KR0151414B1 - 영상처리 시스템의 자동이득 조절회로 - Google Patents
영상처리 시스템의 자동이득 조절회로Info
- Publication number
- KR0151414B1 KR0151414B1 KR1019930031322A KR930031322A KR0151414B1 KR 0151414 B1 KR0151414 B1 KR 0151414B1 KR 1019930031322 A KR1019930031322 A KR 1019930031322A KR 930031322 A KR930031322 A KR 930031322A KR 0151414 B1 KR0151414 B1 KR 0151414B1
- Authority
- KR
- South Korea
- Prior art keywords
- gain control
- signal
- image
- control voltage
- output
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/4446—IF amplifier circuits specially adapted for B&W TV
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/52—Automatic gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
Description
Claims (4)
- 영상처리 시스템의 자동이득 조절회로에 있어서, 영상중간 주파신호를 입력하여 소정의 음성이득 제어전압에 의해 이득을 조절하여 출력하는 제1이득제어 증폭기(10)와, 음성중간 주파신호와 영상중간 주파신호가 포함된 캐리어신호를 입력하여 상기 소정의 음성이득 제어전압에 의해 증폭 출력하는 제2이득제어 증폭기(16)와, 상기 제2이득제어 증폭기(16)로부터 증폭 출력된 신호를 입력하여 음성이득 제어전압을 검출하여 출력하는 음성이득 제어전압 검출부(18)로 구성함을 특징으로 하는 자동이득 조절회로.
- 제1항에 있어서, 상기 제1이득제어 증폭기(10)로부터 과다증폭 영상신호가 출력될시 제1이득제어 증폭기(10)로부터 증폭 출력된 영상중간주파수신호로부터 이득제어 전압을 검출하여 출력하는 영상이득 제어전압 검출부(12)를 더 구비함을 특징으로 하는 자동이득 조절회로.
- 제2항에 있어서, 상기 제1이득제어 증폭기(10)는 과다 증폭 영상신호를 출력할 시 상기 영상이득 제어전압 검출부(12)로부터 출력된 이득 제어전압으로 이득 조절함을 특징으로 하는 자동이득 조절회로.
- 제2항에 있어서, 상기 제1이득제어 증폭기(10)로부터 출력된 신호를 입력하여 영상검파신호를 출력하는 영상검파부(14)와, 상기 제2이득제어 증폭기(16)로부터 출력된 신호를 입력하여 음성신호를 검파하여 출력하는 음성검파부(20)를 더 구비함을 특징으로 하는 자동이득 조절회로.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930031322A KR0151414B1 (ko) | 1993-12-30 | 1993-12-30 | 영상처리 시스템의 자동이득 조절회로 |
US08/366,905 US5633690A (en) | 1993-12-30 | 1994-12-30 | Automatic gain control circuit of a video processing system and method therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930031322A KR0151414B1 (ko) | 1993-12-30 | 1993-12-30 | 영상처리 시스템의 자동이득 조절회로 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR950022892A KR950022892A (ko) | 1995-07-28 |
KR0151414B1 true KR0151414B1 (ko) | 1998-10-15 |
Family
ID=19374303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930031322A Expired - Fee Related KR0151414B1 (ko) | 1993-12-30 | 1993-12-30 | 영상처리 시스템의 자동이득 조절회로 |
Country Status (2)
Country | Link |
---|---|
US (1) | US5633690A (ko) |
KR (1) | KR0151414B1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6169807B1 (en) | 1997-10-04 | 2001-01-02 | Michael Sansur | Remote automatic audio level control device |
US6523175B1 (en) | 1999-08-02 | 2003-02-18 | Nielsen Media Research, Inc. | Methods and apparatus for identifying the source of a user selected signal via an intermediate frequency probe |
US20050011239A1 (en) * | 2003-06-03 | 2005-01-20 | Lurie Alan E. | Convertible mortise/rim cylinder lock assembly with removable core |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1580649A (en) * | 1976-11-10 | 1980-12-03 | Sanyo Electric Co | Automatic fine tuning circuit in television receiver |
US4511924A (en) * | 1982-10-29 | 1985-04-16 | Rca Corporation | Frequency translation phase-locked loop for separate or intercarrier type television sound detection |
JPH0695741B2 (ja) * | 1988-07-27 | 1994-11-24 | 三菱電機株式会社 | 自動利得制御回路 |
US4974087A (en) * | 1989-04-13 | 1990-11-27 | Rca Licensing Corporation | Parallel sound if with reference carrier derived from quasi-synchronous video detector |
US5331290A (en) * | 1992-09-08 | 1994-07-19 | Samsung Electronics Co., Ltd. | Variable gain amplifier |
-
1993
- 1993-12-30 KR KR1019930031322A patent/KR0151414B1/ko not_active Expired - Fee Related
-
1994
- 1994-12-30 US US08/366,905 patent/US5633690A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR950022892A (ko) | 1995-07-28 |
US5633690A (en) | 1997-05-27 |
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Legal Events
Date | Code | Title | Description |
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PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19931230 |
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