JPS58118570U - Rotating recording medium rotation speed control circuit - Google Patents
Rotating recording medium rotation speed control circuitInfo
- Publication number
- JPS58118570U JPS58118570U JP1982013230U JP1323082U JPS58118570U JP S58118570 U JPS58118570 U JP S58118570U JP 1982013230 U JP1982013230 U JP 1982013230U JP 1323082 U JP1323082 U JP 1323082U JP S58118570 U JPS58118570 U JP S58118570U
- Authority
- JP
- Japan
- Prior art keywords
- reversal
- rotational speed
- recording medium
- detection section
- control circuit
- 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
Landscapes
- Rotational Drive Of Disk (AREA)
- Control Of Velocity Or Acceleration (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例を示すブロック図、第２図は
本考案の具体的な構成の一例を示すブロック図、第３図
ａ−ｊは第２図に示すブロック図の動作を説明する波形
図である。
１・・・反転検出部、２・・・時間検出部、３・・・判
定部。Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a block diagram showing an example of a specific configuration of the present invention, and Figs. 3 a-j show the operation of the block diagram shown in Fig. 2. FIG. 3 is a waveform diagram for explanation. 1... Reversal detection section, 2... Time detection section, 3... Judgment section.
Claims (1)
デジタルデータを線速度一定のフォーマットでら線状に
記−した回転記録媒体の回転速度を制御するものにおい
て、回転記録媒体から検出した信号の内容が反転するタ
イミングを検出する反転検出部と、この反転検出部の検
出信号を与えられ反転区間の時間を計測する時間検出部
と、この時間検出部の検出信号を与えられ検出値に最大
反転間隔を越えるものがあれば回転速度が過小と判定し
て増速させ最小反転間隔に達しないものがあれば回転速
度が過大と判定して減速させる判定部とを具備する回転
記録媒体の回転速度制御回路。In a device that controls the rotational speed of a rotating recording medium in which digital data having a preset maximum reversal interval and a minimum reversal interval are linearly recorded in a format with a constant linear velocity, the content of the signal detected from the rotary recording medium is A reversal detection section detects the timing of reversal, a time detection section receives the detection signal of this reversal detection section and measures the time of the reversal section, and a time detection section receives the detection signal of this time detection section and sets the maximum reversal interval to the detected value. A rotational speed control circuit for a rotating recording medium, comprising: a determination unit that determines that the rotational speed is too low if the minimum reversal interval is exceeded and increases the rotational speed; and a determination unit that determines that the rotational speed is excessive and decelerates the rotational speed if the minimum reversal interval is not reached. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982013230U JPS58118570U (en) | 1982-02-02 | 1982-02-02 | Rotating recording medium rotation speed control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982013230U JPS58118570U (en) | 1982-02-02 | 1982-02-02 | Rotating recording medium rotation speed control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58118570U true JPS58118570U (en) | 1983-08-12 |
| JPS6331249Y2 JPS6331249Y2 (en) | 1988-08-22 |
Family
ID=30025754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982013230U Granted JPS58118570U (en) | 1982-02-02 | 1982-02-02 | Rotating recording medium rotation speed control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58118570U (en) |
-
1982
- 1982-02-02 JP JP1982013230U patent/JPS58118570U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6331249Y2 (en) | 1988-08-22 |
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