KR0120585B1 - 스탠더드/롱 플레이(sp/lp) 판별회로 - Google Patents
스탠더드/롱 플레이(sp/lp) 판별회로Info
- Publication number
- KR0120585B1 KR0120585B1 KR1019940018475A KR19940018475A KR0120585B1 KR 0120585 B1 KR0120585 B1 KR 0120585B1 KR 1019940018475 A KR1019940018475 A KR 1019940018475A KR 19940018475 A KR19940018475 A KR 19940018475A KR 0120585 B1 KR0120585 B1 KR 0120585B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- reference level
- envelope
- output signal
- gain control
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title claims abstract 3
- 239000003990 capacitor Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10018—Improvement or modification of read or write signals analog processing for digital recording or reproduction
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
- Circuits Of Receivers In General (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Description
Claims (2)
- 입력신호를 이득제어 증폭하기 위한 이득 제어 증폭수단; 상기 이득 제어 증폭수단의 출력신호의 포락선을 검출하기 위한 포락선 검출수단; 상기 포락선 검출수단의 출력신호를 이용하여 기준 레벨을 발생하기 위한 기준레벨 발생수단; 상기 포락선 검출수단의 출력수단의 출력신호와 상기 기준레벨을 비교하기 위한 비교수단; 상기 비교수단의 출력신호의 듀티비에 따라 SP모드인지 LP모드인지를 판별하기 위한 모드 판별수단을 구비한 것을 특징으로 하는 SP/LP 판별회로.
- 제1항에 있어서, 상기 기준레벨 발생수단은 상기 포락선 검출수단의 출력단자와 상기 비교수단의 네거티브 입력단자의 공통점과 접지 사이에 직렬 연결된 제1저항과 캐패시터; 상기 캐패시터와 병렬 연결된 제2저항을 구비하여 상기 캐패시터와 상기 제2저항의 공통점을 통하여 기준레벨을 발생하는 것을 특징으로 하는 SP/LP 판별회로.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940018475A KR0120585B1 (ko) | 1994-07-28 | 1994-07-28 | 스탠더드/롱 플레이(sp/lp) 판별회로 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940018475A KR0120585B1 (ko) | 1994-07-28 | 1994-07-28 | 스탠더드/롱 플레이(sp/lp) 판별회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960005549A KR960005549A (ko) | 1996-02-23 |
KR0120585B1 true KR0120585B1 (ko) | 1997-10-27 |
Family
ID=19389170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940018475A KR0120585B1 (ko) | 1994-07-28 | 1994-07-28 | 스탠더드/롱 플레이(sp/lp) 판별회로 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0120585B1 (ko) |
-
1994
- 1994-07-28 KR KR1019940018475A patent/KR0120585B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR960005549A (ko) | 1996-02-23 |
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