JPS6430071A - Reproducing circuit for digital optical disk - Google Patents
Reproducing circuit for digital optical diskInfo
- Publication number
- JPS6430071A JPS6430071A JP18547787A JP18547787A JPS6430071A JP S6430071 A JPS6430071 A JP S6430071A JP 18547787 A JP18547787 A JP 18547787A JP 18547787 A JP18547787 A JP 18547787A JP S6430071 A JPS6430071 A JP S6430071A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- preamplifier
- amplitude
- component
- 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
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To remove a dynamic range lack of a circuit by removing a DC component by differentiating an output signal from a preamplifier and then executing AGC control so that signal amplitude can be fixed. CONSTITUTION:An output signal (b) from the preamplifier 202 goes to a waveform having no DC component as shown in a signal (c) and the signal (c) is fixedly driven by signal amplitude exceeding reference potential levels VREF1, VREF3 by an AGC amplifier 204 and an AGC feedback circuit 205. Since the waveform with the fixed amplitude is inputted to the succeeding zerocross point detecting circuit 209 and differential amplitude detecting circuit 208, malfunction is not generated in these circuits. Since respective circuits other than the preamplifier can be designed without considering the DC component specific in the optical signal, the dynamic range arrangement of the circuit can be easily executed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18547787A JPS6430071A (en) | 1987-07-27 | 1987-07-27 | Reproducing circuit for digital optical disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18547787A JPS6430071A (en) | 1987-07-27 | 1987-07-27 | Reproducing circuit for digital optical disk |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6430071A true JPS6430071A (en) | 1989-01-31 |
Family
ID=16171449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18547787A Pending JPS6430071A (en) | 1987-07-27 | 1987-07-27 | Reproducing circuit for digital optical disk |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6430071A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03290876A (en) * | 1990-04-06 | 1991-12-20 | Sharp Corp | Information reproducing circuit |
JPH04283372A (en) * | 1991-03-11 | 1992-10-08 | Sanyo Electric Co Ltd | Operation control device of ice making machine |
WO2010143553A1 (en) | 2009-06-08 | 2010-12-16 | 日東化成株式会社 | Antifouling coating composition, antifouling coating film formed from the composition, coated object having the coating film on surface, and method of antifouling treatment by forming the coating film |
-
1987
- 1987-07-27 JP JP18547787A patent/JPS6430071A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03290876A (en) * | 1990-04-06 | 1991-12-20 | Sharp Corp | Information reproducing circuit |
JPH04283372A (en) * | 1991-03-11 | 1992-10-08 | Sanyo Electric Co Ltd | Operation control device of ice making machine |
WO2010143553A1 (en) | 2009-06-08 | 2010-12-16 | 日東化成株式会社 | Antifouling coating composition, antifouling coating film formed from the composition, coated object having the coating film on surface, and method of antifouling treatment by forming the coating film |
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