JPH0220896U - - Google Patents
Info
- Publication number
- JPH0220896U JPH0220896U JP9815688U JP9815688U JPH0220896U JP H0220896 U JPH0220896 U JP H0220896U JP 9815688 U JP9815688 U JP 9815688U JP 9815688 U JP9815688 U JP 9815688U JP H0220896 U JPH0220896 U JP H0220896U
- Authority
- JP
- Japan
- Prior art keywords
- strobe light
- light irradiation
- timing signal
- irradiation timing
- disk
- 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
- 230000001678 irradiating effect Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Selective Calling Equipment (AREA)
Description
第１図は本考案の実施例の回路を示すブロツク
線図、第２図はその動作説明に供するフローチヤ
ート、第３図は本考案を適用した携帯用デイスク
再生装置の斜視図、第４図は本考案を適用した据
え置き形デイスク再生装置の斜視図、第５図は本
考案を適用したラジオ・テープレコーダ付デイス
ク再生装置を示す斜視図、第６図は従来例の回路
を示すブロツク線図である。
１はデイスク、２はそのラベル面、３はその記
録面、４はストロボ放電管、５はその駆動回路、
６はスピンドルモータ、８は光反射部、９はＡＮ
Ｄゲート、１０はカウンタ、１１はコンパレータ
、１２，１３はカウンタ、１４はＡＮＤゲート、
１５は操作スイツチ、１９はフリツプフロツプ回
路である。
FIG. 1 is a block diagram showing a circuit of an embodiment of the present invention, FIG. 2 is a flowchart for explaining its operation, FIG. 3 is a perspective view of a portable disc playback device to which the present invention is applied, and FIG. 4 5 is a perspective view of a stationary disc playback device to which the present invention is applied, FIG. 5 is a perspective view of a disc playback device with a radio/tape recorder to which the present invention is applied, and FIG. 6 is a block diagram showing a conventional circuit. It is. 1 is a disk, 2 is its label surface, 3 is its recording surface, 4 is a strobe discharge tube, 5 is its drive circuit,
6 is a spindle motor, 8 is a light reflector, 9 is an AN
D gate, 10 is a counter, 11 is a comparator, 12 and 13 are counters, 14 is an AND gate,
15 is an operation switch, and 19 is a flip-flop circuit.
Claims (1)
回転に同期して、基準位置から回転角３６０°／
Ｍ（但し、Ｍ＝２，３，４……）毎に回転同期信
号を発生する回転同期信号発生手段と、 上記デイスクのデイスク面上にストロボ光を照
射するストロボ光照射手段と、 上記回転同期信号発生手段からの回転同期信号
に基づいて、上記デイスクの上記基準位置から回
転角３６０°×Ｎ／Ｍ（但し、Ｎ＝１，２，３…
…）の位置で発生するストロボ光照射タイミング
信号を形成するストロボ光照射タイミング信号形
成手段と、 該ストロボ光照射タイミング信号形成手段を制
御するストロボ光照射操作手段とを有し、 上記ストロボ光照射タイミング信号形成手段か
らのストロボ光照射タイミング信号に基づいて、
上記ストロボ光照射手段を制御するように成すと
共に、 上記ストロボ光照射操作手段の第１の操作状態
においては、上記ストロボ光照射タイミング信号
形成手段で形成されるストロボ光照射タイミング
信号の位相が変化し、 上記ストロボ光照射操作手段の第２の操作状態
においては、上記ストロボ光照射タイミング信号
形成手段で形成されるストロボ光照射タイミング
信号の位相が保持され、 上記ストロボ光照射操作手段の第３の操作状態
においては、上記ストロボ光照射タイミング信号
形成手段で形成されるストロボ光照射タイミング
信号による上記ストロボ光照射手段の制御を停止
するようにして成るデイスク面情報読み取り装置
。[Claims for Utility Model Registration] In synchronization with the rotation of the disk on which visual information is attached, the rotation angle is 360°/360° from the reference position.
A rotation synchronization signal generating means for generating a rotation synchronization signal every M (M = 2, 3, 4...), a strobe light irradiation means for irradiating a strobe light onto the disk surface of the disk, and the rotation synchronization Based on the rotation synchronization signal from the signal generating means, the rotation angle of the disk from the reference position is 360°×N/M (however, N=1, 2, 3...
...), a strobe light irradiation timing signal forming means for forming a strobe light irradiation timing signal generated at the position, and a strobe light irradiation operation means for controlling the strobe light irradiation timing signal forming means, the strobe light irradiation timing Based on the strobe light irradiation timing signal from the signal forming means,
The strobe light irradiation means is controlled, and in a first operation state of the strobe light irradiation operation means, the phase of the strobe light irradiation timing signal formed by the strobe light irradiation timing signal forming means is changed. In the second operating state of the strobe light irradiation operating means, the phase of the strobe light irradiation timing signal formed by the strobe light irradiation timing signal forming means is maintained, and in the third operation of the strobe light irradiation operating means In this state, the disk surface information reading device is configured to stop controlling the strobe light irradiation means based on the strobe light irradiation timing signal formed by the strobe light irradiation timing signal forming means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9815688U JPH0220896U (en) | 1988-07-25 | 1988-07-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9815688U JPH0220896U (en) | 1988-07-25 | 1988-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0220896U true JPH0220896U (en) | 1990-02-13 |
Family
ID=31324167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9815688U Pending JPH0220896U (en) | 1988-07-25 | 1988-07-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0220896U (en) |
-
1988
- 1988-07-25 JP JP9815688U patent/JPH0220896U/ja active Pending
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