JPS5613879A - Motor control device - Google Patents

Motor control device

Info

Publication number
JPS5613879A
JPS5613879A JP8876179A JP8876179A JPS5613879A JP S5613879 A JPS5613879 A JP S5613879A JP 8876179 A JP8876179 A JP 8876179A JP 8876179 A JP8876179 A JP 8876179A JP S5613879 A JPS5613879 A JP S5613879A
Authority
JP
Japan
Prior art keywords
tape
speed
motor
signal
control
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
JP8876179A
Other languages
Japanese (ja)
Inventor
Satoshi Yamato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8876179A priority Critical patent/JPS5613879A/en
Publication of JPS5613879A publication Critical patent/JPS5613879A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/783—Adaptations for reproducing at a rate different from the recording rate

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To obtain a high-quality picture signal for the motor control device of the VTR, by stabilizing the horizontal synchronous signal of the reproduced signal although the tape transportation speed is varied when the reproducing is carried out. CONSTITUTION:In the case of the fast forward mode of the special reproduction, the 1st and 2nd switch circuits 22 and 27 are switched toward inputs PO and P1 respectively. Thus the control is given to the rotation of rotary head motor 25 by the reference signal which is obtained by giving detection 36 to the speed of tape 33. And in the case of the reverse sending of the tape, circuit 27 is switched toward input P3. And the control is given to the rotation of motor 25 via one step of amplifier 37 and by shifting the center point of the output frequency of voltage control oscillator 32 toward the side lower than the ordinary oscillation frequency of reference signal generator 30. As a result, the special reproduction is possible with the steady horizontal synchronous signal frequency although the tape speed may differ at the biginning and the end of winding.
JP8876179A 1979-07-13 1979-07-13 Motor control device Pending JPS5613879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8876179A JPS5613879A (en) 1979-07-13 1979-07-13 Motor control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8876179A JPS5613879A (en) 1979-07-13 1979-07-13 Motor control device

Publications (1)

Publication Number Publication Date
JPS5613879A true JPS5613879A (en) 1981-02-10

Family

ID=13951853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8876179A Pending JPS5613879A (en) 1979-07-13 1979-07-13 Motor control device

Country Status (1)

Country Link
JP (1) JPS5613879A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61128391A (en) * 1984-11-28 1986-06-16 Matsushita Electric Ind Co Ltd Pattern matching device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61128391A (en) * 1984-11-28 1986-06-16 Matsushita Electric Ind Co Ltd Pattern matching device

Similar Documents

Publication Publication Date Title
ATE60180T1 (en) DIGITAL VIDEO RECORDER.
US4276571A (en) Slow or still mode video signal reproducing apparatus with incremented tape movement
JPS5613879A (en) Motor control device
JPS5619291A (en) Chroma level control circuit
JPS55147892A (en) Color signal processing unit
JPS5562551A (en) Tape recorder
JPS5635589A (en) Color signal recording/reproducing circuit
JPS5538719A (en) Vtr
JPS5730473A (en) Variable-speed reproducing device of magnetic reproducing device
JPS5674882A (en) Recording device for vehicle
JPS5694888A (en) Phase servo circuit
JPS5671842A (en) Magnetic recording and playback device
JPS644190A (en) Chrominance signal processor for magnetic recording and reproducing device
JPH0115008Y2 (en)
JPS5655A (en) Control unit for rotating speed
JPS55151876A (en) Magnetic picture recorder/reproducer
KR910008977Y1 (en) Fm stereo recording circuit for 8mm vtr
JPS5741085A (en) Signal processing equipment of video tape recorder
JPS55162893A (en) Revolution speed controller
JPS5562511A (en) Bias oscillator circuit of tape recorder
FR2368191A3 (en) EDITING FOR THE REPRODUCTION OF STILL IMAGES USING OBLIQUE TRACK VIDEO DEVICES
JPS56168479A (en) Magnetic picture recorder and reproducer
JPS5744247A (en) Continuous reproducing method using two reproducers
JPS56123178A (en) Correcting device for synchronizing signal frequency
JPH0431404U (en)