JPS5513562A - Remote control unit using acoustic wave as medium - Google Patents
Remote control unit using acoustic wave as mediumInfo
- Publication number
- JPS5513562A JPS5513562A JP8608178A JP8608178A JPS5513562A JP S5513562 A JPS5513562 A JP S5513562A JP 8608178 A JP8608178 A JP 8608178A JP 8608178 A JP8608178 A JP 8608178A JP S5513562 A JPS5513562 A JP S5513562A
- Authority
- JP
- Japan
- Prior art keywords
- output
- signals
- circuit
- remote control
- prescribed time
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/02—Non-electrical signal transmission systems, e.g. optical systems using infrasonic, sonic or ultrasonic waves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Selective Calling Equipment (AREA)
Abstract
PURPOSE:To use sound signals and electric circuits to perform the remote control by taking out signals near the upper limit of audio frequency signals and obtaining outputs continuously for a prescribed time and outputting only signals which continue over a set time. CONSTITUTION:The output of microphone 1 is amplified by 2, and signals, for example, below 5K Hz are cut off by filter 3. Transistor TrQ is non-conductive by the output, and the output is sent to AND circuit 28 continuously for a prescribed time from the leading edge of the output of circuit 2 through capacitor 35, trigger diode 36 and Tr8. Meanwhile, output signals of filter 3 are shaped by 27, and differentiating pulses are inputted to monostable circuit 29 at the leading edge of them, and a short output is given to circuit 28 at the trailing edge only when a set time is long. Then, the output of circuit 28 controls the conduction of load 14 through FF 37. As a result, this unit does not react to a strong impulsive sound but reacts well signals which continue for a prescribed time even if they are weak, so that electric circuits can be used to perform the remote control.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8608178A JPS5513562A (en) | 1978-07-17 | 1978-07-17 | Remote control unit using acoustic wave as medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8608178A JPS5513562A (en) | 1978-07-17 | 1978-07-17 | Remote control unit using acoustic wave as medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5513562A true JPS5513562A (en) | 1980-01-30 |
Family
ID=13876745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8608178A Pending JPS5513562A (en) | 1978-07-17 | 1978-07-17 | Remote control unit using acoustic wave as medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5513562A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6574592B1 (en) | 1999-03-19 | 2003-06-03 | Kabushiki Kaisha Toshiba | Voice detecting and voice control system |
-
1978
- 1978-07-17 JP JP8608178A patent/JPS5513562A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6574592B1 (en) | 1999-03-19 | 2003-06-03 | Kabushiki Kaisha Toshiba | Voice detecting and voice control system |
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