JPS61114536U - - Google Patents
Info
- Publication number
- JPS61114536U JPS61114536U JP20069284U JP20069284U JPS61114536U JP S61114536 U JPS61114536 U JP S61114536U JP 20069284 U JP20069284 U JP 20069284U JP 20069284 U JP20069284 U JP 20069284U JP S61114536 U JPS61114536 U JP S61114536U
- Authority
- JP
- Japan
- Prior art keywords
- speed
- sec
- tape
- capstan
- frequency
- 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 1
Description
図は本考案の一実施例を示すブロツク線図であ
る。
１はキヤプスタン、２は周波数発電機、５はキ
ヤプスタンモータ、６は周波数サーボループ、７
は位相サーボループ、８は周波数−電圧変換器、
９は可変分周器、１０は位相比較器である。
The figure is a block diagram showing one embodiment of the present invention. 1 is a capstan, 2 is a frequency generator, 5 is a capstan motor, 6 is a frequency servo loop, 7
is a phase servo loop, 8 is a frequency-voltage converter,
9 is a variable frequency divider, and 10 is a phase comparator.
Claims (1)
ｅｃ、３３．３５mm／ｓｅｃで、テープ送り速度
を夫々標準速度の１／２，１／３をも可能にした
第１及び第２の方式のテープカセツトを再生し得
るＶＴＲのキヤプスタサーボ回路に於いて、上記
キヤプスタンに直結され、テープ送り速度が夫々
４０．００mm／ｓｅｃ、３３．３５mm／ｓｅｃの
とき夫々周波数が５４０ｎ（Ｈｚ）、４５０ｎ（
Ｈｚ）（但し、ｎ＝１，２，３，…）の周波数信
号を発生する周波数発電機と、該周波数発電機よ
りの周波数信号を１／Ｎに分周する可変分周器と
、該可変分周器よりの分周された周波数信号を３
０Ｈｚの基準信号と位相比較する位相比較回路と
を有し、該位相比較回路よりの比較出力と、テー
プ送り速度に応じた回転数制御信号とを加算して
キヤプスタンモータに供給するようにして成るＶ
ＴＲのキヤプスタンサーボ回路。 Standard tape feed speed is 40.00mm/s.
ec, 33.35 mm/sec, in the capster servo circuit of a VTR capable of reproducing tape cassettes of the first and second systems, which enable the tape feed speed to be 1/2 and 1/3 of the standard speed, respectively. , are directly connected to the above capstan, and when the tape feeding speed is 40.00 mm/sec and 33.35 mm/sec, respectively, the frequencies are 540 n (Hz) and 450 n (
Hz) (however, n=1, 2, 3,...); a variable frequency divider that divides the frequency signal from the frequency generator into 1/N; The divided frequency signal from the frequency divider is
It has a phase comparator circuit that compares the phase with a reference signal of 0 Hz, and the comparison output from the phase comparator circuit and the rotation speed control signal according to the tape feeding speed are added and supplied to the capstan motor. V consisting of
TR capstan servo circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20069284U JPS61114536U (en) | 1984-12-27 | 1984-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20069284U JPS61114536U (en) | 1984-12-27 | 1984-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61114536U true JPS61114536U (en) | 1986-07-19 |
Family
ID=30761780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20069284U Pending JPS61114536U (en) | 1984-12-27 | 1984-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61114536U (en) |
-
1984
- 1984-12-27 JP JP20069284U patent/JPS61114536U/ja active Pending
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