JPS5479010A - Recording mode discriminator - Google Patents
Recording mode discriminatorInfo
- 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
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
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)
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52113705A (en) * | 1976-03-19 | 1977-09-24 | Ampex | Method and device for measuring tape speed |
-
1977
- 1977-12-06 JP JP52146989A patent/JPS5827894B2/en not_active Expired
Patent Citations (1)
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)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5671855A (en) | Playback device of disc | |
DE69115396D1 (en) | Circuit arrangement for demodulating an FM-modulated signal | |
JPS5479010A (en) | Recording mode discriminator | |
JPS53141009A (en) | Digital signal processor | |
JPS5580839A (en) | Sound starting device for tape recorder | |
JPS53124018A (en) | Signal detector circuit for video disc player | |
JPS5786159A (en) | Magnetic reproducing device | |
JPS573242A (en) | Reel motor driving circuit for high-speed playback | |
JPS55151876A (en) | Magnetic picture recorder/reproducer | |
JPS542018A (en) | Magnetic tape run driving system for magnetic recording and reproducing unit | |
JPS5769423A (en) | Rotation controller | |
JPS5387203A (en) | Stabilizing system for rotary mirror in optical information recorder/reproducer | |
JPS55113159A (en) | Capstan motor drive control system | |
JPS5514577A (en) | Recording adjustment unit of tape recorder | |
JPS5651039A (en) | Automatic changeover circuit of speed | |
JPS5661056A (en) | Magnetic recording and reproducing device | |
JPS5327082A (en) | Detector for rotating speed of motor | |
JPS535928A (en) | Recording and reproducing device of video signal | |
JPS5228305A (en) | Tune end detector of tape recorder | |
JPS5648774A (en) | High-speed reproduction system of vtr | |
JPS5376807A (en) | Reproducing apparatus | |
JPS5349910A (en) | Video signal process system using rotary recording medium | |
JPS5564642A (en) | Magnetic recording and reproducing device | |
JPS5658153A (en) | Control device of tape recorder | |
JPS5661055A (en) | Magnetic recording and reproducing device |