KR930004452B1 - Channel frquency selection circuit - Google Patents
Channel frquency selection circuitInfo
- Publication number
- KR930004452B1 KR930004452B1 KR9023050A KR900023050A KR930004452B1 KR 930004452 B1 KR930004452 B1 KR 930004452B1 KR 9023050 A KR9023050 A KR 9023050A KR 900023050 A KR900023050 A KR 900023050A KR 930004452 B1 KR930004452 B1 KR 930004452B1
- Authority
- KR
- South Korea
- Prior art keywords
- channel
- frequency
- tuner
- stage
- frquency
- Prior art date
Links
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
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
Abstract
The method tunes a channel frequency to the transmission frequency of a certain channel precisely in a certain time by sequentially varying the receiving frequency of a tuner by 250 KHz interval until the frequency and transmission frequency come close, and reducing the variation interval to 62.5 KHz. The method comprises the three stages; the 1st stage for generating the reception reference frequency data (fo) of a certain channel, the 2nd stage for setting the channel frequency bandwidth of a tuner (TU) to the transmission frequency of the channel, and the 3rd stage for precisely tuning the channel frequency bandwidth of the tuner (TU) to the transmission frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR9023050A KR930004452B1 (en) | 1990-12-31 | 1990-12-31 | Channel frquency selection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR9023050A KR930004452B1 (en) | 1990-12-31 | 1990-12-31 | Channel frquency selection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
KR920013904A KR920013904A (en) | 1992-07-30 |
KR930004452B1 true KR930004452B1 (en) | 1993-05-27 |
Family
ID=19309381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR9023050A KR930004452B1 (en) | 1990-12-31 | 1990-12-31 | Channel frquency selection circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR930004452B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100417414B1 (en) * | 1996-08-29 | 2004-04-29 | 엘지전자 주식회사 | Automatic frequency control method for tuning of video equipment |
-
1990
- 1990-12-31 KR KR9023050A patent/KR930004452B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR920013904A (en) | 1992-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20020429 Year of fee payment: 10 |
|
LAPS | Lapse due to unpaid annual fee |