JPH0260925U - - Google Patents
Info
- Publication number
- JPH0260925U JPH0260925U JP13959788U JP13959788U JPH0260925U JP H0260925 U JPH0260925 U JP H0260925U JP 13959788 U JP13959788 U JP 13959788U JP 13959788 U JP13959788 U JP 13959788U JP H0260925 U JPH0260925 U JP H0260925U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- detection device
- light emitter
- tape
- lighting
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案の一実施例の回路構成図、第
２図は第１図の実施例の各信号のタイムチヤート
、第３図はこの考案の他の実施例の回路構成図、
第４図は従来のテープ始終端検出装置における点
灯回路の一例の構成図である。
１……ＬＥＤ、２……定電流回路、３……ドラ
イバー、４，５……電流比較器、６……論理ゲー
ト、７……Ｄフリツプフロツプ、８……論理回路
、１１……点灯回路、１２……検出回路、Ｓ１〜
Ｓ４……信号。
FIG. 1 is a circuit configuration diagram of one embodiment of this invention, FIG. 2 is a time chart of each signal in the embodiment of FIG. 1, and FIG. 3 is a circuit diagram of another embodiment of this invention.
FIG. 4 is a configuration diagram of an example of a lighting circuit in a conventional tape start/end detection device. 1...LED, 2...constant current circuit, 3...driver, 4, 5...current comparator, 6...logic gate, 7...D flip-flop, 8...logic circuit, 11...lighting circuit, 12...Detection circuit, S1 ~
S4 ...Signal.
Claims (1)
り光学的にテープの始終端を判別するテープ始終
端検出装置において、上記点灯回路に発光体の点
灯状態を検出するための検出回路を付加したこと
を特徴とするテープ始終端検出装置。 In a tape start/end detection device that includes a lighting circuit for a light emitter and optically determines the beginning and end of a tape based on a difference in light transmittance, a detection circuit for detecting the lighting state of the light emitter is added to the lighting circuit. A tape start/end end detection device characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13959788U JPH0260925U (en) | 1988-10-26 | 1988-10-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13959788U JPH0260925U (en) | 1988-10-26 | 1988-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0260925U true JPH0260925U (en) | 1990-05-07 |
Family
ID=31403003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13959788U Pending JPH0260925U (en) | 1988-10-26 | 1988-10-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0260925U (en) |
-
1988
- 1988-10-26 JP JP13959788U patent/JPH0260925U/ja active Pending
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