rotary magnetic reproducing apparatus with disc sensing logic
US5051849A (en) * 1985-11-28 1991-09-24 Canon Kabushiki Kaisha Recording apparatus including a pre-recording positioning function
US5144503A (en) * 1985-02-07 1992-09-01 Canon Kabushiki Kaisha Process for controlling an access position of a recording head which enables recording at each recording position on a recording medium without double recording and a device therefor
US5317549A (en) * 1991-04-30 1994-05-31 Sharp Kabushiki Kaisha Information recording and reproducing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53149301A (en) * 1977-06-01 1978-12-26 Matsushita Electric Ind Co Ltd Optical recorder-reproducer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53149301A (en) * 1977-06-01 1978-12-26 Matsushita Electric Ind Co Ltd Optical recorder-reproducer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4819093A (en) * 1984-10-02 1989-04-04 Fuji Photo Film Co., Ltd. Rotary magnetic recording-reproducing apparatus with disc track checking
US4947280A (en) * 1984-10-02 1990-08-07 Fuji Photo Film Co., Ltd. Rotary magnetic reproducing apparatus with disc sensing logic
US5144503A (en) * 1985-02-07 1992-09-01 Canon Kabushiki Kaisha Process for controlling an access position of a recording head which enables recording at each recording position on a recording medium without double recording and a device therefor
US5051849A (en) * 1985-11-28 1991-09-24 Canon Kabushiki Kaisha Recording apparatus including a pre-recording positioning function
US4901301A (en) * 1987-06-18 1990-02-13 Pioneer Electronic Corporation Region detection system for detecting empty sectors on a recording medium
JPH01189071A (ja) * 1988-01-22 1989-07-28 Sharp Corp 情報記録再生装置
US5317549A (en) * 1991-04-30 1994-05-31 Sharp Kabushiki Kaisha Information recording and reproducing apparatus

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