JPS56111162A - Automatic inter-music detector for record player - Google Patents
Automatic inter-music detector for record playerInfo
- Publication number
- JPS56111162A JPS56111162A JP1523480A JP1523480A JPS56111162A JP S56111162 A JPS56111162 A JP S56111162A JP 1523480 A JP1523480 A JP 1523480A JP 1523480 A JP1523480 A JP 1523480A JP S56111162 A JPS56111162 A JP S56111162A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- inter
- optical sensor
- music
- 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
Abstract
PURPOSE: To enable to ensure automatic detection of inter-music at all times, by making floating the threshold level of inter-music detection pulse, through the passing of a reflected output from an optical sensor and another reflection output from the optical sensor through an integration circuit.
CONSTITUTION: A light emitter 1 of an optical sensor 3 is driven with the pulse output from a pulse generating circuit 6, the reflected light from the record disc surface is received at a photodetector 2, the reflected light output is fed to an amplifier circuit 7 and the peak value is held at a peak hold circuit 9 through a band- pass filter 8. Next, the output of the circuit 9 is compared with an output through an integration circuit 16 and a level adjusting circuit 17 at a comparator 18, allowing to reduce the effect of surrounding light through floated threshold level, and also sure automatic inter-music detection pulse which can compensate the difference of reflection factor of record discs, is obtained from the comparator 18.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1523480A JPS56111162A (en) | 1980-02-08 | 1980-02-08 | Automatic inter-music detector for record player |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1523480A JPS56111162A (en) | 1980-02-08 | 1980-02-08 | Automatic inter-music detector for record player |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56111162A true JPS56111162A (en) | 1981-09-02 |
Family
ID=11883169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1523480A Pending JPS56111162A (en) | 1980-02-08 | 1980-02-08 | Automatic inter-music detector for record player |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56111162A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52141606A (en) * | 1976-04-30 | 1977-11-26 | Marvin Glass & Associates | Programmable record player |
JPS5320302A (en) * | 1976-08-09 | 1978-02-24 | Ozan Jiyunia Robaato | Sound track selecting system for record player |
-
1980
- 1980-02-08 JP JP1523480A patent/JPS56111162A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52141606A (en) * | 1976-04-30 | 1977-11-26 | Marvin Glass & Associates | Programmable record player |
JPS5320302A (en) * | 1976-08-09 | 1978-02-24 | Ozan Jiyunia Robaato | Sound track selecting system for record player |
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