JPS6273684U - - Google Patents
Info
- Publication number
- JPS6273684U JPS6273684U JP1985164941U JP16494185U JPS6273684U JP S6273684 U JPS6273684 U JP S6273684U JP 1985164941 U JP1985164941 U JP 1985164941U JP 16494185 U JP16494185 U JP 16494185U JP S6273684 U JPS6273684 U JP S6273684U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- output
- oscillation
- superimposed
- 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
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 4
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
- H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Superheterodyne Receivers (AREA)
Description
第１図は、本考案のテレビジヨンチユーナの一
実施例のブロツク図であり、第２図は、第１図の
要部の具体的回路図であり、第３図は、従来のテ
レビジヨンチユーナのブロツク図である。 ３：第１アンテナ同調回路、４：第１ＲＦ増幅
回路、５：第１段間同調回路、６：混合回路、７
：第１局部発振回路、８：第２アンテナ同調回路
、９：第２ＲＦ増幅回路、１０：第２段間同調回
路、１２：第２局部発振回路、２１：ＩＦ出力同
調回路、ＳＷ：切換回路。
実施例のブロツク図であり、第２図は、第１図の
要部の具体的回路図であり、第３図は、従来のテ
レビジヨンチユーナのブロツク図である。 ３：第１アンテナ同調回路、４：第１ＲＦ増幅
回路、５：第１段間同調回路、６：混合回路、７
：第１局部発振回路、８：第２アンテナ同調回路
、９：第２ＲＦ増幅回路、１０：第２段間同調回
路、１２：第２局部発振回路、２１：ＩＦ出力同
調回路、ＳＷ：切換回路。
Claims (1)
- 第１の周波数帯の第１信号経路の出力信号に第
１局部発振回路の発振信号を重畳し、第２の周波
数帯の第２信号経路の出力信号に第２局部発振回
路の発振信号を重畳し、前記第１と第２の信号経
路のいずれか一方を選択的に切換回路により混合
回路に接続し、この混合回路の出力から中間周波
信号をＩＦ出力同調回路で抽出することを特徴と
するテレビジヨンチユーナ。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985164941U JPS6273684U (ja) | 1985-10-25 | 1985-10-25 | |
| KR2019870001863U KR900002659Y1 (ko) | 1985-10-25 | 1987-02-19 | 텔레비젼 튜너 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985164941U JPS6273684U (ja) | 1985-10-25 | 1985-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6273684U true JPS6273684U (ja) | 1987-05-12 |
Family
ID=31094518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985164941U Pending JPS6273684U (ja) | 1985-10-25 | 1985-10-25 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6273684U (ja) |
| KR (1) | KR900002659Y1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102493254B1 (ko) * | 2021-10-18 | 2023-01-27 | 산제트 인터내셔널 컴퍼니, 리미티드 | 내부 구동식 분도기 |
-
1985
- 1985-10-25 JP JP1985164941U patent/JPS6273684U/ja active Pending
-
1987
- 1987-02-19 KR KR2019870001863U patent/KR900002659Y1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR900002659Y1 (ko) | 1990-03-31 |
| KR880016933U (ko) | 1988-10-08 |