JPS62147974U - - Google Patents
Info
- Publication number
- JPS62147974U JPS62147974U JP1987000045U JP4587U JPS62147974U JP S62147974 U JPS62147974 U JP S62147974U JP 1987000045 U JP1987000045 U JP 1987000045U JP 4587 U JP4587 U JP 4587U JP S62147974 U JPS62147974 U JP S62147974U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric element
- terminal
- output side
- element driver
- output
- 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
Links
- 238000010586 diagram Methods 0.000 description 9
- 238000001308 synthesis method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
- G11B15/473—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Description
第1図は本考案による無騒音サーチ軌跡図及び
波形図、第2図は本考案の無騒音スキツプサーチ
装置のブロツク図、第3図は第1図の倍速による
目標電圧波形図、第4図は第3図の出力波形図、
第5図は従来の高速再生時トラツクに対する再生
ヘツドの軌跡図及び波形図、第6図は高周波エン
ベロプ(RF ENVELOPE)合成法に依る
従来の無騒音サーチ軌跡図及び波形図である。
(符号の説明)、1:1/N分周器、2:カウ
ンター、3:ラツチ回路、4:プリセツトカウン
ター、5:減算器、6,8:デイジタル/アナロ
グ変換器、7:線形直流増幅器、9:基準電圧発
生器、10:圧電素子ドライバー、11:圧電素
子。
Figure 1 is a noiseless search locus and waveform diagram according to the present invention, Figure 2 is a block diagram of the noiseless skip search device according to the present invention, Figure 3 is a target voltage waveform diagram at double the speed of Figure 1, and Figure 4 is a diagram of the target voltage waveform at double the speed of Figure 1. Output waveform diagram in Figure 3,
FIG. 5 is a trajectory diagram and waveform diagram of the reproducing head for a conventional high-speed reproduction track, and FIG. 6 is a conventional noiseless search trajectory diagram and waveform diagram based on a high frequency envelope (RF ENVELOPE) synthesis method. (Explanation of symbols), 1: 1/N frequency divider, 2: counter, 3: latch circuit, 4: preset counter, 5: subtracter, 6, 8: digital/analog converter, 7: linear DC amplifier , 9: Reference voltage generator, 10: Piezoelectric element driver, 11: Piezoelectric element.
Claims (1)
トされ、1N分周器1の分周信号をカウントする
カウンター2の出力側をラツチ回路3を通じて減
算器5の比較入力端子に接続し、モード選択信号
MSにより一定データ信号を出力するプリセツト
カウンター4の出力側を前記減算器5の基準入力
端子に接続すると共に、デイジタル/アナログ変
換器8及び基準電圧発生器9を通じて再生ボタン
信号PBによりイネーブルされ、ヘツドスイツチ
ングパルス信号HSによりリセツトされる圧電素
子ドライバー10の基準電圧端子に接続し、前記
減算器5の出力側をデイジタル/アナログ変換器
6及び線形直流増幅器7を通じて圧電素子ドライ
バー10の比較電圧端子に接続し且つ、減算器5
のサインビツト出力端子を圧電素子ドライバー1
0の正/逆選択端子に接続させて構成したことを
特徴とする圧電素子を利用した無騒音スキツプサ
ーチ装置。 The output side of a counter 2 which is reset by the capstan pulse signal CFG and counts the frequency divided signal of the 1N frequency divider 1 is connected to the comparison input terminal of the subtracter 5 through the latch circuit 3, and a constant data signal is output by the mode selection signal MS. The output side of the preset counter 4, which outputs connected to the reference voltage terminal of the piezoelectric element driver 10 which is reset by HS, the output side of the subtracter 5 is connected to the comparison voltage terminal of the piezoelectric element driver 10 through the digital/analog converter 6 and the linear DC amplifier 7; Subtractor 5
Connect the sine bit output terminal of piezoelectric element driver 1 to
1. A noiseless skip search device using a piezoelectric element, characterized in that it is connected to a positive/reverse selection terminal of 0.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019850018422U KR890004236Y1 (en) | 1985-12-31 | 1985-12-31 | Non-noise skip search apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62147974U true JPS62147974U (en) | 1987-09-18 |
Family
ID=19247845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987000045U Pending JPS62147974U (en) | 1985-12-31 | 1987-01-05 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS62147974U (en) |
KR (1) | KR890004236Y1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5453817A (en) * | 1977-10-06 | 1979-04-27 | Sony Corp | Reproducing device of video signal |
JPS54137222A (en) * | 1978-04-18 | 1979-10-24 | Sony Corp | Displacement control system for magnetic converter head |
JPS5539480A (en) * | 1978-09-14 | 1980-03-19 | Sony Corp | Video signal regenerator |
JPS5624887A (en) * | 1979-08-08 | 1981-03-10 | Matsushita Electric Ind Co Ltd | Video tape recorder |
JPS56127924A (en) * | 1980-03-13 | 1981-10-07 | Sony Corp | Tape speed detecting circuit |
-
1985
- 1985-12-31 KR KR2019850018422U patent/KR890004236Y1/en not_active IP Right Cessation
-
1987
- 1987-01-05 JP JP1987000045U patent/JPS62147974U/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5453817A (en) * | 1977-10-06 | 1979-04-27 | Sony Corp | Reproducing device of video signal |
JPS54137222A (en) * | 1978-04-18 | 1979-10-24 | Sony Corp | Displacement control system for magnetic converter head |
JPS5539480A (en) * | 1978-09-14 | 1980-03-19 | Sony Corp | Video signal regenerator |
JPS5624887A (en) * | 1979-08-08 | 1981-03-10 | Matsushita Electric Ind Co Ltd | Video tape recorder |
JPS56127924A (en) * | 1980-03-13 | 1981-10-07 | Sony Corp | Tape speed detecting circuit |
Also Published As
Publication number | Publication date |
---|---|
KR890004236Y1 (en) | 1989-06-26 |
KR870011162U (en) | 1987-07-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS62147974U (en) | ||
JPS60116634U (en) | Magnetic tape running speed control circuit | |
JPS6211264U (en) | ||
JPS59118111U (en) | tape recorder | |
JPS60135840U (en) | Tape speed control device | |
JPS582741U (en) | recording device | |
JPS6137107U (en) | PCM area data switching device using DTF servo | |
JPS6116701U (en) | Sequential disk write current variable circuit | |
JPS6245731U (en) | ||
JPS60159509U (en) | Crosstalk prevention circuit | |
JPS6285904U (en) | ||
JPS60132636U (en) | intermittent drive circuit | |
JPH032441U (en) | ||
JPS6276071A (en) | Position signal generating device for magnetic recording and reproducing device | |
JPS5877810U (en) | tape recorder | |
JPS60166842U (en) | capstan servo circuit | |
JPS60194759U (en) | magnetic recording and reproducing device | |
JPS59169599U (en) | Voice coil motor drive circuit | |
JPS6456030U (en) | ||
JPS6285909U (en) | ||
JPS6072071U (en) | video tape recorder | |
JPS60169702U (en) | Audio noise removal circuit in VTR | |
JPS61193569U (en) | ||
JPS5830953U (en) | tracking circuit | |
JPH01133241U (en) |