JPS5466810A - Recording and reproducing method of pilot signals - Google Patents

Recording and reproducing method of pilot signals

Info

Publication number
JPS5466810A
JPS5466810A JP13442477A JP13442477A JPS5466810A JP S5466810 A JPS5466810 A JP S5466810A JP 13442477 A JP13442477 A JP 13442477A JP 13442477 A JP13442477 A JP 13442477A JP S5466810 A JPS5466810 A JP S5466810A
Authority
JP
Japan
Prior art keywords
thru
pilot signals
frequencies
heads
autotracking
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.)
Granted
Application number
JP13442477A
Other languages
Japanese (ja)
Other versions
JPS5855573B2 (en
Inventor
Takenobu Isaka
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 JP52134424A priority Critical patent/JPS5855573B2/en
Publication of JPS5466810A publication Critical patent/JPS5466810A/en
Publication of JPS5855573B2 publication Critical patent/JPS5855573B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE: To perform sure autotracking at the reproducing with a VTR, etc. by recording pilot signals of frequencies wherein differential frequencies assume specified relations at every adjoining track.
CONSTITUTION: Switches 25 thru 28 on the output side of oscillators 21 thru 24 which generate pilot signals of frequencies f1 thru f4 are sequentially cyclically changed over by way of a ring counter 14 formed by FFs 15 thru 18, etc. in synchronization with the pulses by the magnet piece 8 and magnetic head 9 provided to the shaft of a motor 4 for revolving rotary heads 2a, 2b of the VTR, etc. This causes the pilot signals in which frequencies satisfy the conditions of f1-f2=f3-f4≠ f3-f2=f1-f4 to be recorded at every adjoining track of the magnetic tape by the heads 2a, 2b via rotary transformer 30. When this tape is reproduced and is processed with a band-pass filter of frequency bands f1-f2, f3-f2, the easy and sure autotracking in which the track deviation directions of the heads 2a, 2b have been immediately judged via the band-pass filter may be performed.
COPYRIGHT: (C)1979,JPO&Japio
JP52134424A 1977-11-08 1977-11-08 Tracking signal detection device Expired JPS5855573B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52134424A JPS5855573B2 (en) 1977-11-08 1977-11-08 Tracking signal detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52134424A JPS5855573B2 (en) 1977-11-08 1977-11-08 Tracking signal detection device

Publications (2)

Publication Number Publication Date
JPS5466810A true JPS5466810A (en) 1979-05-29
JPS5855573B2 JPS5855573B2 (en) 1983-12-10

Family

ID=15128051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52134424A Expired JPS5855573B2 (en) 1977-11-08 1977-11-08 Tracking signal detection device

Country Status (1)

Country Link
JP (1) JPS5855573B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158025A (en) * 1982-03-15 1983-09-20 Victor Co Of Japan Ltd Pilot signal recorder
EP0089816A2 (en) * 1982-03-18 1983-09-28 Sony Corporation Apparatus for controlling the tracking position of a head in an apparatus for recording or reproducing information
EP0094194A2 (en) * 1982-05-07 1983-11-16 Matsushita Electric Industrial Co., Ltd. Magnetic recording and reproduction system
JPS5948804A (en) * 1982-09-10 1984-03-21 Hitachi Ltd Recording circuit of video tape recorder
US4581658A (en) * 1982-06-04 1986-04-08 Hitachi, Ltd. Variable speed picture reproducing apparatus for video tape recorder
JPS61142894A (en) * 1985-10-18 1986-06-30 Hitachi Ltd Chrominance signal recording and reproducing circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042829A (en) * 1973-08-20 1975-04-18
JPS51138413A (en) * 1975-05-26 1976-11-30 Nippon Hoso Kyokai <Nhk> Magnetic sheet recorder/reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042829A (en) * 1973-08-20 1975-04-18
JPS51138413A (en) * 1975-05-26 1976-11-30 Nippon Hoso Kyokai <Nhk> Magnetic sheet recorder/reproducer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58158025A (en) * 1982-03-15 1983-09-20 Victor Co Of Japan Ltd Pilot signal recorder
JPH0132568B2 (en) * 1982-03-15 1989-07-06 Victor Company Of Japan
EP0089816A2 (en) * 1982-03-18 1983-09-28 Sony Corporation Apparatus for controlling the tracking position of a head in an apparatus for recording or reproducing information
EP0094194A2 (en) * 1982-05-07 1983-11-16 Matsushita Electric Industrial Co., Ltd. Magnetic recording and reproduction system
US4581658A (en) * 1982-06-04 1986-04-08 Hitachi, Ltd. Variable speed picture reproducing apparatus for video tape recorder
JPS5948804A (en) * 1982-09-10 1984-03-21 Hitachi Ltd Recording circuit of video tape recorder
JPH0424778B2 (en) * 1982-09-10 1992-04-28 Hitachi Ltd
JPS61142894A (en) * 1985-10-18 1986-06-30 Hitachi Ltd Chrominance signal recording and reproducing circuit
JPH0123993B2 (en) * 1985-10-18 1989-05-09 Hitachi Ltd

Also Published As

Publication number Publication date
JPS5855573B2 (en) 1983-12-10

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