KR920004816Y1 - 펄스폭 변조를 이용한 음성 모우드 절환회로 - Google Patents
펄스폭 변조를 이용한 음성 모우드 절환회로 Download PDFInfo
- Publication number
- KR920004816Y1 KR920004816Y1 KR2019890009976U KR890009976U KR920004816Y1 KR 920004816 Y1 KR920004816 Y1 KR 920004816Y1 KR 2019890009976 U KR2019890009976 U KR 2019890009976U KR 890009976 U KR890009976 U KR 890009976U KR 920004816 Y1 KR920004816 Y1 KR 920004816Y1
- Authority
- KR
- South Korea
- Prior art keywords
- voice
- output
- mode switching
- pwm
- multiple mode
- 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
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
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/24—Systems for the transmission of television signals using pulse code modulation
- H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Electronic Switches (AREA)
Abstract
Description
Claims (2)
- 각기 다른 레벨을 갖는 음성다중 모우드 절환 전압 입력으로 음성다중 모우드를 절환시키는 음성다중 IC(IC2)가 구성된 음성다중 모우드 선택 회로에 있어서, 음성다중 모우드 선택 신호에 따라 각기 다른 듀티비를 갖는 PWM 펄스를 출력시키는 마이콤(IC1)과, 상기 마이콤(IC1)의 PWM펄스 출력을 반전시키는 반전부(5)와, 상기 반전부(5)에서 반전 출력된 PWM펄스를 DC 전압으로 변환시키후 음성다중 IC(IC2)에 음성다중 모우드 절환 전압으로 인가시키는 정류부(10)를 구성시킨 펄스 폭 변조를 이용한 음성 모우드 절환 회로.
- 제 1 항에 있어서, 반전부(5) 및 정류부(10)는 트랜지스터(Q1)의 베이스측에는 저항(R2)(R3)과 콘덴서(C1)를 통하여 PWM신호 발생부(3)의 PWM 펄스를 인가시킴과 동시에 저항(R1)을 통한 전원(B+)을 인가시키고 저항(R4)을 통하여 전원(B+)이 인가되는 트랜지스터(Q1)의 콜렉터측 출력은 병렬 연결된 다이오드(D1)와 저항(R5)으로 인가시키며 상기 다이오드(D1)의 저항(R5)의 출력은 콘덴서(C2)및 저항(R6)을 통하여 적분시킨후 음성다중 IC(IC2)에 음성다중 모우드 절환 전압으로 인가되도록 구성시킨 펄스폭 변조를 이용한 음성 모우드 절환 회로.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890009976U KR920004816Y1 (ko) | 1989-07-06 | 1989-07-06 | 펄스폭 변조를 이용한 음성 모우드 절환회로 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019890009976U KR920004816Y1 (ko) | 1989-07-06 | 1989-07-06 | 펄스폭 변조를 이용한 음성 모우드 절환회로 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR910003652U KR910003652U (ko) | 1991-02-27 |
| KR920004816Y1 true KR920004816Y1 (ko) | 1992-07-20 |
Family
ID=19288083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019890009976U Expired KR920004816Y1 (ko) | 1989-07-06 | 1989-07-06 | 펄스폭 변조를 이용한 음성 모우드 절환회로 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR920004816Y1 (ko) |
-
1989
- 1989-07-06 KR KR2019890009976U patent/KR920004816Y1/ko not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| KR910003652U (ko) | 1991-02-27 |
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