JPS5479010A - Recording mode discriminator - Google Patents

Recording mode discriminator

Info

Publication number
JPS5479010A
JPS5479010A JP14698977A JP14698977A JPS5479010A JP S5479010 A JPS5479010 A JP S5479010A JP 14698977 A JP14698977 A JP 14698977A JP 14698977 A JP14698977 A JP 14698977A JP S5479010 A JPS5479010 A JP S5479010A
Authority
JP
Japan
Prior art keywords
frequency divider
output
frequency
trq
speed
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
JP14698977A
Other languages
Japanese (ja)
Other versions
JPS5827894B2 (en
Inventor
Takekatsu Morimoto
Kojiro Mikami
Susumu Ikeda
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 JP52146989A priority Critical patent/JPS5827894B2/en
Publication of JPS5479010A publication Critical patent/JPS5479010A/en
Publication of JPS5827894B2 publication Critical patent/JPS5827894B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To perform mode changing over stably with a simple constitution by comparing the output frequency of a speed detector for tape running driving motor and the reproduction frequency of reproduction control signal.
CONSTITUTION: The frequency of a speed detection head is 480 Hz in the case of a low speed mode and made to 240 Hz by a 1/2 frequency divider 32. The output 120 Hz of a frequency divider 47 is applied to the FFIC1 being a 1/2 frequency divider 47 and the collector or emitter of a transistor TrQ1 being a changeover switch. On the other hand, the output of the frequency divider 32 is applied to an IC2 being a 1/16 frequency divider 31 and the output having been reset by the control signal (IC2 a No.4 terminal) is converted to DC by an integrator 45. At this time, the base potential of TrQ2 has been set at 0.4V or under and therefore this becomes cut off and the (+) potential of the collector is applied to the base of TrQ1. The input signal 240 Hz from the frequency divider 32 is directly outputted to the output terminal to a speed multi 33. In this way, the mode may be changed over stably with the simple constitution.
COPYRIGHT: (C)1979,JPO&Japio
JP52146989A 1977-12-06 1977-12-06 Recording mode discrimination device Expired JPS5827894B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52146989A JPS5827894B2 (en) 1977-12-06 1977-12-06 Recording mode discrimination device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52146989A JPS5827894B2 (en) 1977-12-06 1977-12-06 Recording mode discrimination device

Publications (2)

Publication Number Publication Date
JPS5479010A true JPS5479010A (en) 1979-06-23
JPS5827894B2 JPS5827894B2 (en) 1983-06-13

Family

ID=15420090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52146989A Expired JPS5827894B2 (en) 1977-12-06 1977-12-06 Recording mode discrimination device

Country Status (1)

Country Link
JP (1) JPS5827894B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641852U (en) * 1979-08-30 1981-04-17
JPS56103955U (en) * 1979-12-28 1981-08-14
JPS5769559A (en) * 1980-10-15 1982-04-28 Matsushita Electric Ind Co Ltd Magnetic picture recording and reproducing device
JPS57102044U (en) * 1980-12-12 1982-06-23

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6059389U (en) * 1983-09-29 1985-04-25 日本電気ホームエレクトロニクス株式会社 Heating display device for induction cookers
JPS61165989A (en) * 1985-01-18 1986-07-26 松下電器産業株式会社 Heating cooker
JPH0419802Y2 (en) * 1985-09-18 1992-05-06

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113705A (en) * 1976-03-19 1977-09-24 Ampex Method and device for measuring tape speed

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113705A (en) * 1976-03-19 1977-09-24 Ampex Method and device for measuring tape speed

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641852U (en) * 1979-08-30 1981-04-17
JPH0115005Y2 (en) * 1979-08-30 1989-05-02
JPS56103955U (en) * 1979-12-28 1981-08-14
JPS5769559A (en) * 1980-10-15 1982-04-28 Matsushita Electric Ind Co Ltd Magnetic picture recording and reproducing device
JPS6356615B2 (en) * 1980-10-15 1988-11-08 Matsushita Electric Ind Co Ltd
JPS57102044U (en) * 1980-12-12 1982-06-23

Also Published As

Publication number Publication date
JPS5827894B2 (en) 1983-06-13

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