JPS57130209A - Video recorder - Google Patents

Video recorder

Info

Publication number
JPS57130209A
JPS57130209A JP56015072A JP1507281A JPS57130209A JP S57130209 A JPS57130209 A JP S57130209A JP 56015072 A JP56015072 A JP 56015072A JP 1507281 A JP1507281 A JP 1507281A JP S57130209 A JPS57130209 A JP S57130209A
Authority
JP
Japan
Prior art keywords
signal
main memory
displayed
bit
memory
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
JP56015072A
Other languages
Japanese (ja)
Inventor
Kenichi Kobayashi
Takaya Matsuse
Susumu Katayama
Toshiichi Yamada
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.)
KOUDEN SEISAKUSHO KK
Koden Electronics Co Ltd
Original Assignee
KOUDEN SEISAKUSHO KK
Koden Electronics 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 KOUDEN SEISAKUSHO KK, Koden Electronics Co Ltd filed Critical KOUDEN SEISAKUSHO KK
Priority to JP56015072A priority Critical patent/JPS57130209A/en
Publication of JPS57130209A publication Critical patent/JPS57130209A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/027—Analogue recording

Abstract

PURPOSE:To improve reproduction efficiency while reducing the cost for record storage, by recording displayed information for one screen, searched for by taking a long time, on an audio magnetic tape in a short time. CONSTITUTION:One-screen information displayed on a cathode-ray tube display device is transferred as[N]-bit information from a main memory 3 and a subordinate memory 6 on time-division basis, and an[N]-bit signal of each picture element is recorded, including a synchronizing signal for scanning, on a tape after successive conversion to a frequency in an audio range. Amplification and waveform shaping are carried out by a reproduced-signal amplifying circuit 27 and a waveform shaping circuit 28 and then the frequency of each wave is measured to perform reconversion to the[N]-bit signal. The signal is written in a reproducing subordinate memory 37 by every synchronizing signal separated during reproduction and during the subscanning halt period of the main memory 3, a signal by every scan is written in the main memory 3 and read repeatedly at a high speed to be displayed on the cathode-ray tube display device.
JP56015072A 1981-02-05 1981-02-05 Video recorder Pending JPS57130209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56015072A JPS57130209A (en) 1981-02-05 1981-02-05 Video recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56015072A JPS57130209A (en) 1981-02-05 1981-02-05 Video recorder

Publications (1)

Publication Number Publication Date
JPS57130209A true JPS57130209A (en) 1982-08-12

Family

ID=11878642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56015072A Pending JPS57130209A (en) 1981-02-05 1981-02-05 Video recorder

Country Status (1)

Country Link
JP (1) JPS57130209A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61292080A (en) * 1985-06-19 1986-12-22 Furuno Electric Co Ltd Sonar image recording device
JPS6369064A (en) * 1986-09-11 1988-03-29 Mitsubishi Heavy Ind Ltd Recording and reproducing method for radar echo signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532921B2 (en) * 1972-07-19 1978-02-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532921B2 (en) * 1972-07-19 1978-02-01

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61292080A (en) * 1985-06-19 1986-12-22 Furuno Electric Co Ltd Sonar image recording device
JPH0347712B2 (en) * 1985-06-19 1991-07-22 Furuno Electric Co
JPS6369064A (en) * 1986-09-11 1988-03-29 Mitsubishi Heavy Ind Ltd Recording and reproducing method for radar echo signal

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