JPS60169764U - Reflectance change detection circuit - Google Patents
Reflectance change detection circuitInfo
- Publication number
- JPS60169764U JPS60169764U JP5537284U JP5537284U JPS60169764U JP S60169764 U JPS60169764 U JP S60169764U JP 5537284 U JP5537284 U JP 5537284U JP 5537284 U JP5537284 U JP 5537284U JP S60169764 U JPS60169764 U JP S60169764U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- change detection
- reflectance change
- logarithmic amplifier
- target object
- 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
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、従来のレコードの曲間検出回路を示す図、第
２図は、本考案の反射率変化検出回路の一実施例のブロ
ック回路図、第３図は、第２図に示すブロック回路図を
構成する対数増幅器の動作を説明する図、第４図は、対
数増幅器の一実施例を示す具体的回路図、第５図は、本
考案の反射率変化検出回路の一実施例の具体的回路図で
ある。
２：投光器、３：充電変換器、１０：ローパスフィルタ
、１１：対数増幅器、１２：バイパスフィルタ、１３：
増幅器。FIG. 1 is a diagram showing a conventional record track interval detection circuit, FIG. 2 is a block circuit diagram of an embodiment of the reflectance change detection circuit of the present invention, and FIG. 3 is a block diagram of the circuit shown in FIG. 2. 4 is a specific circuit diagram showing one embodiment of the logarithmic amplifier, and FIG. 5 is a diagram illustrating an embodiment of the reflectance change detection circuit of the present invention. It is a specific circuit diagram. 2: Floodlight, 3: Charging converter, 10: Low-pass filter, 11: Logarithmic amplifier, 12: Bypass filter, 13:
amplifier.
Claims (1)
受光する光電変換器と、この光電変換器に接続された対
数増幅器と、この対数増幅器に接続されたバイパスフィ
ルタとからなることを特徴、 とする反射率変化検出回
路。It is characterized by consisting of a light projector that illuminates a target object, a photoelectric converter that receives reflected light from the target object, a logarithmic amplifier connected to the photoelectric converter, and a bypass filter connected to the logarithmic amplifier. , a reflectance change detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5537284U JPS60169764U (en) | 1984-04-17 | 1984-04-17 | Reflectance change detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5537284U JPS60169764U (en) | 1984-04-17 | 1984-04-17 | Reflectance change detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60169764U true JPS60169764U (en) | 1985-11-11 |
| JPH0135286Y2 JPH0135286Y2 (en) | 1989-10-27 |
Family
ID=30577984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5537284U Granted JPS60169764U (en) | 1984-04-17 | 1984-04-17 | Reflectance change detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60169764U (en) |
-
1984
- 1984-04-17 JP JP5537284U patent/JPS60169764U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0135286Y2 (en) | 1989-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60169764U (en) | Reflectance change detection circuit | |
| JPS5933370U (en) | Binarization processing circuit | |
| JPS5810016U (en) | Photoelectric encoder failure detection circuit | |
| JPS5839773U (en) | Record disc track interval detection device | |
| JPS60164291U (en) | fire detector | |
| JPS5839774U (en) | Record disc track interval detection device | |
| JPS58162659U (en) | Laser diode light amount detection device | |
| JPS5834438U (en) | Waveform shaping circuit | |
| JPS5817568U (en) | Level meter device | |
| JPS5839776U (en) | Record disc track interval detection device | |
| JPS616771U (en) | Peak value detection circuit | |
| JPS5929555U (en) | Abnormal combustion detection device | |
| JPS58141609U (en) | Amplifier | |
| JPS5827735U (en) | photoelectric converter | |
| JPS5856344U (en) | Tape mark detection circuit | |
| JPS6115584U (en) | Light beam automatic alarm | |
| JPS58125843U (en) | photodetector | |
| JPS60143306U (en) | Light reflective distance sensor | |
| JPS603958U (en) | Record player cue standby | |
| JPS5850556U (en) | Binarization circuit | |
| JPS58174795U (en) | photoelectric smoke detector | |
| JPS59109973U (en) | optical radar device | |
| JPS60192104U (en) | tape recorder | |
| JPS58174288U (en) | shoot | |
| JPS60120468U (en) | pitch comparison device |